Class / Patent application number | Description | Number of patent applications / Date published |
399015000 | By inspection of copied image | 68 |
20080240742 | Image forming apparatus - Disclosed an image forming apparatus including: a first input section to receive a setting instruction of an output cycle of sample output; a second input section to receive an instruction of immediate output of the sample output; an image forming section; an ejection section; a control section to count a number of the recording media, the control section judging timing of executing the sample output, based on a counted value of the number of recording media and an set output cycle, the control section ejecting sample output matter according to a judgment result, the control section simultaneously initializing the counted value, the control section allowing the image forming section to form an image and eject the sample output matter when the immediate output of the sample output is instructed with the second input section, the control section simultaneously initializing the counted value. | 10-02-2008 |
20080260395 | IMAGE FORMING APPARATUS AND MISPRINT DETECTION METHOD - An image forming apparatus includes: an image forming unit for forming an image based on an input image data on a recording medium on which a first image is previously formed; a storage unit for storing an image data relating to the first image; a first reading unit for reading a second image on the recording medium after the image is formed on the recording medium by the image forming unit; and a control unit for comparing an image data obtained by superposing the input image data on the image data relating to the first image with an image data relating the second image read by the first reading unit to detect a misprint in the image forming unit. | 10-23-2008 |
20080279569 | Method of adjusting print magnification in digital duplex printing - A method of adjusting print magnification in digital duplex printing in which the difference in print magnification from front to back side is measured on a text sheet and the percentage difference calculated. Provision is made for user inputs for adjusting the digital image print magnification laterally and longitudinally whereupon changes are evaluated in another text printing. | 11-13-2008 |
20080279570 | IMAGE FORMING APPARATUS - An image forming apparatus, which includes a plurality of image forming portions transferring a yellow image, a magenta image, a cyan image, and a black image formed on a plurality of photoconductor drums to a sheet conveyed on a conveying belt, a marking unit forming marks on the conveying belt, a detecting unit detecting the marks with three or more sensors aligned in a direction normal to a direction in which the sheet is conveyed, a calculating unit calculating an amount of color misalignment in accordance with results detected by the detecting unit, and a correcting unit correcting the color misalignment in accordance with the calculated amount of color misalignment, wherein the calculating unit calculates an amount of skew difference in accordance with results detected by two sensors among the three or more sensors, wherein one sensor of the two sensors is disposed on one end of the three or more sensors and the other sensor of the two sensors is disposed on the other end of the three or more sensors, wherein the correcting unit corrects the skew difference in accordance with the calculated amount of skew difference. | 11-13-2008 |
20090028584 | Device That Enables Blanket Diagnostics And Proof For Web Presses - Example embodiments of systems and methods for performing blanket diagnostics and proofing are disclosed. | 01-29-2009 |
20090028585 | Interactive visual card-selection process for mitigating light-area banding in a pagewide array - Preferably, test-patterns print on separate, multiple print-medium cards, each including a ramp with colors graded along a certain direction—and, superimposed on the ramp, a candidate add-on colorant. Ramps preferably are printed in so-called “customer colors”, common in snapshots and particularly snapshot regions that include sky. Positions or amounts of the candidate add-on colorant canvass a likely range of values that optimize camouflaging or suppression of a banding artifact (due to seams in the pagewide array) that is extended along the same certain direction. For each seam and each “customer color” used, an operator holds up several cards for comparison, selecting the best one to three. Operators thus can evaluate candidate colorant patterns in context of many different tones of the sky and other customer colors. Preferably banding suppression is integrated with linearization: at each seam a series of linearization tables is smoothly interpolated between measurement-based tables for adjacent inkjet dice. | 01-29-2009 |
20090087199 | IMAGE FORMING APPARATUS, ANALYSIS INFORMATION MANAGEMENT METHOD - A technique that can contribute to improvement of analysis accuracy in analysis processing concerning an image forming apparatus is provided. | 04-02-2009 |
20090116855 | METHOD AND APPARATUS FOR IMAGE FORMING CAPABLE OF EFFECTIVELY PERFORMING COLOR IMAGE POSITION ADJUSTMENT - A color image forming apparatus including a plurality of image forming devices, a transfer device including a transfer belt, a test pattern forming device configured to form, on the transfer belt, a test pattern including a plurality of marks formed by the image forming devices, an optical sensor configured to read the plurality of marks, and a checking device configured to determine whether reading by the optical sensor is performed correctly or not. | 05-07-2009 |
20090208228 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus and an image forming method are provided, which can reduce time and effort needed by consistency examination between a printed code data and a paper fingerprint data. In the present invention, paper fingerprint information before starting of the printing of the paper for output on which the document to be guaranteed in the originality authenticity is to be printed is acquired. When printing the document to be guaranteed in the originality authenticity, a code image data generated based on the paper fingerprint data of the paper for output on which the document is to be printed and the document mentioned above, are printed on the paper for output. Subsequently, the paper fingerprint data before starting of the printing and the paper fingerprint data after finishing of the printing are collated, then, it is judged whether the paper for output mentioned above is a paper-fingerprint deformation paper. | 08-20-2009 |
20100061740 | Image Forming Apparatus - An image forming apparatus includes a plurality of forming devices, a measuring device and a correcting device. In execution of a steady-deviation detection, the correcting device controls the forming devices to form a first pattern and detects a steady deviation amount of the image forming position on a basis of a measurement result of the first pattern. In execution of a varying-deviation detection, the correcting device controls at least one of the forming devices to form a second pattern and detects a varying deviation amount of the image forming position having a cycle on a basis of a measurement result of the second pattern. The correcting device determines necessity of executing the other one of the steady-deviation detection and the varying-deviation detection on the basis of the measurement result in the one of the steady-deviation detection and the varying-deviation detection. | 03-11-2010 |
20100067925 | IMAGE FORMING APPARATUS - A toner image can properly be transferred onto the second side of a paper sheet without being influenced by the toner image on the first side. There are provided a detection unit | 03-18-2010 |
20100189447 | IMAGE FORMING APPARATUS - An image forming apparatus includes: an image forming unit that forms an image on a recording medium; a heating device that heats the image formed at the image forming unit, on the recording medium while recording medium is conveyed; a detecting device that is provided on a downstream side of the heating device in a recording medium conveying direction and detects image density and an image defect of the recording medium; and a stabilizing device that is provided between the detecting device and the heating device and stabilizes physical changes in the recording medium. | 07-29-2010 |
20100215384 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image forming unit and a surface reflection detector. The image forming unit includes an image forming station to form a detection sample image and a toner image on a recording medium, a controller to set a detection sample image output mode to output the detection sample image, and a fixing device to fix the detection sample image and the toner image on the recording medium. The surface reflection detector is connected to the controller to detect reflection characteristics of a surface of the recording medium and includes a projector to project parallel light against a target and an angular distribution detector to detect an angular distribution of light reflected from the recording medium and the detection sample image. Based on the detection result, imaging conditions are adjusted and an output image is formed. | 08-26-2010 |
20110058823 | IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND COMPUTER PROGRAM PRODUCT - A toner-image detecting sensor for detecting a toner image before being transferred onto a recording sheet and a fixed-image detecting sensor for detecting the toner image after being secondarily transferred and fixed on the recording sheet are arranged so that the positions of them in a main scanning corresponding direction are aligned. An image forming apparatus has a first image adjustment mode and a second image adjustment mode. In the first image adjustment mode, image adjustment is made on the basis of only a result of detection by the toner-image detecting sensor without transferring the test pattern onto the recording sheet. In the second image adjustment mode, the test pattern is transferred onto the recording sheet, and image adjustment is made on the basis of both a result of detection by the toner-image detecting sensor and a result of detection by the fixed-image detecting sensor. | 03-10-2011 |
20110135321 | INSPECTION APPARATUS, CONTROL METHOD OF INSPECTION APPARATUS, AND STORAGE MEDIUM - If a print misregistration amount on a sheet is larger than a predetermined threshold before determining whether a printed image is appropriate or not, an abnormal status of the image printed on the sheet is detected without correcting image data for inspection. A control method for controlling a detecting apparatus for inspecting a print status of an image printed on a sheet by a printing apparatus includes detecting, in a case where it is determined that a print misregistration amount of the image printed on the sheet with respect to the sheet is larger than a predetermined threshold, an abnormality of the print status of the image read by a reading unit without performing correction. | 06-09-2011 |
20110194860 | IMAGE FORMING APPARATUS - When an input image is to be formed on a sheet conveyed to a transfer roller, the exposure section is controlled and deviation correction is performed to offset the image forming position across the width of the sheet in response to the result of detection by a deviation sensor. By contrast, when pattern images are to be formed on a sheet in response to the instruction of the main control section, the image forming control section does not perform deviation correction in the process of forming a pattern image. | 08-11-2011 |
20110217052 | COLOR IMAGE FORMING APPARATUS HAVING FUNCTION OF OBTAINING COLOR INFORMATION OF PATCH - An image forming apparatus uses the difference in time taken for each patch to reach a color sensor, which occurs upon reversing the conveyance direction of a printing material. Due to this difference in time, the temperature of the printing material in detection by the color sensor differs among the respective patches. The error of a colorimetric value due to thermochromism is reduced by placing a patch with a colorimetric value which has a low temperature dependence so as to be detected earlier, and a patch with a colorimetric value which has a high temperature dependence so as to be detected later. | 09-08-2011 |
20110222868 | IMAGE FORMING APPARATUS, IMAGE FORMING SYSTEM, AND IMAGE DENSITY ADJUSTMENT METHOD - An image forming apparatus including: an image forming section; and a control section allowing the image forming section to form a belt-shaped pattern on sheets in such a way that a formation starting position of the belt-shaped pattern is shifted for a distance, obtained by dividing a measurement-distance by a number of sheets to be used, in a main-scanning direction sheet by sheet; collecting, sheet by sheet, pieces of density information each of which indicates the density of the belt-shaped pattern at a measurement position of measurement positions; creating data in which the pieces of density information respectively correspond to the measurement positions arranged in the main-scanning direction on each of the sheets; and correcting density unevenness of image data in the main-scanning direction based on the created data, wherein the image forming section forms an image based on the image data of which the density unevenness is corrected. | 09-15-2011 |
20110222869 | IMAGE FORMING APPARATUS AND IMAGE DENSITY ADJUSTMENT METHOD - An image forming apparatus including: an image forming section which forms a belt-shaped pattern having a specific gradation and a prescribed length extending in a main-scanning direction; and a control section which receives pieces of density information each of which indicates a density of the belt-shaped pattern at a measurement position of measurement positions; detects a minimum density from the pieces of density information; sets the minimum density as a target density; identifies a first error between the target density and each of densities respectively indicated by the pieces of density information; sets a gradation correction amount at each of the measurement positions, respectively corresponding to the pieces of density information, based on the respective first errors; and corrects a gradation of image data based on the gradation correction amounts, wherein the image forming section forms an image based on the image data of which the gradation is corrected. | 09-15-2011 |
20110222870 | Image forming apparatus, image forming method, and program - An image forming apparatus includes: a patch-image generating unit that generates a patch image for measuring a color reproduction characteristic and correcting color, the patch image in which mixed-color patch sets each including a plurality of patches each formed by overlaying a plurality of color materials are arranged so that patches having the same color and the same tone value included in the mixed-color patch sets are arranged to be kept at a distance in a circumferential direction of a photosensitive element and a distance between same tone patches, which are two patches having the same color and the same tone value, is close to (N+½) times the length of a period of uneven density which periodically occurs in the circumferential direction of the photosensitive element (N is an integer of 0 or greater); and an image forming unit that forms the generated patch image on a recording medium. | 09-15-2011 |
20110243581 | COLOR REGISTRATION STRATEGY FOR PREPRINTED FORMS - A computer-implemented method for performing color registration on template media having template markings thereon. The method comprising sensing the template media using a linear array sensor to obtain first image data; printing a test pattern on the template media; sensing the template media along with the test pattern printed thereon to obtain second image data; transforming the first image data and the second image data into an absorbance space to obtain a first absorbance and a second absorbance, respectively; calculating a difference between the first and the second absorbances to obtain an output absorbance; transforming the output absorbance into a reflectivity space to obtain an output data; determining a process direction misregistration and a cross-process direction misregistration from the output data; and adjusting a cross-process position and a process position of print heads based on the process and cross-process direction misregistration to provide accurate color registration on subsequent template media. | 10-06-2011 |
20110243582 | IMAGE FORMING APPARATUS - An image forming apparatus executes banding correction at a level determined according to variation of the density characteristic of the image forming apparatus to achieve a high quality image. In the image forming apparatus, a banding correction unit acquires information about a cause of density variation that may occur in a sub scanning direction of a rotation member, which is used for forming a toner image on an image carrier based on input image information and sets, based on the acquired information, the level of the density correction, which is determined according to the density variation cause information. | 10-06-2011 |
20110280589 | AUTOMATIC PAPER MANAGEMENT AND COLOR PROFILE UTILIZATION - Methods and systems herein provide for calibration of a production printing system that accommodates a plurality of different print paper types, including new paper types with no ICC profiles or optical density curves on file. One exemplary method includes printing test patches of primary colors on a first print medium, measuring colors of the test patches printed on the first print medium to determine an optical density of the first print medium, and comparing the optical density of the first print medium to a plurality of optical density curves to identify a comparable optical density curve of a different print medium. The comparable optical density curve is one of a plurality of optical density curves installed on the production printing system. The method further includes automatically selecting the comparable optical density curve to calibrate the production printing system to the different print medium for use in printing to the first print medium. | 11-17-2011 |
20110299861 | IMAGE FORMING APPARATUS HAVING BANDING CORRECTION FUNCTION - The image forming apparatus includes a CPU that performs control to form an inspection image for determining whether or not banding is suppressed to be smaller than a predetermined threshold value; and a density sensor that detects an intensity of banding periodically occurring in a sub-scanning direction of the formed inspection image. If based the detected banding intensity, the CPU has determined that the banding is not suppressed to be smaller than the predetermined threshold value, the CPU performs control to not perform banding correction or performs control to re-set a relationship between a phase of a rotary member and correction information. | 12-08-2011 |
20120002984 | Image output apparatus, image test system, and density correction method - An image output apparatus includes: an image forming unit that forms an image on a recording medium; a test-threshold acquiring unit that acquires a test threshold that is a pass-fail criterion for the image test for determining whether the test image data passes or fails the image test; a changing unit that changes a density detection mode of at least one of the image forming unit and the image reading apparatus on the basis of the test threshold; a density correcting unit that corrects density used in an image forming process performed by the image forming unit; and a reference-image-data acquiring unit that acquires the reference image data. | 01-05-2012 |
20120020680 | IMAGE FORMING APPARATUS WHICH PERFORMS CALIBRATION FOR MAINTAINING IMAGE QUALITY - An image forming apparatus forms a pattern image on a first printing medium and creates a first image processing condition for adjusting a tone characteristic based on a first luminance value. When performing the calibration using a second printing medium different from the first printing medium, the apparatus corrects, based on a luminance value of a background region of the second printing medium, a second luminance value output in accordance with light reflected by the second printing medium, and creates the first image processing condition based on the corrected second luminance value. | 01-26-2012 |
20120057885 | METHOD FOR COLOR STABILITY DIAGNOSTICS BASED ON CORRELATION ANALYSIS - A diagnostic method for color stability in an image printing system includes printing a test pattern onto output media; measuring, during the printing of the test pattern, an image of the test pattern on an image transfer surface using one or more image transfer surface sensors to obtain one or more image transfer surface signals; measuring a printed image of the test pattern on the output media using a printed image sensor to obtain a printed image signal; calculating correlation functions for the one or more image transfer surface signals and the printed image signal; and analyzing the correlation functions for the one or more image transfer surface signals and the printed image signal to identify a subsystem in the image printing system that causes variations in color within the plurality of prints of the test pattern. | 03-08-2012 |
20120099873 | SENSING DEVICE, IMAGE FORMING DEVICE - A sensing device including: a sensing section having an illuminating section that illuminates light and a light-receiving section that receives reflected light of light illuminated from the illuminating section, the sensing section sensing an image on a recording medium; a housing that accommodates the illuminating section; a covering member covering the housing, that is freely installed at and removed from the housing, having a transmitting member through which the light from the illuminating section is transmitted; and a setting section disposed at an opposite side to a housing side with respect to the covering member, the setting section being freely installed at and removed from the housing, and having a setting surface that sets a position at which the recording medium reflects light, wherein, at a positioning portion of the setting section, the covering member is positioned at least in a direction perpendicular to the setting surface, is provided. | 04-26-2012 |
20120106987 | DETECTION APPARATUS AND IMAGE FORMING APPARATUS - A detection apparatus includes a transmission member that is provided facing a conveying path on which a medium is conveyed and that transmits light from the medium being conveyed on the conveying path; a detection section that detects the medium or an image on the medium according to the light which is transmitted by the transmission member, wherein the light is received by a light-receiving member of the detection section; and an opposing member provided on an opposite side of the conveying path from the transmission member and having at least one opposing surface that faces the transmission member. In a conveying direction of the medium, a length of the opposing surface is shorter than a length of a detection surface. | 05-03-2012 |
20120134689 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND IMAGE FORMING APPARATUS - An information processing apparatus capable of determining a height of a toner image formed on an image bearing member with high accuracy includes detecting a two-dimensional reflection image corresponding to a reflection image of a beam from the toner image formed on the image bearing member, identifying a representative position based on the detected two-dimensional reflection image, and determining the height of the toner image based on the identified representative position. | 05-31-2012 |
20120141146 | APPARATUS TO CONTROL COLOR REGISTRATION AND IMAGE DENSITY - An apparatus to control color registration and image density and a method of calculating color registration error. The apparatus includes registration marks formed on a transfer belt such that each of the registration marks includes a scan direction component and a slanting direction component at an angle with respect to both the scan direction and the cross-scan direction. The apparatus further includes image density marks formed on the transfer belt, having predetermined image densities, and a registration and image density sensor provided above the registration marks and the image density marks to radiate beams onto the registration marks and the image density marks. The sensor receives beams reflected from the registration marks and the image density marks to produce detection signals, and obtains registration information and image density information from the detection signals. Accordingly, X-offset, Y-offset, printing width error, and skew can be simultaneously compensated for using a single apparatus. | 06-07-2012 |
20120201547 | FIXING DEVICE, FIXING DEVICE CONTROL METHOD, AND IMAGE FORMING APPARATUS - A fixing device includes a fixing unit, a shearing unit, a detection unit, and a controller. The fixing unit fixes a toner image in place on a printed surface of a recording medium. The shearing unit is disposed downstream from the fixing unit along the media conveyance path to at least partially shear toner from the fixed toner image, so as to create a shorn image area that exhibits a different image density than that of an intact, unshorn image area on the printed surface of the recording medium. The detection unit is disposed at least partially downstream from the shearing unit along the media conveyance path to measure the image densities of the shorn and unshorn image areas. The controller is operatively connected to the fixing unit and the detection unit to adjust one or more operational parameters according to a difference between the measured image densities. | 08-09-2012 |
20120219306 | IMAGE FORMING APPARATUS THAT DETECTS TRANSITION BETWEEN PATCH IMAGES - An image forming apparatus includes a detection unit configured to irradiate a patch image formed on a recording material with light, and detect light intensities at a plurality of wavelengths in the light reflected from the patch image; and a determination unit configured to determine that a patch image for which the detection unit is detecting light intensities has transitioned from a first patch image to a second patch image, wherein the determination unit is further configured to determine that the patch image for which the detection unit is detecting has transitioned, in a case where a light intensity at a wavelength for identification of a patch image to be identified, has varied by an amount greater than a first threshold corresponding to that wavelength for identification. | 08-30-2012 |
20120251132 | METHOD OF CORRELATING IMAGE MISREGISTRATION - A method for measuring Side 1 to Side 2 image on paper misregistration includes using a series of lines printed on both sides of a substrate, such as, paper. The paper is passed in front of an in-line spectrophotometer or densitometer. The amount of image “show through” is measured and correlated to an amount of misregistration. | 10-04-2012 |
20120294631 | DIAGNOSTIC METHOD FOR DETERMINING IMAGER CONTRIBUTION TO PRINTING DEFECTS - A method and device detect printing defects on prints produced by an electrostatic printing device and, in response, place the electrostatic printing device into a diagnostic mode. While in the diagnostic mode, the method and device charges an image bearing surface of the electrostatic printing device to a uniform potential charge and disables all light emitting devices of the electrostatic printing device that could alter the uniform potential charge. Next, this method and device transfer marking material to the image bearing surface to create a test image and print at least one test patch by transferring the test image from the image bearing surface to a sheet of media. This method and device evaluate whether the test patch includes the printing defects and identify whether said light emitting devices of the electrostatic printing device is defective, based on whether said test patch includes printing defects. | 11-22-2012 |
20120321327 | INSPECTION APPARATUS, INSPECTION METHOD, INSPECTION SYSTEM, AND STORAGE MEDIUM - A special color specification area is subjected to inspection processing assuring that the special color specification area is higher in color reproducibility than an area other than the special color specification area. | 12-20-2012 |
20130058662 | IMAGE FORMING APPARATUS AND METHOD FOR CALIBRATING DENSITY AND COLOR - According to the embodiments of the invention, the problem to be solved is whether errors have occurred for color sensors for calibrating density and color or their corresponding reference plates. At step S | 03-07-2013 |
20130064558 | IMAGE FORMING DEVICE AND IMAGE FORMING METHOD - An image forming device includes: a decolorable first developer decolorized by being heated to a certain decolorizing temperature or higher and fixed by being heated to a first fixing temperature lower than the decolorizing temperature; a non-decolorable second developer being fixed at a second fixing temperature higher than the certain decolorizing temperature; a conveying unit to determine a sheet printed by trial printing as a sheet for final printing, the sheet being provided with a first developer image, the conveying unit feeding the sheet for final printing toward a transferring unit to transfer a second developer image on the first developer image on the sheet for final printing; and a controller having a trial printing mode in which the first and second developer images are heated and pressed simultaneously at the second fixing temperature on the sheet for final printing. | 03-14-2013 |
20130077982 | IMAGE INSPECTION DEVICE AND IMAGE FORMING APPARATUS - An image inspection device includes an acquiring section that reads an image formed on an image carrying medium using an image forming material and acquires first inspection image information; and a decoloring section that leaves an infrared absorbent on the image carrying medium, and decolors a decolorable composition on the image carrying medium by physical treatment or chemical treatment, wherein the image forming material contains the infrared absorbent having an optical absorption peak in an infrared region, and the image forming material contains the decolorable composition having an optical absorption peak in a visible region in a color-developed state and being decolored by physical treatment or chemical treatment. | 03-28-2013 |
20130077983 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus of an embodiment includes a sensor, a reversing section, an image forming section, and a controller. The sensor reads a sheet side on which an image is to be formed before formation of the image. The reversing section reverses sides of the sheet being conveyed. The image forming section forms the image and a predetermined mark on the same side of the sheet. The controller acquires image data read by the sensor. If the image data contains the mark, the controller causes the reversing section to reverse the sides of the sheet and also causes the image forming section to form the image on a side that becomes a side targeted for printing after the reversion. | 03-28-2013 |
20130148986 | PRINT DEVICE WITH PRINTED SURFACE IDENTIFYING FUNCTION AND PRINTING METHOD - A print device with a surface identifying function includes a feed roller assembly, a print assembly, and a printed surface identifying assembly. The feed roller assembly feeds the paper into the print device when receiving a printing task. The printed surface identifying assembly identifies whether one or both surfaces of a sheet of paper have already been printed, generates and sends a result to a processing unit. The processing unit determines whether the paper is available for printing according to the result, and control the print assembly not to perform the printing task and the feed roller assembly to take the paper out of the print device when the paper is unavailable for printing. A printing method is also provided. | 06-13-2013 |
20130148987 | INSPECTION APPARATUS, INSPECTION METHOD, AND COMPUTER-READABLE STORAGE MEDIUM - An inspection apparatus inspects a printed product by positioning a reading target image of the printed product relative to a reference image and collating the reading target image with the reference image includes a positioning unit configured to perform positioning processing for the reference image and the reading target image with a first precision, and a detection unit configured to detect an image defect candidate area by collating the reading target image with the reference image, which have been positioned by the positioning unit. The positioning unit newly performs the positioning processing for the reference image and the reading target image in the image defect candidate area with a second precision that is higher than the first precision. The detection unit detects an image defect by collating the reading target image with the reference image in an area having been newly subjected to the positioning processing using the second precision. | 06-13-2013 |
20130156445 | IMAGE FORMING APPARATUS AND CONTROL METHOD THEREOF - An image forming apparatus includes an image forming unit configured to form a measurement image on a recording sheet by using a color material, a fixing unit configured to fix the measurement image onto the recording sheet by heating the measurement image, a measurement unit configured to measure color values of the measurement image fixed on the recording sheet downstream of the fixing unit in a sheet conveyance direction of the recording sheet, a pressing member configured to press the recording sheet, on which the measurement image is formed, against the measurement unit, a selection unit configured to select a mode from among a first mode, in which the measurement image is measured with the pressing member pressing the recording sheet against the measurement unit, and a second mode, in which the measurement image is measured without the pressing member pressing the recording sheet against the measurement unit. | 06-20-2013 |
20130183047 | IMAGE FORMING APPARATUS - An image forming apparatus including an image forming unit configured to form an image on the image bearing member, a transfer unit configured to transfer the image on the image bearing member to a recording material, a conveyance unit configured to convey the recording material to the transfer unit, a controller configured to form a test sheet by causing a test image to be formed on the image bearing member such that the test image has a predetermined density and causing the test image to be transferred to the recording material, and a determination unit configured to determine a conveyance speed of the recording material such that a density difference between a density of the test image on the test sheet and the predetermined density is less than or equal to a threshold value. | 07-18-2013 |
20130188972 | ELECTROPHOTOGRAPHIC IMAGE FORMING METHOD - An image forming method including forming an image of a toner including a wax on a recording medium; fixing the toner image using by an oil-less fixing device; and then forming an overcoat layer on the fixed toner image. When a portion of the fixed toner image having the heaviest toner weight is subjected to an ATR FT-IR analysis, a peak area ratio Ab/Aa falls in a range of 3.0 to 7.0 or a peak area ratio Ab′/Aa′ falls in a range of 0.004 to 0.014, wherein Aa represents the area of a peak present in a range of 2896 cm | 07-25-2013 |
20130216244 | IMAGE FORMING APPARATUS - Disclosed is an image forming apparatus including: an image forming unit to form an image on paper fed from the selected feed tray; a density sensor to measure a density of the image formed on the paper; and a control unit to control execution of an output paper density adjustment in accordance with a result obtained by forming a test image on the paper by using the image forming unit and by measuring the density of the test image formed on the paper by using the density sensor, wherein the control unit executes the output paper density adjustment by changing the feed tray for feeding the paper, from the feed tray designated in a print job to the substitute feed tray at a predetermined timing while the print job is executed, regardless of the paper setting information related to the substitute feed tray. | 08-22-2013 |
20130330092 | PRINTING - An embodiment of this disclosure involves printing color outputs on sheets, reading the color outputs and adjusting a calibration parameter. | 12-12-2013 |
20130336666 | PRINTING - Printing by determining target color values based on first color outputs, determining current color values based on current color outputs, and calculating color compensation values to compensate for a difference between the target color values and the current color values. | 12-19-2013 |
20140056601 | IMAGE FORMING APPARATUS FOR FORMING A MEASUREMENT IMAGE - An image forming apparatus includes a measurement unit configured to irradiate a measurement image with light, and measure the light reflected from the measurement image, a white reference plate disposed in a position opposite to the measurement unit, a correction unit configured to correct a measurement result of the measurement image, based on a measurement result of the white reference plate acquired by the measurement unit, and a temperature detection unit configured to detect temperature in a vicinity of the measurement unit, wherein the correction unit corrects, in a case where a difference between a temperature detected by the temperature detection unit and a temperature shown when previously measuring the white reference plate is less than a predetermined value, a measurement result of the measurement image using a previous measurement result of the white reference plate without measuring the white reference plate with the measurement unit. | 02-27-2014 |
20140112672 | IMAGE FORMING APPARATUS - An image forming apparatus includes a fixing unit configured to heat and fix a measurement image formed by an image forming unit to a sheet, a measurement unit arranged downstream of the fixing unit in a conveyance direction of the sheet and configured to measure color of the fixed measurement image, a conversion unit configured to convert a measurement result of the measurement unit into a measurement result at a predetermined temperature based on conversion setting information set in advance, a setting unit configured to set a mode for generating the conversion setting information, and a generation unit configured to generate the conversion setting information by causing the image forming unit to form the measurement image on the sheet, causing the fixing unit to fix the formed measurement image, and causing the measurement unit to repeatedly measure the fixed measurement image in response to setting of the mode. | 04-24-2014 |
20140199085 | IMAGE FORMING APPARATUS AND COLORIMETRIC APPARATUS - When a colorimeter is colorimetrically measuring a test pattern, a control unit controls a motor such that the colorimeter and a facing member are closer to each other. A recording material on which the test pattern has been formed is brought into contact with the colorimeter. Even when the colorimeter is not colorimetrically measuring the test pattern, the control unit controls the motor such that the colorimeter and the facing member are closer to each other. The recording material on which the test pattern has been formed is brought into contact with the colorimeter. | 07-17-2014 |
20140233968 | IMAGE FORMING APPARATUS THAT FORMS A TEST PATTERN AND CARRIES OUT CORRECTION - An image forming apparatus, includes an image forming unit configured to form a reference pattern and a test pattern on a sheet, a measurement unit configured to detect the reference pattern formed on the sheet and to measure the test pattern formed on the sheet, and a control unit configured to control a measurement timing of the test pattern by the measurement unit according to a detection interval between two reference patterns detected by the measurement unit. | 08-21-2014 |
20140255046 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image forming unit configured to form a measurement image on a sheet along a main scanning direction, a fixing unit configured to fix the measurement image onto the sheet, a first calculation unit configured to cause a measuring unit to output a measured value at a predetermined point of measurement on the measurement image, a feeding unit to rotate the sheet 90 degrees and feed the sheet, the sheet to pass through the fixing unit again, and the measuring unit to output measured values at a plurality of points of measurement, and calculate a first correction coefficient from first and second measured values at the point of measurement, a correction unit configured to correct the measured values with the first correction coefficient, and a second calculation unit configured to calculate a second correction coefficient for correcting an unevenness in the main scanning direction. | 09-11-2014 |
20140301745 | IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND MEDIUM - There is provided an image forming apparatus for forming an image using coloring materials of a plurality of colors. The image forming apparatus includes a regular reflection light measuring unit configured to measure regular reflection light of an image formed by a coloring material of a color with which a difference in diffused reflection light between a non-image part and an image part on a recording medium is relatively small compared to a difference in specular reflection light of the coloring materials of the plurality of colors at an angle by which a quantity of received light to be measured by a light receiving unit becomes stable in a case where distance between the light receiving unit and a measurement surface varies and a glossiness determining unit configured to determine glossiness based on the intensity of regular reflection light measured by the regular reflection light measuring unit. | 10-09-2014 |
20140363177 | IMAGE FORMING APPARATUS, IMAGE ADJUSTMENT METHOD FOR THE IMAGE FORMING APPARATUS, AND ADJUSTMENT PATTERN IMAGE - A set of adjustment pattern images includes first adjustment pattern images and second adjustment pattern images to be formed on a first side and a second side of a recording sheet, respectively, by an image forming apparatus. The set of adjustment pattern images is employed to adjust an image forming position by the image forming apparatus such that an image forming position of the first adjustment pattern images is aligned with an image forming position of the second adjustment pattern images. The set of adjustment pattern images includes at least two first adjustment pattern images that are spaced from each other and at least two second adjustment pattern images that are spaced from each other, and the first adjustment pattern images on the first side and the second adjustment pattern images on the second side are arranged alternately with each other. | 12-11-2014 |
20140369701 | METHOD FOR CALIBRATING SPECIALTY COLOR TONER - A method for calibrating specialty toner, the method includes providing a substrate; depositing an invariant or substantially invariant laydown of a color toner on the substrate; depositing a varying laydown of the specialty toner; fusing the color toner and specialty toner to the substrate; measuring a color response signal of the substrate, color toner, and specialty toner; calculating a color response curve as function of the varying laydown of the specialty toner; comparing the color response curve to a target color response curve; and modifying printing parameters of the specialty toner to set the color response curve equal to or substantially equal to the target color response curve. | 12-18-2014 |
20140369702 | IMAGE FORMING APPARATUS - An image forming apparatus includes a forming unit configured to form a detection patch on a recording material and a detecting unit configured to detect the detection patch on the recording material being conveyed at a first conveying speed. After the detecting unit detects the detection patch, the recording material with the detected detection patch is conveyed at a second conveying speed higher than the first conveying speed. | 12-18-2014 |
20140376932 | IMAGE FORMING APPARATUS - The image forming apparatus includes an image forming section that forms a patch image T on a recording material P, a fixing unit that fixes the patch image, a spectral color measurement device that irradiates light onto the patch image T that was fixed by the fixing unit, and measures reflected light from the patch image, a white reference plate disposed facing the spectral color measurement device; and a control unit that controls a density or a chromaticity of an image based on a result obtained by measuring the patch image and a result obtained by measuring the white reference plate by means of the spectral color measurement device. It is thereby possible to improve the color measurement accuracy of a color measurement device. | 12-25-2014 |
20150055964 | IMAGE FORMING APPARATUS AND IMAGE NOISE PREDICTION METHOD - In an image forming apparatus, a sensor section which the printed sheets fed from an image forming section pass through or by in a first direction one by one, irradiates each of the passing printed sheets with light elongated in a second direction different, thereby sensing densities of the each of passing printed sheets, on a pixel basis. Further, a control section integrates densities of respectively corresponding line portions in respective non-image areas of sheets of the printed sheets, based on the densities obtained by the sensor section, each of the line portion extending substantially in the first direction and including pixels on substantially a same position in the second direction, thereby obtaining integrated density values, and predicts, based on the obtained integrated density values, that a noise will occur on a printed sheet to be made by the image forming section later on. | 02-26-2015 |
20150055965 | METHOD OF DETERMINING PROCESS CONDITION OF IMAGE FORMING APPARATUS - An image forming unit forms a plurality of measurement images based on a plurality of process conditions. A measurement unit measures the density of each of the plurality of measurement images. A determination unit uses a first determination mode or a second determination mode. In the first determination mode, a process condition is determined from a first measurement result higher than target density and a second measurement result lower than the target density, from among a plurality of measurement results. In the second determination mode, the process condition is determined from measurement results lower than the target density. | 02-26-2015 |
20150063835 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image forming unit configured to from a measurement image on a recording paper by a color material, a fixing unit configured to fix the measurement image onto the recording paper by heating, a measurement unit configured to measure the measurement image fixed onto the recording paper downstream of the fixing unit in a conveyance direction of the recording paper, and a control unit configured to perform control such that a period of time from when the recording paper passes through the fixing unit until the measurement unit measures color of the measurement image is longer than a period of time from when the recording paper passes through the fixing unit until the measurement unit measures density of the measurement image. | 03-05-2015 |
20150104201 | PRINTING APPARATUS, PRINTING APPARATUS CONTROL METHOD, AND STORAGE MEDIUM - An offset image that can occur at a time when reading images printed on both sides of a sheet is automatically removed by a simple operation. | 04-16-2015 |
20150110505 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image forming unit that forms an image on a recording material; a cause ascertaining unit that ascertains a cause of a streaked image that is generated in the image that is formed on the recording material by the image forming unit; and an outputting unit that outputs information regarding the cause ascertained by the cause ascertaining unit. | 04-23-2015 |
20150117875 | IMAGE FORMING APPARATUS, NON-TRANSITORY COMPUTER READABLE MEDIUM, AND IMAGE FORMING METHOD - An image forming apparatus includes an image forming unit and a controller. The image forming unit forms an image on each medium with a metallic toner. The controller controls the image forming unit such that, in the formation of an image on each medium of plural media different in reflectance, the metallic toner has a toner weight according to the medium. | 04-30-2015 |
20150378295 | IMAGE FORMING APPARATUS - An image forming apparatus has a patch forming unit, a reversing unit, a patch detecting unit, and a fixing condition correcting unit. The patch forming unit forms a patch for fixability test on conveyed paper by a fixing roller having a fixing condition set corresponding to the execution of a print job. The reversing unit reverses the paper on which the patch for fixability test is formed from the front surface to the back surface through a reversing and conveying path. The patch forming unit detects a characteristic value of the patch for fixability test of the reversed paper using a medium sensor which detects the characteristic value of the back surface of the paper. The fixing condition correcting unit corrects the fixing condition based on the detected characteristic value of the patch for fixability test. | 12-31-2015 |
20160041488 | IMAGE FORMING SYSTEM, CONTROLLER AND RECORDING MEDIUM - An image forming system includes an image former forming an image with a white coloring material and a colored coloring material; an output controller controlling the image former to output a first correction sheet formed with the colored coloring material, and a second correction sheet including a first layer formed with the colored coloring material and a second layer formed with the white coloring material overlying the first layer; a density measurer measuring color densities of the first and the second correction sheets; a first corrector correcting a gradation of the colored coloring material, based on the measured color density of the first correction sheet; and a second corrector correcting a gradation of the white coloring material, based on the measured color density of the second correction sheet including the first layer formed with a gradation value in accordance with the gradation correction result of the colored coloring material. | 02-11-2016 |
20160062296 | IMAGE FORMING DEVICE, IMAGE FORMING SYSTEM, IMAGE DETECTING UNIT CORRECTING METHOD AND IMAGE DETECTING DEVICE - An image forming device includes an image forming unit, a conveying unit, a first image detecting unit, a second image detecting unit, and a controller, wherein the controller includes a detecting unit correcting mode in which the first image detecting unit is corrected by using an image detection result by the second image detecting unit, and in the detecting unit correcting mode, a transfer paper conveying speed at the time of image reading by the second image detecting unit is changed to the transfer paper conveying speed different from a normal transfer paper conveying speed at the time of image formation and the first image detecting unit is corrected based on read results of the same image by the first and second image detecting units. | 03-03-2016 |
20160252837 | IMAGE FORMING SYSTEM AND IMAGE FORMING APPARATUS | 09-01-2016 |