Patent application number | Description | Published |
20100323463 | METHOD FOR MANUFACTURING LIQUID DISCHARGE HEAD - A method for manufacturing a substrate for a liquid discharge head provided with a silicon substrate and a supply port, including: providing the silicon substrate having an insulating layer on a first surface and an etching mask layer having a plurality of apertures on a second surface which is a rear surface of the first surface, wherein the insulating layer is provided in a region ranging from a position opposing the apertures to a position opposing a portion between the adjacent apertures of the mask layer; and forming holes by etching a silicon part of the silicon substrate so that an etched region reaches a portion of the insulating layer opposing the apertures, wherein the silicon wall provided between the adjacent holes is etched so that the portion in the first surface side thereof can be thinner than the portion in the second surface side thereof. | 12-23-2010 |
20110041337 | METHOD OF MANUFACTURING LIQUID DISCHARGE HEAD SUBSTRATE AND METHOD OF PROCESSING THE SUBSTRATE - A method of processing a liquid discharge head substrate includes the step of providing the substrate, and the step of providing a recessed portion at a back surface of the substrate by discharging liquid in a linear form to the back surface of the substrate, and by processing the back surface of the substrate with laser light that has passed along the liquid and in the liquid. | 02-24-2011 |
20110287562 | METHOD OF MANUFACTURING LIQUID DISCHARGE HEAD SUBSTRATE, METHOD OF MANUFACTURING LIQUID DISCHARGE HEAD, AND METHOD OF MANUFACTURING LIQUID DISCHARGE HEAD ASSEMBLY - A method of manufacturing a liquid discharge head substrate, includes forming an etching mask layer having an opening in a shape corresponding to a plurality of second portions on a second plane of the substrate, forming a recess to be a first portion by etching the substrate through the opening of the etching mask layer from a second plane side of the substrate, and forming the plurality of second portions by etching a portion from a bottom of a first portion to a first plane using the etching mask layer as a mask from the second plane side of the substrate to forma liquid supply port passing through the substrate. | 11-24-2011 |
20130139388 | METHOD FOR MANUFACTURING LIQUID EJECTION HEAD SUBSTRATE - A method for manufacturing a liquid ejection head substrate, including: (1) a step for etching a substrate, which has an energy generating element at a side of a first surface, from a side of a second surface, which is a surface on the opposite side from the first surface, thereby to form at a time at least a part of a liquid supply port and a recess along a cutting section of the substrate; (2) a step for irradiating a laser beam toward the side of first surface from the etched surface of the recess so as to form a reformed portion inside the substrate; and (3) a step for cutting the substrate at the reformed portion. | 06-06-2013 |
20140315335 | METHOD OF PROCESSING SUBSTRATE - A method of processing a substrate includes forming holes in bottom portions of a plurality of recesses formed in a substrate to be arranged in an array direction at a predetermined pitch by performing reactive ion etching on the bottom portions of the plurality of recesses. The forming holes in the bottom portions of the plurality of recesses is a process of preparing a substrate in which a dummy recess serving as a dummy is formed on at least one side of the array direction, in which the plurality of recesses that include the bottom portions in which the holes are formed are arranged, such that a recess is formed on both sides of a recess so that the plurality of recesses are formed at the predetermined pitch in the array direction and performing reactive ion etching on the bottom portions of the plurality of recesses of the prepared substrate. | 10-23-2014 |
20140363907 | PROCESSES FOR PRODUCING SUBSTRATE FOR LIQUID EJECTION HEAD - A process for producing a substrate for a liquid ejection head, including a step of forming a liquid supply port passing through a silicon substrate by dry etching, the step being a step of sequentially repeating the steps of (1) forming an etching protection film on the silicon substrate, (2) removing a bottom portion of the etching protection film, and (3) etching the silicon substrate, wherein a sheath formed in the step (2) is thicker than a sheath formed in the step (3). | 12-11-2014 |
20150024604 | METHOD OF ETCHING A SILICON SUBSTRATE - A method of etching a silicon substrate, in which a depressed portion is formed by etching a first surface of the silicon substrate with ions generated in plasma, the method including introducing a rare gas into a reaction system to ionize the rare gas. | 01-22-2015 |
Patent application number | Description | Published |
20090315959 | RECORDING HEAD AND RECORDING APPARATUS - A recording head includes ejection ports that eject ink, a first liquid chamber for supplying ink to the ejection ports, a second liquid chamber for supplying ink to the first liquid chamber, a gas reservoir disposed in the upper part of the first liquid chamber and collecting gas, a first outlet through which fluid is discharged out of the gas reservoir, and a pump chamber into which fluid is moved through the first outlet out of the first liquid chamber by producing a pressure difference from the first liquid chamber. | 12-24-2009 |
20110310159 | INKJET APPARATUS AND METHOD OF JUDGING REPLACEMENT TIMING FOR COMPONENTS OF THE APPARATUS - In an inkjet apparatus using an inkjet head ejecting multiple types of inks different in viscosity after evaporation of solvent, a replacement timing for a component is judged by using a consumption amount of each type of ink and a generation rate in amount of ink droplets. Accordingly, in the case of using a large amount of ink strongly susceptible to fixed adhesion and increase in viscosity, the component is replaced at an earlier timing, which prevents fixed adhesion from influencing the print performance and the printing apparatus main body. By contrast, in the case of using a large amount of ink less susceptible to fixed adhesion and increase in viscosity, the component is replaced at a later timing and thus can be used until reaching its lifetime. | 12-22-2011 |
20110310160 | INKJET APPARATUS AND METHOD FOR JUDGING REPLACEMENT TIMING FOR COMPONENTS OF THE APPARATUS - In an inkjet apparatus capable of ejecting an ink and a treatment liquid for insolubilizing or coagulating a color material in the ink, a replacement timing for a component of the apparatus is judged based on both the consumption amounts of the ink and treatment liquid measured when the two are consumed together and the consumption amount of the ink measured when the ink is consumed alone. Thus, the component is replaced at an earlier timing when the influence of fixed adhesion is great due to frequent ejection of both of the ink and treatment liquid, which prevents fixed adhesion from influencing the print performance and the printing apparatus main body. By contrast, when the fixed adhesion slowly develops because of less-frequent ejection of both of the ink and treatment liquid, the component is replaced at a later timing and thus can be used until reaching its lifetime. | 12-22-2011 |
20120026230 | INKJET PRINTING APPARATUS - This invention prevents a possible color mixing, that may occur more than a predetermined time after the wiping operation, by executing a pre-printing cleaning ejection while at the same time minimizing the amount of waste ink produced by the cleaning ejection. To this end, if a color mixing is determined as being likely to occur an elapsed time after the previous wiping operation, the pre-printing cleaning ejection uses a second ink volume U, which represents both the color mixing elimination ink volume and the ejection failure elimination ink volume. If it is decided that there is no likelihood of the color mixing occurring the elapsed time after the wiping operation, the pre-printing cleaning ejection uses the first ink volume D which represents only the ejection failure elimination ink volume. | 02-02-2012 |
20120176438 | INKJET RECORDING APPARATUS - An inkjet recording apparatus that suppresses temperature rising of a recording head to decrease standby time when the recording head is high in temperature, thereby reducing a drop in recording speed and degradation in image quality. The inkjet recording apparatus includes a recording head configured to have a discharge port surface in which a discharge port for discharging ink is formed, a temperature sensor configured to detect temperature of the recording head, and a cleaning unit configured to make contact with the recording head to clean the discharge port surface. The inkjet recording apparatus controls whether to make the cleaning unit contact the discharge port surface based on the recording head temperature detected by the temperature sensor. | 07-12-2012 |
20120188304 | INKJET PRINT APPARATUS AND INKJET CONTROL METHOD - When performing at least one of preliminary ejection or a suction unit as a countermeasure against adhering ink that accumulates in the portion where preliminary ejection is performed, the preliminary ejection amount and suction speed of the suction unit are optimized. An inkjet print apparatus that prints by using a printing head for ejecting ink, comprising: an ejecting unit; a sucking unit; a measuring unit that measures an elapsed time after the sucking unit is performed; and a control unit that control ejection by the ejecting unit or sucking by the sucking unit according to the elapsed time measured in the measuring unit; wherein as the elapsed time becomes longer, the amount of ink that is ejected to the ink receiving unit in the ejecting unit is increased or a suction speed at which the ink is sucked in the sucking unit is increased. | 07-26-2012 |
20130027489 | PRINTING APPARATUS - A printing apparatus includes a printing unit configured to apply ink to a recording medium while reciprocating a print head with respect to the recording medium and a drying unit configured to apply energy for accelerating dryness to the recording medium to which the ink is applied by the print head. The drying unit applies a larger energy at edges of a range within which the printing unit moves on the recording medium than at a middle of the range. | 01-31-2013 |
20130235107 | COLOR MEASURING METHOD AND RECORDING APPARATUS - A color measuring method includes: recording color patterns on a sheet by an inkjet head; measuring colors of the color patterns formed on the sheet; and recovering the inkjet head, wherein the recovering is prohibited within a period after the recording and before the measuring. | 09-12-2013 |
20130257931 | INK JET RECORDING APPARATUS AND METHOD OF WIPING RECORDING HEAD - An ink jet recording apparatus includes a recording head, a carriage, a wiping unit, and a control unit. The recording head includes a discharging port surface provided with a first discharging port row group having at least one discharge port row formed by arraying a plurality of discharging ports in a predetermined direction and a second discharging port row group having at least one discharge port row formed by arraying a plurality of discharging ports in a predetermined direction. The carriage causes the recording head to scan reciprocally in a direction intersecting the predetermined direction. The wiping unit includes a sheet member for wiping the discharge port surface and a winding device to wind the sheet member. The control unit controls the winding device so that the first discharge port row group and the second discharge port row group are wiped with different areas of the sheet member. | 10-03-2013 |
20130257977 | PRINTING APPARATUS - A printing apparatus includes a print head, a scanning unit, a sheet-form member, a winding device, and a determining unit. The print head includes an orifice face having an ejection orifice to eject a liquid. The scanning unit performs scanning while reciprocating the print head. The sheet-form member performs a wiping operation of the orifice face of the print head, wherein the wiping operation includes a first wiping operation and a second wiping operation. The winding device performs a winding operation of the sheet-form member. The determining unit determines a length of the sheet-form member that is to be wound by the winding device in accordance with a length of time between the first wiping operation performed by the sheet-form member and the second wiping operation performed by the sheet-form member that follows the first wiping operation. | 10-03-2013 |
20130257978 | INKJET RECORDING APPARATUS AND METHOD FOR CONTROLLING THE SAME - An inkjet recording apparatus includes a recording head, a carriage, a wiping unit, and a controller. The recording head has a discharge port face with a plurality of discharge ports to discharge ink. The carriage has the recording head mounted thereon and performs reciprocal scanning. The wiping unit includes a sheet-shaped wiping member to wipe the discharge port face and a conveying unit to convey the wiping member. The controller controls an amount of conveyance of the wiping member by the conveying unit. The controller performs control so that the conveyance amount in a first case, where a time elapsed since a last conveyance operation of the wiping member is greater than or equal to a certain time, becomes greater than the conveyance amount in a second case, where the time elapsed since the last conveyance operation of the wiping member is less than the certain time. | 10-03-2013 |
20130257980 | INKJET PRINTING APPARATUS AND CONTROL METHOD - An inkjet printing apparatus includes a purge unit having a sheet member that purges ink deposited on an orifice face of a print head and a winding unit that winds the sheet member. By using the number of ink ejections executed between a first purge operation and a second purge operation, the amount of winding of the sheet member is controlled after the second purge operation is completed. | 10-03-2013 |
20130286063 | INK FILLING METHOD AND INKJET RECORDING APPARATUS - An inkjet recording apparatus includes a recording head including a discharge port, a carriage configured to perform reciprocating scanning with the recording head mounted thereon, a main tank configured to store ink, a sub-tank configured to be supplied with ink from the main tank via a tube, a supply tube configured to connect the recording head and the sub-tank, and a control unit configured to control the carriage, wherein the control unit controls acceleration of the carriage such that a dynamic pressure of ink inside the supply tube becomes greater than a pressure resistance to an ink movement and a pressure resistance to an air movement in the tube. | 10-31-2013 |
20130286065 | INK FILLING METHOD AND INKJET RECORDING APPARATUS - An inkjet recording apparatus includes a recording head, a carriage with the recording head mounted thereon, a main tank, a sub-tank configured to be supplied with ink from the main tank via a tube, a supply tube configured to connect the recording head and the sub-tank, a supply unit connected to the supply tube and configured to supply ink from the main tank to the sub-tank, and a control unit configured to control acceleration of the carriage and to control the supply unit, wherein, when an empty volume in the sub-tank is greater than or equal to an ink volume in the main tank, the supply unit is controlled to supply ink to the sub-tank. | 10-31-2013 |
20130286078 | RECORDING APPARATUS AND COLOR MEASURING METHOD FOR RECORDING APPARATUS - A recording apparatus includes: a recording unit for applying ink on a sheet by a printing head; a drying unit for drying the sheet; a measuring unit for measuring patterns on the sheet; a conveying unit for conveying the sheet; a recovering unit for performing a printing head-recovering operation; and a control unit for controlling the apparatus such that, the recording apparatus performs recording to form patterns, the conveying unit performs first conveying to convey the sheet from a recording region to a drying region, the drying unit performs drying, the conveying unit performs second conveying to convey the sheet from the drying region to a measuring region, and the measuring unit performs measuring, in sequence, wherein the recovering operation is performed at timing at least partially overlapping at least one of the first and second conveying operations, the drying operation, and the color measuring operation, after the recording operation. | 10-31-2013 |
20140218440 | PRINTING APPARATUS AND CLEANING METHOD THEREOF - An embodiment of the present invention provides a wiping method capable of preventing a problem such as color mixing or a discharge failure in a wiping operation during the reciprocating motion of a carriage. According to the embodiment, one or a plurality of orifice arrays out of a plurality of orifice arrays included in a printhead are wiped by making a sheet-like wiping member contact to the orifice surface of the printhead. After that, the wiping member is separated from the orifice surface of the printhead, and the used wiping member is wound. Then, the wiping member is made to contact to the orifice surface of the printhead again, and the next one or more orifice arrays are wiped. | 08-07-2014 |
20140313260 | INK JET RECORDING APPARATUS - In the case where a preliminary discharge operation is always performed at a position that is spaced apart from a recording area, the time taken for a recording head to be moved to a preliminary discharge position is increased, and this results in a decrease in throughput. In the case where it is determined that a leading end or a trailing end of a recording medium is located on a platen, positions at which the distance from an end of a recording medium to a recording head with respect to a moving direction is not smaller than a threshold are determined as preliminary discharge positions, and the recording head is controlled to perform a preliminary discharge operation. | 10-23-2014 |
20140340446 | INKJET RECORDING APPARATUS AND CONTROL METHOD FOR THE INKJET RECORDING APPARATUS - While a wiping operation for keeping a satisfactory ejection opening surface of an inkjet recording head is performed, a usage amount of a sheet-like member is to be reduced. An inkjet recording apparatus includes a recording head, a sheet-like member, a reeling roller that reels the sheet-like member | 11-20-2014 |
20140368577 | INKJET RECORDING APPARATUS AND CONTROL METHOD FOR WIPING UNIT - While a wiping operation for keeping a satisfactory ejection opening surface of an inkjet recording head is performed, a usage amount of a sheet-like member is to be reduced. A contamination state of a wiping area after the wiping operation is determined, and a timing of reeling the sheet-like member in a wiping unit is controlled in accordance with a determination result of the contamination state. | 12-18-2014 |
20150062231 | PRINTING APPARATUS AND CONTROL METHOD - The present invention provided a printing apparatus including: an ink storage section; a detection unit detecting an ink remaining amount of the section; a printhead; an air communication section communicating with the section and air; a suction unit; and a control unit. When a predetermined transport-preparation condition regarding transport of the printing apparatus is satisfied, the control unit saves information about the ink remaining amount detected by the detection unit and controls the suction unit to drain ink in the air communication section through the printhead. When a predetermined start-up condition is satisfied, the control unit controls, based on the information, the suction unit to suck ink from the printhead. | 03-05-2015 |