Patent application number | Description | Published |
20110158661 | APPARATUS AND METHOD FOR DETERMINING PHOTORECEPTOR CHARGE TRANSPORT LAYER THICKNESS OF APPARATUS USING A SCOROTRON CHARGE DEVICE - A photoreceptor charge transport layer thickness determining apparatus for a photoreceptor including a scorotron charge device having coronode wires and a scorotron grid positioned between the corona wires and the photoreceptor charge transport layer, the scorotron charge device being configured to charge the photoreceptor layer using corona discharge to generate ions directed to a surface of the photoreceptor charge transport layer. A first current measuring device measures a current supplied to the coronode wires and outputs a first current value, a second current measuring device measures a current being delivered to the scorotron grid and outputs a second current value, and a processor receives the first and second current values and determines a current delivered to the photoreceptor charge transport layer by subtracting the second current value from the first current value, and determines a thickness of the photoreceptor charge transport layer using the current value. | 06-30-2011 |
20110211879 | APPARATUSES USEFUL IN PRINTING ONTO MEDIA AND METHODS OF MITIGATING MEDIA EDGE WEAR EFFECTS ON FIXING BELTS IN PRINTING - Apparatuses useful in printing and methods of mitigating media edge wear effects on fixing belts in printing are provided. An exemplary apparatus useful for printing onto media includes a first roll including a first surface; a second roll including a second surface; a fixing member including a third surface; a fixing belt supported on the first surface and second surface, the fixing belt including a surface forming a nip with the fixing member; a registration distribution system for translating the first roll, second roll, fixing member and fixing belt, as a unit, transversely with respect to a media travel path of media received at the nip; and a belt steering mechanism connected to the second roll for translating the fixing belt across the first surface of the first roll at the nip, transversely to the media travel path, while the registration distribution system translates the first roll, second roll, fixing member and fixing belt transversely to the media travel path. | 09-01-2011 |
20110286753 | PHOTORECEPTOR DIAGNOSTIC METHOD BASED ON DETECTION OF CHARGE DEFICIENT SPOTS - Systems and methods of diagnosing a photoreceptor associated with an imaging device. The photoreceptor is configured to enter into a diagnostic cycle to complete a set number of cycles. A sensor or array is configured to a scan a component associated with the imaging device during each of the set of cycles to establish defect data. The defect data is analyzed to filter one or more charge deficient spots (CDS) from background noise in the defect data. The systems and methods determine whether the photoreceptor needs replacement based on the determined one or more CDS. The systems and methods are further configured to output a report of the determination. The determination is conducted at fixed or variable intervals throughout the life of the photoreceptor and/or imaging device. | 11-24-2011 |
20110288821 | SYSTEMS AND METHODS FOR PREDICTING THE USEABLE LIFE OF A PHOTORECEPTOR IN IMAGING DEVICES - Systems and methods of determining a predicted usable life of components, such as a photoreceptor, associated with an imaging device. The systems and methods include a power source configured to increase an electric field across the photoreceptor. A sensor or array is configured to detect charge deficient spots (CDS) in a charge transport layer (CTL) of the photoreceptor as a result of increasing the electric field. The systems and methods are configured to determine the predicted useable life of the photoreceptor based on the detected CDS. The systems and methods are further configured to output a report of the estimation. The estimation is conducted at fixed or variable intervals throughout the life of the photoreceptor and/or imaging device. | 11-24-2011 |
20120274997 | PROCESS DIRECTION STREAK SOURCE DIAGNOSIS IN PRINTERS - Methods and systems print a multi-color test pattern using a printing device to create a printed test pattern when the printing device is producing a printing defect. The methods and systems scan the printed test pattern to produce a scanned image and decompose the scanned image into color blocks using the computerized device. The methods and systems create intensity profiles of the color blocks using the computerized device and compare at least two of the intensity profiles of different colors to determine whether the intensity profiles indicate correlated printing defects using the computerized device. The methods and systems indicate, through the computerized device, whether a potential defect within a common printing element of the printing device or is located within one or more of the color printing elements of the printing device, depending upon whether the intensity profiles have correlated printing defects. | 11-01-2012 |
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 |
20130265594 | INTERACTIVE TOOL FOR INCORPORATING USER INPUT AND FEEDBACK IN IMAGE QUALITY RELATED DIAGNOSIS - The presently disclosed embodiment provides an interactive tool for printed image artifact characterization that successfully combines the advantages from both a human visual system and automated image quality characterization. In the interactive tool provided, the user may specify coarse level information, such as the region of interest in a print image, to be examined by the automated image-quality characterization algorithm, which can then employ sophisticated algorithms, e.g. signal processing, feature extraction, estimation and classification, to find precise fine-level descriptors. | 10-10-2013 |
20130265595 | ROBUST RECOGNITION OF CLUSTERS OF STREAKS AT MULTIPLE SCALES - The present disclosure is generally related to the field of printing, and other processes based on the continuous deposition of material, including industrial molding or extrusion processes, and more particularly to techniques for grouping object quality anomalies in a specified region of an object based on context-specific characterization and shared descriptive profile features. | 10-10-2013 |
20140258186 | Generic Programming for Diagnostic Models - A system for compiling a machine operable diagnostic system includes a header unit, a component unit, an effects unit, a test unit, and an instantiation unit. The header unit identifies general properties of a system from a generic description in an electronic format which includes at least one category of a plurality of variations. The component unit identifies a plurality of components of a modeled system from the generic description, and adds and separates the plurality of variations to the plurality of components, and each identified component includes at least one type of failure and a probability of the at least one type of failure. The effects unit identifies from the generic description a plurality of observable effects, each observable effect corresponding to at least one type of failure for at least one component. The test unit identifies from the generic description a plurality of tests and test outcomes designed to elicit the observable effects. The instantiation unit constructs a procedural instantiation of the machine operable diagnostic system based on the general properties, the identified components, the identified observable effects, and the identified tests and test outcomes. | 09-11-2014 |