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| Number | Title | Issue Date |
| 7518759 | Readout system for a CMOS-based image sensor array In an image sensor having a plurality of photodiodes, subsets of photodiodes share a common node for signals to be sent to an amplifier. Within each subset, each individual photodiode is selected for sending signals to the amplifier by an associated selection device... | 04/14/2009 |
| 7511864 | Image scanning apparatus that scans both sides of an input sheet A document handler, such as used in a digital copier, includes an input tray and an output tray, connected by a paper path. Along the paper path are disposed two scan heads, one to record image data from each side of the sheet. The two scan heads are separated from ... | 03/31/2009 |
| 7506062 | Scanner-initiated network-based image input scanning An image input scanner sends image data derived from scanned hard-copy documents directly to the network address of a destination computer which is selected at a user interface of the scanner. A driver at the destination computer activates an image acquisition progr... | 03/17/2009 |
| 7505704 | Lubrication-stripe system for a xerographic printer using an electrostatic cleaning brush and spots blade A xerographic printer includes a cleaning system having an electrically biased brush and a spots blade downstream of the brush. At various times a “lubrication stripe” dense toner is placed on a photoreceptor to lubricate the spots blade. In order for the lubric... | 03/17/2009 |
| 7499158 | Positionable calibration target for a digital printer or image scanner A structure for calibrating an image sensor or other photosensor includes a baffle for passage of a sheet therethrough. A photosensor is disposed to receive light reflected from a sheet passing through the baffle. A selectably-positionable target member has a target... | 03/03/2009 |
| 7493060 | Cleaning system for removing dendrites from a charging device in a xerographic printer In a xerographic printing apparatus, a charge device is used to apply a charge to a photoreceptor. The charge device includes a wire. A shuttle moves along the charge device, and includes a brush wherein the sides of the bristles contact the wire. When the brush mov... | 02/17/2009 |
| 7471327 | Image sensor array with variable resolution and high-speed output A photosensitive imaging apparatus has a linear array of groups of photosensors. In a low-resolution scanning mode, all of the photosensors in each group act together as one large photosensor. In a high-resolution scanning mode, each photosensor in a group acts outp... | 12/30/2008 |
| 7467879 | Document illuminator with stepped optical element An apparatus for scanning a document comprises a platen for supporting at least a portion of the document; a light source; and an optical element for directing light from the light source to the platen. The optical element defines a plurality of small planar surface... | 12/23/2008 |
| 7460822 | Printing roll having a controllable heat-absorbing internal surface A roll useful in fusing marking material to a print sheet includes a coating disposed on at least a portion of the inner surface thereof. A lamp disposed inside the roll supplies radiant energy to the inner surface. The coating changes its absorptivity (such as colo... | 12/02/2008 |
| 7460805 | System for initiating image-quality tests in a digital printer A method of operating a digital printer comprises printing a machine-readable code and at least one test patch on at least one sheet. The photosensor detects the machine readable code on the moving sheet, and, in response to the detecting, initiates the photosensor ... | 12/02/2008 |
| 7457006 | Calibration system for a scanner for recording images from sheets An image input scanner having two scan heads for simultaneous scanning of both sides of a sheet includes two calibration surfaces. A first calibration surface is disposed on the carriage on which a first scan head is mounted. A second calibration surface is disposed... | 11/25/2008 |
| 7458083 | Architecture for software for interactively communicate with a machine and remotely maintenance the machine Software in a computer which accesses one or more software-intensive devices, such as a digital copier or printer, is organized in a set of layers. A device-dependent layer converts data transferred over various means, such as a modem or network, to a uniform data f... | 11/25/2008 |
| 7446907 | Photosensor architecture for a color raster input scanner In an image sensor array, as would be used in an input scanner such as in a digital copier, an original image is moved relative to a linear array of photosites. Each photosite includes at least two wide photosensors, each of which extends substantially across the ph... | 11/04/2008 |
| 7437120 | Optical sensor for monitoring motion of a blank sheet An apparatus monitors the motion of sheet, such as in a digital printer. An optical sensor is capable of recording an image in a two-dimensional array of pixels, and has acuity to recognize a terrain of a small area on a sheet that is substantially blank to a human ... | 10/14/2008 |
| 7430055 | System for cloning digital printer settings by sending a clone file as a print job In a network printing environment having a host computer and a plurality of printers, printer settings from the website of one printer are used to create a text file held in the host computer. The host computer adds a heading to the text file, and sends the text fil... | 09/30/2008 |
| 7418216 | System for predicting erasure of test patches in a printing apparatus In a printing apparatus having a rotatable imaging member, a test patch is created in a predetermined area of the imaging member. A density of the test patch is measured at least a first time, corresponding to a first rotation of the imaging member. Based at least p... | 08/26/2008 |
| 7412186 | Cleaning system for a charging device in a xerographic printer In a xerographic printing apparatus, a charge device is used to apply a charge to a photoreceptor. The shuttle includes a wiper that cleans a sidewall of the charge device. A tab is disposed adjacent the sidewall to retain toner or dirt accumulated by the scraper. T... | 08/12/2008 |
| 7409086 | Segmentation of image data In an image processing system, successive segmentation steps are carried out. In the case of a “hole” in the segmentation result, which is defined as a small area of one type (such as black) within a slightly larger “island” of another type (such as white), ... | 08/05/2008 |
| 7377416 | Ultrasonic welding horn for welding a seam in an imaging receptor belt In ultrasonic welding of a seam, such as for creation of an imaging belt, an ultrasonic welding horn is applied to an overlap area. The welding horn has a contact surface within a certain set of dimensions comparable to the overlap area. The welding horn defines a c... | 05/27/2008 |
| 7321737 | System for authenticating modules installed in machines, such as printing apparatus A method of operating a machine, such as a digital printing apparatus, involves installing into the machine a module having a first random number generator associated therewith, and, incidental to installing the module, initiating a second random number generator as... | 01/22/2008 |
| 7307741 | Printer with integral automatic pre-printed sheets insertion system An automatic pre-printed sheets insertion system integratable into an otherwise conventional printer, without requiring any additional space, yet enabling the feeding of selected pre-printed sheets into the printer output path, bypassing the print engine and fuser, ... | 12/11/2007 |
| 7302097 | MRC image compression A method of processing an MRC image file, comprising at least a mask plane and a background plane, comprises determining that at least one of the mask plane and background plane is substantially empty; and effectively removing the substantially empty plane from the ... | 11/27/2007 |
| 7295786 | System for managing a digital printer having active and inactive operational modes A digital printer is operable in an inactive mode, such as a sleep mode or a cycle-in mode, and an active mode. In response to receiving a first print request, the digital printer delays beginning switching from the inactive mode to the active mode, for a delay peri... | 11/13/2007 |
| 7295341 | System for processing monochrome and full-color digital image data In a system for processing full-color image data, such as within a digital color printer or copier, a four-channel architecture is used. Three of the channels handle image data relating to primary color planes, such as CMY. In the other channel, values relating to t... | 11/13/2007 |
| 7292710 | System for recording image data from a set of sheets having similar graphic elements In an input scanning system, as would be present in a digital copier, a “template” of similar visual elements or objects, such as logos and other designs, is detected among a series of scanned images. The common objects form a reference image against which subse... | 11/06/2007 |
| 7280253 | System for identifying low-frequency halftone screens in image data In a system, such as in a digital copier, for classifying image data derived from an original image, the image data is enhanced before submission to a classification analysis. In the enhancement, portions of the image having a measured roughness (degree of gray leve... | 10/09/2007 |
| 7271380 | Color input scanner calibration system A photosensitive apparatus, such as scanner, includes a plurality of pixels, each pixel having associated therewith a set of photosensors, each photosensor filtered to record a primary color. The photosensors are exposed to light of each primary color separately, th... | 09/18/2007 |
| 7242894 | Xerographic transfer station using a belt An electrostatographic printing apparatus comprises a charge receptor, and a transfer station for transferring a toner image from the charge receptor to a sheet. The sheet passes through a nip formed between the charge receptor and a moving transfer belt. Upstream o... | 07/10/2007 |
| 7228365 | System for determining communication parameters associated with an unknown digital printer A port monitor allows a computer, digital camera, or other device to send a print job to a target printer, where the only known information about the printer is its network address. Communication is attempted to the network address, sequentially using each of a plur... | 06/05/2007 |
| 7224919 | Scheduling system for placing test patches of various types in a printing apparatus A digital printing apparatus comprises a rotatable image receptor defining a plurality of test zones along a circumference thereof. Test patches on the image receptor are requested for each of a plurality of types of test routines. A table is used for scheduling tes... | 05/29/2007 |
| 7206538 | Xerographic developer unit with specialized exit port for developer material In a basic design of a developer unit for electrostatographic printing apparatus, an exit port is defined in the housing of the developer unit, for the passage of waste or surplus toner therethrough. An insert, defining a predetermined spillover barrier height and a... | 04/17/2007 |
| 7200613 | Asset management system for network-based and non-network-based assets and information A server on a network controls a database which functions as an “asset manager” for a large population of items or assets. For “network” assets which are capable of electronically communicating data about themselves, such as computers and digital printers, r... | 04/03/2007 |
| 7190876 | Image input scanner having a waveguide platen In an apparatus for recording an image, a light transmissive waveguide defines a thick end, a thin end, and a main plane disposed between the thick end and the thin end. An image-recording device is disposed adjacent the thick end of the waveguide, the image-recordi... | 03/13/2007 |
| 7190837 | Compression of mixed raster content (MRC) image data In a mixed raster content (MRC) image data format, where a separation plane is used to define portions of the image to compressed in a lossy or lossless manner, edge pixels are identified in the separation plane. Each edge pixel is modified to assume a maximum lumin... | 03/13/2007 |
| 7187461 | System for managing digital printers and servers via a network In a network comprising printers and print servers which retain queues of print jobs, a user is able to survey and view selected portions of the network, either by enumerating printers to be queried directly, or by enumerating servers. By providing substantially sim... | 03/06/2007 |
| 7164506 | Multi-chip image sensor, on chip apparatus for causing each chip to selectably function in a parallel or serial readout In a photosensitive imaging apparatus having multiple chips, each chip having a set of photosensors, chips of a single basic design can be instructed to operate consistently with either parallel or serial readout of the apparatus. Signals on a shift register line as... | 01/16/2007 |
| 7158746 | Xerographic printer having a semiresistive rotatable brush in the transfer zone An electrostatographic printing apparatus comprises a charge receptor, and a brush forming a nip against a portion of the charge receptor. The nip is suitable for passing a sheet therethrough. The brush comprises fibers, each fiber being semi-resistive. ... | 01/02/2007 |
| 7151905 | Roller for supporting an imaging belt in a printing apparatus A belt photoreceptor in a xerographic printer is entrained on a roller formed from a set of discs. Each disc defines an outer circumference and a flexible main portion. The outer circumferences of a set of discs effectively form a single outer surface of the roller.... | 12/19/2006 |
| 7149458 | Xerographic charging device having three pin arrays In a xerographic printing apparatus, a scorotron places a uniform charge on a photoreceptor for forming electrostatic latent images. Three conductive pin arrays are disposed in a housing defined by sidewalls and a screen adjacent the photoreceptor. There can be prov... | 12/12/2006 |
| 7142793 | Xerographic fusing apparatus with a temperature-sensitive positioning mechanism for a heating element An apparatus for fusing print sheets, such as in xerographic printing, comprises a heating element, and a temperature-sensitive mounting for the heating element. The mounting changes a position of the heating element over the course of use of the apparatus, thereby ... | 11/28/2006 |
