Abstract: This disclosure provides methods, apparatus and systems for generating a multidimensional printer profile for a color printer. Specifically, the disclosure provides a method to blend multiple GCR functions or strategies to produce a final GCR blended printer profile, for example a printer profile LUT.
Type:
Grant
Filed:
May 27, 2008
Date of Patent:
May 31, 2011
Assignee:
Xerox Corporation
Inventors:
Yao Rong Wang, Alvaro Enrique Gil, Lalit Keshav Mestha, Martin S. Maltz
Abstract: A display medium including: a pair of substrates; a pair of electrodes disposed on the pair of substrates, and facing each other; and a functional layer and a display layer disposed between the pair of electrodes with an adhesive layer disposed between the functional layer and the display layer. The display layer includes a binder and microcapsules dispersed in the binder. The microcapsules have a polymer serving as a wall material, and a liquid crystal enclosed therein. A shape of an interface of the display layer at least on the side of the adhesive layer in a cross section along a thickness direction of the disposed layers is an irregular line having a distance between a highest protruding portion and a lowest depressed portion is from about 0.5 ?m to about 2.0 ?m.
Abstract: An image formation device is provided with an image formation section, an image acquisition section, a paper supply cassette and a support body. The image formation section forms images at a recording medium and is supported at a base surface. The image acquisition section is disposed at an upper side of the image formation section. The paper supply cassette is disposed at a lower side of the image formation section and can be drawn out to a near side. The support body supports the image acquisition section at the base surface and forms a cassette cavity which is capable of accommodating a far side of the paper supply cassette.
Abstract: A print process system includes a receiving section and an executing section. The receiving section receives (i) print data or reference information of the print data, (ii) an instruction of print process for the print data and (iii) process description data, which describes a series of processes performed after the print process, or reference information to the process description data. When the print process is executed according to the received instruction of the print process, the executing section executes a process based on the series of process instruction elements described in the process description data corresponding to the instruction of the print process.
Abstract: A recommendatory information provision system has a management apparatus and a user terminal device. The management apparatus includes a browsed information acquisition unit for acquiring information of a browsed document, a recommended document retrieval unit for retrieving a recommended document relevant to the browsed document, a recommendation history management unit for storing and managing history information which concerns recommendations of the recommended document, a recommendation history retrieval unit for retrieving from the recommendation history management unit, the history information of the recommended document which has been retrieved by the recommended document retrieval unit, and a recommendatory information provision unit for providing, to the user terminal device, the information concerning the recommended document and the history information of the recommended document as have been retrieved. The user terminal device has a display process unit for displaying the information on a screen.
Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer, and where the photogenerating layer contains at least one photogenerating component, and a mixture of an ester thiol and a poly(vinyl halide) copolymer.
Type:
Grant
Filed:
November 24, 2008
Date of Patent:
May 31, 2011
Assignee:
Xerox Corporation
Inventors:
Jin Wu, Marc J Livecchi, Linda L Ferrarese, John J Wilbert
Abstract: An electrophotographic photoreceptor includes an organic photosensitive layer and one or more inorganic thin film layers disposed in this order on a conductive substrate, in which among the one or more inorganic thin film layers at least an inorganic protective layer disposed directly on the organic photosensitive layer has cracks scattered at intervals from about 1 ?m to about 10 mm. The inorganic thin film layer having the cracks is a first protective layer and an inorganic thin film is grown on a surface of the first protective layer to form a second protective layer.
Abstract: What is provided are a novel system, method, and computer program product for hierarchical (telescopic) color error diffusion which effectively controls the dot distribution for both primary and secondary dot formation which covers the class of error diffusion that follow telescopic dot firing constraint principles. In one example embodiment, an input CMYK ink coverage is received. The input CMYK ink coverage is transformed into a CMYKRGB domain using a CMYK to CMYKRGB conversion. A weighted error value can be added to each color component of the CMYKRGB domain. The color components of the CMYKRGB domain are hierarchically grouped into a plurality of subgroups based on relative dot visibility. More visible subgroups are half-toned earlier to achieve maximum uniform dot distribution. Dots of specific color channels within subgroups are fired based on thresholding and a set of decision rules provided herein.
Abstract: A computer-based method and a system for indexing, querying, and ranking documents based on layout are provided. The method includes providing a plurality of documents to computer memory, extracting layout blocks from the provided documents, clustering the layout blocks into a plurality of layout block clusters, computing a representative block for each of the layout block clusters, generating a document index for each provided document based on the layout blocks of the document and the computed representatives blocks, clustering the created document indexes into a plurality of document index clusters, and generating a representative cluster index for each of the document index clusters. The indexes generated, together with the representative blocks and document index clusters, can be stored and used for retrieval of documents responsive to a layout query.
Abstract: A system and method for rendering an image file for outputting a copy of an image represented by the image file. In some embodiments, rendering the image includes generating an output file, such as an output bitmap based on a predetermined halftone. In one embodiment, the system comprises an input module, and a processor. The input module obtains a page description of the image to be output. In some instances, the page description includes one or more level masks designed to impart corresponding transparency levels to one or more objects in the page description.
Abstract: In a xerographic printer, a transfer station is controlled to apply a constant current to the photoreceptor. A print sheet having a high moisture content will cause the control system to make a high voltage drain to maintain the constant current. A signal related to the voltage drain is used to control a decurler. The system enables the decurler to be controlled on a sheet-by-sheet basis.
Abstract: A toner for development of an electrostatic image includes at least a crystalline polyester resin and a colorant. The toner shows a dielectric loss index ?? of 0.1 or less at 0.1 Hz and 500 V at 30° C. and 90% RH.
Abstract: A hologram reading apparatus includes: a unit for holding a hologram recording medium in which data page is recorded by irradiating as a single beam both reference light and signal light modulated by a spatial light modulator including a first pixel area for modulating the reference light and a second pixel area for modulating the signal light, a direction of an arrangement period of pixels in the first pixel area being different from that in the second pixel area; a Fourier transform lens subjecting reproduction light to a Fourier transformation; a filter disposed shielding the reference light at a first spatial frequency band and transmitting the signal light at a second spatial frequency band; and a unit for receiving the reproduction light and reading the data page modulated to the signal light included in the reproduction light.
Abstract: A method for determining if an image to be printed is subject to reload artifact, includes providing an image (which may be a low resolution version of the image) to be printed; locating within the image a first area to be printed requiring toner of sufficient quantity to cause reload of the donor roll; locating within the image a second area substantially one rotation of the donor roll subsequent to the first area; determining if the second region is a region of high area toner coverage, wherein high area toner coverage comprises toner coverage exceeding a predetermined threshold value; if the second region is a region of high area toner coverage, determining if the second region contains high frequency content; if the second region contains high frequency content, the second region is not subject to reload artifact; else the second region is subject to reload artifact.
Abstract: An air guide mechanism includes a box unit that incorporates a heating element therein; an air fan unit that is disposed within the box unit; and a guide unit that is disposed on a side of the box unit, wherein the guide unit guides the air to a portion of a round area formed due to the rotation of the vane portion from a first direction having an acute angle with respect to an inclination direction of the vane portion corresponding to the portion of the round area, and to an area, which is at least another portion of the round area and in which the first direction intersects at a non-acute angle with an inclination direction of the vane portion, from a second direction having a smaller angle than the non-acute angle.
Abstract: Systems and methods for forecasting print demand are disclosed. Print demand data is collected and stored for each print job processed during a selected time interval, and processed with a computer implemented service manager to obtain a first demand series with multiple demand components and a second demand series with one demand component. Each of the multiple demand components is less than, and the one demand component is greater than, a selected variability level. The service manager is adapted to (1) generate a first demand related forecast with a combination of the multiple demand components, and (2) use a neural network to generate a second demand related forecast with the one demand component. The neural network includes multiple neurons optimally weighted with respect to print-related demand data collected over selected time intervals. The number of neurons is optimized to improve forecasting accuracy and re-optimized after a selected time interval.
Abstract: Systems and methods are provided for compensating for streak defects in images formed by an image forming device, such as a digital printer. The methods include using a spatially varying printer model and run time updates to generate spatially varying tone reproduction curves (STRC actuation) in an iterative control system for improving streak correction in a digital printing machine. Streaks are rapidly learned and eliminated at cycle-up and tracked and eliminated during print run time using STRC actuation.
Abstract: Information indicating an area of an image and information indicating attributes of the image have been stored in an IC chip attached to an original paper. When a copying apparatus performs a character recognition process operation with respect to an image displayed on the original paper, the copying apparatus reads the information related to the area of the image and the information related to the attribute of this area from the IC chip attached to this original paper. Then the copying apparatus separates an area where a character is displayed therefrom. The copying apparatus executes the character recognition process operation with respect to the image of the separated area.
Abstract: A developing device includes a magnet roll magnetized with plural magnetic poles including a main magnetic pole, a sleeve in a cylindrical shape which is arranged so as to be opposed to an image holding body, and a supporting frame that stably supports the magnet roll in a manner of restraining the magnet roll from rotating in the tangential direction, and supports the sleeve so as to rotate in the tangential direction around the magnet roll. The magnet roll is so arranged that the main magnetic pole is opposed to the image holding body, and a point on the peripheral face where magnetic flux density of the main magnetic pole in the tangential direction at a position along the peripheral face of the magnet roll is zero is set at a position predetermined with respect to a position where the magnet roll comes most closely to the image holding body.
Abstract: The black color material includes a condensation product of a pyrrole compound represented by the following formula (1) and a squaric acid represented by the following formula (2):