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公开(公告)号：CA2077377A1
公开(公告)日：1993-03-10
申请号：CA2077377
申请日：1992-09-02
Applicant: XEROX CORP
Inventor： LOCE ROBERT P , BANTON MARTIN E , LAMA WILLIAM L , CIANCIOSI MICHAEL S , FETH SUSAN E , GARCIA KEVIN J , WU PETER K , GIRMAY GIRMAY K , SWANBERG MELVIN E
IPC: B41J2/44 , G02B26/10 , G02B26/12 , G06K15/12 , H04N1/113 , H04N1/40 , H04N1/46 , H04N1/04 , H04N1/23
Abstract: A pulsed imaging Raster Output Scanner utilizes pulse width modulation in conjunction with spatial filtering to form three exposure levels at the surface of a recording medium, one of the levels associated with a specific color. In a specific non-facet tracked scanner system, a light beam (84) from a laser source (82) is modulated, by an acousto-optic modulator (92), in accordance with a video signal supplied to the modulator by a control circuit (94). An anamorphic lens system (108) performs a Fourier transform on the modulated beam which is then filtered by a spatial bandpass filter (136) before being directed, by a rotating polygon scanner (142), across the recording medium (162).
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公开(公告)号：DE60141447D1
公开(公告)日：2010-04-15
申请号：DE60141447
申请日：2001-12-04
Applicant: XEROX CORP
Inventor： BANTON MARTIN E
Abstract: An imaging apparatus includes an input that receives a stream of image pixels (14) such as high addressable bits, multiple bits per pixel or binary image bits representing an input image and a processor (20) that processes and directs signals to an LED bar (38) that selectively exposes areas of a photoreceptor (36). The exposed areas of the photoreceptor (36) form a latent image, controlled by the processor (20), of areas of varied exposure based on surrounding pixels. The processor (20) examines the pixels (14) to determine an image structure beneficially adaptable to varied exposure and selects a pixel for varied exposure, such as increased or decreased exposure or altered timing to apply the pixel.
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公开(公告)号：DE69618901D1
公开(公告)日：2002-03-14
申请号：DE69618901
申请日：1996-10-30
Applicant: XEROX CORP
Inventor： BANTON MARTIN E
Abstract: Described herein is a method and apparatus for consistently rotating high addressability bitmap images to be rendered on a printing system. A first step encodes the high addressability image to produce a regular bitmap array and then rotates the regular array. A compact dot growth operation is applied to assure that exposure pulses for any gray pixels are consistently positioned to provide a consistent output which is independent of the rotation direction.
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公开(公告)号：DE69517566T2
公开(公告)日：2001-02-08
申请号：DE69517566
申请日：1995-08-22
Applicant: XEROX CORP
Inventor： BANTON MARTIN E
IPC: B41J2/52 , G03F3/08 , G03F5/00 , G06T5/00 , H04N1/405 , H04N1/407 , H04N1/46 , H04N1/52 , H04N1/60
Abstract: The system has a printer, capable of rendering density with n density levels, adapted to print the colour separations at distinct spatial resolutions, so that when the colour separations are superposed on a substrate, a selected colour is defined. A source of image signals describe the colour document with a number of colour separations, each image signal representing optical density as one of m levels for a discrete area of a colour separation. A spatial resolution scaler is connected to the source of image signals. A halftone processor reduces the number of levels m representing optical density in a subset of the colour separations to a number of levels n representing optical density, the processor generating a first periodic pattern at a first spatial resolution. A second halftone processor reduces the number of levels m representing optical density in at least one remaining colour separation to a number of levels n representing optical density, the processor generating a second periodic pattern at a second spatial resolution. A video processor directs the distinct spatial resolution signals processed at each halftone processor to the printer to print the processed colour image.
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公开(公告)号：MX9204582A
公开(公告)日：1994-05-31
申请号：MX9204582
申请日：1992-08-07
Applicant: XEROX CORP
Inventor： CIANCIOSI MICHAEL S , FETH SUSAN E , GARCIA KEVIN J , WU PETER K , GIRMAY GIRMAY K , SWANBERG MELVIN E , LOCE ROBERT P , BANTON MARTIN E , LAMA WILLIAM L
Abstract: A pulsed imaging Raster Output Scanner utilizes pulse width modulation in conjunction with spatial filtering to form three exposure levels at the surface of a recording medium, one of the levels associated with a specific color. In a specific non-facet tracked scanner system, a light beam (84) from a laser source (82) is modulated, by an acousto-optic modulator (92), in accordance with a video signal supplied to the modulator by a control circuit (94). An anamorphic lens system (108) performs a Fourier transform on the modulated beam which is then filtered by a spatial bandpass filter (136) before being directed, by a rotating polygon scanner (142), across the recording medium (162).
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Patent Agency Ranking
公开(公告)号：BR9203360A
公开(公告)日：1993-04-13
申请号：BR9203360
申请日：1992-08-27
Applicant: XEROX CORP
Inventor： LOCE ROBERT P , BANTON MARTIN E , LAMA WILLIAM L , CIANCIOSI MICHAEL S , FETH SUSAN E , GARCIA KEVIN J , WU PETER K , GIRMAY GIRMAY K , SWANBERG MELVIN E
Abstract: A pulsed imaging Raster Output Scanner utilizes pulse width modulation in conjunction with spatial filtering to form three exposure levels at the surface of a recording medium, one of the levels associated with a specific color. In a specific non-facet tracked scanner system, a light beam (84) from a laser source (82) is modulated, by an acousto-optic modulator (92), in accordance with a video signal supplied to the modulator by a control circuit (94). An anamorphic lens system (108) performs a Fourier transform on the modulated beam which is then filtered by a spatial bandpass filter (136) before being directed, by a rotating polygon scanner (142), across the recording medium (162).
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公开(公告)号：CA1203835A
公开(公告)日：1986-04-29
申请号：CA428579
申请日：1983-05-20
Applicant: XEROX CORP
Inventor： SNELLING CHRISTOPHER , BANTON MARTIN E
IPC: H04N1/29 , G03G15/22 , H04N1/024 , H04N1/028 , H04N1/031 , H04N1/04 , H04N1/113 , G03G15/32 , G03G15/30
Abstract: A dual mode reproduction machine or copier incorporating a full width read/write bar having at least one linear array of LEDs for selectively illuminating and scanning a document original in a read mode or exposing the copier photoreceptor in a write mode. A Selfoc lens array provides a lens element for focusing each LED, the read/write bar and lens array being combined in a unitary structure mounted for selective movement between a read and write position.
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公开(公告)号：BRPI0402557A
公开(公告)日：2005-05-24
申请号：BRPI0402557
申请日：2004-06-28
Applicant: XEROX CORP
Inventor： JACOBS WILLIAM S , BANTON MARTIN E , ROBINSON DAVID C , MOORE JOHN A
Abstract: A raster image path architecture having the capacity for supporting the rendering and output of a device-independent grayscale raster image, while also offering the capacity for supporting the rendering and output of a device-dependent binary raster image, thus offering the advantages of outputting a device-independent grayscale raster image while preserving the performance and image quality advantages of a conventional binary raster image path architecture.
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公开(公告)号：CA2471386A1
公开(公告)日：2004-12-27
申请号：CA2471386
申请日：2004-06-18
Applicant: XEROX CORP
Inventor： BANTON MARTIN E , JACOBS WILLIAM S , ROBINSON DAVID C , MOORE JOHN A
Abstract: A raster image path architecture having the capacity for supporting the rendering and output of a device-independent grayscale raster image, while also offering the capacity for supporting the rendering and output of a device-dependent grayscale raster image, thus offering the advantages o f outputting a device-independent grayscale raster image while preserving the performance and image quality advantages of a conventional binary raster image path architecture.
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公开(公告)号：DE69517566D1
公开(公告)日：2000-07-27
申请号：DE69517566
申请日：1995-08-22
Applicant: XEROX CORP
Inventor： BANTON MARTIN E
IPC: B41J2/52 , G03F3/08 , G03F5/00 , G06T5/00 , H04N1/405 , H04N1/407 , H04N1/46 , H04N1/52 , H04N1/60
Abstract: The system has a printer, capable of rendering density with n density levels, adapted to print the colour separations at distinct spatial resolutions, so that when the colour separations are superposed on a substrate, a selected colour is defined. A source of image signals describe the colour document with a number of colour separations, each image signal representing optical density as one of m levels for a discrete area of a colour separation. A spatial resolution scaler is connected to the source of image signals. A halftone processor reduces the number of levels m representing optical density in a subset of the colour separations to a number of levels n representing optical density, the processor generating a first periodic pattern at a first spatial resolution. A second halftone processor reduces the number of levels m representing optical density in at least one remaining colour separation to a number of levels n representing optical density, the processor generating a second periodic pattern at a second spatial resolution. A video processor directs the distinct spatial resolution signals processed at each halftone processor to the printer to print the processed colour image.
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