公开(公告)号：CA2345908A1

公开(公告)日：2001-11-05

申请号：CA2345908

申请日：2001-05-02

Applicant: XEROX CORP

Inventor： MALTZ MARTIN S ,  WANG YAO RONG ,  ROLLESTON ROBERT J ,  BALASUBRAMANIAN THYAGARAJAN ,  JACKSON ERIC ,  CREAN PETER A ,  MESTHA LINGAPPA K

IPC: B41J29/46 ,  B41J2/525 ,  G03G15/00 ,  G03G15/01 ,  G06T1/00 ,  H04N1/407 ,  H04N1/46 ,  H04N1/60 ,  G06K15/02 ,  G01J3/46 ,  G06F3/14 ,  G06F13/10 ,  G06T7/40

Abstract: A color marking device including a control system for calibration of the device based upon dynamic color balance control of an output image. The system comprises a front end converter for converting an input signal representativ e of a target image comprising a preselected color into a device-dependent control signal in accordance with a device TRC, a color marking device for outputting an outpu t image in response to the control signal, a sensor for measuring a parameter from t he output image representative of a color of the output image, and, a point-wise controller for comparing the parameter with a corresponding parameter from the target image and constructing adjusted controlled points for the device TRC when the measured parameter and the corresponding parameter vary by a preselected value, a col or balance controller for constructing an adjusted device TRC from the controll ed points, whereby subsequently generated output images are output with the adjusted device TRC and, more accurately represent target input images.

公开(公告)号：CA2073398A1

公开(公告)日：1993-03-07

申请号：CA2073398

申请日：1992-07-08

Applicant: XEROX CORP

Inventor： KOVNAT LARRY A ,  LONG KAREN M ,  JUMP BARRY L ,  CHIANG JOSEPH ,  HUNTER TIMOTHY M ,  ZANGHI JOHN L ,  CREAN PETER A ,  KWIATKOWSKI DAVID ,  SMITH BRADLEY ,  TA LUONG ,  UNKE STEVE ,  VAN DELLON MARK

IPC: B41J5/30 ,  B41J29/38 ,  H04N1/00 ,  H04N1/32 ,  H04N1/21 ,  H04N1/23

Abstract: An image output terminal in a printer includes a control board providing an interface between an electronic subsystem of the printer and a printing unit of the image output terminal. An image disk can be provided in the image output terminal for receipt of image data from the electronic subsystem prior to submission to the printing unit. The control board further provides an interface between the electronic subsystem and the image disk and between the image disk and the printing unit such that communication is decoupled between the electronic subsystem and the printing unit as data is printed while the transfer of data from the electronic subsystem to the image disk is allowed during printing. The control board controls all communication between the electronic subsystem and the printing unit. The control board is able to detect fault conditions in the electronic subsystem, printing unit and control board itself.

公开(公告)号：CA1147382A

公开(公告)日：1983-05-31

申请号：CA391476

申请日：1981-12-03

Applicant: XEROX CORP

Inventor： CREAN PETER A ,  LAVALLEE PIERRE A

IPC: G03G15/00

Abstract: SCANNING ARRAY CONFIGURATION A line scanning apparatus employing a multiplicity of linear arrays, the linear extent of which is less than the length of the scan line. To permit an entire line to be covered, the arrays are offset from one another in the direction of scan with adjoining array ends overlapped. To correct for the misalignment and redundancy introduced, the image data from the arrays is buffered until a line is completed when readout, is initiated. During readout, cross over from one array to the next is effected within the overlapped areas and the redundant data discarded.

公开(公告)号：CA1131347A

公开(公告)日：1982-09-07

申请号：CA301764

申请日：1978-04-24

Applicant: XEROX CORP

Inventor： CREAN PETER A ,  LAVALLEE PIERRE A ,  AGULNEK MARTIN A

IPC: H04N1/10 ,  H04N1/195 ,  H04N1/04

Abstract: SCANNING APPARATUS A line scanning apparatus employing a multiplicity of linear arrays, the linear extent of which is less than the length of the scan line. To permit an entire line to be covered, the arrays are offset from one another in the direction of scan with adjoining array ends overlapped. To correct for the misalignment and redundancy introduced, the image data from the arrays is buffered until a line is completed when readout, is initiated. During readout, cross over from one array to the next is effected within the overlapped areas and the redundant data discarded.

公开(公告)号：DE69940009D1

公开(公告)日：2009-01-15

申请号：DE69940009

申请日：1999-11-29

Applicant: XEROX CORP

Inventor： HOLLADAY THOMAS M ,  BUCKLEY ROBERT R ,  KLASSEN R VICTOR ,  ZECK NORMAN W ,  CREAN PETER A

IPC: H04N1/64 ,  G06T5/00 ,  H04N1/41

公开(公告)号：DE60135178D1

公开(公告)日：2008-09-18

申请号：DE60135178

申请日：2001-05-03

Applicant: XEROX CORP

Inventor： MESTHA LINGAPPA K ,  CREAN PETER A ,  MALTZ MARTIN S ,  ROLLESTON ROBERT J ,  WANG YAO RONG ,  JACKSON ERIC ,  BALASUBRAMANIAN RAJA

IPC: B41J29/46 ,  H04N1/60 ,  B41J2/525 ,  G03G15/00 ,  G03G15/01 ,  G06T1/00 ,  H04N1/407 ,  H04N1/46

公开(公告)号：CA2490192A1

公开(公告)日：2005-06-22

申请号：CA2490192

申请日：2004-12-15

Applicant: XEROX CORP

Inventor： RUMPH DAVID E ,  FARRELL MICHAEL E ,  CREAN PETER A ,  SMITH MARK A ,  ROBSON THOMAS ,  THIBODEAU ERIC J ,  FLEYSHER DANIEL ,  JACOBS WILLIAM S ,  SALFITY MUNIR G ,  LYONS ROBERT E

IPC: B41J5/30 ,  G06F3/12 ,  G06K15/02 ,  H04N1/00 ,  H04N1/387

Abstract: The invention generates a page description language compliant data strea m, that has been pre-designed and pre-processed to create unique and predictabl e page element ordering, overlay and layout, and for splitting large page elements into multiple independent elements. In this way, multiple processors can be used to render the document without merging the data stream.

公开(公告)号：BRPI0401841A

公开(公告)日：2005-02-09

申请号：BRPI0401841

申请日：2004-05-27

Applicant: XEROX CORP

Inventor： DALAL EDUL N ,  RASMUSSEN D RENE ,  CREAN PETER A

IPC: G03G15/00 ,  G03G13/08 ,  G03G15/06 ,  G03G15/08

Abstract: A toner control process, which includes substantially determining how reload error will affect a printed image, modulating the color density of a test patch to compensate for reload error prior to printing the test patch, printing the modulated test patch, sensing the digital image, adjusting toner output according to the sensed digital image.

公开(公告)号：BR0101793A

公开(公告)日：2001-12-18

申请号：BR0101793

申请日：2001-05-07

Applicant: XEROX CORP

Inventor： MESTHA LINGAPPA K ,  CREAN PETER A ,  MALTZ MARTIN S ,  ROLLESTON ROBERT J ,  WANG YAO RONG ,  JACKSON ERIC ,  BALASUBRAMANIAN RAJAN THYAGA

IPC: B41J29/46 ,  B41J2/525 ,  G03G15/00 ,  G03G15/01 ,  G06T1/00 ,  H04N1/407 ,  H04N1/46 ,  H04N1/60 ,  G05D25/00

公开(公告)号：CA1199522A

公开(公告)日：1986-01-21

申请号：CA407889

申请日：1982-07-23

Applicant: XEROX CORP

Inventor： CREAN PETER A ,  SCHNEIDER JOHN M ,  LIPANI ANTHONY F

IPC: B41J2/075 ,  B41J2/01 ,  B41J2/12 ,  G01D18/00

Abstract: An improved ink jet marking architecture for enhancing ink droplet placing accuracy. The improved architecture combines a bipolar scanning arrangement with a drop interlace scheme. The preferred marking apparatus comprises an array of ink jet column generators which direct ink droplets to first a charging region and then through a deflection region. The droplets are charged either negatively or positively depending an a desired droplet trajectory; thus the bipolar designation. The deflection region has an electric field strength slightly less than the breakdown field strength of air for the environment in which the apparatus is to operate. The high field strength reduces the charge which must be applied to the droplets and therefore minimizes the drop to drop coulomb interaction. The interlace strategy causes sequential drops from a given generator to be printed in non-sequential locations on the paper. This strategy spreads out the ink droplets in space and results in a reduction of both aerodynamic and coulombic interaction between droplets. By reducing these interactions and minimizing the time of flight for the drops the placement accuracy is increased. The placement accuracy is further enhanced by utilizing a charging scheme which takes into account the charge induced on other droplets in close proximity of the droplet to correct for coulomb interactions even the bipolar plus interlace strategy cannot avoid.