公开(公告)号：JP2000155510A

公开(公告)日：2000-06-06

申请号：JP14266599

申请日：1999-05-24

Applicant: XEROX CORP

Inventor： MESTHA LINGAPPA K

IPC: G03G21/00 ,  G03G15/00 ,  H04N1/00 ,  H04N1/29

Abstract: PROBLEM TO BE SOLVED: To provide a system and a method for controlling an electro- photographic image formed by an electro-photographic image forming system. SOLUTION: This quality control method includes a step (S1) for collecting sensor data from at least one sensor while at least one sensor can operate, a step (S2) for deciding that the quality control sensors are malfunctioning, a step (S3) for generating a control input signal based on the collected sensor data when it is decided that the quality control sensors are malfunctioning, and step (S4) for supplying the control input signal to the electro-photographic system.

公开(公告)号：JPH11119616A

公开(公告)日：1999-04-30

申请号：JP19996798

申请日：1998-07-15

Applicant: XEROX CORP

Inventor： FOLKINS JEFFREY J ,  SHAHIN MICHAEL M ,  SMITH CRAIG A ,  PARISI MICHAEL A ,  MESTHA LINGAPPA K

IPC: B41M3/14 ,  G03G21/04 ,  H04N1/00

Abstract: PROBLEM TO BE SOLVED: To reduce or eliminate the possibility of duplicating originals of secret or guaranteed documents by a copy, an electrically processing method, etc., using a photograph or an electronic device. SOLUTION: In this method a facility is provided which has an electronic printer equipped with at least a kind of access controlling mechanism, and original documents are printed by the access-controlled electronic printer so that an image printed by it is produced at least from marking materials containing at least a kind of a photoactive additive, and a reproducing device of all the access non-controls is installed in the facility provided with an illuminating light source for secrecy with which an intended secret or guaranteed documents are irradiated with an intensity enough to activate the photoactive additive. Moreover, the facility has such a configuration that the intended secret or the guaranteed documents are irradiated with the illuminating light source of the access non-control reproducing device, and a printed image of the original document can not be copied or scanned at ordinary copying or scanning illumination intervals.

公开(公告)号：JP2001194856A

公开(公告)日：2001-07-19

申请号：JP2000349813

申请日：2000-11-16

Applicant: XEROX CORP

Inventor： MESTHA LINGAPPA K

IPC: B41J29/46 ,  G01J3/02 ,  G01J3/28 ,  G01J3/50 ,  G01J3/52 ,  G03G15/00 ,  G03G15/01

Abstract: PROBLEM TO BE SOLVED: To provide a color measuring system on line capable of performing automatic calibration. SOLUTION: This spectrophotometer 12 measures a color printed on a color test patch 31 on a printed test sheet 30 moving in the vicinity when the test patch 31 is irradiated by plural different color irradiating sources in order. The irradiated color is reflected on the test patch 31 and detected by a photosensor D12. Recalibration is performed by providing respective calibration signals at some intervals from the respective electric output signals of the photosensor when the printed color sheet does not exist in an output path between the spectrophotometer and the still calibration test patch by irradiating the still calibration test patch installed on the opposite side to the spectrophotometer 12 of the output path by the irradiating sources put in order during the time agreeing with an adjacent gap between the printed sheets moving in the output path.

公开(公告)号：JPH10181104A

公开(公告)日：1998-07-07

申请号：JP31857097

申请日：1997-11-19

Applicant: XEROX CORP

Inventor： MESTHA LINGAPPA K ,  WANG YAO RONG ,  DIANAT SOHAIL A ,  KHARGONEKAR PRAMOD P ,  KODITSCHEK DANIEL E ,  JACKSON ERIC ,  THIERET TRACY E

IPC: B41J2/52 ,  G03G15/00 ,  G06T1/00 ,  G06T5/00 ,  G06T7/00

Abstract: PROBLEM TO BE SOLVED: To obtain a new improved technique for process control by connecting a specified expected tone reproduction curve with a tone reproduction sample to reconstitute a tone reproduction curve and by controlling a machine operation in response to the tone reproduction curve reconstituted. SOLUTION: In a image forming system having a control device comprising a set of actuator for projecting a printed image on a printed image forming surface, a image forming system is modeled with regard to an actuator for forming an expected tone reproduction curve. The expected tone reproduction curve is defined by a formula and an optional tone reproduction sample is obtained. The expected tone reproduction curve is connected with the tone reproduction sample to reconstitute a tone reproduction curve and a machine operation is controlled in response to the tone reproduction curve reconstituted. Here, in the formula, C is TRC measured, C▵ is TRC forecasted and C-is TRC reconstituted.

公开(公告)号：JP2002033935A

公开(公告)日：2002-01-31

申请号：JP2001128200

申请日：2001-04-25

Applicant: XEROX CORP

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

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

Abstract: PROBLEM TO BE SOLVED: To simply calibrate the color adjustment of an output image in a color-marking apparatus. SOLUTION: A target image which is composed of a preselection color, which is selected in advance, is converted into a control signal by a front-end converter 14 according to the color reproduction curve of the color marking apparatus 10. The apparatus 10 performs marking operation of the output image by the control signal, and a parameter which indicates the color of the image is measured by a sensor 12, on the basis of the image. According to the parameter, a point control-type controller 26 creates a control point for tone reproduction curve adjustment. A color balance controller 24 creates a color reproduction curve of the apparatus, on the basis of the control point.

公开(公告)号：JP2001320597A

公开(公告)日：2001-11-16

申请号：JP2001010930

申请日：2001-01-19

Applicant: XEROX CORP

Inventor： MESTHA LINGAPPA K ,  DIANAT SOHAIL A

IPC: G06T1/00 ,  G01J3/46 ,  H04N1/46 ,  H04N1/60

Abstract: PROBLEM TO BE SOLVED: To enhance spectral color matching independently of a device and lighting by using feedback and real time sensing of a spectrophotometer. SOLUTION: A color output spectrally matching is obtained by using data from a real time sensor such as a spectrophotometer on an output tray of a marking unit, for example, to decide an output spectrum of a copied image. An output spectrum of the copied image is compared with that of a target spectrum stored in a memory of a computer in order to generate a mapping table spectrally matching all succeeding color image copies in real time. Thus, the spectrum of an output color matchces between a display and a print, a scanning and a print, a scanning and a display or a copy and a print.

公开(公告)号：JP2001243040A

公开(公告)日：2001-09-07

申请号：JP2000381632

申请日：2000-12-15

Applicant: XEROX CORP

Inventor： MESTHA LINGAPPA K ,  FRED F HUBBLE III ,  FURST MICHAEL R

IPC: B41J29/46 ,  B41J2/525 ,  G03G15/01 ,  G03G21/00 ,  G06F3/12 ,  G06T1/00 ,  H04N1/46 ,  H04N1/60

Abstract: PROBLEM TO BE SOLVED: To improve the coherence of the appearance of a color original among plural color image forming devices or color display monitors connected on a distributed network by offering a service with color coherence by a color adjusting server and method independent of any device. SOLUTION: In a color adjusting system equipped with a device independent color adjusting server which can be connected to a network and at least one color image forming device which can be connected to a network, each color image forming device includes a color correcting system, and each color image forming device includes color sensors arranged so that the color quality of an output image formed by the color image forming device can be measured.

公开(公告)号：JP2002268864A

公开(公告)日：2002-09-20

申请号：JP2001363969

申请日：2001-11-29

Applicant: XEROX CORP

Inventor： BARES JAN ,  MICHAEL R FAST ,  MESTHA LINGAPPA K ,  HARRINGTON STEVEN J ,  JACKSON ERIC

IPC: B41J29/38 ,  B41J5/30 ,  B41J21/00 ,  B41J29/40 ,  G06F3/12 ,  G06K1/12 ,  G06T11/00 ,  H04N1/46

Abstract: PROBLEM TO BE SOLVED: To suitably control desired color tagging, tracking and insurance by a user interface that is simple and easy to use. SOLUTION: This printing system accurately prints proprietary marks and selected colors. A dictionary of recognizable patterns and defined colors corresponding to the proprietary marks and selected colors is linked to a user interface. Here, a user may designate a location within a document and at least one of a plurality of proprietary marks with defined colors from an accessible menu. A processor associates the defined colors with the image at the specified location and generates a printer signal representing them. Alternatively, the processor includes a pattern recognizer for identifying recognizable patterns within a document. The patterns have a likeness to defined patterns within a pattern dictionary and can be converted to the defined patterns for display or imaging.

公开(公告)号：JP2001209788A

公开(公告)日：2001-08-03

申请号：JP2000359180

申请日：2000-11-27

Applicant: XEROX CORP

Inventor： MESTHA LINGAPPA K ,  RAMIREZ OLGA Y

IPC: B41J2/525 ,  G06T1/00 ,  G06T11/60 ,  H04N1/46 ,  H04N1/60

Abstract: PROBLEM TO BE SOLVED: To predict the analytical model of a dynamically fluctuating color reproducing device online. SOLUTION: A method and a device which predict the analytical model of the dynamically fluctuating color reproducing device online, repeatedly perform parameter adjustment algorithm and update a parameter until the analytical model is obtained. Parameter adjustment is calculated on the basis of a signal detected from an actual device output by a sensor itself and a measured error signal from an analytical model output. The convergence of parameters offers minimum error measurement, and the adjustment algorithm is repeatedly carried out until the updated parameter is discriminated as correct in a selected parametric model.

公开(公告)号：JP2001001613A

公开(公告)日：2001-01-09

申请号：JP2000011002

申请日：2000-01-19

Applicant: XEROX CORP

Inventor： DUKE CHARLES B ,  MESTHA LINGAPPA K ,  BANTON MARTIN E ,  THIERET TRACY E ,  SOLCZ EDWARD J

IPC: B41J29/38 ,  B41J29/46 ,  G06F3/12 ,  H04N1/60

Abstract: PROBLEM TO BE SOLVED: To obtain a method and apparatus for generating predictable, reproducible and pleasing images in a distributed digital image processing system. SOLUTION: A distributed digital image processing system comprises an image originating device 100 on which an image is assembled, a processing device 200-500 linked to the image originating device 100 that processes and transmits a representation of the image, an output device 600-800 linked to the processing device 200-500 that outputs the image as a presentation image, and a measuring device 900 linked to the output device 600-800, the image originating device 100 and at least one of the processing devices 200-500, wherein the properties detected by the measuring device 900 are fed back to at least one of the image originating device 100, the processing devices 200-500 and the output device 600-800.