GB1294536A – Self-adaptive system for the reproduction of color
– Google Patents
GB1294536A – Self-adaptive system for the reproduction of color
– Google Patents
Self-adaptive system for the reproduction of color
Info
Publication number
GB1294536A
GB1294536A
GB09666/70A
GB1966670A
GB1294536A
GB 1294536 A
GB1294536 A
GB 1294536A
GB 09666/70 A
GB09666/70 A
GB 09666/70A
GB 1966670 A
GB1966670 A
GB 1966670A
GB 1294536 A
GB1294536 A
GB 1294536A
Authority
GB
United Kingdom
Prior art keywords
colour
plates
scanned
black
green
Prior art date
1969-04-23
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB09666/70A
Inventor
N I Korman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ventures Res & Dev
Original Assignee
Ventures Res & Dev
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1969-04-23
Filing date
1970-04-23
Publication date
1972-11-01
1970-04-23
Application filed by Ventures Res & Dev
filed
Critical
Ventures Res & Dev
1972-11-01
Publication of GB1294536A
publication
Critical
patent/GB1294536A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
H04N1/024—Details of scanning heads ; Means for illuminating the original
H04N1/032—Details of scanning heads ; Means for illuminating the original for picture information reproduction
H04N1/0323—Heads moving to and away from the reproducing medium, e.g. for pressure sensitive reproducing
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
H04N1/46—Colour picture communication systems
H04N1/56—Processing of colour picture signals
H04N1/60—Colour correction or control
H04N1/603—Colour correction or control controlled by characteristics of the picture signal generator or the picture reproducer
H04N1/6033—Colour correction or control controlled by characteristics of the picture signal generator or the picture reproducer using test pattern analysis
Abstract
1294536 Facsimile colour printer VENTURES RESEARCH. & DEVELOPMENT GROUP 23 Apri11970 [23 April 1969] 19666/70 Heading H4F [Also in Division B6] In a facsimile half-tone colour printer in which an original is mounted on a rotating mandrel and photo-electrically scanned to produce red, green and blue video signals and in response thereto colour separations for yellow, cyan, magenta and preferably also black are formed on three or four plates sequentially or simultaneously, the plates comprising the actual printing plates or photographic plates from which printing plates are formed, the red, green and blue video signals are transformed into the colour separation printing plate signals by means of a digital computer whose memory contains the conversion co-efficients which ensure that the original is reproduced by the printing plates with excellent colour fidelity. The computer memory is loaded by initially generating a large number (e.g. 500) of arbitrarily selected (but evenly spaced in colour space) sets of colours, each set comprising values representing the proportion of the cyan, magenta, yellow and black inks included therein. A set of plates is then produced to print these sets of colours, each plate laying down one of the coloured inks upon a paper to produce a matrix of colour patches. This printed matrix is then photo-electrically scanned in the same manner as the original to be reproduced is scanned so that for each cyan, magenta yellow, black colour set the photo-electrically measured proportions i.e. colour values, of red, green and blue are derived. From this information the co-efficients are calculated for a predetermined set of colour conversion equations which facilitate conversion of any set of measured colour values into the corresponding amounts of colour inks to reproduce that colour; and these sets of co-efficients are stored in preselected locations of the computer memory. Each block 61, Figs. 9 and 9a, of the printed matrix contains two black patches 62, 63 and one coloured patch 64. The black patches enable the individual colour patches to be unambiguously detected when the matrix is being scanned on the rotating mandrel, each colour patch being scanned in practice about 64 times and the average values of the red, green and blue colour signals used as above. The printing plates may each be formed by engraving a resilient plastic or rubber plate or a metallic plate (see Division B6), or by engraving an opaque coating on a transparent plate, the final printing plate being prepared by conventional photographic techniques, or by exposing light sensitive plates to a light beam, e.g. from a CRT, which is modulated in intensity, time duration and/or beam width, the final printing plate being again prepared by conventional photographic techniques. To reduce moire effects the grid-type dot patterns for the different colours are arranged to-be at various angles to each other, or alternatively the dots are randomly spaced by introducing a random delay in the computer programme which results in random spacing of the dots in the direction of drum rotation. In addition the drive of the drum may be varied to alter the dot spacing along the axis of the’drum. When a CRT is used the light spot may be randomly deflected. Various diameter cylinders may be used to accommodate a variety of picture sizes.
GB09666/70A
1969-04-23
1970-04-23
Self-adaptive system for the reproduction of color
Expired
GB1294536A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US81848969A
1969-04-23
1969-04-23
Publications (1)
Publication Number
Publication Date
GB1294536A
true
GB1294536A
(en)
1972-11-01
Family
ID=25225660
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB09666/70A
Expired
GB1294536A
(en)
1969-04-23
1970-04-23
Self-adaptive system for the reproduction of color
Country Status (6)
Country
Link
US
(1)
US3612753A
(en)
CH
(1)
CH542463A
(en)
DE
(1)
DE2018317C3
(en)
FR
(1)
FR2046431A5
(en)
GB
(1)
GB1294536A
(en)
SE
(1)
SE376735B
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2139449A
(en)
*
1983-03-05
1984-11-07
Canon Kk
Colour Image Processor
Families Citing this family (66)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3893166A
(en)
*
1972-01-05
1975-07-01
Crosfield Electronics Ltd
Colour correcting image reproducing methods and apparatus
GB1511236A
(en)
*
1974-07-01
1978-05-17
Crosfield Electronics Ltd
Reproducing methods and apparatus
GB1369702A
(en)
*
1972-01-05
1974-10-09
Crosfield Electronics Ltd
Image reproducing methods and apparatus
GB1379053A
(en)
*
1972-04-28
1975-01-02
Crosfield Electronics Ltd
Colour scanners for image reproduction
US4017894A
(en)
*
1973-10-01
1977-04-12
Agency Of Industrial Science & Technology
Method for preparing color separation printing patterns
JPS5224701A
(en)
*
1975-08-20
1977-02-24
Dainippon Screen Mfg
Method of correcting color of image signal
JPS6035661B2
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*
1975-09-12
1985-08-15
大日本スクリーン製造株式会社
Color correction method
DE2810225C2
(en)
*
1978-03-09
1982-04-22
Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel
Acquisition and utilization of color correction data for color image recording
JPS5579448A
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*
1978-12-11
1980-06-14
Dainippon Screen Mfg Co Ltd
Color separation simulation system
JPS55142345A
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*
1979-04-23
1980-11-06
Dainippon Screen Mfg Co Ltd
Masking operation method in digital color tone control
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*
1979-04-23
1983-06-15
Dainippon Screen Mfg
Digital color control method and machine
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1979-12-21
1981-07-17
Dainippon Screen Mfg Co Ltd
Forming method of memory table
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1979-12-28
1981-07-30
Dainippon Screen Mfg Co Ltd
Color separation simulation device
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*
1980-01-21
1981-08-17
Dainippon Screen Mfg Co Ltd
Metho for pretreating image signal of image copying apparatus
DE3232577A1
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*
1981-09-12
1983-03-31
Dainippon Screen Manufacturing Co., Ltd., Kyoto
METHOD AND DEVICE FOR MEASURING COLOR CONCENTRATION IN PRINTED PRODUCTS
US4500919A
(en)
*
1982-05-04
1985-02-19
Massachusetts Institute Of Technology
Color reproduction system
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(en)
*
1982-06-28
1984-11-06
R. R. Donnelley & Sons Company
Method of determining and storing color printing information
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*
1983-03-08
1988-06-21
Canon Kabushiki Kaisha
Color halftone image processing apparatus producing various screen angles and having an adaptive color image data conversion look-up table and a small-capacity masking memory
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(en)
*
1983-05-10
1984-11-22
Toppan Printing Co Ltd
Device for inputting dot area per cent
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(en)
*
1984-08-24
1984-09-26
Crosfield Electronics Ltd
Image enhancement
US4839721A
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*
1984-08-28
1989-06-13
Polaroid Corporation
Method of and apparatus for transforming color image data on the basis of an isotropic and uniform colorimetric space
US4970584A
(en)
*
1985-05-15
1990-11-13
Ricoh Company, Ltd.
Method and apparatus for the compensation of color detection
DE3787611T2
(en)
*
1986-10-29
1994-03-24
Canon Kk
Color image reader or color image forming device.
EP0273398B1
(en)
*
1986-12-25
1995-02-08
Konica Corporation
Method of correcting color images
US4839722A
(en)
*
1987-10-30
1989-06-13
Colorocs Corporation
Method and apparatus for providing improved color correction in a subtrative color printing system
US5155588A
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*
1990-02-06
1992-10-13
Levien Raphael L
Color correction and apparatus for photographic reproduction
US5245443A
(en)
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1990-10-02
1993-09-14
Southwest Software, Inc.
Method and apparatus for calibrating image output from an image generating device
CA2055058C
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*
1990-12-31
1996-08-06
Anthony Joseph Dattilo
Automatic correction for color printing
US5841955A
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*
1991-12-02
1998-11-24
Goss Graphic Systems, Inc.
Control system for a printing press
US5258810A
(en)
*
1991-12-13
1993-11-02
Minnesota Mining And Manufacturing Company
Method for calibrating an electrophotographic proofing system
US5262825A
(en)
*
1991-12-13
1993-11-16
Minnesota Mining And Manufacturing Company
Density process control for an electrophotographic proofing system
US5671063A
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1993-02-25
1997-09-23
Ohio Electronic Engravers, Inc.
Error tolerant method and system for measuring features of engraved areas
US5831746A
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1993-02-25
1998-11-03
Ohio Electronic Engravers, Inc.
Engraved area volume measurement system and method using pixel data
US5440398A
(en)
*
1993-02-25
1995-08-08
Ohio Electronic Engravers, Inc.
Error detection apparatus and method for use with engravers
US5691818A
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1993-02-25
1997-11-25
Ohio Electronic Engravers, Inc.
System and method for enhancing edges and the like for engraving
US5617217A
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1993-02-25
1997-04-01
Ohio Electronic Engravers, Inc.
Engraving method and apparatus for generating engraving drive signals for engraving engraved areas of accurately controlled size in the surface of a workpiece using coefficient values and associated set up parameter values
US6362899B1
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1993-02-25
2002-03-26
Mdc Max Daetwyler Ag
Error detection apparatus and method for use with engravers
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1993-02-25
1995-08-01
Ohio Electronic Engravers, Inc.
Error detection apparatus and method for use with engravers
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1993-02-25
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Ohio Electronic Engravers, Inc.
Engraving method and apparatus for engraving areas using a shaping signal
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1993-02-25
1998-04-07
Ohio Electronic Engravers, Inc.
System and method for focusing, imaging and measuring areas on a workpiece engraved by an engraver
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1993-02-25
1995-06-13
Ohio Electronic Engravers, Inc.
Apparatus and method for engraving a gravure printing cylinder
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Ohio Electronic Engravers, Inc.
Method and apparatus for positioning at least one engraving head
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1993-02-25
1998-10-20
Ohio Electronic Engravers, Inc.
Engraving apparatus and method for adjusting a worn stylus using a midtone correction
US5677967A
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*
1993-03-10
1997-10-14
R. R. Donnelley & Sons Company
Method of and apparatus for converting between a color appearance space and a colorant space
US6025921A
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1995-01-23
2000-02-15
Ohio Electronics Engravers, Inc.
Method and apparatus for engraving a mixed pattern
US5675420A
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1995-01-23
1997-10-07
Ohio Electronic Engravers, Inc.
Intaglio engraving method and apparatus
US5812705A
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1995-02-28
1998-09-22
Goss Graphic Systems, Inc.
Device for automatically aligning a production copy image with a reference copy image in a printing press control system
US5781206A
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*
1995-05-01
1998-07-14
Minnesota Mining And Manufacturing Company
Apparatus and method for recalibrating a multi-color imaging system
US5767980A
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*
1995-06-20
1998-06-16
Goss Graphic Systems, Inc.
Video based color sensing device for a printing press control system
US5805280A
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*
1995-09-28
1998-09-08
Goss Graphic Systems, Inc.
Control system for a printing press
EP0765748A3
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*
1995-09-29
1997-08-13
Goss Graphics Systems Inc
Device for alignment of images in a control system for a printing press
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1995-10-05
1999-05-11
Goss Graphic Systems, Inc.
Ink separation device for printing press ink feed control
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1996-06-19
1999-09-14
Sienna Imaging, Inc.
System and method for filtering output of a cathode ray tube
US6278533B1
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1996-11-29
2001-08-21
Fuji Photo Film Co., Ltd.
Method of processing image signal
JPH10191081A
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*
1996-12-26
1998-07-21
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Color conversion method
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1997-07-03
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Minnesota Mining And Manufacturing Company
Arrangement for mapping colors between imaging systems and method therefor
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1997-06-27
2008-06-03
Eastman Kodak Company
Arrangement for mapping colors between imaging systems and method thereof
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1997-06-27
2000-08-22
Minnesota Mining And Manufacturing Company
Characterization of color imaging systems
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Arrangement for mapping colors between imaging systems and method therefor
US6433890B1
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1998-09-24
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Mdc Max Daetwyler Ag
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1999-03-01
2006-04-18
Eastman Kodak Company
Color processing
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†
1999-09-06
2005-06-01
Komori Corporation
COLOR MANAGEMENT PROCEDURE AND DEVICE IN A PRINTING MACHINE.
US6667758B2
(en)
*
2001-09-04
2003-12-23
Eastman Kodak Company
Image processing apparatus and method for simultaneously scanning and proofing
CN1857923A
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*
2006-06-06
2006-11-08
赛勒斯·沙纳德
Four color dyeing and printing process
US8760462B2
(en)
2010-05-06
2014-06-24
Columbia Insurance Company
Color management method for color representation with self-luminous color primaries
US9211722B2
(en)
*
2011-11-25
2015-12-15
Canon Kabushiki Kaisha
Recording apparatus
1969
1969-04-23
US
US818489A
patent/US3612753A/en
not_active
Expired – Lifetime
1970
1970-04-03
SE
SE7004596A
patent/SE376735B/xx
unknown
1970-04-16
DE
DE2018317A
patent/DE2018317C3/en
not_active
Expired
1970-04-23
FR
FR7014859A
patent/FR2046431A5/fr
not_active
Expired
1970-04-23
CH
CH611270A
patent/CH542463A/en
not_active
IP Right Cessation
1970-04-23
GB
GB09666/70A
patent/GB1294536A/en
not_active
Expired
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2139449A
(en)
*
1983-03-05
1984-11-07
Canon Kk
Colour Image Processor
US5126839A
(en)
*
1983-03-05
1992-06-30
Canon Kabushiki Kaisha
Color image processing apparatus
Also Published As
Publication number
Publication date
SE376735B
(en)
1975-06-09
DE2018317A1
(en)
1970-11-19
US3612753A
(en)
1971-10-12
CH542463A
(en)
1973-09-30
DE2018317B2
(en)
1980-01-24
FR2046431A5
(en)
1971-03-05
DE2018317C3
(en)
1980-10-09
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Legal Events
Date
Code
Title
Description
1973-03-14
PS
Patent sealed [section 19, patents act 1949]
1983-12-14
PCNP
Patent ceased through non-payment of renewal fee
