GB488835A - Production of photographic colour separation records - Google Patents

Production of photographic colour separation records

Info

Publication number
GB488835A
GB488835A GB1477/38A GB147738A GB488835A GB 488835 A GB488835 A GB 488835A GB 1477/38 A GB1477/38 A GB 1477/38A GB 147738 A GB147738 A GB 147738A GB 488835 A GB488835 A GB 488835A
Authority
GB
United Kingdom
Prior art keywords
colour
cells
original
separation records
colour separation
Prior art date
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
GB1477/38A
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.)
Kodak Ltd
Original Assignee
Kodak Ltd
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.)
Filing date
Publication date
Application filed by Kodak Ltd filed Critical Kodak Ltd
Publication of GB488835A publication Critical patent/GB488835A/en
Expired legal-status Critical Current

Links

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
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • 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
    • H04N1/6016—Conversion to subtractive colour signals
    • H04N1/6022—Generating a fourth subtractive colour signal, e.g. under colour removal, black masking

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Fax Reproducing Arrangements (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Color Television Systems (AREA)
  • Recording Measured Values (AREA)
  • Color Television Image Signal Generators (AREA)

Abstract

488,835. Copying by scanning. KODAK, Ltd. Jan. 17, 1938, No. 1477. Convention date, Jan. 16, 1937. [Class 40 (iii)] A coloured original 11, Fig. 1, is scanned by light from a source 10, and the beam is split at 13, the multiple beams passing through colour filters 14R, 14G, 14B to cells 15R, 15G, 15B, which control light valves 17R, 17G, 17B recording colour separation records, i.e., monochromatic pictures 20R, 20G, 20B corresponding to the red, green and blue coloration of the original, In a modification, the beam from the original 11, Fig. 2, is split by prisms 13X, 13Z and passes through filters 14X, 14Z to record directly on the surfaces 20X, 20Z. Colour correction of the colour separation records may be obtained either by applying the currents from one cell to control the degree of amplification of currents from other cells, Figs. 3-6 (not shown), or by controlling a shutter 53, Fig. 2, in one path in accordance with the illumination in the other by means of a sensitive cell 50. Cells 56A, 56 may modify the relationship between the colour correction and the light passing through 14X.
GB1477/38A 1937-01-16 1938-01-17 Production of photographic colour separation records Expired GB488835A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US120964A US2253086A (en) 1937-01-16 1937-01-16 Color photography
US234422A US2249522A (en) 1937-01-16 1938-10-11 Electric circuit for color correction
US241433A US2231669A (en) 1937-01-16 1938-11-19 Color correction

Publications (1)

Publication Number Publication Date
GB488835A true GB488835A (en) 1938-07-14

Family

ID=27382548

Family Applications (4)

Application Number Title Priority Date Filing Date
GB1477/38A Expired GB488835A (en) 1937-01-16 1938-01-17 Production of photographic colour separation records
GB27668/39A Expired GB538013A (en) 1937-01-16 1939-10-11 Improvements in and relating to electro-optical reproduction of colour photographs
GB27667/39A Expired GB538012A (en) 1937-01-16 1939-10-11 Electro-optical systems for the transmission and reproduction of multi-coloured originals such as coloured photographs
GB8034/41A Expired GB552367A (en) 1937-01-16 1941-06-26 Improvements in electro-optical systems for the transmission and reproduction of multi-coloured originals such as coloured photographs

Family Applications After (3)

Application Number Title Priority Date Filing Date
GB27668/39A Expired GB538013A (en) 1937-01-16 1939-10-11 Improvements in and relating to electro-optical reproduction of colour photographs
GB27667/39A Expired GB538012A (en) 1937-01-16 1939-10-11 Electro-optical systems for the transmission and reproduction of multi-coloured originals such as coloured photographs
GB8034/41A Expired GB552367A (en) 1937-01-16 1941-06-26 Improvements in electro-optical systems for the transmission and reproduction of multi-coloured originals such as coloured photographs

Country Status (4)

Country Link
US (3) US2253086A (en)
DE (1) DE697490C (en)
FR (2) FR834838A (en)
GB (4) GB488835A (en)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2509038A (en) * 1942-08-21 1950-05-23 Rca Corp Television system
US2423769A (en) * 1942-08-21 1947-07-08 Rca Corp Color television system
US2434561A (en) * 1944-07-08 1948-01-13 Interchem Corp Color facsimile
US2566264A (en) * 1946-05-10 1951-08-28 Eastman Kodak Co Method of making color prints
US2521954A (en) * 1946-05-10 1950-09-12 Eastman Kodak Co Apparatus for making color prints
US2566277A (en) * 1946-05-10 1951-08-28 Eastman Kodak Co Method for making color prints
US2571697A (en) * 1946-06-20 1951-10-16 Eastman Kodak Co Method for correcting photographic color prints
US2560567A (en) * 1946-10-09 1951-07-17 Norman R Gunderson Apparatus and method for use in color reproduction
BE477743A (en) * 1946-12-05
GB640001A (en) * 1947-02-24 1950-07-12 Nell William Yelland Improvements relating to the production of multi-colour printing surfaces
US2566693A (en) * 1947-09-13 1951-09-04 Rca Corp Color television system
US2567240A (en) * 1947-10-29 1951-09-11 Miehle Printing Press & Mfg Color facsimile system
US2605348A (en) * 1948-03-10 1952-07-29 Time Inc Color separation negative
US2606245A (en) * 1948-03-10 1952-08-05 Time Inc Unsharp mask in electronic color correction
US2529975A (en) * 1948-03-11 1950-11-14 Eastman Kodak Co Method of making color prints from color transparencies
US2657254A (en) * 1950-05-20 1953-10-27 Bell Telephone Labor Inc Color television system
US2630485A (en) * 1950-09-11 1953-03-03 Color Television Inc Color television apparatus
US2691696A (en) * 1950-10-27 1954-10-12 Eastman Kodak Co Electrooptical unsharp masking in color reproduction
US2727940A (en) * 1951-06-12 1955-12-20 Time Inc Electronic masking method and apparatus
US2748190A (en) * 1951-09-15 1956-05-29 Eastman Kodak Co Black printers and electrooptical methods of making them
US2879326A (en) * 1952-08-27 1959-03-24 Eastman Kodak Co Black printer for electro-optical reproduction
US2766319A (en) * 1952-09-16 1956-10-09 Time Inc Method of and apparatus for making a black printer for four-color reproduction
US2808453A (en) * 1953-06-01 1957-10-01 Rca Corp Color correction systems
US2848528A (en) * 1953-07-30 1958-08-19 Rca Corp Color-correction system
BE530710A (en) * 1953-07-30
US2863938A (en) * 1954-06-16 1958-12-09 Technicolor Motion Picture Printing timer
CH330517A (en) * 1954-08-16 1958-06-15 Edgar Gretener Ag Dr Method of making a subtractive color film
GB791676A (en) * 1954-09-29 1958-03-12 Edgar Gretener Method for processing a subtractive motion picture film
DE1268957B (en) * 1957-09-24 1968-05-22 Hunter Penrose Ltd Device for the production of electronically corrected negative color separations
GB857654A (en) * 1958-07-18 1961-01-04 Crosfield J F Ltd Improvements in or relating to colour reproduction systems
US3274883A (en) * 1961-03-15 1966-09-27 Ibm Optical angular orientation measuring system
US3801197A (en) * 1971-04-30 1974-04-02 Canon Kk Color electrophotographic copying apparatus capable of color balance adjustment
US3763308A (en) * 1971-10-20 1973-10-02 Fuji Photo Film Co Ltd Image reproducing system
US4858507A (en) * 1983-04-20 1989-08-22 Esselte Pendaflex Corporation Mat board cutter with adjustable cutter-carrying body

Also Published As

Publication number Publication date
FR51365E (en) 1942-06-09
GB538012A (en) 1941-07-17
US2249522A (en) 1941-07-15
DE697490C (en) 1940-10-16
US2253086A (en) 1941-08-19
FR834838A (en) 1938-12-02
GB552367A (en) 1943-04-05
GB538013A (en) 1941-07-17
US2231669A (en) 1941-02-11

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