GB1372415A - Method and apparatus for classifying information bearing media for photographic reproduction - Google Patents

Method and apparatus for classifying information bearing media for photographic reproduction

Info

Publication number
GB1372415A
GB1372415A GB4011271A GB4011271A GB1372415A GB 1372415 A GB1372415 A GB 1372415A GB 4011271 A GB4011271 A GB 4011271A GB 4011271 A GB4011271 A GB 4011271A GB 1372415 A GB1372415 A GB 1372415A
Authority
GB
United Kingdom
Prior art keywords
original
disc
density
aligned
cells
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
GB4011271A
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB1372415A publication Critical patent/GB1372415A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
    • G03B27/73—Controlling exposure by variation of spectral composition, e.g. multicolor printers

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Exposure In Printing And Copying (AREA)

Abstract

1372415 Classifying photographic originals EASTMAN KODAK CO 26 Aug 1971 [27 Aug 1970] 40112/71 Heading G2A Originals to be photographically reproduced are classified by measuring the extreme density portion of the central portion 14 of the original and the average density of an upper 12a and a lower 12b peripheral portion of the original. In one embodiment, Fig.1, the original is imaged on to an array of photo-cells which includes a plurality of cells 15 occupying the subject portion which are connected to an auctioneering circuit as described in Specification 1229677. In a second embodiment, Fig.2, a disc 210 is rotated over a projected film gate 216 to obtain the density measurements. Light sources with co-operating photo-cells are positioned at 90‹, 132‹ 53', 171‹ 30', and 200‹ 30' to form control gates. The disc has ten notches 217a-217k and associated apertures 213a-213k each located at different distances from the centre of the disc. As the disc rotates, notches 217a-217k are aligned in turn with the light source at 90‹, and apertures 213a- 213k effect scanning over the subject portion of the original. In addition, an aperture 215 is aligned in turn with the other light sources when U-shaped apertures 211, 212 are positioned over film gate 216 to measure the density of peripheral regions, and when an aperture 214 is aligned with a projected reference 218.
GB4011271A 1970-08-27 1971-08-26 Method and apparatus for classifying information bearing media for photographic reproduction Expired GB1372415A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6733170A 1970-08-27 1970-08-27

Publications (1)

Publication Number Publication Date
GB1372415A true GB1372415A (en) 1974-10-30

Family

ID=22075291

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4011271A Expired GB1372415A (en) 1970-08-27 1971-08-26 Method and apparatus for classifying information bearing media for photographic reproduction

Country Status (5)

Country Link
CA (1) CA931408A (en)
CH (2) CH566021A5 (en)
DE (1) DE2143023C3 (en)
FR (1) FR2108207B1 (en)
GB (1) GB1372415A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5832338B2 (en) * 1975-06-21 1983-07-12 コニカ株式会社 Scanning color densitometer
JPS5223936A (en) * 1975-08-19 1977-02-23 Fuji Photo Film Co Ltd Exposure control process for photography printing
FR3125755A1 (en) 2021-07-28 2023-02-03 Psa Automobiles Sa Dashboard trim element with means for guiding a cable.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1497900A1 (en) * 1951-01-28 1969-07-03 Agfa Gevaert Ag Procedure for exposure control when copying color originals
US3232192A (en) * 1963-02-20 1966-02-01 Eastman Kodak Co Photographic exposure measuring device
DE1522892A1 (en) * 1966-03-29 1969-10-16 Salvatore Lombardo System and device for automatically determining the correct exposure of a light-sensitive material
CH463275A (en) * 1966-09-22 1968-09-30 Ciba Geigy Method and device for automatic exposure control in photographic copiers
CH464691A (en) * 1967-05-22 1968-10-31 Eastman Kodak Co Exposure classification apparatus

Also Published As

Publication number Publication date
CA931408A (en) 1973-08-07
DE2143023B2 (en) 1980-05-22
CH557550A (en) 1974-12-31
DE2143023A1 (en) 1972-03-02
FR2108207A1 (en) 1972-05-19
CH566021A5 (en) 1975-08-29
FR2108207B1 (en) 1977-01-21
DE2143023C3 (en) 1983-12-01

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee