AT303524B - Device for controlling the exposure for photographic copying machines - Google Patents

Device for controlling the exposure for photographic copying machines

Info

Publication number
AT303524B
AT303524B AT1103769A AT1103769A AT303524B AT 303524 B AT303524 B AT 303524B AT 1103769 A AT1103769 A AT 1103769A AT 1103769 A AT1103769 A AT 1103769A AT 303524 B AT303524 B AT 303524B
Authority
AT
Austria
Prior art keywords
exposure
controlling
copying machines
photographic copying
photographic
Prior art date
Application number
AT1103769A
Other languages
German (de)
Inventor
James Frederick Wilson
Original Assignee
Bell & Howell 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 Bell & Howell Co filed Critical Bell & Howell Co
Application granted granted Critical
Publication of AT303524B publication Critical patent/AT303524B/en

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/73—Colour balance circuits, e.g. white balance circuits or colour temperature control

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Prostheses (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
AT1103769A 1968-11-29 1969-11-26 Device for controlling the exposure for photographic copying machines AT303524B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US77981768A 1968-11-29 1968-11-29

Publications (1)

Publication Number Publication Date
AT303524B true AT303524B (en) 1972-11-27

Family

ID=25117669

Family Applications (1)

Application Number Title Priority Date Filing Date
AT1103769A AT303524B (en) 1968-11-29 1969-11-26 Device for controlling the exposure for photographic copying machines

Country Status (7)

Country Link
AT (1) AT303524B (en)
BE (1) BE742395A (en)
CH (1) CH518571A (en)
DE (1) DE1958923A1 (en)
FR (1) FR2024524A1 (en)
GB (1) GB1282602A (en)
NL (1) NL6917930A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4522491A (en) * 1979-09-17 1985-06-11 Ingalls Marjorie D Method for reproducing one or more target colors on photographic paper or the like
US4425417A (en) 1979-09-17 1984-01-10 Ingalls Marjorie D Method for preparation of a color proof from a set of color separation films, masks or the like
US4411529A (en) 1979-09-17 1983-10-25 Ingalls Marjorie D Color reference data base and method of preparing same

Also Published As

Publication number Publication date
GB1282602A (en) 1972-07-19
BE742395A (en) 1970-05-04
NL6917930A (en) 1970-06-02
DE1958923A1 (en) 1970-06-11
FR2024524A1 (en) 1970-08-28
CH518571A (en) 1972-01-31

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee