AT272835B - Process for the contrast-dependent control of the exposure in copiers - Google Patents

Process for the contrast-dependent control of the exposure in copiers

Info

Publication number
AT272835B
AT272835B AT469566A AT469566A AT272835B AT 272835 B AT272835 B AT 272835B AT 469566 A AT469566 A AT 469566A AT 469566 A AT469566 A AT 469566A AT 272835 B AT272835 B AT 272835B
Authority
AT
Austria
Prior art keywords
copiers
exposure
contrast
dependent control
dependent
Prior art date
Application number
AT469566A
Other languages
German (de)
Original Assignee
Pentacon Dresden Veb
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 Pentacon Dresden Veb filed Critical Pentacon Dresden Veb
Application granted granted Critical
Publication of AT272835B publication Critical patent/AT272835B/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
    • G03B27/80—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus in dependence upon automatic analysis of the original

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Facsimile Scanning Arrangements (AREA)
AT469566A 1966-02-04 1966-05-18 Process for the contrast-dependent control of the exposure in copiers AT272835B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD11564666 1966-02-04

Publications (1)

Publication Number Publication Date
AT272835B true AT272835B (en) 1969-07-25

Family

ID=5478805

Family Applications (2)

Application Number Title Priority Date Filing Date
AT469566A AT272835B (en) 1966-02-04 1966-05-18 Process for the contrast-dependent control of the exposure in copiers
AT1085167A AT274423B (en) 1966-02-04 1966-05-18 Device for point-by-point measurement of the partial luminance of a transparent image carrier

Family Applications After (1)

Application Number Title Priority Date Filing Date
AT1085167A AT274423B (en) 1966-02-04 1966-05-18 Device for point-by-point measurement of the partial luminance of a transparent image carrier

Country Status (2)

Country Link
AT (2) AT272835B (en)
CH (1) CH483034A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8301858A (en) * 1983-05-26 1984-12-17 Oce Helioprint As REPRODUCTION CAMERA.
EP0438374B1 (en) * 1990-01-15 1994-03-09 Gretag Imaging Ag Method for producing photographic colour copies from originals

Also Published As

Publication number Publication date
CH483034A (en) 1969-12-15
AT274423B (en) 1969-09-25

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