IT1069253B - APPARATUS FOR AUTOMATIC ADJUSTMENT OF LIGHT EXPOSURE IN MICROFILM CAMERA - Google Patents

APPARATUS FOR AUTOMATIC ADJUSTMENT OF LIGHT EXPOSURE IN MICROFILM CAMERA

Info

Publication number
IT1069253B
IT1069253B IT5228676A IT5228676A IT1069253B IT 1069253 B IT1069253 B IT 1069253B IT 5228676 A IT5228676 A IT 5228676A IT 5228676 A IT5228676 A IT 5228676A IT 1069253 B IT1069253 B IT 1069253B
Authority
IT
Italy
Prior art keywords
automatic adjustment
light exposure
microfilm camera
microfilm
camera
Prior art date
Application number
IT5228676A
Other languages
Italian (it)
Original Assignee
Agfa Gevaert Ag
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 Agfa Gevaert Ag filed Critical Agfa Gevaert Ag
Application granted granted Critical
Publication of IT1069253B publication Critical patent/IT1069253B/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)
  • Control Of Exposure In Printing And Copying (AREA)
IT5228676A 1975-11-24 1976-11-22 APPARATUS FOR AUTOMATIC ADJUSTMENT OF LIGHT EXPOSURE IN MICROFILM CAMERA IT1069253B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752552589 DE2552589A1 (en) 1975-11-24 1975-11-24 DEVICE FOR AUTOMATIC EXPOSURE CONTROL IN MICROFILM CURRENT CAMERAS

Publications (1)

Publication Number Publication Date
IT1069253B true IT1069253B (en) 1985-03-25

Family

ID=5962466

Family Applications (1)

Application Number Title Priority Date Filing Date
IT5228676A IT1069253B (en) 1975-11-24 1976-11-22 APPARATUS FOR AUTOMATIC ADJUSTMENT OF LIGHT EXPOSURE IN MICROFILM CAMERA

Country Status (4)

Country Link
DE (1) DE2552589A1 (en)
FR (1) FR2332551A1 (en)
GB (1) GB1571818A (en)
IT (1) IT1069253B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2746990C2 (en) * 1977-10-19 1979-10-25 Agfa-Gevaert Ag, 5090 Leverkusen Automatic exposure for microfilm recorders
DE2945166A1 (en) * 1979-11-08 1981-05-14 Dr. Böger Duplomat Apparate KG (GmbH & Co), 2000 Wedel CIRCUIT ARRANGEMENT FOR CONTROLLING THE EXPOSURE TIME OF REPRODUCTION CAMERAS
US4530011A (en) * 1981-06-19 1985-07-16 Loge/Dunn Instruments, Inc. Apparatus for maintaining of a cathode ray tube image within the light acceptance range of a photographic film
DE3407064A1 (en) * 1983-02-28 1984-08-30 Canon K.K., Tokio/Tokyo IMAGE REPRODUCTION DEVICE
JPH0222638A (en) * 1988-07-11 1990-01-25 Brother Ind Ltd Image forming device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2101932A (en) * 1934-04-20 1937-12-14 Ig Farbenindustrie Ag Exposure control
DE1162192B (en) * 1957-10-23 1964-01-30 Agfa Ag Photographic copier with a photoelectric device for automatic control of the exposure time
US3120161A (en) * 1961-10-18 1964-02-04 De Witt H Pickens Diaphragm controlling system
DE1214524B (en) * 1965-03-22 1966-04-14 Mikrofilm G M B H Method and device for practicing the same for automatic exposure control in microfilm cameras
DE2163688C3 (en) * 1971-12-22 1981-02-19 Agfa-Gevaert Ag, 5090 Leverkusen Device for regulating exposure in a photographic copier
US3795445A (en) * 1973-03-15 1974-03-05 Eastman Kodak Co Slope control exposure control apparatus

Also Published As

Publication number Publication date
FR2332551A1 (en) 1977-06-17
GB1571818A (en) 1980-07-23
FR2332551B1 (en) 1983-02-04
DE2552589A1 (en) 1977-05-26

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