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FR827570A - Measuring or copying device - Google Patents

Measuring or copying device

Info

Publication number
FR827570A
FR827570A FR827570DA FR827570A FR 827570 A FR827570 A FR 827570A FR 827570D A FR827570D A FR 827570DA FR 827570 A FR827570 A FR 827570A
Authority
FR
France
Prior art keywords
measuring
copying device
copying
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
Other languages
French (fr)
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.)
Zeiss Ikon AG
Original Assignee
Zeiss Ikon 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 Zeiss Ikon AG filed Critical Zeiss Ikon AG
Application granted granted Critical
Publication of FR827570A publication Critical patent/FR827570A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4209—Photoelectric exposure meters for determining the exposure time in recording or reproducing
    • G01J1/4223—Photoelectric exposure meters for determining the exposure time in recording or reproducing specially adapted for copy - or printing apparatus

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
FR827570D 1937-01-01 1937-10-05 Measuring or copying device Expired FR827570A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED74275D DE716080C (en) 1937-01-01 1937-01-01 Copier with photocell used to determine the exposure time

Publications (1)

Publication Number Publication Date
FR827570A true FR827570A (en) 1938-04-28

Family

ID=7061607

Family Applications (1)

Application Number Title Priority Date Filing Date
FR827570D Expired FR827570A (en) 1937-01-01 1937-10-05 Measuring or copying device

Country Status (3)

Country Link
DE (1) DE716080C (en)
FR (1) FR827570A (en)
GB (1) GB504203A (en)

Also Published As

Publication number Publication date
DE716080C (en) 1942-01-13
GB504203A (en) 1939-04-21

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