GB1392647A - Photographic projectors - Google Patents

Photographic projectors

Info

Publication number
GB1392647A
GB1392647A GB2131572A GB2131572A GB1392647A GB 1392647 A GB1392647 A GB 1392647A GB 2131572 A GB2131572 A GB 2131572A GB 2131572 A GB2131572 A GB 2131572A GB 1392647 A GB1392647 A GB 1392647A
Authority
GB
United Kingdom
Prior art keywords
light
paths
sensing device
conduit
predetermined area
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
GB2131572A
Other languages
English (en)
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.)
HOH HAHNE HOHLUX GmbH
Original Assignee
HOH HAHNE HOHLUX GmbH
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 HOH HAHNE HOHLUX GmbH filed Critical HOH HAHNE HOHLUX GmbH
Publication of GB1392647A publication Critical patent/GB1392647A/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
    • G03B27/727—Optical projection devices wherein the contrast is controlled optically (e.g. uniform exposure, two colour exposure on variable contrast sensitive material)

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection-Type Copiers In General (AREA)
GB2131572A 1971-05-19 1972-05-08 Photographic projectors Expired GB1392647A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712124782 DE2124782A1 (de) 1971-05-19 1971-05-19 Vorrichtung an einer Reproduktionskamera zur Steuerung des Schwärzungsumfangs von Halbtonnegativen

Publications (1)

Publication Number Publication Date
GB1392647A true GB1392647A (en) 1975-04-30

Family

ID=5808294

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2131572A Expired GB1392647A (en) 1971-05-19 1972-05-08 Photographic projectors

Country Status (3)

Country Link
CH (1) CH578746A5 (enExample)
DE (1) DE2124782A1 (enExample)
GB (1) GB1392647A (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5227840A (en) * 1991-06-03 1993-07-13 Eastman Kodak Company Automated photographic contact printing system

Also Published As

Publication number Publication date
DE2124782A1 (de) 1972-12-07
CH578746A5 (enExample) 1976-08-13

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees