FR855977A - Protection and drive device for obtaining photographic copies - Google Patents

Protection and drive device for obtaining photographic copies

Info

Publication number
FR855977A
FR855977A FR855977DA FR855977A FR 855977 A FR855977 A FR 855977A FR 855977D A FR855977D A FR 855977DA FR 855977 A FR855977 A FR 855977A
Authority
FR
France
Prior art keywords
protection
drive device
obtaining photographic
photographic copies
copies
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)
Inventor
Petit
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 filed Critical
Application granted granted Critical
Publication of FR855977A publication Critical patent/FR855977A/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
    • G03B27/02—Exposure apparatus for contact printing
    • G03B27/14—Details
    • G03B27/18—Maintaining or producing contact pressure between original and light-sensitive material
    • G03B27/22—Maintaining or producing contact pressure between original and light-sensitive material by stretching over a curved surface

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR855977D 1939-06-09 1939-06-09 Protection and drive device for obtaining photographic copies Expired FR855977A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR855977T 1939-06-09

Publications (1)

Publication Number Publication Date
FR855977A true FR855977A (en) 1940-05-24

Family

ID=9328584

Family Applications (1)

Application Number Title Priority Date Filing Date
FR855977D Expired FR855977A (en) 1939-06-09 1939-06-09 Protection and drive device for obtaining photographic copies

Country Status (1)

Country Link
FR (1) FR855977A (en)

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