GB640820A - Improvements in or relating to photographic contact printing apparatus - Google Patents

Improvements in or relating to photographic contact printing apparatus

Info

Publication number
GB640820A
GB640820A GB2353248A GB2353248A GB640820A GB 640820 A GB640820 A GB 640820A GB 2353248 A GB2353248 A GB 2353248A GB 2353248 A GB2353248 A GB 2353248A GB 640820 A GB640820 A GB 640820A
Authority
GB
United Kingdom
Prior art keywords
relating
printing apparatus
contact printing
photographic contact
photographic
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
GB2353248A
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.)
HENRY ALLERA
Original Assignee
HENRY ALLERA
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 HENRY ALLERA filed Critical HENRY ALLERA
Priority to GB2353248A priority Critical patent/GB640820A/en
Publication of GB640820A publication Critical patent/GB640820A/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
    • G03B27/20—Maintaining or producing contact pressure between original and light-sensitive material by using a vacuum or fluid pressure

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
GB2353248A 1948-09-07 1948-09-07 Improvements in or relating to photographic contact printing apparatus Expired GB640820A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2353248A GB640820A (en) 1948-09-07 1948-09-07 Improvements in or relating to photographic contact printing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2353248A GB640820A (en) 1948-09-07 1948-09-07 Improvements in or relating to photographic contact printing apparatus

Publications (1)

Publication Number Publication Date
GB640820A true GB640820A (en) 1950-07-26

Family

ID=10197151

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2353248A Expired GB640820A (en) 1948-09-07 1948-09-07 Improvements in or relating to photographic contact printing apparatus

Country Status (1)

Country Link
GB (1) GB640820A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2689179A (en) * 1951-03-02 1954-09-14 Haloid Co Xerographic contact copying device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2689179A (en) * 1951-03-02 1954-09-14 Haloid Co Xerographic contact copying device

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