GB828531A - Improvements relating to photographic printing apparatus - Google Patents

Improvements relating to photographic printing apparatus

Info

Publication number
GB828531A
GB828531A GB2477954A GB2477954A GB828531A GB 828531 A GB828531 A GB 828531A GB 2477954 A GB2477954 A GB 2477954A GB 2477954 A GB2477954 A GB 2477954A GB 828531 A GB828531 A GB 828531A
Authority
GB
United Kingdom
Prior art keywords
curve
blanket
cylinder
printing apparatus
photographic printing
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
GB2477954A
Inventor
Lawrence Burns
Eugene John Wender
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2477954A priority Critical patent/GB828531A/en
Publication of GB828531A publication Critical patent/GB828531A/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)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Abstract

828,531. Photographic printing apparatus. WENDER, E. J. March 26, 1866 [Dec. 25, 1954], No. 24779/54. Class 98(2) A rigid transparent curve or cylinder 15 with internal light source 11 has a resilient pressure blanket 16 formed mainly of a natural curvature of greater redius than that of the curve or cylinder secured at one end against or adjacent the outer surface thereof and provided at its other end with fastening means such as a rod with projecting ends 18 to engages,catches 19 and hold the blanket and, when present. copy material against the curve or cylinder. When the latter is used it may be carried by uprights 13 provided from a base 10, the uprights being preferably formed as reflectors for uniformity of exposure at the edges of the prints. The blanket 16 may be of metal for example aluminum alloy and may have resilient lining 21 as of foamed elastic material. A timing switch 12 as of Specification 828,532 [Group XXXVII] may be mounted on the base.
GB2477954A 1954-12-25 1954-12-25 Improvements relating to photographic printing apparatus Expired GB828531A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2477954A GB828531A (en) 1954-12-25 1954-12-25 Improvements relating to photographic printing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2477954A GB828531A (en) 1954-12-25 1954-12-25 Improvements relating to photographic printing apparatus

Publications (1)

Publication Number Publication Date
GB828531A true GB828531A (en) 1960-02-17

Family

ID=10217133

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2477954A Expired GB828531A (en) 1954-12-25 1954-12-25 Improvements relating to photographic printing apparatus

Country Status (1)

Country Link
GB (1) GB828531A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3289562A (en) * 1965-05-24 1966-12-06 Reeves Ind Inc Holder for exposure station of document copier
EP0006251A1 (en) * 1978-04-24 1980-01-09 Hans Haus Device for duplicating microfilms

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3289562A (en) * 1965-05-24 1966-12-06 Reeves Ind Inc Holder for exposure station of document copier
EP0006251A1 (en) * 1978-04-24 1980-01-09 Hans Haus Device for duplicating microfilms

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