GB605530A - Improvements in photo-copying machines - Google Patents

Improvements in photo-copying machines

Info

Publication number
GB605530A
GB605530A GB3508545A GB3508545A GB605530A GB 605530 A GB605530 A GB 605530A GB 3508545 A GB3508545 A GB 3508545A GB 3508545 A GB3508545 A GB 3508545A GB 605530 A GB605530 A GB 605530A
Authority
GB
United Kingdom
Prior art keywords
trough
contact
bands
cylindrical
photo
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
GB3508545A
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.)
FRANK GEORGE FAUX
Hall Harding Ltd
Original Assignee
FRANK GEORGE FAUX
Hall Harding Ltd
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 FRANK GEORGE FAUX, Hall Harding Ltd filed Critical FRANK GEORGE FAUX
Priority to GB3508545A priority Critical patent/GB605530A/en
Publication of GB605530A publication Critical patent/GB605530A/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)
  • Cleaning In Electrography (AREA)
  • Cleaning In General (AREA)

Abstract

605,530. Photographic contact printing apparatus. HALL, HARDING, Ltd., BUNGAY, J. A., and FAUX, F. G. Dec. 28, 1945, No. 35085. [Class 98 (ii)] In a contact-printing machine of the kind in which the drawings to be copied are caused to travel in contact with the lightsensitive material over the outer convex surface of a stationary glass trough by means of roller-driven endless fabric bands, the trough is rotatable about its axis to move it out of contact with the bands and to expose its outer surface for cleaning. As shown, the part-cylindrical trough 1 is mounted in end discs 2 on the shaft 3. The cylindrical surface .may be completed by opaque sheet material. The trough may be rotated to and from the cleaning position by a hand wheel provided with a spring plunger to arrest it in either of its two positions of the trough.
GB3508545A 1945-12-28 1945-12-28 Improvements in photo-copying machines Expired GB605530A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3508545A GB605530A (en) 1945-12-28 1945-12-28 Improvements in photo-copying machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3508545A GB605530A (en) 1945-12-28 1945-12-28 Improvements in photo-copying machines

Publications (1)

Publication Number Publication Date
GB605530A true GB605530A (en) 1948-07-26

Family

ID=10373617

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3508545A Expired GB605530A (en) 1945-12-28 1945-12-28 Improvements in photo-copying machines

Country Status (1)

Country Link
GB (1) GB605530A (en)

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