GB665649A - Improvements in photographic films and processes for producing stencils therewith - Google Patents

Improvements in photographic films and processes for producing stencils therewith

Info

Publication number
GB665649A
GB665649A GB897249A GB897249A GB665649A GB 665649 A GB665649 A GB 665649A GB 897249 A GB897249 A GB 897249A GB 897249 A GB897249 A GB 897249A GB 665649 A GB665649 A GB 665649A
Authority
GB
United Kingdom
Prior art keywords
gelatine
support
layer
stripped
pigment
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
GB897249A
Inventor
Frank William Sharp
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.)
MacDermid Autotype Ltd
Original Assignee
Autotype Co 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 Autotype Co Ltd filed Critical Autotype Co Ltd
Priority to GB897249A priority Critical patent/GB665649A/en
Publication of GB665649A publication Critical patent/GB665649A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/12—Production of screen printing forms or similar printing forms, e.g. stencils

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

665,649. Producing photographic stencils. AUTOTYPE CO., Ltd. March 8, 1950 [April 1, 1949], No. 8972/49. Class 98 (ii). A photographic film for use in the production of a printing stencil comprises a layer of gelatine containing a light-sensitive iron salt supported on a sheet of material which is sufficiently waterresistant to maintain substantially constant size when immersed in hot or cold water and subsequently dried, but sufficiently thin and lacking in adherence to gelatine to be capable, when dried after wetting, of being stripped from the gelatine layer. The support may be transparent and of vinyl acetate-vinyl chloride copolymer or polystyrene, or may be of cellulose acetate or ethyl cellulose, or of wax-coated celluloid. The gelatine may contain a pigment rendering the image produced readily visible. The sensitive layer may be produced by coating the support with an aqueous solution, of gelatine, ferric ammonium oxalate, glycerol lactate, and pigment. After exposure through the support, the exposed parts of the gelatine layer are hardened by treatment with a solution of an oxidizing agent, e.g. hydrogen peroxide or potassium dichromate, the unhardened gelatine is washed away in warm water, the gelatine image is pressed into contact with bolting silk or similar meshed material and allowed to dry, and the support is stripped off.
GB897249A 1949-04-01 1949-04-01 Improvements in photographic films and processes for producing stencils therewith Expired GB665649A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB897249A GB665649A (en) 1949-04-01 1949-04-01 Improvements in photographic films and processes for producing stencils therewith

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB897249A GB665649A (en) 1949-04-01 1949-04-01 Improvements in photographic films and processes for producing stencils therewith

Publications (1)

Publication Number Publication Date
GB665649A true GB665649A (en) 1952-01-30

Family

ID=9862859

Family Applications (1)

Application Number Title Priority Date Filing Date
GB897249A Expired GB665649A (en) 1949-04-01 1949-04-01 Improvements in photographic films and processes for producing stencils therewith

Country Status (1)

Country Link
GB (1) GB665649A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2927021A (en) * 1956-03-27 1960-03-01 Horizons Inc Method of producing a relief image
US3101270A (en) * 1959-04-27 1963-08-20 Gen Aniline & Film Corp Photopolymerization of unsaturated organic compounds by means of radiation sensitive iron compounds as photoinitiators
US3136638A (en) * 1959-06-26 1964-06-09 Gen Aniline & Film Corp Photosensitive stencil and process of making the same
US3169065A (en) * 1960-10-11 1965-02-09 Harris Intertype Corp Method of making resist and deep etch lithographic printing plates with ferric ammonium compound sensitized plates
US3549376A (en) * 1967-11-02 1970-12-22 Du Pont Image-forming compositions containing polymer binding agents and coordination complexes of iron (iii) organic salts
US3620735A (en) * 1967-06-12 1971-11-16 Diagravure Film Mfg Corp Relief image process utilizing a simple and a complex ferric salt
US5556735A (en) * 1990-06-27 1996-09-17 Coates Brothers Plc Image-forming process

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2927021A (en) * 1956-03-27 1960-03-01 Horizons Inc Method of producing a relief image
US3101270A (en) * 1959-04-27 1963-08-20 Gen Aniline & Film Corp Photopolymerization of unsaturated organic compounds by means of radiation sensitive iron compounds as photoinitiators
US3136638A (en) * 1959-06-26 1964-06-09 Gen Aniline & Film Corp Photosensitive stencil and process of making the same
US3169065A (en) * 1960-10-11 1965-02-09 Harris Intertype Corp Method of making resist and deep etch lithographic printing plates with ferric ammonium compound sensitized plates
US3620735A (en) * 1967-06-12 1971-11-16 Diagravure Film Mfg Corp Relief image process utilizing a simple and a complex ferric salt
US3549376A (en) * 1967-11-02 1970-12-22 Du Pont Image-forming compositions containing polymer binding agents and coordination complexes of iron (iii) organic salts
US5556735A (en) * 1990-06-27 1996-09-17 Coates Brothers Plc Image-forming process
US5750291A (en) * 1990-06-27 1998-05-12 Coates Brothers Plc Image-forming process

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