GB1325442A - Photomechanical processes - Google Patents

Photomechanical processes

Info

Publication number
GB1325442A
GB1325442A GB1325442DA GB1325442A GB 1325442 A GB1325442 A GB 1325442A GB 1325442D A GB1325442D A GB 1325442DA GB 1325442 A GB1325442 A GB 1325442A
Authority
GB
United Kingdom
Prior art keywords
film
photographic
areas
emulsion
lith
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
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.)
Sun Printers Ltd
Original Assignee
Sun Printers 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 Sun Printers Ltd filed Critical Sun Printers Ltd
Publication of GB1325442A publication Critical patent/GB1325442A/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
    • G03F5/00—Screening processes; Screens therefor
    • G03F5/24—Screening processes; Screens therefor by multiple exposure, e.g. combined processes for line photo and screen
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/825—Photosensitive materials characterised by the base or auxiliary layers characterised by antireflection means or visible-light filtering means, e.g. antihalation
    • 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
    • G03F7/004—Photosensitive materials
    • G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
    • G03F7/091—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers characterised by antireflection means or light filtering or absorbing means, e.g. anti-halation, contrast enhancement

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

1325442 Photographic film SUN PRINTERS Ltd 21 Aug 1970 [21 May 1969] 25860/69 Headings G2C and G2M Photographic film having a transparent base and a photo-sensitive emulsion layer comprises a filter layer (which may constitute the emulsion layer) which is unaffected by conventional processing incorporates a dye or pigment which has a photographic density in the range 0À2-0À5 and is cleanly removable (e.g. chemically or by stripping from any desired area of the film after formation of a photographic image on the film. In the Example an aqueous gelatine/carbon composition is coated over the emulsion of a lith stripping film; some areas of the film are protected by black patches and the film is then exposed and lith developed; in the protected areas the emulsion and filter layers are scribed around and stripped out; continuous tone negatives were positioned using petroleum jelly over the stripped areas and the composite obtained contact printed to give a positive film for preparing gravure printing cylinders.
GB1325442D 1970-08-21 1970-08-21 Photomechanical processes Expired GB1325442A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2586069 1970-08-21

Publications (1)

Publication Number Publication Date
GB1325442A true GB1325442A (en) 1973-08-01

Family

ID=10234533

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1325442D Expired GB1325442A (en) 1970-08-21 1970-08-21 Photomechanical processes

Country Status (1)

Country Link
GB (1) GB1325442A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2132789A (en) * 1982-11-24 1984-07-11 Western Electric Co Method of pattern generation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2132789A (en) * 1982-11-24 1984-07-11 Western Electric Co Method of pattern generation

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees