GB977234A - Improvements in and relating to the production of printing blocks and plates - Google Patents

Improvements in and relating to the production of printing blocks and plates

Info

Publication number
GB977234A
GB977234A GB938863A GB938863A GB977234A GB 977234 A GB977234 A GB 977234A GB 938863 A GB938863 A GB 938863A GB 938863 A GB938863 A GB 938863A GB 977234 A GB977234 A GB 977234A
Authority
GB
United Kingdom
Prior art keywords
photographic negative
accentuating
plates
portions
relating
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
GB938863A
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 GB938863A priority Critical patent/GB977234A/en
Publication of GB977234A publication Critical patent/GB977234A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Preparing Plates And Mask In Photomechanical Process (AREA)

Abstract

977,234. Photomechanical printing processes. J. B. CROSSLAND. May 14,1963 [March 8, 1963], No. 9388/63. Heading G2M. A method of producing printing blocks or plates comprises making a photographic negative on orthochromatic film, accentuating the dark portions of the subject, and a photographic negative in the form of a multiplicity of dots of varying size, accentuating the higher portions of the subject, preparing positives on a transparent base from each of these negatives, combining the positives and preparing therefrom a photographic negative from which is prepared in known manner, a printing block or plate. The photographic negative accentuating the lighter portions may be made through a screen.
GB938863A 1963-03-08 1963-03-08 Improvements in and relating to the production of printing blocks and plates Expired GB977234A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB938863A GB977234A (en) 1963-03-08 1963-03-08 Improvements in and relating to the production of printing blocks and plates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB938863A GB977234A (en) 1963-03-08 1963-03-08 Improvements in and relating to the production of printing blocks and plates

Publications (1)

Publication Number Publication Date
GB977234A true GB977234A (en) 1964-12-02

Family

ID=9871013

Family Applications (1)

Application Number Title Priority Date Filing Date
GB938863A Expired GB977234A (en) 1963-03-08 1963-03-08 Improvements in and relating to the production of printing blocks and plates

Country Status (1)

Country Link
GB (1) GB977234A (en)

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