GB221505A - A photo-mechanical process for making planographic printing plates - Google Patents

A photo-mechanical process for making planographic printing plates

Info

Publication number
GB221505A
GB221505A GB20768/24A GB2076824A GB221505A GB 221505 A GB221505 A GB 221505A GB 20768/24 A GB20768/24 A GB 20768/24A GB 2076824 A GB2076824 A GB 2076824A GB 221505 A GB221505 A GB 221505A
Authority
GB
United Kingdom
Prior art keywords
negative
paper
printing
photo
transparent
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
GB20768/24A
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.)
MAN AG
Original Assignee
MAN Maschinenfabrik Augsburg Nuernberg AG
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 MAN Maschinenfabrik Augsburg Nuernberg AG filed Critical MAN Maschinenfabrik Augsburg Nuernberg AG
Publication of GB221505A publication Critical patent/GB221505A/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
    • G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
    • G03F1/92—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof prepared from printing surfaces
    • 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)
  • Printing Methods (AREA)

Abstract

221,505. Maschinenfabrik Augsburg- N³rnberg Akt.-Ges. Sept. 6, 1923, [Convention date]. Photo-mechanical printing-surfaces. - Planographic printing plates are prepared by first producing a printed text or black and white pen inscriptions or drawings on transparent or semitransparent material such as paper, producing from this positive a negative on transparent or translucent lightsensitized material preferably sepia paper, and printing the negative on to the sensitive plate. Screen negatives of half tone pictures may be stripped from their support and transferred on to the paper negative of the type matter and copied therewith on to the plate, the stripping being preferably effected by means of a temporary support consisting of a thin sheet of flexible transluscent material, such as oiled or tracing paper or celluloid film, to which the screen negative adheres less strongly than to the paper negative. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the transfer of grained half-tone picture negatives on to the paper negative, the graining being preferably effected by using ammonia, dilute caustic alkali solution, and a bath of water and calcium chloride, and also the use of the process for transferring to the printing plate several pictures without letterpress which have been photographed on different plates. This subject-matter does not appear in the Specification as accepted.
GB20768/24A 1923-09-06 1924-09-03 A photo-mechanical process for making planographic printing plates Expired GB221505A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE221505X 1923-09-06

Publications (1)

Publication Number Publication Date
GB221505A true GB221505A (en) 1925-05-14

Family

ID=5840393

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20768/24A Expired GB221505A (en) 1923-09-06 1924-09-03 A photo-mechanical process for making planographic printing plates

Country Status (1)

Country Link
GB (1) GB221505A (en)

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