GB191321455A - Process for the Production of Lithographic Printing Plates Photographically. - Google Patents

Process for the Production of Lithographic Printing Plates Photographically.

Info

Publication number
GB191321455A
GB191321455A GB191321455DA GB191321455A GB 191321455 A GB191321455 A GB 191321455A GB 191321455D A GB191321455D A GB 191321455DA GB 191321455 A GB191321455 A GB 191321455A
Authority
GB
United Kingdom
Prior art keywords
negative
lithographic printing
photographically
production
dusting
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
Inventor
Hermann Weck
Theodore Weck
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
Application granted granted Critical
Publication of GB191321455A publication Critical patent/GB191321455A/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
    • G03F7/004—Photosensitive materials
    • G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
    • G03F7/115—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having supports or layers with means for obtaining a screen effect or for obtaining better contact in vacuum printing

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Printing Plates And Materials Therefor (AREA)

Abstract

21,455. Week, H., and Week, T. June 18, [Convention date]. Photomechanical printing-surfaces. - In the preparation of lithographic printing-surfaces, in order to produce a grain in the opaque parts of the negative, the negative is dusted before exposure with a fusible substance, such as asphalt, and is heated to fix the dusting in the form of opaque grains. These operations are repeated until a suitable thickness of powder is obtained. After the negative is exposed and before or after development, the granular material is removed bv washing with naphtha or benzine. After drying, the negative is again dusted and grained in a similar way and several times if necessary, before using it to print the photo-lithographic surface. The first dusting and graining may alternatively be applied to a separate carrier, which is brought into contact with the negative for exposure.
GB191321455D 1913-06-18 1913-09-23 Process for the Production of Lithographic Printing Plates Photographically. Expired GB191321455A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE273946T 1913-06-18

Publications (1)

Publication Number Publication Date
GB191321455A true GB191321455A (en) 1914-05-07

Family

ID=32604773

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191321455D Expired GB191321455A (en) 1913-06-18 1913-09-23 Process for the Production of Lithographic Printing Plates Photographically.

Country Status (3)

Country Link
DE (1) DE273946C (en)
FR (1) FR462427A (en)
GB (1) GB191321455A (en)

Also Published As

Publication number Publication date
DE273946C (en)
FR462427A (en) 1914-01-27

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