GB217741A - Improvements in photographic printing processes - Google Patents

Improvements in photographic printing processes

Info

Publication number
GB217741A
GB217741A GB1391923A GB1391923A GB217741A GB 217741 A GB217741 A GB 217741A GB 1391923 A GB1391923 A GB 1391923A GB 1391923 A GB1391923 A GB 1391923A GB 217741 A GB217741 A GB 217741A
Authority
GB
United Kingdom
Prior art keywords
paper
allott
sensitized
colloid
printing processes
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
GB1391923A
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.)
Allott Jones & Co Ltd
Original Assignee
Allott Jones & 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 Allott Jones & Co Ltd filed Critical Allott Jones & Co Ltd
Priority to GB1391923A priority Critical patent/GB217741A/en
Publication of GB217741A publication Critical patent/GB217741A/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
    • G03F1/54—Absorbers, e.g. of opaque materials
    • G03F1/56—Organic absorbers, e.g. of photo-resists

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Paper (AREA)

Abstract

217,741. Allott, F. W. J., and Allott, Jones, & Co., Ltd. May 26, 1923. Paper for printing positives direct from an original such as a tracing is sensitized by an iron sensitizing composition containing a colloid, such as gum or gelatine, a dye or pigment, ferric chloride, and an organic acid such as tartaric or citric acid. The paper is dried after coating and the printed image is developed with wa.ter. Instead of a single sensitizing solution the paper may first be treated with the. colloid and colouring matter and afterwards sensitized with the ferric chloride and organic acid.
GB1391923A 1923-05-26 1923-05-26 Improvements in photographic printing processes Expired GB217741A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1391923A GB217741A (en) 1923-05-26 1923-05-26 Improvements in photographic printing processes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1391923A GB217741A (en) 1923-05-26 1923-05-26 Improvements in photographic printing processes

Publications (1)

Publication Number Publication Date
GB217741A true GB217741A (en) 1924-06-26

Family

ID=10031766

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1391923A Expired GB217741A (en) 1923-05-26 1923-05-26 Improvements in photographic printing processes

Country Status (1)

Country Link
GB (1) GB217741A (en)

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