GB315681A - Improvements relating to photographic and like screens - Google Patents

Improvements relating to photographic and like screens

Info

Publication number
GB315681A
GB315681A GB1101028A GB1101028A GB315681A GB 315681 A GB315681 A GB 315681A GB 1101028 A GB1101028 A GB 1101028A GB 1101028 A GB1101028 A GB 1101028A GB 315681 A GB315681 A GB 315681A
Authority
GB
United Kingdom
Prior art keywords
gelatin
screens
photographic
reticulating
reticulated
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
GB1101028A
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.)
THOMAS CRAWFORD ERWIN
Original Assignee
THOMAS CRAWFORD ERWIN
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 THOMAS CRAWFORD ERWIN filed Critical THOMAS CRAWFORD ERWIN
Priority to GB1101028A priority Critical patent/GB315681A/en
Publication of GB315681A publication Critical patent/GB315681A/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
    • G03F5/02—Screening processes; Screens therefor by projection methods
    • G03F5/12—Screening processes; Screens therefor by projection methods using other screens, e.g. granulated screen

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)

Abstract

315,681. Erwin, T. C. April 13, 1928. Photo-mechanical printing-surfaces.-Reticulated gelatin screens for photographic or photomechanical reproduction are produced by forming on a glass or other support a layer of plain gelatin which is hardened to such an extent as to be insoluble in hot water, and then reticulating the gelatin by an acid solution. Tanning agents such as alum, formalin and bichromates are used to harden the gelatin, either before or after coating it on the support, and hydrochloric, acetic sulphuric, nitric or phosphoric acid may be used for reticulating the gelatin. The reticulated screen may be enclosed between cover plates, the thickness of which is chosen according to the use of the screen, and the amount of reticulation. Two or more screens may be super-imposed and the intervening air exhausted to obtain contact between them. Examples are given of particular baths, temperatures, and treatments, varying according to the type of gelatin and the grain required.
GB1101028A 1928-04-13 1928-04-13 Improvements relating to photographic and like screens Expired GB315681A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1101028A GB315681A (en) 1928-04-13 1928-04-13 Improvements relating to photographic and like screens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1101028A GB315681A (en) 1928-04-13 1928-04-13 Improvements relating to photographic and like screens

Publications (1)

Publication Number Publication Date
GB315681A true GB315681A (en) 1929-07-15

Family

ID=9978384

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1101028A Expired GB315681A (en) 1928-04-13 1928-04-13 Improvements relating to photographic and like screens

Country Status (1)

Country Link
GB (1) GB315681A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2668762A (en) * 1946-02-20 1954-02-09 Rubinstein Leon Process of producing screens
US7780875B2 (en) 2005-01-13 2010-08-24 Cinvention Ag Composite materials containing carbon nanoparticles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2668762A (en) * 1946-02-20 1954-02-09 Rubinstein Leon Process of producing screens
US7780875B2 (en) 2005-01-13 2010-08-24 Cinvention Ag Composite materials containing carbon nanoparticles

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