GB640272A - Soluble photographic layers of colloidal gums and process of conditioning such gums for such use - Google Patents

Soluble photographic layers of colloidal gums and process of conditioning such gums for such use

Info

Publication number
GB640272A
GB640272A GB18694/47A GB1869447A GB640272A GB 640272 A GB640272 A GB 640272A GB 18694/47 A GB18694/47 A GB 18694/47A GB 1869447 A GB1869447 A GB 1869447A GB 640272 A GB640272 A GB 640272A
Authority
GB
United Kingdom
Prior art keywords
gums
colloid
layer
agar
acid
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
GB18694/47A
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.)
GAF Chemicals Corp
Original Assignee
General Aniline and Film Corp
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 General Aniline and Film Corp filed Critical General Aniline and Film Corp
Publication of GB640272A publication Critical patent/GB640272A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/825—Photosensitive materials characterised by the base or auxiliary layers characterised by antireflection means or visible-light filtering means, e.g. antihalation
    • G03C1/835—Macromolecular substances therefor, e.g. mordants
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/805—Photosensitive materials characterised by the base or auxiliary layers characterised by stripping layers or stripping means

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)

Abstract

A hydrolysed colloid, serving as an adhesive layer between the permanent layer carrying the silver halide emulsion and a temporary antihalation or similar layer in a photographic film, is prepared by treating agar-agar, carrageen, lichen or psyllium-seed extract with an acid or enzyme and heating until the colloid is readily soluble in photographic baths and can be cast into a transparent, non-sticky mass. The acid used may be sulphuric, hydrochloric, acetic, formic or propionic acid, while the enzymes may be pepsin, trypsin, pancreatin, rennim, pectinase or diacstase. Specification 632,402, [Group XX], is referred to. The Specification as open to inspection under Sect. 91 states also that the anti-halation layer itself may be constituted by the colloid. This subject-matter does not appear in the Specification as accepted.
GB18694/47A 1940-09-20 1947-07-14 Soluble photographic layers of colloidal gums and process of conditioning such gums for such use Expired GB640272A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US357609A US2330905A (en) 1940-09-20 1940-09-20 Soluble photographic layer of colloidal gums and process of conditioning such gums for such use

Publications (1)

Publication Number Publication Date
GB640272A true GB640272A (en) 1950-07-19

Family

ID=23406320

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18694/47A Expired GB640272A (en) 1940-09-20 1947-07-14 Soluble photographic layers of colloidal gums and process of conditioning such gums for such use

Country Status (3)

Country Link
US (1) US2330905A (en)
BE (1) BE475545A (en)
GB (1) GB640272A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR8008724A (en) * 1979-06-21 1981-04-28 Minnesota Mining & Mfg COMPOSITE PHOTOGRAPHIC STRUCTURE
US4407932A (en) * 1981-03-12 1983-10-04 Minnesota Mining & Manufacturing Co. Fade-resistant and abrasion resistant photographic reproduction, method of preparing, and photographic product therefor
EP1083797A4 (en) * 1998-06-05 2001-08-08 Kellog Co Acid and solvent modification of psyllium

Also Published As

Publication number Publication date
US2330905A (en) 1943-10-05
BE475545A (en)

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