GB684040A - Improvements in or relating to the production of photographic printing paper - Google Patents

Improvements in or relating to the production of photographic printing paper

Info

Publication number
GB684040A
GB684040A GB1020350A GB1020350A GB684040A GB 684040 A GB684040 A GB 684040A GB 1020350 A GB1020350 A GB 1020350A GB 1020350 A GB1020350 A GB 1020350A GB 684040 A GB684040 A GB 684040A
Authority
GB
United Kingdom
Prior art keywords
paper
coating
dispersion
photographic
coatings
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
GB1020350A
Inventor
Eric Charles Edward Hunter
Arthur John Turner
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.)
CASSIO PHOTOGRAPHIC PAPER COMP
Original Assignee
CASSIO PHOTOGRAPHIC PAPER COMP
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 CASSIO PHOTOGRAPHIC PAPER COMP filed Critical CASSIO PHOTOGRAPHIC PAPER COMP
Priority to GB1020350A priority Critical patent/GB684040A/en
Publication of GB684040A publication Critical patent/GB684040A/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
    • G03C1/775—Photosensitive materials characterised by the base or auxiliary layers the base being of paper
    • G03C1/79—Macromolecular coatings or impregnations therefor, e.g. varnishes

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Paper (AREA)

Abstract

684,040. Photographic paper. CASSIO PHOTOGRAPHIC PAPER CO., Ltd. March 20, 1951 [April 25, 1950], No. 10203/50. Class 98 (ii). [Also in Group VIII] A photographic light-sensitive paper is prepared by applying to a paper base a coating of a dispersion of barium sulphate in a film-forming medium, e.g. gelatin or polyvinyl alcohol, bringing the outer surface of the coating into contact with a smooth highly-polished casting surface, setting and drying the coating while in contact with the surface, separating the coated paper from the surface, supercoating with one or more coatings of fluid gelatino silver halide photographic emulsion, and setting and drying the emulsion coating or coatings. In a continuous process the barium sulphate dispersion is fed into the nip between a heated revolving drum and the paper base, the paper is allowed to revolve with the drum for part of a revolution and is then continuously stripped off. If the casting surface is metal 0.1-1 per cent of a wetting agent, and if glass 0.1-1 per cent of a cationic wetting agent may be added to the dispersion, which may also include chrome alum, citric acid, glycerine, or dyestuffs. 35-60 grms. dry weight per sq. metre is a suitable dispersion coating. Specifications 331,578, 522,828 and 575,254, [all in Group VIII], are referred to.
GB1020350A 1950-04-25 1950-04-25 Improvements in or relating to the production of photographic printing paper Expired GB684040A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1020350A GB684040A (en) 1950-04-25 1950-04-25 Improvements in or relating to the production of photographic printing paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1020350A GB684040A (en) 1950-04-25 1950-04-25 Improvements in or relating to the production of photographic printing paper

Publications (1)

Publication Number Publication Date
GB684040A true GB684040A (en) 1952-12-10

Family

ID=9963482

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1020350A Expired GB684040A (en) 1950-04-25 1950-04-25 Improvements in or relating to the production of photographic printing paper

Country Status (1)

Country Link
GB (1) GB684040A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3516844A (en) * 1966-07-28 1970-06-23 Eastman Kodak Co Coating of gelatin silver halide photographic emulsions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3516844A (en) * 1966-07-28 1970-06-23 Eastman Kodak Co Coating of gelatin silver halide photographic emulsions

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