US2346008A - Manufacture of paper for photographic purposes - Google Patents

Manufacture of paper for photographic purposes Download PDF

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Publication number
US2346008A
US2346008A US348014A US34801440A US2346008A US 2346008 A US2346008 A US 2346008A US 348014 A US348014 A US 348014A US 34801440 A US34801440 A US 34801440A US 2346008 A US2346008 A US 2346008A
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US
United States
Prior art keywords
paper
water
cellulose
coating
photographic
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 - Lifetime
Application number
US348014A
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English (en)
Inventor
Clark Halford Rogers
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to US348013A priority Critical patent/US2358056A/en
Priority to US348014A priority patent/US2346008A/en
Priority to DEK161664D priority patent/DE740796C/de
Priority to FR897811D priority patent/FR897811A/fr
Priority to FR897960D priority patent/FR897960A/fr
Application granted granted Critical
Publication of US2346008A publication Critical patent/US2346008A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/52—Cellulose; Derivatives thereof
    • 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

Definitions

  • This invention relates to the manufacture of paper for photographic purposes.
  • This paper is coated with a baryta coating employing a watersusceptible cellulose ester.
  • One object of my invention is to provide photographic paper to which, non-gelatin emulsions may be applied without any bleeding of the sensitizing dyes or any of the other constituents of the emulsion into the paper or into the baryta coating of the paper.
  • Other objectsof my ini vention will appear herein.
  • the cellulose ester which is employed, may be any water-susceptible, far-hydrolyzed, lower fatty acid ester of cellulose.
  • a tar-hydrolyzed cellulose acetate having an acetyl content within the range of 19-30%, may
  • a mixed ester such as cellulose acetate propionate or cellulose acetate butyrate
  • a tar-hydrolyzed cellulose ester having substantially the same degree of watersusceptlbility, may be used.
  • the mixed estecs those which are suitable are found within the range of 17-30% of It is desirable, it other esters than the acetates be used, that a major portion of the acyl content be acetyl. With cellulose esters poor in acetyl, the water-susceptibility it not as pronounced and the obtaining of uniform products, having the desired water-solubility, is more diflicult than with the higher acetyl content esters. In the case of photographic emulsions which use cellulose esters as the carrier for the silver halide, it is preferred thatthe cellulose esters employed in the baryta coating correester may be applied to the paper using a smaller solvent to solid ratio.
  • the solvent which is employed, should be of such a composition that there is little or no b1ushing; also a better bonding of the coating to the paper. is obtained if a solvent mixture is employed in which the cellulose ester is decidedly soluble.
  • the usual ingredients of the-solvent employed in the coating of paper are water and a volatile solvent, such as aceton or a watersoluble, aliphatic, inonohydroxy alcohol.
  • a minor quantity of a high boiling solvent such as methyl cellosolveor cellosolve
  • methyl cellosolveor cellosolve which are useful, are methyl, ethyl, normal
  • the amount of solids in the-dispersion dep on one hand, as pointed out above, on the viscosity. of the cellulose ester. factor is a Som of the alcohols,
  • Example I 100 parts of ethyl alcohol and 70 parts of water are added simultaneously to 30 parts of a 10% solution of a far-hydrolyzed cellulose acetate (acetyl in a solvent mixture containing 10 parts of ethyl alcohol and 7 parts of water. This mass was Well stirred and while stirring, 50 parts of blanc fixe, dispersed in 100 parts of a mixture of equal volumes of ethyl alcohol and water, was added thereto. After thoroughly stirring, the mass was added to 70 parts of the same type of 10% cellulose acetate solution as was previously used and the mixture well stirred. This mixture contained approximately 100 parts of 10% cellulose acetate solution, 120 parts of water, 150 parts of ethyl alcohol and 50 parts of blame fixe. This dispersion was spread upon a high alpha cellulose paper forming a product upon which a non-gelatin, silver halide, photographic emulsion could be coated.
  • a far-hydrolyzed cellulose acetate acetyl in a solvent mixture
  • Example I 50 parts of acetone and 50 parts of water were added simultaneously to parts of farhydrolyzed cellulose acetate propionat (17% acetyl and 9% propionyl) in a solvent mixture consisting of equal parts of acetone and water. The mass was well stirred and a mixture of parts of blanc fixe dispersed in 50 parts of acetone and 50 parts of water was added thereto. After a thoroughstirring the mass was added to 70 grams of the same type of 10% cellulose acetate propionate solution, as was first used, and the mixture was well stirred. The mixture was spread upon paper forming a product upon which a non-gelatin photographic emulsion could be coated.
  • the far-hydrolyzed cellulose esters which are employed in preparing baryta coatings in accordance with my invention, may be esters prepared in accordance with the disclosure of Fordyce Patent No. 2,129,052, the hydrolysis being terminated before the point of water solubility is reached.
  • the photographic papers, prepared in accordance with my invention, have been found to give clear images and there is no bleeding of the sensitizing dye into the baryta coating even on standing.
  • a gelatin photographic emulsion may be coated over the baryta coating of my invention.
  • my invention is parhaving thereon a coating of.barium sulfate mixed with cellulose acetate having an acetyl content 15 of 19-30% and an overcoating thereover of a photographic silver halide emulsion.
  • a photographic paper comprising paper having thereon a coating of barium sulfate mixed with a water-susceptible lower fatty acid ester of 20 cellulose having an acyl content of 19-30% and an overcoating thereover of a photographic emulsion composed of silver halide and a farhydrolyzed cellulose ester.
  • a photographic paper comprising paper as having thereon a coating of barium sulfate mixed with a cellulose acetate having an acetyl content of 19-30% and an overcoating thereover of a photographic emulsion composed of silver halide carried by a far-hydrolyzed cellulose acetate.
  • a photographic paper comprising paper having thereon a coating of barium sulfate mixed with a water-susceptible lower fatty acid ester of cellulose having an acyl content of approximately 25% and an overcoating thereover 3d of a photographic emulsion composed of silver halide and a far-hydrolyzedcellulose ester.
  • a paper adapted to support a photographic emulsion on at least one side which comprises paper containing a coating on that side essende, tially consisting of barium sulfate and a watersusceptible lower fatty acid ester of cellulose having an acyl content of 19-30% so as to pre-- vent the passage of impurities and dye materials to or from the thus coated paper.
  • a paper adapted to support a photographic emulsion on at least one side which comprises paper having a coating on that side essentially consisting of barium sulfate and cellulose acetate having an acetyl content of 19-30% so as to 60 terials to or from the thus coated, paper.
  • a paper adapted to support a photographic emulsion on at least one side which comprises paper having a coating onthat side essentially consisting of barium sulfate and a water-susceptible lower fatty acid ester of cellulose having an acyl content of approximately 25%.
  • a composition for preparing baryta coats ings.on paper whereby the paper is prepared for an overcoatingof a photographic emulsion which comprises blanc fixe dispersed in a solution of a, water-susceptible lower fatty acid ester of cellulose having an acid content of 19-30% in a mixture of water and a volatile solvent.
  • a composition for preparing baryta coatings on paper whereby the paper is prepared for an overcoating of a photographic emulsion which comprises blano fixe dispersed in a solution of cellulose acetate haying'an acetyl content of 19-30% in a liquid comprising a mixture of water and a volatile solvent.
  • a composition for preparing baryta coat-- ings on paper whereby the paper is prepared for an overcoating of a photographic emulsion which comprises blanc fixe dispersed in a solution of a water-susceptible lower fatty acid ester of cellulose having an acyl content of 19-30% in a mixture of water and acetone.
  • a method of preparing paper having use as a support for silver halide emulsions on at least one side which comprises spreading on that side a dispersion of barium sulfatein a solution of a water-susceptible lower fatty acid ester of cellulose having an acyl content of 19-. 30%, the liquid portion comprising a mixture of water and a volatile solvent so as to prevent the passage of impurities and dye materials to or from the thus coated paper.
  • a method of preparing paper for use as a support for silver halide emulsions on at least one side which comprises spreading on that side a dispersion of barium sulfate in a solution of cellulose acetate having an acetyl content of 19-30%, the liquid portion comprising a mixture of water and volatile solvent so as to prevent the passage of impurities and dye materials to or from the thus coated paper.
  • a method of preparing paper for use as a support for silver halide emulsions on at least one side which comprises spreading on that side a dispersion of barium sulfate in a solution of a water-susceptible cellulose, acetate propionate', the liquid portion comprising a mixture of water and a volatile solvent so as to prevent the passage of impurities and dye materials to or from the thus coated paper.

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Paper (AREA)
  • Color Printing (AREA)
US348014A 1940-07-27 1940-07-27 Manufacture of paper for photographic purposes Expired - Lifetime US2346008A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US348013A US2358056A (en) 1940-07-27 1940-07-27 Manufacture of paper for photographic purposes
US348014A US2346008A (en) 1940-07-27 1940-07-27 Manufacture of paper for photographic purposes
DEK161664D DE740796C (de) 1940-07-27 1941-07-09 Verfahren zur Herstellung von Barytagen auf Papieren fuer photographische Zwecke
FR897811D FR897811A (fr) 1940-07-27 1943-09-03 Procédé de fabrication des papiers photographiques
FR897960D FR897960A (fr) 1940-07-27 1943-09-09 Perfectionnement aux procédés de fabrication des papiers photographiques

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US348013A US2358056A (en) 1940-07-27 1940-07-27 Manufacture of paper for photographic purposes
US348014A US2346008A (en) 1940-07-27 1940-07-27 Manufacture of paper for photographic purposes

Publications (1)

Publication Number Publication Date
US2346008A true US2346008A (en) 1944-04-04

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US348014A Expired - Lifetime US2346008A (en) 1940-07-27 1940-07-27 Manufacture of paper for photographic purposes
US348013A Expired - Lifetime US2358056A (en) 1940-07-27 1940-07-27 Manufacture of paper for photographic purposes

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Application Number Title Priority Date Filing Date
US348013A Expired - Lifetime US2358056A (en) 1940-07-27 1940-07-27 Manufacture of paper for photographic purposes

Country Status (3)

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US (2) US2346008A (de)
DE (1) DE740796C (de)
FR (2) FR897811A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2494053A (en) * 1943-03-22 1950-01-10 Eastman Kodak Co Photolithographic printing materials
US3015537A (en) * 1956-04-26 1962-01-02 Eastman Kodak Co Paper having improved characteristics and its preparation

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2725296A (en) * 1951-09-14 1955-11-29 Eastman Kodak Co Two-layer integral negative positive photographic material
BE618832A (de) * 1961-06-14
JPS5659231A (en) * 1979-10-02 1981-05-22 Fuji Photo Film Co Ltd Silver halide color photographic material
EP0553339B1 (de) * 1991-08-19 1997-12-17 Eastman Kodak Company Photografisches papier mit geringer sauerstoffdurchlässigkeit
US5576152A (en) * 1994-08-26 1996-11-19 Eastman Kodak Company Photographic paper formed with low molecular weight polyvinyl alcohol having low oxygen permeability

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE677379C (de) * 1937-10-08 1939-06-24 I G Farbenindustrie Akt Ges Verfahren zur Herstellung von Papier, Karton oder Pappe mit einer zum Bedrucken besonders geeigneten Oberflaeche

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2494053A (en) * 1943-03-22 1950-01-10 Eastman Kodak Co Photolithographic printing materials
US3015537A (en) * 1956-04-26 1962-01-02 Eastman Kodak Co Paper having improved characteristics and its preparation

Also Published As

Publication number Publication date
FR897960A (fr) 1945-04-06
US2358056A (en) 1944-09-12
DE740796C (de) 1944-02-23
FR897811A (fr) 1945-04-03

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