US3021214A - Waterproof paper negative - Google Patents

Waterproof paper negative Download PDF

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Publication number
US3021214A
US3021214A US721783A US72178358A US3021214A US 3021214 A US3021214 A US 3021214A US 721783 A US721783 A US 721783A US 72178358 A US72178358 A US 72178358A US 3021214 A US3021214 A US 3021214A
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United States
Prior art keywords
paper
coating
negative
photographic
styrene
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
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US721783A
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English (en)
Inventor
Jr Cornelius J Murphy
George F L Wood
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Eastman Kodak Co
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Eastman Kodak Co
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Filing date
Publication date
Priority to BE590105D priority Critical patent/BE590105A/xx
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to US721783A priority patent/US3021214A/en
Priority to FR824771A priority patent/FR1254388A/fr
Application granted granted Critical
Publication of US3021214A publication Critical patent/US3021214A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
    • G03C8/42—Structural details
    • G03C8/52—Bases or auxiliary layers; Substances therefor

Definitions

  • Adhesion of a photographic emulsion to latex coated paper is a problem with many of the papers which are known, and for that reason, these papers would be unsatisfactory for use as a paper negative in a diffusion type photographic process.
  • One object of this invention is to provide a water-proof paper negative for use in a diffusion type photographic process. Another object is to provide a pigmented waterproof photographic paper base using a latex based coating composition. A further object is to provide a coating composition which water-proofs paper base and provides good adhesion to a light sensitive silver halide emulsion.
  • the above objects are obtained by coating a mixture of a styrene-butadiene copolyrner and polystyrene mixed with casein, carbon black and titanium dioxide. This coating is then overcoated with a gelatino-silver halide emulsion.
  • the exposed paper is contacted against the paper positive with the developer solution in jelly form between the two contacting surfaces.
  • the single figure is a sectional view of a photographic paper negative containing a photographic emulsion, a coating comprising titanium dioxide, carbon black, a styrene-butadiene copolymer, polystyrene and casein.
  • the base In order for a paper negative to be satisfactory for use in the diffusion type process, the base should have a maximum Cobb size value of 0.10 gram. Below in Table I is a list of Cobb size values for various bases.
  • the Cobb size values for various bases are expressed in terms of the number of grams of water absorbed by 100 square centimeters of base surface in 5 minutes.
  • the above bases a-e were measured with a pH of 7.
  • the paper negative base f was tested with a water solution at a pH of 12 which is the pH of the jelly developer used in practice. These conditions are more severe than plain water and values using plain water on the base would be slightly lower than those reported above.
  • the proportions of total styrene and butadiene in the latex are:
  • Resins containing styrene-butadiene copolymers which can be used are those with butadiene-styrene copolymer ratios of :20,.70:30, 67:30, 65:35 and 60:40..
  • a roll of 19.5 lbs. per 1,000 sq. ft. photographic base stock was coated with a 20 g. per sq. meter coat of a pigmented resin latex coating.
  • the coating was prepared by dispersing 55 g. titanium dioxide, 0.61 g. of carbon black and 13.1 g. casein in 191 g. water. To this dispersion was added 238 g. of a latex mixture containing 145 g. styrene-butadiene resin latex combination (60:40: of butadienezstyrene) and 93 g. polystyrene resin latex. After mixing the latex with the pigment and the casein, the mixture was coated on the surface of the paper.
  • the resin latex coating after drying was passed in front of a bank of infrared heaters at such a rate as to maintain the coated paper at a temperature of 290 F. for /2 minute in order to fuse the surface of the coating.
  • the 238 g. of latex mixture refers to the total dry solids.
  • the styrene-butadiene latex is 48% solids in the dispersion and the polystyrene is 49% solids.
  • the coated paper having the fused latex coating thereon was cooled and a panchromatic sensitized gelatino silver halide emulsion was coated over the waterproofed paper base.
  • the sensitized negative paper was then exposed and developed while being contacted against the surface of a paper positive having thereon a photo sensitive layer and containing therein a suitable nucleating agent.
  • the developer was a jelly type developer having a pH of about 12.
  • the image transferred from the negative to the positive indicated that better resolving power was obtained than when using a white paper negative and also better than that obtained using a similar paper negative with gelatin as the binder instead of the polystyrenestyrene-butadiene resin latex.
  • the waterproof coating before coating with the silver halide emulsion had a reflection density of 0.57.
  • the titanium dioxide is treated with a wetting agent and dispersed in water prior to the addition of the vehicles (casein and latex). Carhon black is then added.
  • a casein solution is prepared at a temperature of 160 F. and added to the titanium dioxide dispersion, after which the styrene-butadiene copolymer latex and polystyrene latex can be added either simultaneously or separately, although it is preferred to add the styrene-butadiene latex prior to adding the polystyrene.
  • the coating may be applied using various conventional coating methods such as the dip coater, brush coater, air-brush coater (or air-knife coater), extrusion or hopper coater, or the like.
  • Various temperatures may be used for coating, but a temperature somewhat above room temperature, about 80 F., is preferred.
  • the paper After coating the paper, it is dried using any conventional drying equipment and then passed before radiant heaters at which time the coating is fused so that a continuous waterproof film is formed.
  • the temperature of the surface of the paper is within the range of 270- 290 F. for /2% minutes.
  • the coated paper may be calendered in order to decrease the bulk and to produce a smoother surface.
  • the temperature at which the coating is fused may be varied from 250300 C. with appropriate variations in time.
  • the amount of carbon black which we incorporate in our pigmented coating is that required to give a reflection density of 0.30 to 1.50. Within this range the negative has improved resolving power compared to coatings having reflection densities outside of this range.
  • grey paper stock is used for coating with our pigmented coating. How-- ever, White paper or paper containing a color may also be used.
  • a process for preparing a photographic paper negative for use in a photographic diffusion process comprising the successive steps of preparing a coating composition by first wetting a titanium dioxide material and dispersing it in water, adding a casein solution prepared at a temperature of about F. to the titanium dioxide dispersion, adding a latex consisting of a styrene-butadiene copolymer and polystyrene so that the solids content of the coating composition contains 44.3-49,2% of the copolymer and 28.7-31.8% polystyrene, and coating the mixtureonto a paper base, drying, fusing at a temperature of 250-300 F., cooling and coating with a photographic gelatin emulsion containing light-sensitive: silver salts.
  • a process for making a photographic paper negative for use in a photographic diffusion process comprising preparing a water dispersion of titanium dioxide, casein, carbon black, polystyrene and styrene-butadiene copolymer in which from 44.3-49.2% is a styrene butadiene resin latex and 28.7 to 31.8% polystyrene resin latex, and coating on a paper base, drying, heat treating at a temperature of 250-300 F. and coating with a photographic silver halide emulsion.
  • An aqueous coating composition comprising :15- 23% titanium dioxide, 06% carbon black, 44.3-49.2% styrene-butadiene copolymer, 28.7-31.4% polystyrene and 3.8-4.2% casein, by weight solids basis.
  • An aqueous coating composition comprising 15- 23% titanium dioxide, '0-6% carbon black, 38-42% casein, and a styrene-butadiene copolymer and polystyrene latex so that 44.3-49.2% of the coating composition is styrene-butadiene copolymer, and 28.7- 31.4% is polystyrene by weight solids basis.
  • a paper support for a photographic paper negative for use in a diffusion type photographic process comprising a paper support having thereon a coating comprising 15-23% titanium dioxide, 0-6% carbon black, 44.3- 49.2% styrene-butadiene copolymer, 28.7-31.4% polystyrene, and 38-42% casein by weight.
  • a paper support for a photographic paper negative for use in a diffusion type photographic process comprising a gray paper support having thereon a coating comprising l5-23% titanium dioxide, 0-6% carbon black, 44.349.2% styrene-butadiene copolymer, 28.731.4% polystyrene, and 3.8-4.2% casein by weight.
  • a paper support for a photographic paper negative for use in a diffusion type photographic process comprising a white paper support having thereon a coating comprising 15-23% titanium dioxide, 0-6% carbon black, 44.3-49.2% styrene-butadiene copolymer, 28.7-3l.4% polystyrene, and 38-42% casein by weight.
  • a photographic paper negative for use in a diffusion type photographic process comprising a paper sup port having thereon a coating comprising 15-23% titanium dioxide, 0-6% carbon black, 44.3-49.2% styrenebutadiene copolymer, 28.7-3l.4% polystyrene, and 38-42% casein by weight, and having coated thereon a light-sensitive silver halide emulsion.
  • a photographic negative paper for use in a diffusion type photographic process comprising a white paper support having thereon a coating comprising 1523% titanium dioxide, 0-6% carbon black, 44.3-49.2% styrenebutadiene copolymer, 28.7-31.4% polystyrene, and 3.8- 42% casein by weight and having coated thereon a lightsensitive silver halideemulsion.
  • a photographic negative paper for use in a difiusion type photographic process comprising a gray paper support having thereon a coating comprising 1523% titanium dioxide, 06% carbon black, 44.3-49.2% styrenebutadiene copolymer, 28.7-31.4% polystyrene, and 3.84.2% casein by weight and having coated thereon a light-sensitive silver halide emulsion.
  • a paper support for use in a difiusion type photographic process comprising a paper support having thereon a pigmented coating having a reflective density of 0.30 to 1.50 comprising 15-23% titanium dioxide, 0-6% carbon black, 44.349.2% styrene-butadiene copolymer, 28.7-31.4% polystyrene, and 3.8-4.2% casein by weight, and having coated thereon a light-sensitive silver halide emulsion.
  • a paper support for use in a diffusion type photographic process comprising a white paper support having thereon a pigmented coating having a reflective density of 0.30 to 1.50 comprising 15-23% titanium dioxide, 06% carbon black, 44.349.2% styrene-butadiene copolymer, 28.73l.4% polystyrene, and 3.84.2% casein, and having coated thereon a light-sensitive silver halide emulsion.
  • a paper support for use in a diffusion type photographic process comprising a gray paper support having 6 thereon a pigmented coating having a reflective density of 0.30 to 1.50 comprising 15-23% titanium dioxide, 0-6% carbon black, 44.3-49.2% styrene-butadiene copolymer, 28.731.4% polystyrene, and 3.8-4.2% casein, and having coated thereon a light-sensitive silver halide emulsion.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Paper (AREA)
US721783A 1958-03-17 1958-03-17 Waterproof paper negative Expired - Lifetime US3021214A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE590105D BE590105A (en, 2012) 1958-03-17
US721783A US3021214A (en) 1958-03-17 1958-03-17 Waterproof paper negative
FR824771A FR1254388A (fr) 1958-03-17 1960-04-20 Nouveaux papiers négatifs utilisables dans les procédés d'inversion-transfert, composition de couchage et procédé pour leur fabrication

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US721783A US3021214A (en) 1958-03-17 1958-03-17 Waterproof paper negative

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US3021214A true US3021214A (en) 1962-02-13

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3212897A (en) * 1961-01-05 1965-10-19 Eastman Kodak Co Sub coatings for bonding photographic emulsions to resinous supports
US3260602A (en) * 1962-01-04 1966-07-12 Eastman Kodak Co Resin laminated paper for photographic application
US3369901A (en) * 1964-01-16 1968-02-20 Eastman Kodak Co Coating method for wash-off solvent transfer
US3514290A (en) * 1965-04-30 1970-05-26 Agfa Gevaert Nv Wrapping paper for photographic material
US4237206A (en) * 1977-12-21 1980-12-02 Fuji Photo Film Co., Ltd. Photographic paper base with seperate reflective layer
US4384040A (en) * 1980-06-14 1983-05-17 Felix Schoeller, Jr. Waterproof photographic paper
US4548898A (en) * 1982-07-27 1985-10-22 Mitsubishi Paper Mills, Ltd. Photosensitive material for diffusion transfer with antihalation layer containing white and color pigment
US4588673A (en) * 1982-06-30 1986-05-13 Fuji Photo Film Co., Ltd. Retouchable mat film
US4871642A (en) * 1986-08-04 1989-10-03 Fuji Photo Film Co., Ltd. Light-sensitive material comprising light-sensitive layer provided on a support comprising a water resistant coating layer

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462534A (en) * 1946-03-29 1949-02-22 Du Pont Light-sensitive photographic elements
US2597087A (en) * 1951-04-09 1952-05-20 Us Rubber Co Synthetic resin coated paper
US2686764A (en) * 1951-11-09 1954-08-17 Du Pont Leather-finishing compositions containing caprolactam and a resinous polymer
US2698235A (en) * 1950-03-16 1954-12-28 Du Pont Photographic elements
US2731434A (en) * 1953-02-18 1956-01-17 Firestone Tire & Rubber Co Freeze resistant aqueous polymer-containing paint containing a hydrazine derivative as a freeze-thaw stabilizer
US2750349A (en) * 1952-10-06 1956-06-12 Rca Corp Compositions, including polystyrene and terphenyl
US2756150A (en) * 1954-11-08 1956-07-24 Eastman Kodak Co Light sensitive photographic paper and method for its production
US2784088A (en) * 1954-11-08 1957-03-05 Eastman Kodak Co Photographic paper having reduced processing curl
US2801938A (en) * 1953-05-12 1957-08-06 Du Pont Treating paper with silica sol, and product produced
US2805160A (en) * 1953-02-09 1957-09-03 Eastman Kodak Co Translucent paper

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462534A (en) * 1946-03-29 1949-02-22 Du Pont Light-sensitive photographic elements
US2698235A (en) * 1950-03-16 1954-12-28 Du Pont Photographic elements
US2597087A (en) * 1951-04-09 1952-05-20 Us Rubber Co Synthetic resin coated paper
US2686764A (en) * 1951-11-09 1954-08-17 Du Pont Leather-finishing compositions containing caprolactam and a resinous polymer
US2750349A (en) * 1952-10-06 1956-06-12 Rca Corp Compositions, including polystyrene and terphenyl
US2805160A (en) * 1953-02-09 1957-09-03 Eastman Kodak Co Translucent paper
US2731434A (en) * 1953-02-18 1956-01-17 Firestone Tire & Rubber Co Freeze resistant aqueous polymer-containing paint containing a hydrazine derivative as a freeze-thaw stabilizer
US2801938A (en) * 1953-05-12 1957-08-06 Du Pont Treating paper with silica sol, and product produced
US2756150A (en) * 1954-11-08 1956-07-24 Eastman Kodak Co Light sensitive photographic paper and method for its production
US2784088A (en) * 1954-11-08 1957-03-05 Eastman Kodak Co Photographic paper having reduced processing curl

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3212897A (en) * 1961-01-05 1965-10-19 Eastman Kodak Co Sub coatings for bonding photographic emulsions to resinous supports
US3320191A (en) * 1961-01-05 1967-05-16 Eastman Kodak Co Sub coatings for bonding photographic emulsions to resinous supports
US3260602A (en) * 1962-01-04 1966-07-12 Eastman Kodak Co Resin laminated paper for photographic application
US3369901A (en) * 1964-01-16 1968-02-20 Eastman Kodak Co Coating method for wash-off solvent transfer
US3514290A (en) * 1965-04-30 1970-05-26 Agfa Gevaert Nv Wrapping paper for photographic material
US4237206A (en) * 1977-12-21 1980-12-02 Fuji Photo Film Co., Ltd. Photographic paper base with seperate reflective layer
US4384040A (en) * 1980-06-14 1983-05-17 Felix Schoeller, Jr. Waterproof photographic paper
US4588673A (en) * 1982-06-30 1986-05-13 Fuji Photo Film Co., Ltd. Retouchable mat film
US4548898A (en) * 1982-07-27 1985-10-22 Mitsubishi Paper Mills, Ltd. Photosensitive material for diffusion transfer with antihalation layer containing white and color pigment
US4871642A (en) * 1986-08-04 1989-10-03 Fuji Photo Film Co., Ltd. Light-sensitive material comprising light-sensitive layer provided on a support comprising a water resistant coating layer

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Publication number Publication date
BE590105A (en, 2012)

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