US3884692A - Photographic support - Google Patents

Photographic support Download PDF

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Publication number
US3884692A
US3884692A US340790A US34079073A US3884692A US 3884692 A US3884692 A US 3884692A US 340790 A US340790 A US 340790A US 34079073 A US34079073 A US 34079073A US 3884692 A US3884692 A US 3884692A
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US
United States
Prior art keywords
paper
sensitive material
photographic light
polyolefin
support
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
US340790A
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English (en)
Inventor
Nobuhiko Minagawa
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co Ltd
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Filing date
Publication date
Application filed by Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
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Publication of US3884692A publication Critical patent/US3884692A/en
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D15/00—Apparatus for treating processed material
    • G03D15/02—Drying; Glazing
    • G03D15/022—Drying of filmstrips
    • 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
    • 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
    • G03C11/00—Auxiliary processes in photography
    • G03C11/16—Drying

Definitions

  • the drying of photographic papers subjected to development processing has usually been conducted by bringing the emulsion-coated surface of a non-dried photographic paper into contact with a heated, smooth metallic plate to thereby evaporate from the back of the photographic paper moisture contained in both the emulsion layer and the support paper, i.e., by so-calledferrotype drying.
  • microwave heating In microwave heating, the time'required for the temperature to rise due to thermal conduction is so small as to be negligible because microwave heating causes internal heat generation in the substance heated. In addition, microwave energy'is absorbed most efficiently by water molecules. Therefore, microwave heating can be said to be extremely advantageous as a method for drying photographic papers.
  • a photographic support comprising a polyolefin-laminated paper having on its back a coating layer of colloidal alumina.
  • the polyolefins used in this invention are polyethylene, polypropylene and mixtures thereof in any proportion.
  • polyethylene and polypropylene used may beslected from any of those in' the prior art, and their equivalents, which have been used to form polyolefin laminated papers, and the improved results of the present invention are achieved with all of such materials.
  • the polyethylene has a melt index of about 1 to about 30 and a density of about 0.91 to about 0.97
  • polypropylene has a melt index of about 0.1 to about 20 and a density of about 0.88 to about 0.91.
  • the polyolefin can be used in various thicknesses, but at thicknesses much less than .1 [J. insufficient water-proofing may be achieved, while no need exists to use a thickness much greater than 100 u.
  • Polyolefin-laminated papers are usually prepared by casting molten polyolefin onto arunning paper base, i.e., by the socalled extrusion coating method, whereby both sides of the paper are laminated or coated with polyolefin.
  • the surface of the polyolefin-laminated paper to which an emulsion will be applied can be a glossy surface, matted surface, silk-like surface, etc. depending upon the use thereof, whereas the back of the laminated paper is usually non-glossy.
  • the colloidal alumina used in the invention is fibrous alumina (hydrate) l mu to 1,000 mu, preferably 10 my. to 100 mu, in size. Processes for producing the same and the properties thereof are explained in detail in Japanese Pat. Nos. 20150/64, 14292/65 and 570/66.
  • a process for providing a coating layer of colloidal alumina on the back of a photographic support comprising a polyolefin-coated paper is specifically described below.
  • Colloidal alumina is diluted with water or an organic solvent miscible with water to prepare a coating solution.
  • concentration of colloidal alumina in the coating solution is set taking into consideration the coating amount required, the viscosity of the solution suitable for the coating method employed and the like. However, usually, the concentration of solid ingredients, i.e., alumina, is in the range of from 1 g to 50 g per 1 liter of the coating solution.
  • the additive resins can be water or organic solvent soluble resins such as polyvinyl acetate, polyvinyl alcohol, gelatin, nitrocellulose, etc.
  • the dyes can be any dye which is not decomposed at process conditions
  • the matting agents can be selected from those commonly used in the art, e.g., clay, silica, etc. and appropriate inorganic substances are water soluble compounds such as sodium chloride, sodium sulfate, potassium nitrate, etc.
  • the thus obtained coating solution containing colloidal alumina is applied to the back of a polyolefinlaminated paper by any usual coating method such as roll coating, bar coating, gravure coating, etc.
  • the colloidal alumina in an amount of not more than 1 g per 1 m of a support (exclusive of other components), generally in an amount greater than 0.05 g/m Amounts greater than 1 g/m can .be used, if desired, but no significant increase in improved results is obtained.
  • the 0.05 g/m is a more important parameter as the upper figure is nonlimiting.
  • Activation of the polyolefin surface prior to the coating of the colloidal alumina is not particularly required, but, where resin is contained in the coating solution or where especially strong adhesion between the coating layer and the polyolefin surface is required, it is preferred to activate the polyolefinlaminated surface by corona discharge or the like, e.g., corona discharge as described in British Pat. Specification Nos. 771,234; 715,914; 870,224; 989,377; 971,058; 1,005,631; 1,019,664; 1,043,703; 1,134,211 and 1,136,902; U.S. Pat. Nos.
  • the characteristics required of the thus obtained backcoating layer are: it should not be delaminated during the production or use of the photographic lightsensitive material; it should exert no harmful influence on a photographic emulsion; it should not cause sticking or adhesion to the surface emulsion layer under high humidity conditions; and it should prevent the formation of above-described'water drops and blisters.
  • the colloidal alumina coating layer in accordance with the invention satisfies all of the above-described requirements.
  • the colloidal alumina also provides the substantial merits that a pasting property (ability to adhere materials to the substrate by adhesives and a writing property, which a noncoated support does not possess, are obtained.
  • a water-proof paper is subjected to a development processing by an usual development processing as shown in FIG. 1, and the non-dried, processes waterproof paper is dried by means of a microwave heating apparatus shown in FIG. 2.
  • numeral 1 denotes a water-proof photographic paper wound as a roll and 2 denotes a development processing bath.
  • numeral 3 denotes a microwave generator
  • 4 denotes a waveguide
  • 5 denotes a water-proof photographic paper which has been subjected to development processing.
  • the water-proof photographic paper runs in the direction indicated by the arrow.
  • the microwave drying capability was rated by examining the relationship between both the oscillation power and the velocity of the microwaves traveling through the waveguide and the state of the dried surface of the water-proof photographic paper.
  • the microwaves can be of any type known to the art which provide a sufficient drying effect.
  • this range includes commercially available microwave sources, the microwaves have a frequency of about 900 MHZ to 2,500 MHz.
  • microwaves used were of a frequency of 900 MHz to 2,500 MHz.
  • Example 1 3 the polyolefins were coated by extrusion coating.
  • Example 4 the paper base was covered by preformed polypropylene films on both sides.
  • the amount of solid ingredients coated to prepare support B was 1.0 g/m To each of support A and support B was applied the same emulsion for color photographic paper to thereby prepare two water-proof color photographic papers.
  • the thus obtained water-proof color photographic papers were exposed and subjected to development processing using a standard commercial color developer and the apparatus shown in FIG. 1 and subsequently dried by means of the microwave drier shown in FIG. 2.
  • the relationship between the running rate of the water-proof photographic paper being dried and the state of the dried surface was examined while set- -Continued Potassium bromide 4 2 Water I l After developing and water-washing, the paper was fixed in the following solution for 4 min.
  • O in the line At the Back means that the back of the paper is dried, while 6 means that the back of the paper is still wet or water drops remain on the back.
  • O in the line Blister means that no blisters formed on the back of the paper, while e means that blisters formed on the back of the paper.
  • the solution was added to a 10% by weight aqueous gelatin solution containing 2 ml of a 10 weight aqueous sodium alkyl benzene sulfonate solution and then the mixture was subjected to homogenizing to emulsify.
  • Six g of the resulting emulsion was mixed with 20 g of a silver chlorobromide photographic emulsion containing about 30 g of silver bromide per 1 kg of the emulsion to provide the final emulsion.
  • This material was favorable for the magenta component image of a malti-colored photosensitive material.
  • Example II Water 8 liter (39 wt.% polyvinyl acetate and 70 wt.% water) The amount of solid ingredients coated to prepare support D was 0.3 g/m To each of support C and support D was applied the same emulsion for black-andwhite photographic paper to produce water-proof photographic papers. The thus obtained waterproof photographic papers were subjected to development processing and dried using the same apparatus as was used in Example I. In this example, the power of the microwave generator was set at 3.0 KW, and the relationship between the running rate of the water-proof photo- ALUMINA SOL-200*(colloidal alumina made by Nissan Chemicals Industries, Ltd.)
  • Table 4 Support State of dried Power of oscillation surface (KW) At the hack Q Q 0 O Blister O O O Q H At the back O O O O Blister O O O O From Table 4, it is seen that coating of alumina on the back of the support prevents the formation of blisters and, in addition, the back can be dried with micro waves of low energy.
  • a photographic light-sensitive material comprising a. a support which comprises a polyolefin-laminated paper having on its back a coating layer composed of fibrous colloidal alumina (hydrate), and
  • a photographic light-sensitive material as claimed in claim 1, wherein the coating amount of alumina is 10 more than 0.05 g/m 7.
  • a photographic light-sensitive material as claimed in claim 5, wherein the size of the alumina is from 10 12.
  • a photographic light-sensitive material as claimed in claim 1, wherein the polyolefin is polyethylenepolypropylene mixture.
  • the paper has a weight of g/m to 300 g/m and is coated on both sides with a polyolefin layer; b. a polyolefin layer is 10 to 100 ,a thick; c. the alumina has a size of 1 my. to 1,000 mu; d. the alumina is present in a layer consisting essentially of alumina in an amount of 0.05 to l g/m esthe polyethylene has a density of from about 0.91 to about 0.97 and a melt index of from about 1 to about 30; and f. the polypropylene has a density of from about 0.88 to about 0.91 and a melt index of from about 0.1

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Paper (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
US340790A 1972-03-14 1973-03-13 Photographic support Expired - Lifetime US3884692A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47025881A JPS5218020B2 (enrdf_load_stackoverflow) 1972-03-14 1972-03-14

Publications (1)

Publication Number Publication Date
US3884692A true US3884692A (en) 1975-05-20

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Country Status (5)

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US (1) US3884692A (enrdf_load_stackoverflow)
JP (1) JPS5218020B2 (enrdf_load_stackoverflow)
DE (1) DE2312674C2 (enrdf_load_stackoverflow)
FR (1) FR2176044B1 (enrdf_load_stackoverflow)
GB (1) GB1415464A (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4042398A (en) * 1975-10-20 1977-08-16 Schoeller Technical Papers, Inc. Polyolefin coated photographic base and method of producing
US4154612A (en) * 1975-07-25 1979-05-15 Fuji Photo Film Co., Ltd. Method of making silver halide photographic light-sensitive materials
US4188220A (en) * 1975-03-31 1980-02-12 Fuji Photo Film Co., Ltd. Supports for photographic paper and photographic light-sensitive material
US4243744A (en) * 1978-12-22 1981-01-06 Exxon Research & Engineering Co. Microwave curing of photoresist films
US4327174A (en) * 1975-04-11 1982-04-27 Felix Schoeller, Jr. Method of preparing a carrier material for photography
US4579781A (en) * 1982-04-07 1986-04-01 Fuji Photo Film Co., Ltd. Material for packaging light-sensitive materials
US4895792A (en) * 1986-03-17 1990-01-23 Mitsubishi Paper Mills, Ltd. Photographic light-sensitive Silver halide element with antistatic backing layer
US5348722A (en) * 1992-06-17 1994-09-20 Nec Corporation Removal of detrimental metal ions from hydrofluoric acid solution for cleaning silicon surfaces
EP0678784A1 (en) * 1994-01-24 1995-10-25 Agfa-Gevaert N.V. Method and device for the rejuvenating of a polyester film base and method of drying a processed photographic material

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54135726U (enrdf_load_stackoverflow) * 1978-03-13 1979-09-20
JPH0685059B2 (ja) * 1985-04-24 1994-10-26 コニカ株式会社 ハロゲン化銀写真感光材料
US5221555A (en) * 1991-12-12 1993-06-22 Felix Schoeller, Jr. Gmbh & Co. Kg Reverse side coating of photographic support materials
DE4101475A1 (de) * 1991-01-19 1992-07-23 Schoeller F Jun Gmbh Co Kg Beschichtungsmasse fuer die rueckseite fotografischer traegermaterialien und verfahren zu ihrer herstellung
DE4229153C2 (de) * 1992-09-01 1996-01-25 Schoeller Felix Jun Papier Schichtträger für fotografische Aufzeichnungsmaterialien

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2647835A (en) * 1948-09-29 1953-08-04 Du Pont Light-sensitive photographic element and process of coating
US3169865A (en) * 1960-07-29 1965-02-16 Eastman Kodak Co Zirconia subbed photographic paper
US3352682A (en) * 1963-09-13 1967-11-14 Ilford Ltd Photographic silver halide emulsion containing finely divided uinert particles dispersed in a synthetic colloid medium and a silver halide developer
US3520242A (en) * 1964-11-18 1970-07-14 Wiggins Teape Res Dev Coated paper products
US3525621A (en) * 1968-02-12 1970-08-25 Eastman Kodak Co Antistatic photographic elements
US3743537A (en) * 1969-10-15 1973-07-03 Fuji Photo Film Co Ltd Method of making an electrophotographic recording member
US3769020A (en) * 1971-02-11 1973-10-30 Agfa Gevaert Ag Photographic material with improved properties
US3793029A (en) * 1971-10-26 1974-02-19 Eastman Kodak Co Opaque photographic film support

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL290497A (enrdf_load_stackoverflow) * 1962-03-21

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2647835A (en) * 1948-09-29 1953-08-04 Du Pont Light-sensitive photographic element and process of coating
US3169865A (en) * 1960-07-29 1965-02-16 Eastman Kodak Co Zirconia subbed photographic paper
US3352682A (en) * 1963-09-13 1967-11-14 Ilford Ltd Photographic silver halide emulsion containing finely divided uinert particles dispersed in a synthetic colloid medium and a silver halide developer
US3520242A (en) * 1964-11-18 1970-07-14 Wiggins Teape Res Dev Coated paper products
US3525621A (en) * 1968-02-12 1970-08-25 Eastman Kodak Co Antistatic photographic elements
US3743537A (en) * 1969-10-15 1973-07-03 Fuji Photo Film Co Ltd Method of making an electrophotographic recording member
US3769020A (en) * 1971-02-11 1973-10-30 Agfa Gevaert Ag Photographic material with improved properties
US3793029A (en) * 1971-10-26 1974-02-19 Eastman Kodak Co Opaque photographic film support

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4188220A (en) * 1975-03-31 1980-02-12 Fuji Photo Film Co., Ltd. Supports for photographic paper and photographic light-sensitive material
US4327174A (en) * 1975-04-11 1982-04-27 Felix Schoeller, Jr. Method of preparing a carrier material for photography
US4154612A (en) * 1975-07-25 1979-05-15 Fuji Photo Film Co., Ltd. Method of making silver halide photographic light-sensitive materials
US4042398A (en) * 1975-10-20 1977-08-16 Schoeller Technical Papers, Inc. Polyolefin coated photographic base and method of producing
US4243744A (en) * 1978-12-22 1981-01-06 Exxon Research & Engineering Co. Microwave curing of photoresist films
US4579781A (en) * 1982-04-07 1986-04-01 Fuji Photo Film Co., Ltd. Material for packaging light-sensitive materials
US4895792A (en) * 1986-03-17 1990-01-23 Mitsubishi Paper Mills, Ltd. Photographic light-sensitive Silver halide element with antistatic backing layer
US5348722A (en) * 1992-06-17 1994-09-20 Nec Corporation Removal of detrimental metal ions from hydrofluoric acid solution for cleaning silicon surfaces
EP0678784A1 (en) * 1994-01-24 1995-10-25 Agfa-Gevaert N.V. Method and device for the rejuvenating of a polyester film base and method of drying a processed photographic material

Also Published As

Publication number Publication date
JPS5218020B2 (enrdf_load_stackoverflow) 1977-05-19
FR2176044B1 (enrdf_load_stackoverflow) 1976-05-21
FR2176044A1 (enrdf_load_stackoverflow) 1973-10-26
DE2312674A1 (de) 1973-09-27
GB1415464A (en) 1975-11-26
JPS4894417A (enrdf_load_stackoverflow) 1973-12-05
DE2312674C2 (de) 1982-05-06

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