GB1479290A - Photographic products and processes for forming silver and additive colour transparencies - Google Patents

Photographic products and processes for forming silver and additive colour transparencies

Info

Publication number
GB1479290A
GB1479290A GB32942/74A GB3294274A GB1479290A GB 1479290 A GB1479290 A GB 1479290A GB 32942/74 A GB32942/74 A GB 32942/74A GB 3294274 A GB3294274 A GB 3294274A GB 1479290 A GB1479290 A GB 1479290A
Authority
GB
United Kingdom
Prior art keywords
layer
grains
silver halide
silver
projected area
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
GB32942/74A
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.)
Polaroid Corp
Original Assignee
Polaroid 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 Polaroid Corp filed Critical Polaroid Corp
Publication of GB1479290A publication Critical patent/GB1479290A/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
    • G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
    • G03C8/02—Photosensitive materials characterised by the image-forming section
    • G03C8/04—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of inorganic or organo-metallic compounds derived from photosensitive noble metals
    • G03C8/06—Silver salt diffusion transfer
    • 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
    • G03C8/30—Additive processes using colour screens; Materials therefor; Preparing or processing such materials

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

1479290 Photographic silver salt diffusion transfer material POLAROID CORP 25 July 1974 [27 July 1973] 32942/74 Heading G2C [Also in Division C3] A transparent photo-sensitive element comprises (a) a transparent support carrying (b) a photo-sensitive silver halide emulsion layer, the silver halide grains of which being predominantly homogeneous in crystal diameter and the sum of the projected areas of the grains, i.e. the sum of the projected areas of the individual grains minus any overlapping projected area of overlapping grains, being not more than 50% of the surface area of the emulsion layer and (c) a silver receptive layer. Layer (b) may be free of overlapping silver halide grains. The silver halide grains may have a mean diameter of 0À7-1À5 microns, preferably 0À7-1À0 micron. Layer (b) may contain 90-125 mg/ft<SP>2</SP> silver preferably 100 mg/ft<SP>2</SP> silver, and may comprise a substituted halide silver halide emulsion, see Ex. 1-4 and 6. The silver halide grains may have a mean projected area of 0À6 square micron, at least 90% of the grains having a projected area of 0À5-1À5 times the mean projected area. The dispersion number of the grain size frequency distribution curve may be 0À40 or less. The transparent support may carry a light-transmitting screen e.g. a multi-colour screen, see Ex. 2-6. Layer (c) may be 0À1-0À3 micron thick. A permeable polymer layer e.g. a gelatine layer may be coated over layer (b). In Example 6 processing is effected in the presence of N-benzyl-α-picolinium bromide which keeps the maximum density of the developed negative low particularly where the principal developing agent is an α#-enediol e.g. tetramethyl reductic acid. Examples 1 and 4 describe preparations of substituted halide silver halide emulsions and Example 5 describes the preparation of the homogeneous grain size silver halide emulsion.
GB32942/74A 1973-07-27 1974-07-25 Photographic products and processes for forming silver and additive colour transparencies Expired GB1479290A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US383196A US3894871A (en) 1973-07-27 1973-07-27 Photographic products and processes for forming silver and additive color transparencies

Publications (1)

Publication Number Publication Date
GB1479290A true GB1479290A (en) 1977-07-13

Family

ID=23512127

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32942/74A Expired GB1479290A (en) 1973-07-27 1974-07-25 Photographic products and processes for forming silver and additive colour transparencies

Country Status (9)

Country Link
US (1) US3894871A (en)
JP (1) JPS5852212B2 (en)
BE (1) BE818182A (en)
CA (1) CA1031203A (en)
DE (1) DE2436103A1 (en)
FR (1) FR2238957B1 (en)
GB (1) GB1479290A (en)
IT (1) IT1016960B (en)
NL (1) NL181463C (en)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990895A (en) * 1974-04-23 1976-11-09 Polaroid Corporation Silver halide, color screen elements and their use in forming negative color images and diffusion transfer positive silver images
US4304835A (en) * 1976-01-14 1981-12-08 Polaroid Corporation Image receiving elements
US4168166A (en) * 1977-11-09 1979-09-18 Polaroid Corporation Photographic processing composition comprising borate
US4139382A (en) * 1977-12-27 1979-02-13 Polaroid Corporation Photographic sound reproduction using silver diffusion transfer
US4204869A (en) * 1978-04-04 1980-05-27 Polaroid Corporation Method for forming noble metal silver precipitating nuclei
US4186013A (en) * 1978-04-04 1980-01-29 Polaroid Corporation Silver diffusion transfer receiving layer comprising HEC and gelatin
US4186015A (en) * 1978-04-04 1980-01-29 Polaroid Corporation Silver diffusion transfer receiving layer comprising gelatin and polyvinyl alcohol
US4212527A (en) * 1978-12-15 1980-07-15 Polaroid Corporation Photographic film assemblage
JPS55146452A (en) * 1979-05-02 1980-11-14 Mitsubishi Paper Mills Ltd Lithographic printing material and processing solution for it
US4247617A (en) * 1979-05-11 1981-01-27 Polaroid Corporation Silver diffusion transfer film unit transparency
US4297429A (en) * 1979-06-18 1981-10-27 Mitsubishi Paper Mills, Ltd. Photographic material and diffusion transfer processing solution for making printing plates and method for making printing plates
US4324853A (en) * 1979-07-18 1982-04-13 Polaroid Corporation Photographic processing composition containing polyol
US4282307A (en) * 1979-10-01 1981-08-04 Polaroid Corporation Method for forming noble metal silver precipitating nuclei
US4281056A (en) * 1979-10-01 1981-07-28 Polaroid Corporation Method for forming noble metal silver precipitating nuclei
US4259115A (en) * 1979-12-31 1981-03-31 Polaroid Corporation Method for forming silver precipitating nuclei
US4259114A (en) * 1979-12-31 1981-03-31 Polaroid Corporation Method for forming silver precipitating nuclei
US4259116A (en) * 1979-12-31 1981-03-31 Polaroid Corporation Method for forming silver precipitating nuclei
US4366235A (en) * 1981-02-17 1982-12-28 Polaroid Corporation Photosensitive element and method of preparing same
US4425425A (en) 1981-11-12 1984-01-10 Eastman Kodak Company Radiographic elements exhibiting reduced crossover
US4414304A (en) * 1981-11-12 1983-11-08 Eastman Kodak Company Forehardened high aspect ratio silver halide photographic elements and processes for their use
US4439520A (en) * 1981-11-12 1984-03-27 Eastman Kodak Company Sensitized high aspect ratio silver halide emulsions and photographic elements
US4434226A (en) 1981-11-12 1984-02-28 Eastman Kodak Company High aspect ratio silver bromoiodide emulsions and processes for their preparation
US4433048A (en) * 1981-11-12 1984-02-21 Eastman Kodak Company Radiation-sensitive silver bromoiodide emulsions, photographic elements, and processes for their use
US4435501A (en) 1981-11-12 1984-03-06 Eastman Kodak Company Controlled site epitaxial sensitization
US4478929A (en) * 1982-09-30 1984-10-23 Eastman Kodak Company Dye image transfer film unit with tabular silver halide
US4425426A (en) 1982-09-30 1984-01-10 Eastman Kodak Company Radiographic elements exhibiting reduced crossover
US4504570A (en) * 1982-09-30 1985-03-12 Eastman Kodak Company Direct reversal emulsions and photographic elements useful in image transfer film units
US4530898A (en) * 1984-02-29 1985-07-23 Polaroid Corporation Photographic products and processes providing a negative image
JPS6225649A (en) * 1985-07-25 1987-02-03 日産車体株式会社 Structural panel and its production
US4995985A (en) * 1989-04-04 1991-02-26 The United States Of America As Represented By The United States Department Of Energy Gel bead composition for metal adsorption
EP0690343B1 (en) * 1994-06-27 2004-04-14 FERRANIA S.p.A. Photographic silver halide developer composition and process for forming photographic silver images
EP0692736A1 (en) * 1994-07-12 1996-01-17 Minnesota Mining And Manufacturing Company Processing machine for photographic elements
US6303262B1 (en) * 1998-06-18 2001-10-16 Mitsubishi Paper Mills Ltd. Photomask material, photomask and methods for the production thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB635841A (en) * 1947-05-13 1950-04-19 Kodak Ltd Improvements in photographic silver halide emulsions
US2944894A (en) * 1955-09-28 1960-07-12 Polaroid Corp Photographic processes utilizing screen members
US3615520A (en) * 1968-06-13 1971-10-26 Polaroid Corp Novel photographic products and processes
GB1310922A (en) * 1969-04-16 1973-03-21 Mitsubishi Paper Mills Ltd Silver complex salt diffusion transfer process
BE758077A (en) * 1969-12-31 1971-04-27 Polaroid Corp PHOTOGRAPHIC METHODS AND PRODUCTS FOR COLOR REPRODUCTION BY ADDITION
US3697271A (en) * 1971-04-16 1972-10-10 Polaroid Corp Novel photographic products and processes for color diffusion transfer utilizing silver halide emulsions with specific proportions of average halide grain size

Also Published As

Publication number Publication date
NL181463B (en) 1987-03-16
FR2238957A1 (en) 1975-02-21
DE2436103A1 (en) 1975-02-06
US3894871A (en) 1975-07-15
NL181463C (en) 1987-08-17
AU7170274A (en) 1976-01-29
JPS5050925A (en) 1975-05-07
DE2436103C2 (en) 1987-02-12
NL7410049A (en) 1975-01-29
FR2238957B1 (en) 1978-01-20
IT1016960B (en) 1977-06-20
CA1031203A (en) 1978-05-16
JPS5852212B2 (en) 1983-11-21
BE818182A (en) 1974-11-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19940724