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GB1287547A - Method of processing photographic silver halide material - Google Patents

Method of processing photographic silver halide material

Info

Publication number
GB1287547A
GB1287547A GB24738/71A GB2473871A GB1287547A GB 1287547 A GB1287547 A GB 1287547A GB 24738/71 A GB24738/71 A GB 24738/71A GB 2473871 A GB2473871 A GB 2473871A GB 1287547 A GB1287547 A GB 1287547A
Authority
GB
United Kingdom
Prior art keywords
silver halide
development
black
dot
emulsion layer
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
GB24738/71A
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
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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Publication of GB1287547A publication Critical patent/GB1287547A/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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/29—Development processes or agents therefor
    • 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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/40—Chemically transforming developed images
    • G03C5/44—Bleaching; Bleach-fixing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/15—Lithographic emulsion

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

1287547 Development of black-and-white negative silver halide photographic material FUJI PHOTO FILM CO Ltd 19 April 1971 [16 March 1970] 24738/71 Heading G2C An exposed black-and-white negative photographic silver halide material is developed, partially bleached with a solution containing an oxidizing agent and an inorganic halide at a pH insufficient to completely dissolve or oxidize the silver and then given a second development in a black-and-white developer. The first developer may comprise hydroquinone and sodium sulphiteparaformaldehyde adduct and may contain ascorbic acid and/or sodium sulphite (with development). The pH of the bleaching solution is preferably not less than 1. In the case of dot images "dot etching" is not required after development, since the quality of the dot image is improved to such an extent that a sharp printed image may be obtained, and also silver halide may be saved by thinning the emulsion layer or by decreasing the content of silver halide in the emulsion layer,
GB24738/71A 1970-03-16 1971-04-19 Method of processing photographic silver halide material Expired GB1287547A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45022178A JPS5023615B1 (en) 1970-03-16 1970-03-16

Publications (1)

Publication Number Publication Date
GB1287547A true GB1287547A (en) 1972-08-31

Family

ID=12075528

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24738/71A Expired GB1287547A (en) 1970-03-16 1971-04-19 Method of processing photographic silver halide material

Country Status (4)

Country Link
US (1) US3762923A (en)
JP (1) JPS5023615B1 (en)
FR (1) FR2084666A5 (en)
GB (1) GB1287547A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4113489A (en) * 1972-03-01 1978-09-12 Fuji Photo Film Co., Ltd. Method of forming photographic line and half-tone images
US4191575A (en) * 1972-12-07 1980-03-04 Philip A. Hunt Chemical Corp. Two-step photographic processing of black and white images which enhances the images by controlled bleaching during fixing immediately following development and which produces black and white images with reduced density in low density areas
US4172728A (en) * 1977-12-16 1979-10-30 E. I. Du Pont De Nemours And Company High contrast continuous tone developer and process of use
JPH03187155A (en) * 1989-12-15 1991-08-15 Fuji Elelctrochem Co Ltd Spiral-type nonaqueous electrolyte battery

Also Published As

Publication number Publication date
DE2112530B2 (en) 1976-02-12
US3762923A (en) 1973-10-02
FR2084666A5 (en) 1971-12-17
DE2112530A1 (en) 1971-10-14
JPS5023615B1 (en) 1975-08-08

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee