EP0446457A3 - Alkaline black-and-white photographic developer - Google Patents

Alkaline black-and-white photographic developer Download PDF

Info

Publication number
EP0446457A3
EP0446457A3 EP19900124427 EP90124427A EP0446457A3 EP 0446457 A3 EP0446457 A3 EP 0446457A3 EP 19900124427 EP19900124427 EP 19900124427 EP 90124427 A EP90124427 A EP 90124427A EP 0446457 A3 EP0446457 A3 EP 0446457A3
Authority
EP
European Patent Office
Prior art keywords
photographic developer
white photographic
alkaline black
alkaline
black
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.)
Granted
Application number
EP19900124427
Other versions
EP0446457B1 (en
EP0446457A2 (en
Inventor
Carlo Marchesano
Carlo Illuminati
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing 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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of EP0446457A2 publication Critical patent/EP0446457A2/en
Publication of EP0446457A3 publication Critical patent/EP0446457A3/en
Application granted granted Critical
Publication of EP0446457B1 publication Critical patent/EP0446457B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G03C5/305—Additives other than developers
    • G03C5/3053—Tensio-active agents or sequestering agents, e.g. water-softening or wetting agents

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
EP90124427A 1990-03-12 1990-12-17 Alkaline black-and-white photographic developer Expired - Lifetime EP0446457B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1964590 1990-03-12
IT19645A IT1240596B (en) 1990-03-12 1990-03-12 ALKALINE PHOTOGRAPHIC DEVELOPER IN BLACK AND WHITE

Publications (3)

Publication Number Publication Date
EP0446457A2 EP0446457A2 (en) 1991-09-18
EP0446457A3 true EP0446457A3 (en) 1992-02-26
EP0446457B1 EP0446457B1 (en) 1996-10-30

Family

ID=11160053

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90124427A Expired - Lifetime EP0446457B1 (en) 1990-03-12 1990-12-17 Alkaline black-and-white photographic developer

Country Status (4)

Country Link
EP (1) EP0446457B1 (en)
JP (1) JP2989289B2 (en)
DE (1) DE69029032T2 (en)
IT (1) IT1240596B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5389502A (en) * 1994-02-08 1995-02-14 Eastman Kodak Company Hardening developer for silver halide photography and development method
JP3449128B2 (en) * 1996-08-30 2003-09-22 信越半導体株式会社 Single crystal growth method
DE19644226A1 (en) * 1996-10-24 1998-04-30 Agfa Gevaert Ag Fixing bath for processing silver halide photographic materials
DE10257939A1 (en) * 2002-12-12 2004-06-24 Herbert Hafner Photographic developer bath for positive and negative processes contains reducing sugars such as fructose in combination with ascorbic acid as developer chemicals

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3994730A (en) * 1972-09-22 1976-11-30 Agfa-Gevaert, A.G. Photographic color developer mixture
US4264716A (en) * 1979-09-10 1981-04-28 Eastman Kodak Company Photographic color developer compositions
EP0136582A2 (en) * 1983-09-20 1985-04-10 Minnesota Mining And Manufacturing Company Developer compositions for silver halide photographic materials
EP0286874A1 (en) * 1987-04-13 1988-10-19 Minnesota Mining And Manufacturing Company Developer compositions for silver halide photographic materials
US4810622A (en) * 1986-07-02 1989-03-07 Fuji Photo Film, Co. Ltd. Method for processing silver halide photographic material with an alkaline black and white developer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0307867A3 (en) * 1987-09-14 1990-08-08 Konica Corporation Light-sensitive silver halide photographic material having superior sharpness and feasible for ultra-rapid processing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3994730A (en) * 1972-09-22 1976-11-30 Agfa-Gevaert, A.G. Photographic color developer mixture
US4264716A (en) * 1979-09-10 1981-04-28 Eastman Kodak Company Photographic color developer compositions
EP0136582A2 (en) * 1983-09-20 1985-04-10 Minnesota Mining And Manufacturing Company Developer compositions for silver halide photographic materials
US4810622A (en) * 1986-07-02 1989-03-07 Fuji Photo Film, Co. Ltd. Method for processing silver halide photographic material with an alkaline black and white developer
EP0286874A1 (en) * 1987-04-13 1988-10-19 Minnesota Mining And Manufacturing Company Developer compositions for silver halide photographic materials

Also Published As

Publication number Publication date
DE69029032D1 (en) 1996-12-05
IT9019645A1 (en) 1991-09-12
JP2989289B2 (en) 1999-12-13
IT1240596B (en) 1993-12-17
EP0446457B1 (en) 1996-10-30
JPH04219753A (en) 1992-08-10
EP0446457A2 (en) 1991-09-18
DE69029032T2 (en) 1997-03-06
IT9019645A0 (en) 1990-03-12

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