FR2320592A1 - Homogeneous developer mixt. prepn. - by pre-treating developer with soln. of sugar sodium sulphite boric acid and aniline dye (CS290376) - Google Patents

Homogeneous developer mixt. prepn. - by pre-treating developer with soln. of sugar sodium sulphite boric acid and aniline dye (CS290376)

Info

Publication number
FR2320592A1
FR2320592A1 FR7524726A FR7524726A FR2320592A1 FR 2320592 A1 FR2320592 A1 FR 2320592A1 FR 7524726 A FR7524726 A FR 7524726A FR 7524726 A FR7524726 A FR 7524726A FR 2320592 A1 FR2320592 A1 FR 2320592A1
Authority
FR
France
Prior art keywords
developer
soln
boric acid
mixt
mixing
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
FR7524726A
Other languages
French (fr)
Other versions
FR2320592B1 (en
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.)
FABRIKA KHIMFOTO
Original Assignee
FABRIKA KHIMFOTO
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 FABRIKA KHIMFOTO filed Critical FABRIKA KHIMFOTO
Priority to FR7524726A priority Critical patent/FR2320592B1/en
Publication of FR2320592A1 publication Critical patent/FR2320592A1/en
Application granted granted Critical
Publication of FR2320592B1 publication Critical patent/FR2320592B1/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
    • G03C5/264—Supplying of photographic processing chemicals; Preparation or packaging thereof
    • G03C5/265—Supplying of photographic processing chemicals; Preparation or packaging thereof of powders, granulates, tablets

Landscapes

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

Abstract

A process for prepg. a developer as a homogeneous mixt. for processing black and white cinematographic materials, by mixing (a) developer substances, e.g. metal with hydroquinone or hydroquinone with phenidone or with Me-phenidone, with (b) preservatives, e.g. anhydrous Na sulphite or Na- or K metabisulphite, (c) accelerators, e.g. crystalline borax and (d) anti-fogging agents, e.g. KBr. Before mixing developer substances (A) with the other components (b, c, d) they are treated with a soln. (I) of sugar, anhydrous Na sulphite, boric acid and aniline dye in distilled water. After mixing all components, compsn. is dried, e.g. at 30-50 degrees C, or by exposure to air until pulverulent. Pre-treatment with (I) improves water-solubility at 10-70 degrees C, compsns. have low toxicity; improved actinism, and fine grain, reduced tendency to fogging, tanning activity, compensating properties, improved storage-stability, requiring no hermetic and ligh-impermeable packing, improved resolving power and reduced consumption of developer. Developer soln. need be neither filtered nor left to settle.
FR7524726A 1975-08-07 1975-08-07 PROCESS FOR PREPARING A DEVELOPER IN THE FORM OF A SINGLE COMPOSITION FOR THE TREATMENT OF PHOTOGRAPHIC AND CINEMATOGRAPHIC EMULSIONS IN BLACK AND WHITE Expired FR2320592B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7524726A FR2320592B1 (en) 1975-08-07 1975-08-07 PROCESS FOR PREPARING A DEVELOPER IN THE FORM OF A SINGLE COMPOSITION FOR THE TREATMENT OF PHOTOGRAPHIC AND CINEMATOGRAPHIC EMULSIONS IN BLACK AND WHITE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7524726A FR2320592B1 (en) 1975-08-07 1975-08-07 PROCESS FOR PREPARING A DEVELOPER IN THE FORM OF A SINGLE COMPOSITION FOR THE TREATMENT OF PHOTOGRAPHIC AND CINEMATOGRAPHIC EMULSIONS IN BLACK AND WHITE

Publications (2)

Publication Number Publication Date
FR2320592A1 true FR2320592A1 (en) 1977-03-04
FR2320592B1 FR2320592B1 (en) 1977-12-16

Family

ID=9158909

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7524726A Expired FR2320592B1 (en) 1975-08-07 1975-08-07 PROCESS FOR PREPARING A DEVELOPER IN THE FORM OF A SINGLE COMPOSITION FOR THE TREATMENT OF PHOTOGRAPHIC AND CINEMATOGRAPHIC EMULSIONS IN BLACK AND WHITE

Country Status (1)

Country Link
FR (1) FR2320592B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2605116A1 (en) * 1986-10-09 1988-04-15 Du Pont PROCESS FOR PREPARING A DRY POWDER PHOTOGRAPHIC DEVELOPER AND POWDER OBTAINED THEREBY

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2605116A1 (en) * 1986-10-09 1988-04-15 Du Pont PROCESS FOR PREPARING A DRY POWDER PHOTOGRAPHIC DEVELOPER AND POWDER OBTAINED THEREBY

Also Published As

Publication number Publication date
FR2320592B1 (en) 1977-12-16

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Legal Events

Date Code Title Description
ST Notification of lapse