GB1213810A - Photographic processes - Google Patents

Photographic processes

Info

Publication number
GB1213810A
GB1213810A GB58064/67A GB5806467A GB1213810A GB 1213810 A GB1213810 A GB 1213810A GB 58064/67 A GB58064/67 A GB 58064/67A GB 5806467 A GB5806467 A GB 5806467A GB 1213810 A GB1213810 A GB 1213810A
Authority
GB
United Kingdom
Prior art keywords
boron
dec
black
atoms
white
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
GB58064/67A
Inventor
Charleton Cordery Bard
Howard Walter Vogt
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak 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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB1213810A publication Critical patent/GB1213810A/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
    • G03C5/50—Reversal development; Contact processes

Landscapes

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

Abstract

1,213,810. Photographic processing. EASTMAN KODAK CO. Dec.21, 1967 [Dec.28, 1966], No.58064/67. Heading G2C. Unexposed silver-halide is rendered developable by treatment with an aqueous solution of an ionic boron compound having an anion composed only of B and H atoms and containing at least 2 boron atoms. Preferred compounds are of formula: (M<SP>c+</SP>) x (B y H z )<SP>xo-</SP> in which M<SP>c+</SP> is a positive ion of valency c, and c, x, y and z being at least 6; preferably M contains an N, S, Sb, As atom or is an alkali or alkaline earth metal ion. The solution is used in both black-and-white and colour reversal processes in place of the reversal exposure. The boron compound may be applied before development or in admixture with a developing agent. The boron compounds may themselves act as black-and-white developing agents.
GB58064/67A 1966-12-28 1967-12-21 Photographic processes Expired GB1213810A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60522066A 1966-12-28 1966-12-28

Publications (1)

Publication Number Publication Date
GB1213810A true GB1213810A (en) 1970-11-25

Family

ID=24422723

Family Applications (2)

Application Number Title Priority Date Filing Date
GB58064/67A Expired GB1213810A (en) 1966-12-28 1967-12-21 Photographic processes
GB58063/67A Expired GB1213809A (en) 1966-12-28 1967-12-21 Photographic processing materials

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB58063/67A Expired GB1213809A (en) 1966-12-28 1967-12-21 Photographic processing materials

Country Status (6)

Country Link
US (1) US3554748A (en)
BE (1) BE708563A (en)
CH (2) CH479091A (en)
DE (1) DE1597570A1 (en)
FR (1) FR1548122A (en)
GB (2) GB1213810A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4055422A (en) * 1975-07-28 1977-10-25 Minnesota Mining And Manufacturing Company Additive for inhibitor removing bath

Also Published As

Publication number Publication date
DE1597570A1 (en) 1970-09-24
GB1213809A (en) 1970-11-25
US3554748A (en) 1971-01-12
FR1548122A (en) 1968-11-29
CH484455A (en) 1970-01-15
CH479091A (en) 1969-09-30
BE708563A (en) 1968-05-02
DE1597569A1 (en) 1970-08-13

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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