GB1195526A - Photographic Reversal Process - Google Patents

Photographic Reversal Process

Info

Publication number
GB1195526A
GB1195526A GB4065/69A GB406569A GB1195526A GB 1195526 A GB1195526 A GB 1195526A GB 4065/69 A GB4065/69 A GB 4065/69A GB 406569 A GB406569 A GB 406569A GB 1195526 A GB1195526 A GB 1195526A
Authority
GB
United Kingdom
Prior art keywords
silver halide
photographic reversal
boranocarbonate
black
developed
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
GB4065/69A
Inventor
Otto Ernst
Eberhard Gunther
Heinz Meckl
Herbert Odenbach
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.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert AG
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 Agfa Gevaert AG filed Critical Agfa Gevaert AG
Publication of GB1195526A publication Critical patent/GB1195526A/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

1,195,526. Photographic reversal processing. AGFA - GEVAERT A.G. Jan. 24, 1969 [Feb. 14, 1968], No.4065/69. Heading G2C. In photographic reversal processing in which an imagewise exposed silver halide material is developed in a black-and-white developer and the remaining silver halide is subsequently fogged and developed, the second development is carried out in the presence of a boranocarbonate, e.g. of sodium or potassium, as a fogging agent. The boranocarbonate may be present in the second developer or in a bath which precedes the second development. The silver halide material may be black and white, a colour-coupler-containing colour material or a silver-dye-bleach material.
GB4065/69A 1968-02-14 1969-01-24 Photographic Reversal Process Expired GB1195526A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19681622258 DE1622258A1 (en) 1968-02-14 1968-02-14 Photographic reversal process
DEA0058182 1968-02-14

Publications (1)

Publication Number Publication Date
GB1195526A true GB1195526A (en) 1970-06-17

Family

ID=25753810

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4065/69A Expired GB1195526A (en) 1968-02-14 1969-01-24 Photographic Reversal Process

Country Status (5)

Country Link
US (1) US3563746A (en)
BE (1) BE728385A (en)
DE (1) DE1622258A1 (en)
FR (1) FR2001902A1 (en)
GB (1) GB1195526A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5952159A (en) * 1991-05-04 1999-09-14 Agfa-Gevaert Ag Method of photographic processing

Also Published As

Publication number Publication date
US3563746A (en) 1971-02-16
BE728385A (en) 1969-08-14
FR2001902A1 (en) 1969-10-03
DE1622258A1 (en) 1970-10-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees