GB1195838A - A Method of Producing Photographic Images - Google Patents

A Method of Producing Photographic Images

Info

Publication number
GB1195838A
GB1195838A GB47633/66A GB4763366A GB1195838A GB 1195838 A GB1195838 A GB 1195838A GB 47633/66 A GB47633/66 A GB 47633/66A GB 4763366 A GB4763366 A GB 4763366A GB 1195838 A GB1195838 A GB 1195838A
Authority
GB
United Kingdom
Prior art keywords
foggants
development
developer
oct
bicarbamic
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
GB47633/66A
Inventor
Jozef Frans Willems
Gerard Laurens Vanreusel
Camille Angelina Vandeputte
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 NV
Original Assignee
Agfa Gevaert NV
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 NV filed Critical Agfa Gevaert NV
Priority to GB47631/66A priority Critical patent/GB1195837A/en
Priority to GB47633/66A priority patent/GB1195838A/en
Priority to NL6713674A priority patent/NL6713674A/xx
Priority to BE704930D priority patent/BE704930A/xx
Priority to DE1597490A priority patent/DE1597490C2/en
Priority to FR125367A priority patent/FR1541559A/en
Priority to FR126065A priority patent/FR1541985A/en
Priority to DE1597493A priority patent/DE1597493C2/en
Priority to US677763A priority patent/US3565620A/en
Publication of GB1195838A publication Critical patent/GB1195838A/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
    • 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
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/485—Direct positive emulsions
    • G03C1/48538—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure
    • G03C1/48546—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure characterised by the nucleating/fogging agent
    • G03C1/48553—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure characterised by the nucleating/fogging agent the fogging agent only present in the developer

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)

Abstract

1,195,838. Processing photographic silver halide materials. GEVAERT-AGFA N. V. Oct.3, 1967 [Oct.24, 1966], No.47633/66. Heading G2C. Carbazic acid, bicarbamic acid, substituted carbazic acid and bicarbamic acids and watersoluble salts thereof are used as foggants in photographic silver halide reversal processes. They may be present in the developer used in the second development stage of a black-and-white or colour reversal process or in a processing solution with which the material is treated before the said second development, and may partially or completely replace the usual overall light exposure. Direct-positive images may be obtained by imagewise exposing an internal latent image emulsion and developing with an energetic surface developer in the presence of compounds liberating iodide or bromide ions e.g. KI, the developer containing one of the above foggants or the material being treated with a solution of one of the above foggants before the surface development.
GB47633/66A 1966-10-24 1966-10-24 A Method of Producing Photographic Images Expired GB1195838A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
GB47631/66A GB1195837A (en) 1966-10-24 1966-10-24 Method of Producing Photographic Images
GB47633/66A GB1195838A (en) 1966-10-24 1966-10-24 A Method of Producing Photographic Images
NL6713674A NL6713674A (en) 1966-10-24 1967-10-08
BE704930D BE704930A (en) 1966-10-24 1967-10-11
DE1597490A DE1597490C2 (en) 1966-10-24 1967-10-21 Process for the preparation of a direct positive photographic image
FR125367A FR1541559A (en) 1966-10-24 1967-10-23 New process for forming direct positive photographic images
FR126065A FR1541985A (en) 1966-10-24 1967-10-23 Photographic processing liquids and methods for forming photographic images
DE1597493A DE1597493C2 (en) 1966-10-24 1967-10-24 Process for the preparation of a direct positive photographic image
US677763A US3565620A (en) 1966-10-24 1967-10-24 Photographic processing liquids and method of producing photographic images

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB47631/66A GB1195837A (en) 1966-10-24 1966-10-24 Method of Producing Photographic Images
GB47633/66A GB1195838A (en) 1966-10-24 1966-10-24 A Method of Producing Photographic Images

Publications (1)

Publication Number Publication Date
GB1195838A true GB1195838A (en) 1970-06-24

Family

ID=26266101

Family Applications (2)

Application Number Title Priority Date Filing Date
GB47631/66A Expired GB1195837A (en) 1966-10-24 1966-10-24 Method of Producing Photographic Images
GB47633/66A Expired GB1195838A (en) 1966-10-24 1966-10-24 A Method of Producing Photographic Images

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB47631/66A Expired GB1195837A (en) 1966-10-24 1966-10-24 Method of Producing Photographic Images

Country Status (5)

Country Link
US (1) US3565620A (en)
BE (1) BE704930A (en)
DE (2) DE1597490C2 (en)
GB (2) GB1195837A (en)
NL (1) NL6713674A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2719371A1 (en) * 1977-04-30 1978-11-02 Agfa Gevaert Ag PHOTOGRAPHIC REVERSAL PROCEDURE
JPH0756565B2 (en) * 1986-06-25 1995-06-14 富士写真フイルム株式会社 Direct positive image forming method
EP0416174A1 (en) * 1989-09-04 1991-03-13 Agfa-Gevaert N.V. Method of developing direct positive silver halide material
DE69012990T2 (en) * 1990-07-27 1995-03-09 Agfa Gevaert Nv Photosensitive silver halide material for the production of direct positive images.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2410690A (en) * 1943-08-26 1946-11-05 Eastman Kodak Co Method of improving the sensitivity characteristics of emulsions
BE502879A (en) * 1950-04-29

Also Published As

Publication number Publication date
DE1597493A1 (en) 1970-05-14
NL6713674A (en) 1967-12-27
DE1597493C2 (en) 1983-08-25
GB1195837A (en) 1970-06-24
DE1597490C2 (en) 1983-09-01
BE704930A (en) 1968-04-11
DE1597490A1 (en) 1970-06-04
US3565620A (en) 1971-02-23

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PLNP Patent lapsed through nonpayment of renewal fees