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
  • G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
  • G03C8/32—Development processes or agents therefor
  • G03C8/36—Developers
  • G03C8/365—Developers containing silver-halide solvents
• • 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
  • G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
  • G03C8/02—Photosensitive materials characterised by the image-forming section
  • G03C8/04—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of inorganic or organo-metallic compounds derived from photosensitive noble metals
  • G03C8/06—Silver salt diffusion transfer

Definitions

• Processes for forming silver images by the steps of imagewise exposure and development of a photosensitive silver halide element, the formation of a diffusible complex of unexposed silver halide in the unexposed areas of the said photosensitive element and the transfer by diffusion of said complex to an element, in superposed relationship with the photosensitive element, where the silver of said complex is precipitated or reduced to form a visible image, are now well known.
• cyclic imides are barbituric acid, uracli and urazole as well as derivatives thereof, examples of which can be found in United States patent specification 2,857,276 mentioned above.
• hydroxylamine derivatives that are particularly suitable, mention may be made of the heterocyclic N-hydroxylamines such as N-hydroxymorpholine, N-hydroxy piperidine and N-hydroxypyrrolidine, the primary and secondary N-lower alkyl hydroxylamines such as N,N-diethylhydroxylamine, the alkoxy-substituted derivatives thereof such as N,N-di- (2-ethoxyethyl)hydroxylamine and N-ethyl-N-(Z-ethoxyethyl)hydroxylamine, the sulphone-hydroxylamines such as N-methyl-N-Z-ethylsulphonylethyl hydroxylamine and bis 2 (methylhydroxylamino)ethyl sulphone and the aminoalkyl hydroxyl
• the container is formed of a multilayer material whose inner layer is formed of a plastic such as polyvinyl acetal, e.g. polyvinyl butyral, polymeric esters such as cellulose acetate, cellulose acetate butyrate, polyvinyl acetate, polyvinyl chloride, etc., said layer being backed by a metal foil, e.g. a lead foil or leadtin foil which is impervious to the vapours of said solution.
• the containers may be strengthened by a more rapid backing material such as kraft paper or a plastic such as polyvinyl acetate and polyvinyl chloride. More details as to the construction of such a rupturable container can be found amonst others in United States patent specification 2,634,- 886 of Edwin H. Land, issued Apr. 14, 1953.
• the image-receiving layer of the image-receiving ele ment preferably comprises agents promoting precipitation of the silver from the transferred silver complex.
• agents called development nuclei or shortly nuclei
• Sulphides of heavy metals such as of antimony, bismuth, cadmium, cobalt, lead, nickel and silver are also suited.
• Lead sulphide and Zinc sulphide as well as the complex salts thereof are especially effective either in themselves or mixed with thioacetamide, dithiobiuret and dithio-oxamide.
• the heavy metals silver, gold, platinum, palladium and mercury are to be mentioned, preferably in colloidal form.
• Example 1 were from the image-receiving element to uncover the positive advanced in superposed relationship between a pair of print. pressure applying rollers to pread between them the roc- The ICSUltS obtained 8Y6 listed in thfi table bfilOW. essing composition of Example 1. 70 TABLE After a contact period of 36 seconds the emulsion to- Amount of 1-phenyl-8- Speed, u pyrazolidinone added D Dmin. Gamma percent gether with the layer of processing liquid was stripped 57 0 03 1 73 100 from the image-receiving element to uncover the positive 1.72 0.02 1.23 11 57 1.65 0. 03 i. s 1 2 print.
• R stands for aryl including substituted aryl
• each of R and R stands for hydrogen, an alkyl group, an arallryl group, or an aryl group, and
• R stands for hydrogen, alkyl, alkoxy, aralkoxy or aryloxy.
• R stands for alkoxy, aralkoxy, or aryloxy.

Landscapes

• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Chemical & Material Sciences (AREA)
• Inorganic Chemistry (AREA)
• Silver Salt Photography Or Processing Solution Therefor (AREA)
• Photosensitive Polymer And Photoresist Processing (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=10464441

Family Applications (1)

Country Status (8)

Cited By (3)

• 0
  • BE BE757147D patent/BE757147A/nl unknown
• 1969
  • 1969-10-27 GB GB5257269A patent/GB1320330A/en not_active Expired
• 1970
  • 1970-09-18 JP JP45081871A patent/JPS492611B1/ja active Pending
  • 1970-10-09 DE DE19702049699 patent/DE2049699A1/de active Pending
  • 1970-10-12 US US80186A patent/US3687662A/en not_active Expired - Lifetime
  • 1970-10-13 NL NL7014995A patent/NL7014995A/xx unknown
  • 1970-10-13 CA CA095411A patent/CA935015A/en not_active Expired
  • 1970-10-15 FR FR7037355A patent/FR2072163A5/fr not_active Expired

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