Global patent index - EP 0672943 B1

EP 0672943 B1 2000-01-12 - A silver halide imaging material and a method for obtaining an image according to the silver salt diffusion transfer process

Title (en)

A silver halide imaging material and a method for obtaining an image according to the silver salt diffusion transfer process

Title (de)

Silberhalogenid-Bildaufzeichnungsmaterial und Verfahren zur Erzeugung eines Bilds nach dem Silbersalz Diffusion-Übertragungsverfahren

Title (fr)

Matériau pour l'enregistrement d'images à l'halogénure d'argent et procédé d'obtention d'une image selon le procédé de diffusion-transfert de sel d'argent

Publication

EP 0672943 B1 (EN)

Application

EP 95200289 A

Priority

  • EP 95200289 A
  • EP 94200552 A

Abstract (en)

[origin: EP0672943A1] The present invention provides a method for obtaining an image according to the silver salt diffusion transfer process comprising the steps of: image-wise exposing an imaging material comprising on a support a photosensitive silver halide emulsion layer comprising a hydrophilic colloid and a waterpermeable top layer, that is essentially free from silver halide emulsion, comprising a hydrophilic colloid and being in waterpermeable contact with said photosensitive layer, developing said imaging material whilst in contact with an image receiving material comprising on a support an image receiving layer containing physical development nuclei using an aqueous alkaline processing solution in the presence of developing agent(s) and silver halide solvent(s) and separating said imaging material and image receiving material from each other, characterized in that the coverage of the hydrophilic colloids comprised in said top layer is not more than 0.4 g/m<2> and in that the coverage of the hydrophilic colloids comprised in said photosensitive layer is not more than 2.4 g/m<2>. The invention also provides an imaging material comprising a silver halide emulsion layer in water permeable contact with a water permeable base layer and a water permeable top layer which comprises not more than 0.4g/m<2> hydrophilic colloids.

IPC 1-7 (main, further and additional classification)

G03C 1/76; G03C 8/52

IPC 8 full level (invention and additional information)

G03C 1/76 (2006.01); G03C 8/52 (2006.01)

CPC (invention and additional information)

G03C 1/7614 (2013.01); G03C 8/52 (2013.01)

Designated contracting state (EPC)

BE DE FR GB NL

EPO simple patent family

EP 0672943 A1 19950920; EP 0672943 B1 20000112

INPADOC legal status

2003-09-02 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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