Global Patent Index - EP 0831362 A1

EP 0831362 A1 19980325 - Silver halide light-sensitive material with colloidal silica as protective colloid coated from layers without or with minimum amounts of gelatin as a binder material

Title (en)

Silver halide light-sensitive material with colloidal silica as protective colloid coated from layers without or with minimum amounts of gelatin as a binder material

Title (de)

Lichtempfindliches Silberhalogenidmaterial mit Kieselsäure-Schutzkolloid, das Schichten enthält, die kein oder ein Minimum an Gelatine als Bindemittel enthalten

Title (fr)

Produit à l'halogénure d'argent sensible à la lumière avec colloide protecteur à base de silice colloidale comprenant des couches qui ne contiennent pas de gelatine ou qui contiennent une quantité minimale de gélatine comme liant

Publication

EP 0831362 A1 19980325 (EN)

Application

EP 97202778 A 19970910

Priority

  • EP 97202778 A 19970910
  • EP 96202601 A 19960918

Abstract (en)

A light-sensitive silver halide photographic material is disclosed, said material comprising a support and one or more hydrophilic colloidal silver halide emulsion layers having silver halide crystals with colloidal silica as a protective colloid the said layer(s) having a gesi, defined as ratio by weight of gelatin binder to silver, in the range from 0 to less than 0.05 and a sisi, defined as ratio by weight of silica to silver, in the range from 0.01 to less than 0.10, wherein said weight of silver in the calculation of gesi and sisi is expressed as an equivalent amount of silver nitrate.

IPC 1-7

G03C 1/04; G03C 5/16

IPC 8 full level

G03C 1/04 (2006.01); G03C 5/16 (2006.01)

CPC (source: EP)

G03C 1/04 (2013.01); G03C 5/16 (2013.01); G03C 2005/168 (2013.01); G03C 2200/39 (2013.01); G03C 2200/47 (2013.01)

Citation (search report)

Designated contracting state (EPC)

BE DE FR GB

DOCDB simple family (publication)

EP 0831362 A1 19980325

DOCDB simple family (application)

EP 97202778 A 19970910