Global Patent Index - EP 0619515 A1

EP 0619515 A1 19941012 - Surface latent image type silver halide photographic emulsion.

Title (en)

Surface latent image type silver halide photographic emulsion.

Title (de)

Oberflächenlatentbildtyp Silberhalogenidemulsion.

Title (fr)

Emulsion photographique à l'halogénure d'argent formant image latente superficielle.

Publication

EP 0619515 A1 19941012 (EN)

Application

EP 94104787 A 19940325

Priority

  • JP 10371893 A 19930407
  • JP 10371993 A 19930407

Abstract (en)

Disclosed herein is a surface latent image type silver halide photographic emulsion containing silver halide grains which have been formed in the presence of a tellurium compound which forms silver telluride in silver bromide emulsion at a pseudo-first-order reaction rate constant k of 1 x 10<-><7> min<-><1> to 1 x 10<-><1> min<-><1>, and in which tellurium ions have been thereby doped. Also disclosed is a surface latent image type silver halide photographic emulsion containing silver halide grains which have been formed by adding at least one labile tellurium compound selected from the group consisting of an organic compound containing tellurium single-bonded directly to S, SO, SO2, Se, P=O or P=S, a cyclic organic compound having at least one tellurium atom and two or more chalcogen atoms in a ring, and an organic compound containing tellurium anions, and in which tellurium ions have been thereby doped.

IPC 1-7

G03C 1/09

IPC 8 full level

G03C 1/09 (2006.01)

CPC (source: EP)

G03C 1/09 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE

DOCDB simple family (publication)

EP 0619515 A1 19941012; EP 0619515 B1 20001220; DE 69426431 D1 20010125; DE 69426431 T2 20010510

DOCDB simple family (application)

EP 94104787 A 19940325; DE 69426431 T 19940325