Global Patent Index - EP 0324391 A2

EP 0324391 A2 19890719 - Method for the formation of high-contrast images.

Title (en)

Method for the formation of high-contrast images.

Title (de)

Verfahren zur Erzeugung hochkontrastreicher Bilder.

Title (fr)

Méthode de formation d'images à haut contraste.

Publication

EP 0324391 A2 19890719 (EN)

Application

EP 89100221 A 19890107

Priority

  • JP 357688 A 19880111
  • JP 357988 A 19880111
  • JP 358388 A 19880111

Abstract (en)

A processing method for silver halide photogrphic material is disclosed, which stably provides images having high contrast and high dot quality with little degradation in sensitivity by rapid processing. In the method, a silver halide light-sensitive material having a silver halide emulsion layer containing a 3-pyrazolidone type compound, a dihydroxybenzene type compound or trihydroxybenzene type compound, is developed by a developer containing a di- or tri-hydroxybenzene type compound; a sulfite and an amino compound in the presence of a compound represented by the following Formula 1, 2 and 3; <CHEM>

IPC 1-7

G03C 1/10; G03C 1/42

IPC 8 full level

G03C 1/06 (2006.01); G03C 1/42 (2006.01); G03C 5/305 (2006.01)

CPC (source: EP)

G03C 1/061 (2013.01); G03C 1/42 (2013.01); G03C 5/305 (2013.01)

Designated contracting state (EPC)

DE GB IT NL

DOCDB simple family (publication)

EP 0324391 A2 19890719; EP 0324391 A3 19901227

DOCDB simple family (application)

EP 89100221 A 19890107