EP 0358073 B1 19940601 - Photographic-recording material.
Title (en)
Photographic-recording material.
Title (de)
Fotografisches Aufzeichnungsmaterial.
Title (fr)
Matériau de reproduction photographique.
Publication
Application
Priority
DE 3830522 A 19880908
Abstract (en)
[origin: JPH02113237A] PURPOSE: To obtain the photographic recording material improved in maximum density by incorporating a specified compound in at least one layer located nearer to a support than a protective layer. CONSTITUTION: At least one layer formed nearer to the support than the protective layer contains the compound in a state of a free acid represented by formula I in which R1 is an alkylene, arylene, aralkylene, or cycloalkylene group; L is a residue of a polyester having an average molecular weight of 500-20,000; (m) is 0 or 1; and (n) is 0-30, preferably, 0-10, and m+n>=1. This polyester carboxyl acid has block structures and the hydrophobic polyester block is exchanged by a hydrophilic block having 2 free carboxylic groups and the polyester has a prescribed molecular weight, thus permitting the photographic recording material to have the maximum density improved.
IPC 1-7
IPC 8 full level
G03C 1/04 (2006.01)
CPC (source: EP US)
G03C 1/04 (2013.01 - EP US); Y10S 430/162 (2013.01 - EP US)
Citation (examination)
DE 2234736 A1 19730201 - EASTMAN KODAK CO
Designated contracting state (EPC)
BE DE FR GB NL
DOCDB simple family (publication)
EP 0358073 A2 19900314; EP 0358073 A3 19910327; EP 0358073 B1 19940601; DE 3830522 A1 19900315; DE 58907755 D1 19940707; JP 2723628 B2 19980309; JP H02113237 A 19900425; US 4939077 A 19900703
DOCDB simple family (application)
EP 89115801 A 19890826; DE 3830522 A 19880908; DE 58907755 T 19890826; JP 23058689 A 19890907; US 39962589 A 19890825