EP 0123224 B1 19880629 - HEAT SENSITIVE RECORDING MATERIALS
Title (en)
HEAT SENSITIVE RECORDING MATERIALS
Publication
Application
Priority
- JP 6504383 A 19830413
- JP 11475283 A 19830624
- JP 15846983 A 19830830
- JP 16901583 A 19830913
Abstract (en)
[origin: EP0123224A2] A heat sensitive recording material comprising a support and a recording layer formed thereon, the recording layer containing (a) a diazo compound, (b) a coupling component and (c) a coloring activator, as the three main components, at least one of the three components (a) to (c) being present in microcapsules and the wall of the microcapsules being composed of a polymer formed around the material encapsulated by a polymerization of reactants. By incorporating a part of the main components in microcapsules, the shelf life of the heat sensitive recording material is greatly improved and when the wall of the microcapsules is formed by the polymerization of reactants around the material encapsulated, the reactive component in the microcapsules immediately passes through the capsule wall upon heating to cause coloration.
IPC 1-7
IPC 8 full level
CPC (source: EP)
G03C 1/002 (2013.01); G03C 1/52 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0123224 A2 19841031; EP 0123224 A3 19850515; EP 0123224 B1 19880629; DE 3472472 D1 19880804; ES 531627 A0 19860116; ES 8604048 A1 19860116
DOCDB simple family (application)
EP 84104136 A 19840412; DE 3472472 T 19840412; ES 531627 A 19840413