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Current content: 159 679 824 patent documents

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164 112 new documents added

576 445 documents amended

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EP 0137982 B1 19871223 - HEAT-SENSITIVE RECORDING SHEET

Title (en)

HEAT-SENSITIVE RECORDING SHEET

Publication

EP 0137982 B1 19871223 (DE)

Application

EP 84110091 A 19840823

Priority

JP 15308383 A 19830824

Abstract (en)

[origin: US4590500A] Heat-sensitive recording sheet comprising a base sheet and a color-forming layer including a colorless basic dyestuff and an organic color-developing agent, wherein said color-forming layer comprises a metal derivative of phthalic acid monoester (having a particular formula). The sheet provides superior stability against contamination with oily substances while keeping excellent fundamental qualities thereof.

IPC 1-7

B41M 5/26

IPC 8 full level

B41M 5/337 (2006.01); B41M 5/32 (2006.01)

CPC (source: EP US)

B41M 5/32 (2013.01 - EP US)

Citation (examination)

EP 0058345 A1 19820825 - JUJO PAPER CO LTD [JP]

Designated contracting state (EPC)

BE DE FR GB

DOCDB simple family (publication)

US 4590500 A 19860520; DE 3468196 D1 19880204; EP 0137982 A1 19850424; EP 0137982 B1 19871223; JP H0239993 B2 19900907; JP S6046293 A 19850313

DOCDB simple family (application)

US 64278884 A 19840821; DE 3468196 T 19840823; EP 84110091 A 19840823; JP 15308383 A 19830824