EP 0458691 A1 19911127 - Improvement in thermal printheads.
Title (en)
Improvement in thermal printheads.
Title (de)
Verbesserung für thermische Druckknöpfe.
Title (fr)
Perfectionnement aux têtes thermiques d'imprimantes.
Publication
Application
Priority
FR 9006444 A 19900523
Abstract (en)
The print head comprises, under the line (5) of heating points, a film (2) of heat resistant material which constitutes a temperature sensor in the proximity of the heating points, allowing the rapid delivery of a signal which can be used for adjusting the amount of energy to be supplied to each heating point, and which allows ever higher frequencies of regulated energising of these points.
IPC 1-7
IPC 8 full level
B41J 2/335 (2006.01); B41J 2/375 (2006.01)
CPC (source: EP US)
B41J 2/3357 (2013.01 - EP US); B41J 2/375 (2013.01 - EP US)
Citation (search report)
- [X] US 4837586 A 19890606 - BROWNSTEIN SCOTT A [US]
- [X] PATENT ABSTRACTS OF JAPAN vol. 5, no. 14 (M-52)(686), 28 janvier 1981; & JP - A - 55144178 (TOKYO SHIBAURA DENKI K.K.) 10.11.1980
- [Y] PATENT ABSTRACTS OF JAPAN vol. 6, no. 23 (M-111)(901), 10 février 1982; & JP - A - 56142081 (RICOH K.K.) 06.11.1981
- [A] PATENT ABSTRACTS OF JAPAN vol. 11, no. 111 (M-578)(2558), 8 avril 1987; & JP - A - 61255872 (MATSUSHITA ELECTRIC IND. CO. LTD.) 13.11.1986
- [Y] PATENT ABSTRACTS OF JAPAN vol. 12, no. 52 (M-668)(2899), 17 février 1988; & JP - A - 62199471 (MITSUBISHI ELECTRIC CORP.) 03.09.1987
Designated contracting state (EPC)
BE DE ES GB IT SE
DOCDB simple family (publication)
EP 0458691 A1 19911127; FR 2662395 A1 19911129; FR 2662395 B1 19950113; US 5196865 A 19930323
DOCDB simple family (application)
EP 91401300 A 19910521; FR 9006444 A 19900523; US 70326191 A 19910520