EP 0765227 B1 19991201 - HEATER POWER COMPENSATION FOR TEMPERATURE IN THERMAL PRINTING SYSTEMS
Title (en)
HEATER POWER COMPENSATION FOR TEMPERATURE IN THERMAL PRINTING SYSTEMS
Title (de)
TEMPERATURKOMPENSATION DER STROMVERSORGUNG DER HEIZELEMENTE IN THERMISCHEN DRUCKSYSTEMEN
Title (fr)
COMPENSATION EN TEMPERATURE D'UNE ALIMENTATION DE DISPOSITIF DE CHAUFFAGE DANS DES SYSTEMES D'IMPRESSION
Publication
Application
Priority
- AU PN231495 A 19950412
- US 9605024 W 19960409
Abstract (en)
[origin: WO9632275A1] A method of and apparatus for compensating printing heads which operate, e.g. , in the coincident forces drop on demand printing mode for the effects of ambient print head temperature is disclosed. This helps to maintain consistent drop size over a wide operating temperature range. The apparatus includes a temperature sensor (300) which is affixed to the print head (50) in order to sense the average temperature of the head. The output of the sensor is connected to a device (310) which calculates the power supply voltage required at the said temperature. This result is used to control a programmable power supply (320) which is connected to the heater power supply of the head (50).
IPC 1-7
IPC 8 full level
B41J 2/01 (2006.01); B41J 2/005 (2006.01); B41J 2/05 (2006.01)
CPC (source: EP)
B41J 2/005 (2013.01); B41J 2/04553 (2013.01); B41J 2/04563 (2013.01); B41J 2/0457 (2013.01); B41J 2/0458 (2013.01); B41J 2/0459 (2013.01); B41J 2202/16 (2013.01)
Citation (examination)
US 4737803 A 19880412 - FUJIMURA YOSHIHIKO [JP], et al
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
WO 9632275 A1 19961017; AU PN231495 A0 19950504; DE 69605377 D1 20000105; DE 69605377 T2 20000518; EP 0765227 A1 19970402; EP 0765227 B1 19991201; JP H10501773 A 19980217
DOCDB simple family (application)
US 9605024 W 19960409; AU PN231495 A 19950412; DE 69605377 T 19960409; EP 96910811 A 19960409; JP 53118896 A 19960409