EP 0819064 B1 19990210 - THERMAL DYE TRANSFER PRINTING METHOD WITH ELECTRICAL LOSS COMPENSATION
Title (en)
THERMAL DYE TRANSFER PRINTING METHOD WITH ELECTRICAL LOSS COMPENSATION
Title (de)
FARBTHERMODRUCKVERFAHREN MIT KOMPENSATION DER ELEKTRISCHEN VERLUSTE
Title (fr)
PROCEDE D'IMPRESSION PAR TRANSFERT THERMIQUE DE COLORANTS, A COMPENSATION DE PERTES ELECTRIQUES
Publication
Application
Priority
- FR 9600473 W 19960328
- FR 9504286 A 19950404
Abstract (en)
[origin: WO9631352A1] A thermal printing method using a printing head (6, 20) with a plurality of resistive points (Pi) activated by the pulses of a supply voltage (Va) that fluctuates ( DELTA V) depending on the number (N) of simultaneously activated resistive points (Pi). The activation of the resistive points (Pi) is controlled by a control signal (STRB) with a duration determined so that the energy (e) delivered to the resistive points (Pi) by each pulse is unaffected by the fluctuations ( DELTA V) of the supply voltage (Va). The control signal (STRB) includes a first pulse (STRA) with a fixed, predetermined duration (To), followed by a second pulse (STRA+) with a variable duration (t), the duration (t) of the second pulse (STRA+) being determined during the duration (To) of the first pulse (STRA) depending on the actual value (V) of the supply voltage (Va).
IPC 1-7
IPC 8 full level
B41J 2/37 (2006.01)
CPC (source: EP US)
B41J 2/37 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 9631352 A1 19961010; DE 69601532 D1 19990325; DE 69601532 T2 19990902; EP 0819064 A1 19980121; EP 0819064 B1 19990210; FR 2732644 A1 19961011; FR 2732644 B1 19970430; JP H11503081 A 19990323; US 5978006 A 19991102
DOCDB simple family (application)
FR 9600473 W 19960328; DE 69601532 T 19960328; EP 96910996 A 19960328; FR 9504286 A 19950404; JP 53002496 A 19960328; US 93033197 A 19970925