EP 0249523 B1 19900801 - METHOD OF AND APPARATUS FOR OPERATING A THERMAL PRINTING HEAD
Title (en)
METHOD OF AND APPARATUS FOR OPERATING A THERMAL PRINTING HEAD
Publication
Application
Priority
FR 8608125 A 19860605
Abstract (en)
[origin: US4789870A] A thermal series type printing head is controlled on-the-fly, during a succession of cycles of a duration at most equal to the time for printing the points, so as to be heated independently during the first half and during the second half of each cycle. Thus an offset dot can be printed of half a length of a a normal dot, or an extended dot, one and half times as long as the normal dot, for improving the definition of printing without reducing the writing speed. The invention applies to printing systems, particularly for printers connected to word processing devices.
IPC 1-7
IPC 8 full level
B41J 2/355 (2006.01)
CPC (source: EP US)
B41J 2/355 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE ES GB IT NL
DOCDB simple family (publication)
EP 0249523 A1 19871216; EP 0249523 B1 19900801; DE 3764031 D1 19900906; ES 2017733 B3 19910301; FR 2599672 A1 19871211; US 4789870 A 19881206
DOCDB simple family (application)
EP 87401197 A 19870527; DE 3764031 T 19870527; ES 87401197 T 19870527; FR 8608125 A 19860605; US 5512087 A 19870528