EP 0256660 B1 19921021 - PRINTING PROCESS FOR A THERMAL TRANSFER TYPE MULTICOLOR PRINTER
Title (en)
PRINTING PROCESS FOR A THERMAL TRANSFER TYPE MULTICOLOR PRINTER
Publication
Application
Priority
JP 16890786 A 19860717
Abstract (en)
[origin: EP0256660A2] A printing process for a thermal transfer type multicolor printer repeatedly transfer a plurality of color ink, such as yellow, magenta and cyan color ink, in turn on a printing paper (1) so as to obtain a multicolor printed paper (1c). After every time when one color ink is transferred to the printing paper (1), the printing paper (1) lapped with a multicolor ink film (2) is fed forward to a predetermined separation position at a predetermined printing speed under a pressure applied between a thermal head (7) and a platen roller (6). Thereafter, the thermal head (7) is separated from the platen roller (6) so as to prevent the remaining heat of the thermal head (7) from affecting to the multicolor ink film (2), so that the ink wax of the multicolor ink film (2) is prevented from being melted and working as an adhesive agent for the printing paper (1) and the multicolor ink film (2). Hence, the printing paper (1) can be separated from the multicolor ink film (2) with ease. Then the feeding speed of the printing paper (1) is made slower than that of the multicolor ink film (2) so as to prevent the multicolor ink film (2) from slackening. Thereafter, the printing paper (1) is completely separated from the multicolor ink film (2) and the transferred ink quantity is not changed in this separation process (S5, S10 and S15; S6, S11 and S16), thus, the multicolor dot printing can be performed with accuracy.
IPC 1-7
IPC 8 full level
B41J 17/04 (2006.01); B41J 2/325 (2006.01); B41J 11/00 (2006.01); B41J 11/42 (2006.01); B41J 17/30 (2006.01); B41J 17/38 (2006.01); B41J 35/18 (2006.01)
CPC (source: EP)
B41J 35/18 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0256660 A2 19880224; EP 0256660 A3 19890607; EP 0256660 B1 19921021; CA 1318180 C 19930525; DE 3782295 D1 19921126; DE 3782295 T2 19930506; JP H0667648 B2 19940831; JP S6325071 A 19880202
DOCDB simple family (application)
EP 87306080 A 19870709; CA 541443 A 19870707; DE 3782295 T 19870709; JP 16890786 A 19860717