EP 0639451 B1 19970604 - Ferroelectric printing process
Title (en)
Ferroelectric printing process
Title (de)
Druckverfahren mit Ferroelektrika
Title (fr)
Procédé d'impression utilisant des moyens ferroélectriques
Publication
Application
Priority
DE 4328037 A 19930820
Abstract (en)
[origin: EP0639451A1] According to the invention, methods are provided with which the charges acting on the surface of a printing forme (30) having a ferroelectric layer can be increased. For this purpose, either the temperature on the surface of the printing forme (30) is increased with respect to the temperature at which it was polarised or, for the transfer of toner, a mechanical loading is exerted on the forme cylinder (3), or charge carriers are applied over the entire surface onto the printing forme (30), as a result of which a potential difference is produced between positively and negatively polarised regions, which leads to an increase of contrast between image regions and non-image regions. <IMAGE>
IPC 1-7
IPC 8 full level
G03G 15/05 (2006.01); B41C 1/10 (2006.01)
CPC (source: EP US)
B41C 1/1058 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0639451 A1 19950222; EP 0639451 B1 19970604; CA 2130631 A1 19950221; CA 2130631 C 19980714; DE 4328037 A1 19950302; DE 59402990 D1 19970710; JP 2728367 B2 19980318; JP H0777861 A 19950320; US 5580688 A 19961203
DOCDB simple family (application)
EP 94112675 A 19940813; CA 2130631 A 19940822; DE 4328037 A 19930820; DE 59402990 T 19940813; JP 19706794 A 19940822; US 29364494 A 19940822