EP 0508273 B1 19950614 - Printing apparatus for offset printing with a toner.
Title (en)
Printing apparatus for offset printing with a toner.
Title (de)
Druckvorrichtung für den Offsetdruck mit einem Toner.
Title (fr)
Dispositif d'impression pour imprimer en offset avec un toner.
Publication
Application
Priority
AU PK556091 A 19910410
Abstract (en)
[origin: EP0508273A1] The invention relates to a printing apparatus for offset printing with a toner, having a forme cylinder (1), a transfer cylinder (4) and an impression cylinder (7). A web (6) of printing carrier is moved between the transfer cylinder (4) and the impression cylinder (7). On its outer surface, the forme cylinder (1) has a transfer medium (2) which is preferably a ferroelectric. The transfer medium (2) is covered by a toner deposit (3) which represents an image to be printed and is intended to be applied to the web (6) of printing carrier by the offset method. According to the invention, the toner deposit (3) is deposited onto the web (6) of printing carrier by electric influence. For this purpose, a negative direct voltage is applied to the impression cylinder (7), which leads to a voltage likewise being applied to the forme cylinder (1) and the transfer cylinder (4), such that the toner particles situated on the transfer medium (2) are attracted to the web (6) of printing carrier. <IMAGE>
IPC 1-7
IPC 8 full level
B41F 7/02 (2006.01); B41M 1/42 (2006.01); G03G 15/16 (2006.01)
CPC (source: EP US)
B41F 7/02 (2013.01 - EP US); B41M 1/42 (2013.01 - EP US); G03G 15/162 (2013.01 - EP US)
Citation (examination)
H. Vogel, Physik, Springer-Verlag, Berlin, Heidelberg, New-York 1974, 11. Auflage, Seite 305, 306
Designated contracting state (EPC)
CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0508273 A1 19921014; EP 0508273 B1 19950614; DE 59202488 D1 19950720; US 5354641 A 19941011
DOCDB simple family (application)
EP 92105504 A 19920331; DE 59202488 T 19920331; US 86193292 A 19920402