EP 0421145 B1 19931208 - Lithographic printing machine.
Title (en)
Lithographic printing machine.
Title (de)
Lithographische Druckmaschine.
Title (fr)
Machine d'impression lithographique.
Publication
Application
Priority
US 41758789 A 19891005
Abstract (en)
[origin: EP0421145A2] An improved printing machine comprises a tubular rubber blanket, which is mounted removably on a blanket cylinder, has a continuous gap-free outer surface and is in rolling-off contact with a printing plate on a plate cylinder. The rubber blanket consists at least partially of a compressible material which is compressed by the plate cylinder at a gap between the plate cylinder and the blanket cylinder. The outer surface of the rubber blanket has a circumferential speed which is the same at points immediately before the gap, at the gap and immediately after the gap in order to prevent smearing of the printed image at the gap. The rubber blanket can comprise an outer layer of non-compressible material and an inner layer of compressible material. The outer layer of the rubber blanket is deformable in order to compress the inner layer of the rubber blanket. The inner layer of the rubber blanket contains a multiplicity of air bubbles which are relatively large prior to deformation of the outer layer of the rubber blanket by the printing plate on the plate cylinder and are relatively small in a partial region of the inner layer of the rubber blanket which is then compressed by deformation of the outer layer of the rubber blanket. The rubber blanket has an inner metal bush which is tensioned by the blanket cylinder in order to retain the rubber blanket on the blanket cylinder by this means.
IPC 1-7
IPC 8 full level
B41F 30/00 (2006.01); B41F 7/02 (2006.01); B41F 13/08 (2006.01); B41F 13/24 (2006.01); B41F 27/00 (2006.01); B41F 30/04 (2006.01); B41N 10/00 (2006.01); B41N 10/04 (2006.01)
CPC (source: EP)
B41F 27/00 (2013.01); B41F 30/04 (2013.01); B41N 6/00 (2013.01); B41N 10/00 (2013.01)
Designated contracting state (EPC)
CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0421145 A2 19910410; EP 0421145 A3 19910925; EP 0421145 B1 19931208; EP 0421145 B2 19990616; CA 2026954 A1 19910406; CA 2026954 C 19970506; CN 1026876 C 19941207; CN 1050701 A 19910417; DE 59003784 D1 19940120; ES 2048915 T3 19940401; ES 2048915 T5 19991101; HK 95394 A 19940916; JP 2569213 B2 19970108; JP H03128247 A 19910531
DOCDB simple family (application)
EP 90117234 A 19900907; CA 2026954 A 19901004; CN 90107916 A 19900928; DE 59003784 T 19900907; ES 90117234 T 19900907; HK 95394 A 19940908; JP 26658490 A 19901005