EP 0986469 B1 20011219 - METHOD FOR OPERATING AN ENGRAVING MEMBER
Title (en)
METHOD FOR OPERATING AN ENGRAVING MEMBER
Title (de)
VERFAHREN ZUM BETRIEB EINES GRAVIERORGANS
Title (fr)
PROCEDE DE FONCTIONNEMENT D'UN ORGANE DE GRAVURE
Publication
Application
Priority
- DE 9801445 W 19980527
- DE 19723184 A 19970603
Abstract (en)
[origin: DE19723184A1] The invention relates to a method for operating an engraving member in an electronic engraving machine to engrave printing forms, especially printing cylinders for intaglio printing. A burin of the engraving member is controlled by an engraving signal and engraves a sequence of cups arranged in a gravure screen in the rotating printing cylinder. The engraving signal is formed by superimposing the image signal representing the tonalities to be engraved. In order to obtain good quality engraving, the engraving member is heated to a temperature that is close to operating temperature before engraving starts and/or during an interruption of engraving. To this end, the engraving member is impinged upon by a periodic signal whose frequency is preferably located inside the ultrasonic range in order to avoid noise disturbances.
IPC 1-7
IPC 8 full level
B41C 1/045 (2006.01); B44B 3/02 (2006.01)
CPC (source: EP US)
B41C 1/045 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE ES FR GB IT LI
DOCDB simple family (publication)
DE 19723184 A1 19981210; DE 19723184 B4 20060112; CN 1261307 A 20000726; DE 59802547 D1 20020131; EP 0986469 A1 20000322; EP 0986469 B1 20011219; ES 2167917 T3 20020516; JP 2000512941 A 20001003; JP 3149193 B2 20010326; US 6741369 B1 20040525; WO 9855305 A1 19981210
DOCDB simple family (application)
DE 19723184 A 19970603; CN 98805316 A 19980527; DE 59802547 T 19980527; DE 9801445 W 19980527; EP 98934806 A 19980527; ES 98934806 T 19980527; JP 50126999 A 19980527; US 44512100 A 20000217