Device for the positionally exact synchronization of the parallel course of recording medium webs in an electrographic printer device

US6055408A · kind A · utility

Assignee

• Oce Printing Systems GmbH · DE

Inventors

• Edmund Creutzmann · Borgo San Lazzaro, DE
• Andreas Eckardt · Hersbruck, DE
• Walter Kopp · Taufkirchen, DE
• Hans Winter · Gelnhausen, DE
• Martin Silbersack · Borgo San Lazzaro, DE

Key dates

• Filing date: Sep 24, 1997
• Grant date: Apr 25, 2000
• Expiry date: Sep 24, 2017

Classification

• Technology area (CPC G): Physics
• CPC primary: G03G2215/00924
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A printer for printing endless paper webs on both sides has two printing stations with a web turnover station therebetween. The paper web is fed in parallel side-by-side to the two printing stations which are on the same rollers. The drive of the web through the printer is by a positive drive, using pins to engage holes in the paper web, for example, into the first printing station. The drive of the paper web thereafter is by friction drive to permit slippage in the drive to compensate for variations in paper length during heating, etc. The slippage is controlled by brakes or other drag inducing devices acting on one or both of the two portions of the paper web.