Electrographic printer with adjustable corona device

US5987299A · kind A · utility

Assignee

• Oce Printing Systems GmbH · DE

Inventors

• Walter Kopp · Taufkirchen, DE
• John W. Heinz · Morton Grove, US
• Otto Olbrich

Key dates

• Filing date: Jul 16, 1998
• Grant date: Nov 16, 1999
• Expiry date: Jul 16, 2018

Classification

• Technology area (CPC G): Physics
• CPC primary: G03G2215/1609
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An electrographic printer with a printing unit that comprises a photoconductor provided with a toner image during the printing process and which further comprises a corona device arranged at a distance from the photoconductor that generates an electrical field during the printing process for transferring the toner image onto an endless carrier material is provided. The printer, in a first operating mode, can print a first web section of the endless carrier material conducted along a transport path and, in a second operating mode, can simultaneously print a second web section conducted along a parallel transport path and arranged next to the first web section at a distance therefrom. The length of the electrical field generated by the corona device is adjustable according to whether a first web section or a first and second web section is transported along the transport path.