Printer means for printing front and/or back side of a band-shaped recording medium

US5797079A · kind A · utility

Assignee

• Siemens Nixdorf Informationssysteme AG · DE

Inventors

• Edmund Creutzmann · Borgo San Lazzaro, DE
• Walter Kopp · Taufkirchen, DE
• Heinz Herzog · Karlstein, DE

Key dates

• Filing date: Apr 7, 1997
• Grant date: Aug 18, 1998
• Expiry date: Apr 7, 2017

Classification

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

Abstract

A printer for selectively printing on one or both sides of a web-shaped recording medium includes a paper turn-over apparatus in the paper conveying channel. The turn-over apparatus is a removable unit and can be changed from a turn-over operation for two sided printing to a parallel conveyance for one sided printing of two recording mediums. A conveyor that moves the recording medium through the printer has an adjustable width to adapt to different recording medium widths. The conveyor includes a return which returns the recording medium to the turn-over apparatus after being printed on one side. The return includes a traction roller pair and a lever to swivel one of the rollers in and out. A connecting channel leads from the traction rollers and includes guide baffles. Conveyor rollers are arranged along the connecting channel at less than the spacing of the folds in the folded recording medium. The guide surfaces for the recording medium have air openings to generate an air pillow between the recording medium and the guide surface.