Matrix printer having document thickness compensating device

US4024940A · kind A · utility

Assignee

• Mannesmann AG · DE

Inventors

• Wolfgang Hendrischk · Neu-Ulm, DE
• Hubert Ott · Bad Abbach, DE
• Wolfgang Seybold
• Horst Heisele · Asselfingen, DE
• Karl Mayr · Menden, DE

Key dates

• Filing date: Apr 13, 1976
• Grant date: May 24, 1977
• Expiry date: Apr 13, 1996

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41J25/308
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A matrix printer with a reciprocating carriage carries transversely moving spring biased printing head. A roller on the head runs on a resilient rail urged against the platen and can be retracted by pivoting the rail carrier under engagement of a second rail cooperating with a second roller on the head. A cam track in a terminal position of the carriage provides for independent head retraction through engagement with the second roller.