Mechanism for the drive of actuation elements movable in sealed regions of non-mechanical printer or copier means

US4711564A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Hubert Mugrauer · Straubing, DE
• Ernst Puritscher · Unterhaching, DE
• Franz Wittmann · Hockenheim, DE

Key dates

• Filing date: Dec 3, 1986
• Grant date: Dec 8, 1987
• Expiry date: Dec 3, 2006

Classification

• Technology area (CPC G): Physics
• CPC primary: G03G15/0258
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

In the cleaning station of an electrophotographic printer, the stripper element is driven with the assistance of a cable roller arranged outside of a stripping chamber. The cable roller arranged in alignment with the through openings for the traction cable comprises guide grooves for the traction cable on its generated surface, these guide grooves proceeding left-hand or right-hand in a plurality of spirals or turns. Via a thread, the cable roller is arranged on a stationary rotational axis which has the same characteristic as the guide grooves in terms of direction and pitch or slope. As a result thereof, the traction cable is conducted on a straight line through the seals of the stripping chamber at a constant angle given movement of the cable roller.