Exposure system for electrophotographic copying apparatus

US3977781A · kind A · utility

Assignee

• AGFA-Gervaert AG · DE

Inventors

• Rudolf Eppe
• Gunther Schnall
• Gunter Abbe · Gilching, DE
• Rudiger Ettelbruck · Ismaning, DE

Key dates

• Filing date: May 31, 1974
• Grant date: Aug 31, 1976
• Expiry date: May 31, 1994

Classification

• Technology area (CPC G): Physics
• CPC primary: G03G15/0435
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An electrophotographic copying apparatus wherein the original is placed face down onto a stationary transparent holder which is located above a reciprocating carriage for a lens element. The latter images the original onto a light receiving surface which travels along a straight path while the carriage moves in the same direction as the light receiving surface. The carriage can be moved by an eccentric drive, by a wiper which is attached to an endless belt or chain, or by a cam and follower assembly. The original is illuminated by flash lamps which are fired automatically while the carriage moves in the same direction as the light receiving surface.