Electrostatic copying machine having flash-discharge-lamp fixing unit

US4202618A · kind A · utility

Assignee

• AGFA-Gervaert AG · DE

Inventors

• Fritz Waschk · Unterhaching, DE
• Heinz Webersik · Munich, DE
• Rudolf Schinagl · Unterhaching, DE

Key dates

• Filing date: Dec 30, 1977
• Grant date: May 13, 1980
• Expiry date: Dec 30, 1997

Classification

• Technology area (CPC G): Physics
• CPC primary: G03G21/206
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A lamp of low ozone generation is used as the flash lamp, to minimize the amount of ozone reaching the machine exterior. A first cooling-air passage includes the space surrounding the flash lamp and its reflector and is provided downstream thereof with an activated-carbon filter, from which is discharged a quite hot first cooling-air stream of low volumetric flow rate. A second cooling-air stream emerging from the electronics compartment of the machine is much cooler and cleaner and of high volumetric flow rate. The first and second cooling-air streams are mixed together, to dilute and cool the first, prior to actual discharge to the machine exterior. The mixed air streams are discharged in downwards direction.