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EXPOSURE CONTROL WITH MULTIPLE FLASH LAMPS

IP.com Disclosure Number: IPCOM000025505D
Original Publication Date: 1985-Oct-31
Included in the Prior Art Database: 2004-Apr-04

Publishing Venue

Xerox Disclosure Journal

Abstract

The figure discloses a document imaging system consisting of an enclosed housing 10 having an upper surface defined by a document support platen 12. The bottom surface accommodates a lens 14. A photoreceptor 16 is positioned beneath the housing and is exposed to light reflected from a document placed on platen 12. The light is produced by lamps 20, 22, 24, 26 located within the housing. Lamp 20 produces a first component of the total required exposure. Photodetector 28 measures the light from the cavity walls and determines the remaining exposure required from lamps 22, 24, 26, as well as their sequencing.