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DEVELOPER METERING DEVICE

IP.com Disclosure Number: IPCOM000026240D
Original Publication Date: 1990-Dec-31
Included in the Prior Art Database: 2004-Apr-05

Publishing Venue

Xerox Disclosure Journal

Abstract

Metering rolls are used in toner dispensers to regulate discharge of toner. Similarly, a magnetic trim bar may be used to regulate the quantity and thickness of magnetic developer material on magnetic developer brushes. A metering roll is positioned in an opening in a developer housing and discharges a precise amount of developer material from the developer housing chamber for every revolution of the metering roll. Fresh developer is provided to the developer sump. This device greatly extends the overall magnetic developer lifetime in high volume electrophotographic printing machines.