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AN AC IMPEDANCE BRIDGE FOR MONITORING MATERIAL IN A DEVELOPER OR TONER CONTAINER

IP.com Disclosure Number: IPCOM000027742D
Original Publication Date: 1999-Apr-30
Included in the Prior Art Database: 2004-Apr-09

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is the use of an Alternating Current (AC) Impedance Bridge in an electrophotographic printing machine that detects the presence of a developer or toner container and its fill level. The device functions with ferromagnetic developer, toner, or mixtures thereof in a powdered or liquid state.