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Non-Metallic Developer Sensor Chute

IP.com Disclosure Number: IPCOM000062450D
Original Publication Date: 1986-Nov-01
Included in the Prior Art Database: 2005-Mar-09

Publishing Venue

IBM

Related People

Authors:
Bourne, D Schlosser, RM [+details]

Abstract

In certain electrophotographic copiers/printers, the toner concentration of the developer's toner/carrier mix is measured by passing the mix through a mix chute, past a viewing window. Mix chutes are normally made of metal, and with time the chutes become clogged due to carrier build-up. A mix chute was constructed using non-metallic plastic material chosen from the electrostatic series for its affinity to toner. Such plastic chutes, made, for example, from acetal homopolymer, quickly form a toner layer which acts as a lubricant for the mix, and prevents clogging of the chute.