Non-Metallic Developer Sensor Chute
Original Publication Date: 1986-Nov-01
Included in the Prior Art Database: 2005-Mar-09
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.