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TONER SENSOR Disclosure Number: IPCOM000024560D
Original Publication Date: 1980-Dec-31
Included in the Prior Art Database: 2004-Apr-02

Publishing Venue

Xerox Disclosure Journal


In an electrophotographic printing machine, a supply of toner particles is stored in a housing. It is highly desirable to have an indication readily visible to the operator for determining when the housing is depleted of toner particles. As shown in Figure I, toner housing includes a top 10 having a slot 12 therein. Cylinder 14 having a T-shaped portion 16 extending outwardly therefrom is mounted rotatably in brackets 18 secured to top 10. Roll 14 includes a red rectangular strip 20 extending substantially parallel to its longitudinal axis thereof across the circumferential surface.