Browse Prior Art Database

Original Publication Date: 1983-Aug-31
Included in the Prior Art Database: 2004-Apr-04

Publishing Venue

Xerox Disclosure Journal


Most toner dispensers for electrostatographic reproducing apparatus have a ro-tatable foam dispensing roll 12 with a four lobe 14, 16, 18, 20 hopper to compress the foam roll as illustrated in Figure 1. An alternative is shown in Figure 2 where a two lobe 24, 26 toner hopper is depicted. In this design the hopDer wall 10, angles relative to ground are maintained constant thereby insuring that any critical angle providing toner slippage in the hopper is maintained. At the same time the volume of the hopper has been dramatically increased thereby providing a toner hopper of greater toner capacity. Since the foam roll is compressed over a smaller arc for a shorter time, it is expected that the useful life of the foam roll will increase. In addition, the required driving torque for the foam roll is reduced.