Browse Prior Art Database

Toner Dispenser

IP.com Disclosure Number: IPCOM000092179D
Original Publication Date: 1968-Oct-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 29K

Publishing Venue

IBM

Related People

Medley, HC: AUTHOR

Abstract

In this toner dispenser for electrophotographic machines, movable bottom wall or feed plate 1 of hopper 2 is spring-biased and, through the coaction of spring 3 and cam 4, is reciprocated for dispensing the toner in hopper 2. Gap 11 between side wall 5 and leading edges 6 of plate 1 determines or meters the amount of toner dispensed. Seal 7, in rubbing contact with plate 1, is attached to side wall 8 and prevents leakage of toner along such wall. Two end walls, not shown, are in contact with and extend below plate 1 to prevent toner leakage along these walls. In operation, plate 1 is moved to the right by the cam 4 rotation, as shown by the arrow, undercutting toner 9 in the bottom of hopper 2. A metered amount of toner is carried out of hopper 2 on leading edge 6 of plate 1.

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Toner Dispenser

In this toner dispenser for electrophotographic machines, movable bottom wall or feed plate 1 of hopper 2 is spring-biased and, through the coaction of spring 3 and cam 4, is reciprocated for dispensing the toner in hopper 2. Gap 11 between side wall 5 and leading edges 6 of plate 1 determines or meters the amount of toner dispensed. Seal 7, in rubbing contact with plate 1, is attached to side wall 8 and prevents leakage of toner along such wall. Two end walls, not shown, are in contact with and extend below plate 1 to prevent toner leakage along these walls. In operation, plate 1 is moved to the right by the cam 4 rotation, as shown by the arrow, undercutting toner 9 in the bottom of hopper 2. A metered amount of toner is carried out of hopper 2 on leading edge 6 of plate
1. When trailing edge 10 of plate 1 drops off the high point of cam 4, plate 1 snaps back due to the force of spring 3, thus dispensing the amount of toner carried on edge 6. The impact of plate 1 against the low point of cam 3 causes shock and vibration in hopper 2 and causes the toner to settle down on plate 1 to replace the toner on edge 6 just dispensed.

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