Dispensing – Processes of dispensing
Patent
1978-08-23
1981-04-07
Tollberg, Stanley H.
Dispensing
Processes of dispensing
118652, 118691, 222148, 222318, 222DIG1, 355 3DD, G03G 1500
Patent
active
042600731
ABSTRACT:
An electrophotographic apparatus of the two-component, dry developer and reusable photoconductor type, having a developer unit, and replenisher for supplying toner to the developer unit. The replenisher includes a first supply of virgin toner, and a second supply of used toner. A toner feed device operates to simultaneously feed toner to the developer unit from the first and second replenisher supplies. The proportion of toner fed from the first and second supplies is variable; however, such proportion requires that virgin toner must always be fed. Used toner is provided by collecting toner at the apparatus' cleaning station. Toner-low indication is provided for only the first supply, so as to prevent the feeding of only used toner. A toner concentration sensor signals the need to feed the combination of virgin/used toner to the developer unit.
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patent: 3659556 (1972-05-01), Mutschler
patent: 3700328 (1972-10-01), Davidge
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"Toner Holder for Xerographic Machine", vol. 3, No. 1, Xerox Disclosure Journal, 1/78, 63, Spencer.
International Business Machines - Corporation
Silverberg Fred A.
Sirr Francis A.
Tollberg Stanley H.
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