Toner dispensing apparatus

Details Toner dispensing apparatus Toner dispensing apparatus

1975-01-20

1976-10-12

Stein, Mervin

Coating apparatus

With means to apply electrical and/or radiant energy to work...

With electromagnetic and/or electrostatic removal of...

222241, 222414, G03G 1508

Patent

active

039850986

ABSTRACT:
A toner dispensing apparatus for electrophotographic copiers. The dispenser includes an elongated hollow tubular member extending across the developer assembly of the copier within which is positioned a rotatable auger of novel construction having a helical groove formed around its surface. One end of the auger extends out of the tubular member into a toner supply container which is adapted to feed fresh toner into the groove of the auger. Rotation of the auger transports closely metered amounts of toner from the supply container into and along the tubular member and as it is carried there along, the toner will be automatically dispensed in precise amounts through a plurality of apertures extending along the bottom of the tubular member. According to one important feature of the invention, the toner dispenser is supported across the developer assembly in a position to dispense toner into the developer as it is falling from the development zone toward the elevator sump. This provides an opportunity for effective mixing of the toner with the developer without the need for rotating mixing screws or the like in the elevator sump, although a stationary crossmixer is preferably provided to assist in the mixing activity.

REFERENCES:
patent: 3103445 (1963-09-01), Bogdonoff et al.
patent: 3149760 (1964-09-01), Eichorn et al.
patent: 3176881 (1965-04-01), Malby et al.
patent: 3305141 (1967-02-01), Wheeler
patent: 3310205 (1967-03-01), Meyer
patent: 3572555 (1971-03-01), Knight et al.
patent: 3622054 (1971-11-01), Davidson
patent: 3659556 (1972-05-01), Mutschler
patent: 3697050 (1972-10-01), Stanley
patent: 3724422 (1973-04-01), Latone et al.
patent: 3825936 (1974-07-01), Ott et al.
IBM Technical Disclosure Bulletin; Daniels, R. A.; vol. 17, No. 4, Sept. 1974, pp. 1094-1095.

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