Device for automatically replenishing toner to dry-type developi

Details Device for automatically replenishing toner to dry-type developi Device for automatically replenishing toner to dry-type developi

1978-08-16

1980-10-28

Martin, Jr., Roland E.

Coating apparatus

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

With electromagnetic and/or electrostatic removal of...

118657, 222DIG1, 355 3DD, G03G 1509

Patent

active

042300703

ABSTRACT:
In a dry-type developing apparatus for use in electrophotography including a developing sleeve for conveying a two-component developer composed of a toner and a carrier to a developing station, an automatic toner replenishing device comprises a roller to which voltage is applied having recessed toner dispenser portions and a toner recovering peripheral surface portion on its periphery and rotatable in contact with a portion of the developer on the sleeve after the developer portion has passed through the developing station, bias voltage sources connected to the sleeve and to the roller respectively to produce a potential difference between the sleeve and the roller, and a toner tank arranged to cover part of the roller and containing the toner to be replenished.

REFERENCES:
patent: 3152012 (1964-10-01), Schaffert
patent: 3453045 (1969-07-01), Fantuzzo
patent: 3929098 (1975-12-01), Liebman
patent: 3941084 (1976-03-01), Kurita
patent: 4018187 (1977-04-01), Abbott et al.

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