Copier with a toner supply device

Details Copier with a toner supply device Copier with a toner supply device

1988-07-19

1990-08-28

Braun, Fred L.

Photocopying

Contact printing

Light boxes

355246, G03G 2100

Patent

active

049529765

ABSTRACT:
A copier with a toner supply device which includes a toner cartridge. Toner is supplied from the toner cartridge to a hopper section of a developing unit of the copier and from the toner hopper section to a developing section which includes a developing sleeve. The end of toner in the toner hopper is sensed by a toner end sensing mechanism. A switching device is provided which performs an on-off operation as an operation for supplying toner from a new or full toner cartridge proceeds. A controller controls the developing unit, toner end sensing mechanism and switching device to insure good reproductions even before or immediately after the supply of toner.

REFERENCES:
patent: 4032227 (1977-06-01), Hubbard et al.
patent: 4260073 (1981-04-01), Baumann
patent: 4370053 (1983-01-01), Hirdyamda et al.
patent: 4423948 (1984-01-01), Kimura et al.
patent: 4647180 (1987-03-01), Watanabe
patent: 4647185 (1987-03-01), Takeda et al.
patent: 4669856 (1987-06-01), Yamada

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