Toner metering apparatus

Details Toner metering apparatus Toner metering apparatus

1989-08-11

1991-04-30

Grimley, A. T.

Photocopying

Contact printing

Light boxes

118656, 118661, 222DIG1, 355259, G03G 0000

Patent

active

050122894

ABSTRACT:
A developer apparatus (29) for use in an electrostatic reproduction apparatus includes a large reservoir of toner (34, 44). The toner is located in a supply chamber (39) and is metered to a developer roller chamber (35) from which it is carried by a developer roller (31) past a doctor blade (36) to a photoconductor drum (19) for image development. A toner metering roller (41) rotates with the developer roller (31) to provide a continuous supply of toner from the supply chamber (39) to the developer chamber (35). Once an equilibrium level (65) is reached, the toner metering roller (41) acts to remove toner (34) from the developer chamber (35) to the supply chamber (39) to insure proper operation of the developer roller (31).

REFERENCES:
patent: 3550555 (1970-12-01), Hudson
patent: 4660960 (1987-04-01), Fukunaga et al.
patent: 4797704 (1989-01-01), Williams et al.

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