Apparatus for controlling speed of a developing roller as it eng

Details Apparatus for controlling speed of a developing roller as it eng Apparatus for controlling speed of a developing roller as it eng

1993-10-15

1995-08-08

Royer, William J.

Photocopying

Contact printing

Light boxes

355200, 355211, G03G 1506

Patent

active

054403774

ABSTRACT:
A developing device is provided with a clutch to engage or disengage between a sleeve and a driving motor. When the developing device is used for development, spacing rollers on the sleeve are brought in contact with a photoreceptor drum and the speed of the driving motor is reduced to a lower speed, thereafter the clutch is operated to engage the sleeve and the driving motor and the speed of the driving motor is increased to a rated speed.

REFERENCES:
patent: 4878088 (1989-10-01), Nakanishi et al.
patent: 4939547 (1990-07-01), Miyaji et al.
patent: 5089849 (1992-02-01), Hiraoka
patent: 5202739 (1993-04-01), Hatakeyama et al.
patent: 5283619 (1994-02-01), Nomura et al.
patent: 5291242 (1994-03-01), Takano
patent: 5293199 (1994-03-01), Saito et al.
patent: 5294967 (1994-03-01), Munakata et al.
patent: 5311260, Nakakuma et al.

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