Driving device and image forming device

Details Driving device and image forming device Driving device and image forming device

2005-08-23

2005-08-23

Duda, Rina (Department: 2837)

Electricity: motive power systems

Positional servo systems

Program- or pattern-controlled systems

C318S560000, C318S568180, C399S130000, C399S167000

Reexamination Certificate

active

06933696

ABSTRACT:
There is described an image-forming apparatus having a rotation system constituted by a driving roller, a driven roller and a transfer belt, threaded on both the driving roller and the driven roller. The apparatus includes: a motor to drive the rotation system, a rotational axis of the motor being coupled to the driving roller directly or through a power transmission element disposed between them; a first rotational-velocity controlling section to control a first rotational velocity of the motor; a velocity detecting section to detect a second rotational velocity of the driving roller or the driven roller; and a second rotational-velocity controlling section to also control the first rotational velocity of the motor, based on a detected signal detected by the velocity detecting section. The second rotational-velocity controlling section employs either a feedback controlling method or a feed-forward controlling method to control the first rotational velocity.

REFERENCES:
patent: 4723145 (1988-02-01), Takada et al.
patent: 4876679 (1989-10-01), Mukai
patent: 5473445 (1995-12-01), Takei et al.
patent: 6158839 (2000-12-01), Fukushima et al.
patent: 6205918 (2001-03-01), Takahashi et al.
patent: 6311613 (2001-11-01), Takahashi
patent: 6625411 (2003-09-01), Yoda et al.
patent: 6760559 (2004-07-01), Koide

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