System for drive control of toner agitator in image-forming...

Details System for drive control of toner agitator in image-forming... System for drive control of toner agitator in image-forming...

G - Physics

03

G

314/32, 314/7

G03G 15/08 (2006.01)

Patent

CA 1326877

SYSTEM FOR DRIVE CONTROL OF TONER AGITATOR IN IMAGE-FORMING APPARATUS ABSTRACT OF THE DISCLOSURE In an image-forming apparatus (1), such as an electro-graphic printer, in which an electro-static latent image formed on an photoconductive drum (5) is reproduced by a toner (15), comprising a pulse motor (M) for driving an agitator (13) built-in to a developer unit (8), the agitator (13) is controlled during an initialization process of the apparatus (1) by setting the rotational speed of the motor (M) at a lower level (P) upon a start-up thereof, and converting the same to a higher level (N) corresponding to the normal operational speed after a predetermined period (T1) has passed from the start-up, whereby a larger torque is generated from the motor (M) at the start-up stage of the initialization so that the agitator (13) can be smoothly rotated even if the toner (15) has solidified in the developer unit (8).

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