Image-forming device

Details Image-forming device Image-forming device

2005-04-05

2005-04-05

Nguyen, Lamson (Department: 2853)

Electrophotography

Control of electrophotography process

Control of fixing

C399S070000, C399S082000, C219S216000, C347S140000, C347S017000

Reexamination Certificate

active

06876823

ABSTRACT:
An image-forming device in which an image is formed on a transfer material by superposing the transfer material with a photosensitive material on a heating drum. By altering a duty ratio of a control signal from a controller to a heater driver, a heater is controlled such that surface temperature of the heating drum is fixed. At times other than during image-formation, during which precise control is required, the period of the control signal (i.e., of on/off control of the heater) is lengthened. Thus, “flicker” can be suppressed.

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