Invention Grant
US09335677B2 Fixing apparatus for fixing images formed on sheet and image forming apparatus provided with this fixing apparatus 有权
固定装置,用于固定形成在具有该定影装置的纸张和图像形成装置上形成的图像

Fixing apparatus for fixing images formed on sheet and image forming apparatus provided with this fixing apparatus
Abstract:
A fixing apparatus comprises a fixing nip width adjustment unit configured to adjust the fixing nip width of a fixing nip portion; a braking force generation motor configured to generate an effective braking force in the direction to hinder rotation of an upper pressure roller; and a control unit configured to perform restore control for rotating the upper pressure roller and a lower pressure roller by driving a drive motor and speed keeping control for keeping the rotational speed of the braking force generation motor no higher than a predetermined speed during the restore control in a non-fixing period in which the fixing nip width adjustment unit is controlled to decrease the fixing nip width smaller than in a fixing period and a braking force is applied to the fixing side member by the braking force generation motor.
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