Invention Grant
- Patent Title: Image forming apparatus that includes a transfer member that can be separated from an inner circumferential surface of a transfer belt when belt is rotating
- Patent Title (中): 图像形成装置，包括当带旋转时能够与转印带的内周面分离的转印部件
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Application No.: US13339137Application Date: 2011-12-28
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Publication No.: US08380097B2Publication Date: 2013-02-19
- Inventor: Hiroyuki Seki , Yoshiro Saito , Kazuhiro Funatani , Masahide Hirai
- Applicant: Hiroyuki Seki , Yoshiro Saito , Kazuhiro Funatani , Masahide Hirai
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon USA Inc IP Division
- Priority: JP2008-250527 20080929; JP2009-213340 20090915
- Main IPC: G03G15/16
- IPC: G03G15/16 ; G03G15/01
Abstract:
An image forming apparatus includes a transfer roller that can be separated from an intermediate transfer belt. When an operational mode is switched from a multicolor mode to a mono-color mode, the image forming apparatus changes a rotational speed of the intermediate transfer belt to a level slower than a rotational speed of the intermediate transfer belt to be set in the multicolor mode to transfer a toner image to the intermediate transfer belt, then separates a first transfer member from the intermediate transfer belt, and after the first transfer member is separated from the intermediate transfer belt, the image forming apparatus increases the rotational speed of the intermediate transfer belt to a rotational speed to be set in the mono-color mode to transfer the toner image to the intermediate transfer belt.
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