Invention Grant
- Patent Title: Image forming apparatus with detection of abnormality of power source device or an optical scanning device
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Application No.: US16123983Application Date: 2018-09-06
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Publication No.: US10942480B2Publication Date: 2021-03-09
- Inventor: Hajime Motoyama
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A., Inc. IP Division
- Priority: JPJP2017-174395 20170911
- Main IPC: G03G15/00
- IPC: G03G15/00 ; G03G15/20 ; G03G15/043 ; G03G15/04
Abstract:
In an image forming apparatus, if a controller detects an abnormality in an output voltage of the power source device, the controller notifies the abnormality of the power source device. If the controller detects no abnormality in the output voltage after image data is input and before a scanner motor is activated in response to the input of the image data, the controller activates the scanner motor. If a rotary polygon mirror does not reach a target speed within a predetermined time, the controller re-detects whether there is an abnormality in the output voltage. If the controller detects an abnormality in the output voltage, the controller notifies the abnormality of the power source device. If the controller detects no abnormality in the output, the controller notifies the abnormality of the optical scanning device.
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