IMAGE FORMING APPARATUS THAT DECIDES MALFUNCTION, AND MALFUNCTION DECIDING METHOD

    公开(公告)号:US20240176274A1

    公开(公告)日:2024-05-30

    申请号:US18517032

    申请日:2023-11-22

    CPC classification number: G03G15/6567 G03G2215/0158

    Abstract: An image forming apparatus includes an image carrier, an optical member, a drive device, a motive device, and a control device. On a surface of the image carrier, a scanning line is formed, through a scanning operation with scanning light. The optical member emits the scanning light to the image carrier. The drive device changes a posture of the optical member, to adjust a skew of the scanning line on the image carrier. The motive device drives the drive device. The control device controls the motive device. Further, the control device decides that at least one of the drive device and the motive device are malfunctioning, when a skew amount remains higher than a predetermined permissible value, despite changing the posture of the optical member a predetermined number of times, through control of the drive device by the motive device.

    SCANNING DEVICE AND DISTANCE MEASURING DEVICE

    公开(公告)号:US20230120686A1

    公开(公告)日:2023-04-20

    申请号:US17905852

    申请日:2021-03-03

    Abstract: Provided is a scanning device including a first irradiation unit, a second irradiation unit, a scanning unit, a waveguide unit, and a detection unit. The first irradiation unit radiates a first electromagnetic wave for scanning an object of interest. The second irradiation unit radiates a second electromagnetic wave. The scanning unit deflects and outputs the first electromagnetic wave radiated by the first irradiation unit and the second electromagnetic wave radiated by the second irradiation unit. The waveguide unit guides at least part of the second electromagnetic wave, output by the scanning unit, in a different direction from the first electromagnetic wave. The detection unit detects the second electromagnetic wave guided in the different direction from the first electromagnetic wave by the waveguide unit.

    OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE SAME

    公开(公告)号:US20180181021A1

    公开(公告)日:2018-06-28

    申请号:US15846623

    申请日:2017-12-19

    Inventor: Hideji MIZUTANI

    CPC classification number: G03G15/043 G03G15/5058

    Abstract: In an optical scanning device, light emitting start timings of light emitting parts with respect to a reference light emitting part are stored in a storage part. In a correction mode, a light emitting timing correction control part performs first control for allowing positions of beam spots of the light beams emitted from the light emitting parts to be equal to each other, second control for allowing a light emitting part LD4 to emit a light beam at a plurality of different start timings and patch images to be formed on a intermediate transfer belt 281, and third control for correcting light emitting start timings of light emitting parts LD2 to LD4 on the basis of the start timing of the light emitting part LD4 at which the patch images has the highest concentration.

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