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    POWER SUPPLY DEVICE AND IMAGE FORMING APPARATUS
    1.
    发明申请
    POWER SUPPLY DEVICE AND IMAGE FORMING APPARATUS 审中-公开

    公开(公告)号：US20180287499A1

    公开(公告)日：2018-10-04

    申请号：US15903419

    申请日：2018-02-23

    Applicant: Konica Minolta Inc.

    Inventor： Yuhei TATSUMOTO ,  Masayuki WATANABE ,  Makoto SHIMAZOE ,  Akihiro HAYASHI

    IPC: H02M3/158 ,  H02M7/155

    CPC classification number: H02M3/1584 ,  H02M3/33507 ,  H02M7/1557 ,  H02M2001/0035 ,  H02M2001/0045 ,  H02M2003/1566 ,  Y02B70/16

    Abstract: A power supply device includes: a power supply circuit that converts an AC voltage into a DC voltage; and a control circuit that controls the power supply circuit, wherein the power supply circuit includes: a rectifying and smoothing circuit that rectifies and smoothes the AC voltage; a first voltage converting circuit that converts the voltage and outputs a first DC voltage; a second voltage converting circuit that switches the first DC voltage by a switching circuit to output a second DC voltage; a feedback circuit that detects and feeds back an output voltage of the first voltage converting circuit; and a selection circuit that switches a reference voltage of the feedback circuit, and the control circuit sets the switching circuit to be in a continuous connection state when a normal mode is shifted to a power saving mode and gradually switches the reference voltage.

    Image Forming Apparatus, Torque Rise Point Predicting Method, Computer Program, and Control System
    2.
    发明申请
    Image Forming Apparatus, Torque Rise Point Predicting Method, Computer Program, and Control System 审中-公开

    公开(公告)号：US20200159150A1

    公开(公告)日：2020-05-21

    申请号：US16689155

    申请日：2019-11-20

    Applicant: Konica Minolta, Inc.

    Inventor： Katsuhide SAKAI ,  Yasuhiro KOIDE ,  Toshiaki TANAKA ,  Akihiro HAYASHI

    IPC: G03G15/20

    Abstract: An image forming apparatus has a pad type fixing device in which a lubricant is interposed between a fixing belt for heating a sheet and a pad for holding the fixing belt, and includes: a controller that controls a heater of the fixing belt to maintain a fixing temperature to be set in accordance with printing modes, at a set temperature; an acquisitor that acquires torque of a motor for rotating the fixing belt as acquired torque for each of the set temperatures; a transition predictor that predicts transition of the torque of the motor for each of the set temperatures based on the acquired torque; and a point predictor that predicts a point at which at least two transition curves based on the predicted transition intersect each other as a torque rise point at which the torque of the motor starts rising due to a decrease in the lubricant.

    IMAGE FORMING DEVICE
    3.
    发明申请
    IMAGE FORMING DEVICE 审中-公开

    公开(公告)号：US20190227471A1

    公开(公告)日：2019-07-25

    申请号：US16243774

    申请日：2019-01-09

    Applicant: KONICA MINOLTA, INC.

    Inventor： Akihiro HAYASHI ,  Yuhei TATSUMOTO ,  Koji OHARA ,  Makoto SHIMAZOE ,  Yasuhiro KOIDE

    IPC: G03G15/00

    Abstract: An image forming device includes: a conductive roller that abuts the image carrier to rotate; a power supply circuit that applies voltage to the roller; a controller that controls the power supply circuit so as to apply the voltage to the roller over a predetermined detection period in a state in which the image carrier and the roller are rotated; a detection value acquirer that acquires a detection value acquired by the application of the voltage indicating a state of the image carrier in the detection period; and a state detector that detects a state of the image carrier on the basis of a plurality of acquired detection values, wherein a length of the detection period is set to a length at which both the numbers of rotations of the image carrier and the roller from a start of the detection period are integers.

    POWER SUPPLY DEVICE AND IMAGE FORMING DEVICE
    4.
    发明申请
    POWER SUPPLY DEVICE AND IMAGE FORMING DEVICE 有权

    公开(公告)号：US20170123368A1

    公开(公告)日：2017-05-04

    申请号：US15297663

    申请日：2016-10-19

    Applicant: Konica Minolta, Inc.

    Inventor： Masayuki WATANABE ,  Yuhei TATSUMOTO ,  Akihiro HAYASHI ,  Makoto SHIMAZOE

    IPC: G05F5/00 ,  G03G15/00 ,  H04N1/00

    CPC classification number: G03G15/80 ,  G03G2215/0132 ,  H02M3/335 ,  H02M3/337 ,  H02M3/338 ,  H04N1/00888 ,  H04N1/00904

    Abstract: A power supply device including: a transformer generating, from an input voltage, low output voltage and high output voltage; an upper limiter circuit receiving the high output voltage and controlling the high output voltage not to exceed a maximum; a power controller performing feedback control on the input voltage so that the low output voltage matches a target voltage; an operation mode acquirer configured to acquire an operation mode of an image forming device; and a target value controller configured to change the target voltage depending upon the acquired operation mode. The target voltage when consumption amount of current with the high output voltage is relatively great ensures that the high output voltage does not fall below a minimum of a rated voltage range of the high output voltage, and is higher than the target voltage when consumption amount of current with the high output voltage is relatively small.

    IMAGE DISPLAY AND PHOTOGRAPHING SYSTEM, PHOTOGRAPHING DEVICE, DISPLAY DEVICE, IMAGE DISPLAY AND PHOTOGRAPHING METHOD, AND COMPUTER-READABLE STORAGE MEDIUM FOR COMPUTER PROGRAM
    5.
    发明申请
    IMAGE DISPLAY AND PHOTOGRAPHING SYSTEM, PHOTOGRAPHING DEVICE, DISPLAY DEVICE, IMAGE DISPLAY AND PHOTOGRAPHING METHOD, AND COMPUTER-READABLE STORAGE MEDIUM FOR COMPUTER PROGRAM 有权
    图像显示和摄影系统，摄影设备，显示设备，图像显示和摄影方法以及用于计算机程序的计算机可读存储介质

    公开(公告)号：US20150324005A1

    公开(公告)日：2015-11-12

    申请号：US14706418

    申请日：2015-05-07

    Applicant: KONICA MINOLTA, INC.

    Inventor： Yuji KOBAYASHI ,  Harumitsu FUJIMORI ,  Akihiro HAYASHI ,  Shiro UMEDA ,  Kosuke MASUMOTO ,  Yasuhiro ISHIHARA ,  Hiroshi YAMAGUCHI ,  Isao WATANZABE

    IPC: G06F3/01 ,  G06F3/042

    CPC classification number: G06F3/01 ,  G06F3/017 ,  G06F3/0425 ,  G06F3/04842 ,  G06F3/0488 ,  H04N5/232 ,  H04N9/3179 ,  H04N9/3194

    Abstract: An image display and photographing system includes a display device configured to display a target image on a surface; a photographing device configured to photograph the surface; a first detector configured to detect that an object moves away from a space between the surface and the photographing device; a second detector configured to detect that, after the first detector detects that the object moves away from the space, the surface is touched at a predetermined position; a third detector configured to detect that, after the second detector detects that the surface is touched at the predetermined position, the object moves away from the space; and a photographing control portion configured to control, after the third detector detects that the object moves away from the space, the photographing device to photograph the surface.

    Abstract translation: 图像显示和拍摄系统包括被配置为在表面上显示目标图像的显示装置; 被配置为拍摄所述表面的拍摄装置; 第一检测器，被配置为检测物体远离所述表面和所述拍摄装置之间的空间; 第二检测器，被配置为检测在所述第一检测器检测到所述物体远离所述空间之后，所述表面在预定位置被触摸; 第三检测器，被配置为检测在所述第二检测器检测到所述表面在所述预定位置被触摸之后，所述物体远离所述空间; 以及拍摄控制部，被配置为在所述第三检测器检测到所述物体远离所述空间之后控制所述拍摄装置拍摄所述表面。

    IMAGE FORMING APPARATUS
    7.
    发明申请
    IMAGE FORMING APPARATUS 审中-公开

    公开(公告)号：US20200073301A1

    公开(公告)日：2020-03-05

    申请号：US16534426

    申请日：2019-08-07

    Applicant: KONICA MINOLTA, INC.

    Inventor： Katsuhide SAKAI ,  Yasuhiro KOIDE ,  Toshiaki TANAKA ,  Akihiro HAYASHI

    IPC: G03G15/20

    Abstract: An image forming apparatus forms an image on a sheet, and includes: a rotator used to form the image; a motor that drives the rotator rotationally; a current measurer that measures motor current flowing through a current-carrying path including a winding of the motor, at measurement timing that is timing after the motor starts up; a torque acquirer that acquires a torque value of the motor based on a measured value of the motor current; and a corrector that performs correction for cancellation of an amount of error based on one or both of a variation in characteristic corresponding to motor speed of the motor and a variation in characteristic corresponding to the motor current at the measurement timing, at the acquisition of the torque value by the torque acquirer.

    IMAGE FORMING APPARATUS
    9.
    发明申请
    IMAGE FORMING APPARATUS 有权
    图像形成装置

    公开(公告)号：US20160139531A1

    公开(公告)日：2016-05-19

    申请号：US14932434

    申请日：2015-11-04

    Applicant: Konica Minolta, Inc.

    Inventor： Makoto SHIMAZOE ,  Akihiro HAYASHI ,  Hiroyuki YOSHIKAWA ,  Toshikazu HIGASHI

    IPC: G03G15/02

    CPC classification number: G03G15/0266 ,  G03G15/0136 ,  G03G15/80

    Abstract: An image forming apparatus includes: a plurality of image forming units forming an image in the corresponding color by electrophotographic system; a high-voltage power supply circuit capable of generating a bias voltage; and a control unit that controls a first printing mode and a second printing mode, wherein in the second printing mode, the control unit performs such control that the photosensitive bodies provided on the image forming units not used in the second printing mode continuously rotate at a speed lower than a speed in the first printing mode, and/or such control that a bias voltage whose absolute value is less than an absolute value of a bias voltage in the first printing mode is supplied from the high-voltage power supply circuit to the processing components of the same type provided on the image forming units not used in the second printing mode.

    Abstract translation: 图像形成装置包括：多个图像形成单元，通过电子照相系统形成相应颜色的图像; 能够产生偏置电压的高压电源电路; 以及控制单元，其控制第一打印模式和第二打印模式，其中在所述第二打印模式中，所述控制单元执行这样的控制，使得设置在不在第二打印模式中使用的图像形成单元上的感光体在 速度低于第一打印模式中的速度，和/或这样的控制：将绝对值小于第一打印模式中的偏置电压的绝对值的偏置电压从高压电源电路提供给 处理在第二打印模式中未使用的图像形成单元上提供的相同类型的处理部件。

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