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    Stiffness measuring device, image forming system, and stiffness measuring method
    1.
    发明授权
    Stiffness measuring device, image forming system, and stiffness measuring method 有权

    公开(公告)号：US12197158B2

    公开(公告)日：2025-01-14

    申请号：US18220300

    申请日：2023-07-11

    Applicant: KONICA MINOLTA, INC.

    Inventor： Yasuo Koyanagi ,  Kazumichi Yoshida ,  Yoshihito Sasamoto ,  Kazutoshi Yoshimura

    IPC: G03G15/00

    Abstract: A stiffness measuring device includes a holding portion that holds a recording material so that a recording surface of the recording material is substantially parallel to a vertical direction, a pressing portion, and a stiffness acquiring section. The pressing portion presses a measurement point located on a lower side in the vertical direction than the portion of the recording material held by the holding portion. The stiffness acquiring section measures a reaction force obtained when the measurement point is pressed by the pressing portion and acquires the measured reaction force as the stiffness of the recording material.

    Image forming device
    4.
    发明授权
    Image forming device 有权

    公开(公告)号：US11300911B2

    公开(公告)日：2022-04-12

    申请号：US17315877

    申请日：2021-05-10

    Applicant: KONICA MINOLTA, INC.

    Inventor： Yasuhiro Koide ,  Yoshihito Sasamoto ,  Makoto Shimazoe ,  Yuhei Tatsumoto

    IPC: G03G15/00

    Abstract: An image forming device includes: a transfer unit transferring a toner image to a sheet; a resistance measurement member disposed on the upstream side in a sheet carriage direction of the transfer unit and for measuring resistance of the sheet; a charge elimination member disposed between the transfer unit and the resistance measurement member in the sheet carriage direction; a first voltage applying unit applying voltage for resistance measurement to the resistance measurement member; and a second voltage applying unit applying voltage of reverse bias of the voltage for resistance measurement to the charge elimination member. The width of a charge elimination region by the charge elimination member is wider than that of a charged region by the resistance measurement member in a direction perpendicular to the sheet carriage direction. The absolute value of the voltage for charge elimination is smaller than that of the voltage for resistance measurement.

    Image Forming Apparatus Provided With Fixing Unit for Fixing Images Formed on Paper and Method of Controlling Heaters of the Apparatus
    5.
    发明申请
    Image Forming Apparatus Provided With Fixing Unit for Fixing Images Formed on Paper and Method of Controlling Heaters of the Apparatus 有权
    具有固定在纸上形成的图像的固定装置的图像形成装置和装置的加热器的控制方法

    公开(公告)号：US20130302058A1

    公开(公告)日：2013-11-14

    申请号：US13887190

    申请日：2013-05-03

    Applicant: KONICA MINOLTA, INC.

    Inventor： Akinori Kimata ,  Yoshihito Sasamoto ,  Tadayuki Ueda ,  Toru Kasamatsu ,  Eiji Nishikawa ,  Takanobu Shiki

    IPC: G03G15/20

    CPC classification number: G03G15/205 ,  G03G15/2003 ,  G03G15/2039 ,  G03G15/2042 ,  G03G15/2064 ,  G03G15/5004 ,  G03G2215/2016

    Abstract: An image forming apparatus includes a plurality of heaters 56 for heating the fixing roller 52, a plurality of temperature sensors 57 for detecting the temperatures of the areas to be heated by the plurality of heaters 56 respectively, and a control unit 11 for turning on and off the plurality of heaters 56 on the basis of the temperatures detected by the plurality of temperature sensors 57. If one of the heaters 56 is on when the area to be heated by the other heater cools down to the ON temperature, the control unit 11 turns on the other heater with the same timing as the one heater is turned off.

    Abstract translation: 图像形成装置包括用于加热定影辊52的多个加热器56，用于分别检测由多个加热器56加热的区域的温度的多个温度传感器57和用于打开的控制单元11， 基于由多个温度传感器57检测到的温度来关闭多个加热器56.如果另一个加热器的待加热区域冷却至接通温度时，加热器56中的一个加热器接通，则控制单元11 以与一个加热器关闭的时间相同的时间打开另一个加热器。

    Excessive heating protection circuit and image forming apparatus
    6.
    发明授权
    Excessive heating protection circuit and image forming apparatus 有权

    公开(公告)号：US09709931B2

    公开(公告)日：2017-07-18

    申请号：US15227336

    申请日：2016-08-03

    Applicant: Konica Minolta, Inc.

    Inventor： Katsuyuki Ikuta ,  Takeshi Tamada ,  Yoshihito Sasamoto ,  Hiroshi Eguchi

    IPC: G03G15/20 ,  H02H5/04

    CPC classification number: G03G15/2017 ,  G03G15/2039 ,  G03G15/55 ,  H02H5/042

    Abstract: An excessive heating protection circuit to be connected to a first temperature sensor being configured to output less voltage with a rise in temperature and a second temperature sensor being configured to output more voltage with a rise in temperature. The excessive heating protection circuit includes: a multiplexer having a plurality of channels capable of receiving reference voltages predetermined for the first and second temperature sensors, the multiplexer being configured to output one of the reference voltages by selecting one of the channels with reference to input selection signals; a first comparator being configured to compare the output voltage of the first temperature sensor to the output reference voltage of the multiplexer and to output a comparison result; and a second comparator being configured to compare the output voltage of the second temperature sensor to the output reference voltage of the multiplexer and to output a comparison result.

    Image forming apparatus
    7.
    发明授权
    Image forming apparatus 有权
    图像形成装置

    公开(公告)号：US09261841B2

    公开(公告)日：2016-02-16

    申请号：US14162089

    申请日：2014-01-23

    Applicant: Konica Minolta, Inc.

    Inventor： Teruhiko Fujikura ,  Satoshi Miyajima ,  Tadayuki Ueda ,  Yoshihito Sasamoto ,  Eiji Nishikawa ,  Takanobu Shiki ,  Akinori Kimata

    IPC: G03G15/01 ,  G03G15/00

    CPC classification number: G03G15/5058 ,  G03G15/0189 ,  G03G2215/0132 ,  G03G2215/0161

    Abstract: An image forming apparatus forms decision registration mark for deciding whether or not a color registration correction for correcting color shifts in the color image carries out on an intermediate transfer belt. The decision registration mark is formed by registering four color registration marks. Color registration sensors detect a detection width of the decision registration mark along a sub scanning direction. A control portion receives the detection width of the decision registration mark and decides whether or not the color registration correction carries out based on whether or not the detection width of the decision mark detected by the detection portion exceeds the period of reference time. When the detection width of the decision mark detected by the detection portion exceeds the period of reference time, the control portion carries out the color registration correction.

    Abstract translation: 图像形成装置形成用于判定在中间转印带上执行用于校正彩色图像中的颜色偏移的颜色对准校正​​的判定登记标记。 通过登记四个颜色配准标记形成决定登记标记。 颜色配准传感器检测沿副扫描方向的判定对准标记的检测宽度。 控制部分接收判定登记标记的检测宽度，并且基于检测部分检测到的判定标记的检测宽度是否超​​过参考时间周期来判定颜色登记校正是否被执行。 当由检测部分检测到的判定标记的检测宽度超过参考时间周期时，控制部分执行颜色配准校正。

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