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公开(公告)号：US09645529B2
公开(公告)日：2017-05-09
申请号：US14272630
申请日：2014-05-08
Applicant: KONICA MINOLTA, INC.
Inventor： Jun Onishi , Masahito Takano , Takashi Fujiwara
CPC classification number: G03G15/1615 , G03G15/5008 , G03G15/505 , G03G15/5054 , G03G15/5058 , G03G21/14 , G03G21/145 , G03G2215/00599 , G03G2215/0129 , G03G2215/0158
Abstract: An image forming apparatus includes upstream-side and downstream-side detection parts and a control section. The detection parts are disposed on a moving path of an intermediate transfer belt or a conveyor belt and detect a speed of the belt. The control section performs control to correct color misregistration of images composed of colors to be formed on the intermediate transfer belt or a recording medium conveyed by the conveyance belt on the basis of the detection result. The control unit calculates a difference between the speed detected by the upstream-side detection part and the speed detected by the downstream-side detection part after a predetermined time elapses since the upstream-side detection part detects the speed and performs the control on the basis of the difference. The predetermined time is obtained by dividing a distance between the detection parts by a target speed of the belt.
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公开(公告)号：US10161478B2
公开(公告)日：2018-12-25
申请号：US15420177
申请日：2017-01-31
Applicant: Konica Minolta, Inc.
Inventor： Masahito Takano , Jun Onishi , Takashi Fujiwara
Abstract: A driving device includes: a first driving source; a second driving source; a first gear to which a driving force is transmitted from the first driving source; a second gear to which a driving force is transmitted from the second driving source; a third gear that engages with the first gear and the second gear; and a fixation shaft that pivotally supports the third gear, the fixation shaft being disposed such that a center of the fixation shaft, a rotation center of the first gear and a rotation center of the second gear are disposed on a straight line in which the fixation shaft is provided through the third gear; and a hole having a diameter for compensating eccentricity of the first gear, the second gear and the third gear is formed in the third gear.
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公开(公告)号：US10025253B2
公开(公告)日：2018-07-17
申请号：US15054577
申请日：2016-02-26
Applicant: KONICA MINOLTA, INC.
Inventor： Takashi Fujiwara , Jun Onishi , Masahito Takano
Abstract: An image forming apparatus includes: a first roller having an elastic part; a second roller configured to form a nip between the first roller and the second roller; a holding member configured to hold the second roller; and a control section configured to control the position of the holding member such that the center distance between the first roller and the second roller is maintained at a constant value when a sheet passes through the nip.
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公开(公告)号：US20170219049A1
公开(公告)日：2017-08-03
申请号：US15420177
申请日：2017-01-31
Applicant: Konica Minolta, Inc.
Inventor： Masahito Takano , Jun ONISHI , Takashi Fujiwara
CPC classification number: F16H1/22 , F16H35/00 , F16H2035/001 , G03G15/2053 , G03G21/1647 , G03G2221/1657
Abstract: A driving device includes: a first driving source; a second driving source; a first gear to which a driving force is transmitted from the first driving source; a second gear to which a driving force is transmitted from the second driving source; a third gear that engages with the first gear and the second gear; and a fixation shaft that pivotally supports the third gear, the fixation shaft being disposed such that a center of the fixation shaft, a rotation center of the first gear and a rotation center of the second gear are disposed on a straight line in which the fixation shaft is provided through the third gear; and a hole having a diameter for compensating eccentricity of the first gear, the second gear and the third gear is formed in the third gear.
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公开(公告)号：US20140334855A1
公开(公告)日：2014-11-13
申请号：US14272630
申请日：2014-05-08
Applicant: KONICA MINOLTA, INC.
Inventor： Jun ONISHI , Masahito Takano , Takashi Fujiwara
IPC: G03G15/01
CPC classification number: G03G15/1615 , G03G15/5008 , G03G15/505 , G03G15/5054 , G03G15/5058 , G03G21/14 , G03G21/145 , G03G2215/00599 , G03G2215/0129 , G03G2215/0158
Abstract: An image forming apparatus includes upstream-side and downstream-side detection parts and a control section. The detection parts are disposed on a moving path of an intermediate transfer belt or a conveyor belt and detect a speed of the belt. The control section performs control to correct color misregistration of images composed of colors to be formed on the intermediate transfer belt or a recording medium conveyed by the conveyance belt on the basis of the detection result. The control unit calculates a difference between the speed detected by the upstream-side detection part and the speed detected by the downstream-side detection part after a predetermined time elapses since the upstream-side detection part detects the speed and performs the control on the basis of the difference. The predetermined time is obtained by dividing a distance between the detection parts by a target speed of the belt.
Abstract translation: 图像形成装置包括上游侧和下游侧检测部以及控制部。 检测部件设置在中间转印带或传送带的移动路径上并检测带的速度。 控制部进行基于检测结果的中间转印带或由输送带输送的记录介质上形成的颜色的图像的颜色不对齐的控制。 控制单元计算从上游侧检测部检测到的速度经过预定时间后由上游侧检测部检测到的速度与由下游侧检测部检测出的速度之间的差异，并且基于该上限侧检测部 的区别。 通过将检测部之间的距离除以带的目标速度来获得预定时间。
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Patent Agency Ranking
公开(公告)号：US10459378B2
公开(公告)日：2019-10-29
申请号：US15964141
申请日：2018-04-27
Applicant: KONICA MINOLTA, INC.
Inventor： Takashi Fujiwara , Jun Onishi , Masahito Takano
Abstract: An image forming apparatus includes: a driving roller that conveys a paper sheet; a detector that detects a desired point on the driving roller; and a hardware processor that: acquires a waveform signal indicating one of a change in an image forming position with respect to the paper sheet and a change in a sheet conveyance velocity; extracts a synchronous waveform signal from the waveform signal acquired by the hardware processor, the synchronous waveform signal being synchronized with one revolution of the driving roller, the one revolution being detected by the detector; and inputs a drive signal to a drive source of the driving roller, the drive signal being input to weaken an amplitude of the synchronous waveform signal extracted by the hardware processor.
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公开(公告)号：US10359717B2
公开(公告)日：2019-07-23
申请号：US15916810
申请日：2018-03-09
Applicant: Konica Minolta, Inc.
Inventor： Masahito Takano , Jun Onishi , Takashi Fujiwara
Abstract: An image forming apparatus includes: a photosensitive drum; a driving roller that drives a transfer member; a facing roller facing the driving roller; a driver that drives one of the photosensitive drum, the driving roller, and the facing roller; and a hardware processor that: acquires carry-in fluctuation information of speed fluctuation of any one of the photosensitive drum, the driving roller, and the facing roller when a sheet member is carried into the transfer member; detects carry-in fluctuation timing of the speed fluctuation of any one of the photosensitive drum, the driving roller, and the facing roller that occurs when the sheet member is carried into the transfer member; predicts carry-out fluctuation timing of speed fluctuation of any one of the photosensitive drum, the driving roller, and the facing roller that occurs when the sheet member is carried from the transfer member; and performs feedforward control on the driver.
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公开(公告)号：US09914604B2
公开(公告)日：2018-03-13
申请号：US15334960
申请日：2016-10-26
Applicant: Konica Minolta, Inc.
Inventor： Takashi Fujiwara , Jun Onishi , Masahito Takano
CPC classification number: B65H3/02 , B65H1/04 , B65H3/047 , B65H3/126 , B65H3/128 , B65H3/48 , B65H3/56 , B65H3/60 , B65H2403/512 , B65H2404/52131 , B65H2404/563 , B65H2405/1134 , G03G15/6511 , G03G15/6529
Abstract: A sheet feeder device includes: a sheet feed tray configured to store a sheet stack formed with a plurality of paper sheets; an elastic member capable of expanding and contracting; a contact mechanism configured to bring the elastic member into contact with an edge of the sheet stack; an expansion mechanism configured to expand the elastic member in a direction of stacking of the paper sheets; and a control unit configured to cause the expansion mechanism to expand the elastic member while the elastic member is kept in contact with the edge of the sheet stack by the contact mechanism.
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公开(公告)号：US09939759B2
公开(公告)日：2018-04-10
申请号：US15287238
申请日：2016-10-06
Applicant: KONICA MINOLTA, INC.
Inventor： Jun Onishi , Masahito Takano , Takashi Fujiwara
IPC: G03G15/16
CPC classification number: G03G15/1615 , G03G2215/0129
Abstract: A belt tension adjustment mechanism provided on an inner side of an endless intermediate transfer belt and applying a tension to the intermediate transfer belt being rotated when a toner image is transferred on the intermediate transfer belt, said belt tension adjustment mechanism includes a holder having an opening section at one surface thereof; and an elastic member contained to be fixed in the holder while being compressed in a running direction of the intermediate transfer belt and having a convex section, wherein the convex section protrudes from the opening section of the holder toward a direction orthogonal to an image transfer surface of the intermediate transfer belt and is in direct contact with the intermediate transfer belt.
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10.发明授权Image forming apparatus that adjusts a differential speed between a surface of a fixing belt and a surface of a pressure roller based on a detected torque of a motor that drives the pressure roller 有权图像形成装置，其基于检测到的驱动压力辊的电动机的扭矩来调节定影带的表面与压力辊的表面之间的差速公开(公告)号：US09250587B2
公开(公告)日：2016-02-02
申请号：US14294432
申请日：2014-06-03
Applicant: KONICA MINOLTA, INC.
Inventor： Takeshi Tamada , Kenji Izumiya , Satoshi Ogata , Masahito Takano
IPC: G03G15/20
CPC classification number: G03G15/2064 , G03G15/2028 , G03G2215/2032 , G03G2215/2045
Abstract: An image forming apparatus comprises a drive motor configured to rotate the lower pressure roller, a torque generation unit for generating a braking force in the direction to hinder rotation of a fixing belt in order to adjust the differential speed between the surface speed of the fixing belt and the surface speed of the lower pressure roller, and a control unit for adjusting the braking force generated by the torque generation unit. The control unit adjusts the braking force generated by the torque generation unit to decrease if the rotational torque of the drive motor is larger than a predetermined target torque, and increase if the rotational torque of the drive motor is smaller than the predetermined target torque.
Abstract translation: 图像形成装置包括：驱动电动机，其被配置为使下压力辊旋转;扭矩产生单元，用于在阻止定影带旋转的方向上产生制动力，以便调节定影带的表面速度之间的差速 以及下压辊的表面速度，以及用于调整由转矩产生单元产生的制动力的控制单元。 如果驱动电机的旋转转矩大于预定目标转矩，则控制单元调整由转矩产生单元产生的制动力，如果驱动电动机的旋转转矩小于预定目标转矩，则增大。
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