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公开(公告)号：US20190152733A1
公开(公告)日：2019-05-23
申请号：US16182888
申请日：2018-11-07
Applicant: KONICA MINOLTA, INC.
Inventor： Satoshi MIYAJIMA , Hiroshi OYAMA , Remi ISHIKAWA , Tadayuki UEDA
Abstract: A drive apparatus according to the present invention includes a first motor that transmits power to a rotating shaft of a conveyance roller for conveying a sheet, a second motor that transmits power to the rotating shaft of the conveyance roller, a storage that stores information indicating the driving force of the second motor during a period in which the conveyance roller conveys the sheet; and a controller that drives the second motor with the driving force indicated by the information during a period when the conveyance roller conveys the sheet, wherein the controller changes the information stored in the storage according to a load applied to the conveyance roller during the period when the conveyance roller conveys the sheet, and drives the second motor with a driving force indicated by the information after the change during a period when the conveyance roller conveys a next sheet.
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公开(公告)号：US20180334342A1
公开(公告)日：2018-11-22
申请号：US15972580
申请日：2018-05-07
Applicant: Konica Minolta, Inc.
Inventor： Satoshi MIYAJIMA , Takanobu SHIKI , Tadayuki UEDA , Hiroshi OYAMA , Remi ISHIKAWA
CPC classification number: B65H7/00 , B65H5/06 , B65H5/062 , B65H7/06 , B65H2403/92 , B65H2403/943 , B65H2403/944 , B65H2511/212 , B65H2513/212 , B65H2515/32 , B65H2555/25 , B65H2555/26 , B65H2801/06 , G03G15/50 , G03G15/6529 , G03G15/80 , G03G2215/00679 , G03G2221/1657 , B65H2220/01 , B65H2220/02
Abstract: A sheet conveying apparatus includes: a plurality of conveyors provided along a sheet conveying direction; a plurality of main driving parts that is respectively provided to the plurality of conveyors and independently drives the conveyors; an auxiliary driving part that drives the plurality of conveyors; and a transmitter that transmits driving force between the plurality of conveyors and transmits driving force of the auxiliary driving part to the plurality of conveyors.
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公开(公告)号：US20160327890A1
公开(公告)日：2016-11-10
申请号：US15145978
申请日：2016-05-04
Applicant: KONICA MINOLTA, INC.
Inventor： Takanobu SHIKI , Tadayuki UEDA , Eiji NISHIKAWA , Yukinobu IGUCHI , Satoshi MIYAJIMA , Yohei YAMADA
IPC: G03G15/20
CPC classification number: G03G15/2039 , G03G15/6594 , G03G2215/00738
Abstract: An image forming apparatus detects that the temperature of a fixing member reaches a lower limit value at which the temperature once reduced by the start of a heating and fixing process to a paper turns to rise, after an image forming operation starts, and determines the type of the paper based on at least one of an elapsed time from a predetermined reference time point after the image forming operation starts to a time point at which it is detected that the temperature reaches the lower limit value, and a temperature difference between the temperature of the fixing member at the reference time point and the lower limit value.
Abstract translation: 图像形成装置检测在图像形成操作开始之后，定影构件的温度达到在开始加热定影处理之后一度减少到纸张的温度上升的下限值，并且确定类型 基于从图像形成操作开始之后的预定基准时间点到检测到温度达到下限值的时间点的经过时间中的至少一个，以及温度达到下限值之间的温度差 基准时刻的固定部件和下限值。
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4.发明申请公开(公告)号：US20200255248A1
公开(公告)日：2020-08-13
申请号：US16773188
申请日：2020-01-27
Applicant: KONICA MINOLTA, INC.
Inventor： Remi ISHIKAWA , Eiji NISHIKAWA , Satoshi MIYAJIMA , Masayuki FUKUNAGA
Abstract: An image forming apparatus that has a transfer device that includes an intermediate transfer belt that is tensioned by a plurality of support rollers, a secondary transfer roller that faces one of the support rollers via the intermediate transfer belt, a cam that adjust a pressing force that presses the intermediate transfer belt by the secondary transfer roller, a motor that drives the cam, and a conveyor that conveys a recording medium to a transfer nip formed between the intermediate transfer belt and the secondary transfer roller is provided with a controller that controls an operation of the motor. The controller executes first control of operating the motor with a constant torque and stopping the motor when a rotation angular speed of the motor is less than or equal to a first threshold and second control of operating the motor at a predetermined timing to adjust a transfer nip amount.
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公开(公告)号：US20180150014A1
公开(公告)日：2018-05-31
申请号：US15804697
申请日：2017-11-06
Applicant: KONICA MINOLTA, INC.
Inventor： Satoshi MIYAJIMA , Takanobu SHIKI , Hiroshi OYAMA , Remi ISHIKAWA , Tadayuki UEDA
IPC: G03G15/00
CPC classification number: G03G15/6502 , G03G15/6511 , G03G15/6561
Abstract: An image forming apparatus includes the following. An upstream second conveying roller and a downstream second conveying roller form a loop on the long sheet. A deviation amount detector detects a deviation amount of the long sheet. A loop amount detector detects a loop amount in two positions in a width direction. A speed controller controls a rotating speed of the upstream second conveying roller and the downstream second conveying roller based on a deviation amount and a difference of loop amounts in two positions. Each of the upstream second conveying roller and the downstream second conveying roller includes a near roller and a far roller. The speed controller controls the rotating speed of the near roller and the far roller based on the deviation amount and the difference of the loop amounts in the two positions.
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Patent Agency Ranking
公开(公告)号：US20230008381A1
公开(公告)日：2023-01-12
申请号：US17854777
申请日：2022-06-30
Applicant: Konica Minolta, Inc.
Inventor： Yuta TACHIBANA , Hiroyuki YOSHIKAWA , Kazumichi YOSHIDA , Satoshi MIYAJIMA , Kouei CHO
Abstract: A rotation detector includes a motor, a current detector and a hardware processor. The motor includes coils of two or more phases and a rotor. The current detector detects currents flowing in coils of at least two phases among the coils of two or more phases. The hardware processor estimates an initial position of the rotor based on current values of the currents detected by the current detector to start the motor, controls an energization pattern on the phases to rotate and start the motor based on the estimated initial position, and determines whether the rotor stops or is rotating before completing the estimation of the initial position.
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公开(公告)号：US20190127168A1
公开(公告)日：2019-05-02
申请号：US16171398
申请日：2018-10-26
Applicant: KONICA MINOLTA, INC.
Inventor： Satoshi MIYAJIMA , Hiroshi OYAMA , Remi ISHIKAWA , Tadayuki UEDA
Abstract: A drive apparatus according to the present invention includes a stepping motor that transmits power to a rotating shaft of a conveyance roller, a brushless motor that transmits power to the rotating shaft of the conveyance roller, a first controller that controls an operation of the stepping motor so that the stepping motor rotates at a constant speed, and a second controller that controls an operation of the brushless motor. The second controller switches control of the brushless motor between, in accordance with a conveyance state of the sheet, assist control in which power of the brushless motor assists a rotation of the stepping motor, brake control in which power of the brushless motor prevents the rotation of the stepping motor, and neutral control in which power of the brushless motor does not affect the rotation of the stepping motor.
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公开(公告)号：US20180334341A1
公开(公告)日：2018-11-22
申请号：US15970447
申请日：2018-05-03
Applicant: Konica Minolta, Inc.
Inventor： Satoshi MIYAJIMA , Takanobu SHIKI , Tadayuki UEDA , Hiroshi OYAMA , Remi ISHIKAWA
CPC classification number: B65H5/062 , B41J13/0009 , B41J15/042 , B65H2801/06
Abstract: A sheet conveying apparatus includes: a plurality of driving parts each connected to one end of corresponding one of a respective plurality of rotating shafts; a first torque adjuster connected to another end of each of the plurality of rotating shafts, the first torque adjuster applying first torque to the plurality of driving parts; a second torque adjuster that applies, to the driving parts, second torque for adjusting the first torque to be applied to the driving parts by the first torque adjuster; and a hardware processor that controls the second torque to be applied to the driving parts in the second torque adjuster in accordance with a number of revolutions of the driving part.
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公开(公告)号：US20180164726A1
公开(公告)日：2018-06-14
申请号：US15815888
申请日：2017-11-17
Applicant: Konica Minolta, Inc.
Inventor： Takanobu SHIKI , Tadayuki UEDA , Hiroshi OYAMA , Satoshi MIYAJIMA , Remi ISHIKAWA
IPC: G03G15/00
CPC classification number: G03G15/50 , B65H3/128 , B65H3/48 , B65H7/20 , B65H9/006 , B65H85/00 , B65H2301/33312 , B65H2404/1424 , B65H2513/10 , B65H2513/50 , B65H2515/212 , B65H2701/1315 , G03G15/6529 , G03G15/6567 , B65H2220/01 , B65H2220/02
Abstract: An image forming apparatus includes: a conveyor that conveys a sheet; a detector that detects an end position of the sheet conveyed by the conveyor in a second direction orthogonal to a first direction being a conveyance direction; a corrector that corrects deviation of the sheet by moving the sheet in the second direction on the basis of a detection result of the end position of the sheet in the second direction detected by the detector, and a hardware processor that obtains variation information based on the end position of the sheet detected by the detector, and adjusts an interval of the conveyed sheet while controlling operation of the corrector on the basis of the obtained variation information.
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公开(公告)号：US20160327889A1
公开(公告)日：2016-11-10
申请号：US15135027
申请日：2016-04-21
Applicant: Konica Minolta, Inc.
Inventor： Takanobu SHIKI , Tadayuki UEDA , Eiji NISHIKAWA , Yukinobu IGUCHI , Satoshi MIYAJIMA , Yohei YAMADA
IPC: G03G15/20
CPC classification number: G03G15/2039 , G03G15/205
Abstract: In an image forming apparatus according to the present invention, when an image forming operation is started from a standby state, electric power is supplied to a heater by switching to a first fixing control to turn on and off the heater to heat a heating roller with a fixed duty ratio based on the detected temperature of the heating roller, and thereafter, when detecting a state that the falling detected temperature reaches a lower limit value at which the detected temperature turns to rising, electric power is supplied to the heater by switching to a second fixing control which changes a duty ratio in accordance with a temperature difference between the detected temperature and a target control temperature.
Abstract translation: 在根据本发明的图像形成装置中，当从待机状态开始图像形成操作时，通过切换到第一定影控制来将加热器供电到加热器，以加热加热器以加热加热辊， 基于加热辊的检测温度的固定占空比，此后，当检测到下降的检测温度达到检测温度升高的下限值的状态时，通过切换到 第二定影控制，其根据检测温度和目标控制温度之间的温度差改变占空比。
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