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公开(公告)号：US20210397119A1
公开(公告)日：2021-12-23
申请号：US17326676
申请日：2021-05-21
Applicant: Konica Minolta, Inc.
Inventor： Naoto SUGAYA , Kenji TAMAKI , Kenji YAMAMOTO , Tatsuo ISHIZUKA
Abstract: The present invention provides a recording medium detecting device, an image forming device, an image forming system, a recording medium detecting method, and a non-transitory recording medium storing a computer readable program capable of detecting a grain direction of a recording medium. A recording medium detecting device has: a sensor capable of detecting a recording medium from a first detection direction and a second detection direction different from the first detection direction; and a control unit. The control unit determines a grain direction of a recording medium from first surface property data obtained when the recording medium is detected from the first detection direction and second surface property data obtained when the recording medium is detected from the second detection direction.
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公开(公告)号：US20150028791A1
公开(公告)日：2015-01-29
申请号：US14332987
申请日：2014-07-16
Applicant: KONICA MINOLTA, INC.
Inventor： Takahiro TSUJIMOTO , Hideki NAKAMURA , Takeshi ISHIDA , Naoto SUGAYA , Akimasa ISHIKAWA
CPC classification number: H02P8/12 , G03G15/06 , G03G15/5008 , G03G15/6529
Abstract: An image forming apparatus drives and rotates at least one of a photosensitive drum and a transport roller with use of a stepping motor in a multi-phase excitation mode. The image forming apparatus includes: a constant-voltage control unit controlling the stepping motor by applying a constant voltage for each phase; a constant-current control unit controlling the stepping motor by regulating an amount of current for each phase by a chopping control; a measuring unit measuring a chopping count of each phase on a per-step basis; a chopping count determination unit determining whether the chopping count of each phase is less than or equal to a predetermined count; and a control switching unit causing the constant-voltage control unit to control the stepping motor when the chopping count determination unit determines affirmatively, and causing the constant-current control unit to control the stepping motor when the chopping count determination unit determines negatively.
Abstract translation: 图像形成装置利用多相励磁模式中的步进电机来驱动和旋转感光鼓和输送辊中的至少一个。 图像形成装置包括：恒压控制单元，通过对各相施加恒定电压来控制步进电动机; 恒流控制单元，其通过斩波控制来调节各相的电流量来控制所述步进电动机; 测量单元，测量每个阶段的每个阶段的切碎计数; 斩波计数确定单元，确定每相的斩波计数是否小于或等于预定计数; 以及控制切换单元，其使得所述恒压控制单元在所述切断计数确定单元肯定地确定时控制所述步进电机，并且当所述切断计数确定单元判定为否定时，使所述恒流控制单元控制所述步进电机。
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公开(公告)号：US20230375954A1
公开(公告)日：2023-11-23
申请号：US18306338
申请日：2023-04-25
Applicant: Konica Minolta, Inc.
Inventor： Shota IGO , Takashi NARA , Naoto SUGAYA , Kenji TAMAKI
CPC classification number: G03G15/0105 , G03G15/0189 , G03G15/0863 , G03G2215/00704 , G03G2215/047
Abstract: The image forming apparatus includes a crimping/release mechanism that switches between a crimping position where a transfer nip is formed and a release position where the intermediate transfer belt and the photosensitive drum are separated from each other, by moving at least one primary transfer section of a plurality of primary transfer sections provided facing a plurality of photosensitive drums respectively, and a processor that performs color misregistration adjustment when a combination of image forming units used for image formation is changed.
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Patent Agency Ranking
公开(公告)号：US20180267447A1
公开(公告)日：2018-09-20
申请号：US15914277
申请日：2018-03-07
Applicant: Konica Minolta, Inc.
Inventor： Shigetaka KATO , Seiichi KIRIKUBO , Yutaka YAMAMOTO , Naoto SUGAYA , Nobuhiro MATSUO
CPC classification number: G03G15/2039 , G03G15/5004 , G06K15/4055
Abstract: An image forming apparatus: acquires, before start of current supply to electric elements including heater, information indicating rated power of the heater and total consumption power of the electric elements excluding the heater; subtracts the total consumption power from upper power limit of the apparatus, and calculates maximum power not exceeding the rated power and remaining power thus subtracted; obtains duty ratio based on assumption of current supply corresponding to the maximum power according to pulse modulation, and determines whether the duty ratio falls within predetermined range; and controls, when the duty ratio falls within the range, drive circuit to supply alternating current by pulse modulation method, and when the duty ratio falls outside the range, to supply the alternating current by phase control method that temporarily interrupts the supply of the alternating current to the heater in half cycles of the alternating current.
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公开(公告)号：US20210311417A1
公开(公告)日：2021-10-07
申请号：US17219686
申请日：2021-03-31
Applicant: Konica Minolta, Inc.
Inventor： Keigo OGURA , Naoto SUGAYA , Hiroshi YAMAGUCHI , Tatsuo ISHIZUKA
Abstract: Provided is an image forming apparatus including an image carrier, a transfer unit, a driver, a hardware processor, an adjustment mechanism, and a speed detector. The hardware processor sets a command value. The hardware processor performs a constant-torque control based on a constant-speed drive torque detected in a constant-speed control. In the constant-torque control, the hardware processor performs a feedback control to set a reference value to an average speed of the driver during passage of a first sheet and calculate a difference from an average speed during passage of a subsequent sheet so as to derive the command value. The hardware processor determines whether a load torque increase, its factor, and/or its influence exceeds a threshold, and forcibly sets the reference value to a speed detected while a pressure between the transfer unit and the image carrier is reduced by the adjustment mechanism from the pressure during image transfer.
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公开(公告)号：US20210034002A1
公开(公告)日：2021-02-04
申请号：US16942901
申请日：2020-07-30
Applicant: Konica Minolta, Inc.
Inventor： Shota IGO , Keigo OGURA , Naoto SUGAYA , Hiroshi YAMAGUCHI
Abstract: An image forming apparatus includes the following, a pair of first conveying rollers, a pair of second conveying rollers, a driver which rotates and drives the second conveying rollers by a command value; and a controller which is able to control the driver to perform constant speed control to rotate the pair of second conveying rollers at a constant speed and to perform constant torque control to rotate the pair of second conveying rollers at a constant torque. When the constant torque control is performed, the controller starts the constant torque control with a predetermined initial torque. Based on sheet interval torque detected in a sheet interval term in which the pair of second conveying rollers do not sandwich and convey a sheet after the first sheet reaches the pair of second conveying rollers, the controller corrects the initial torque and calculates a command value for the next sheet.
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公开(公告)号：US20170272593A1
公开(公告)日：2017-09-21
申请号：US15452931
申请日：2017-03-08
Applicant: Konica Minolta, Inc.
Inventor： Masahiro KAMIYA , Naoto SUGAYA , Chao YE
CPC classification number: H04N1/00496 , G03G15/5016 , G03G15/553 , G03G21/1623 , G03G21/1638 , H04N1/00411 , H04N1/00543 , H04N2201/0094
Abstract: An image formation device for executing a printing job to form a toner image on a record sheet includes: an operation panel configured to move between a first position at which the operation panel protrudes from a front of a device body and a second position at which the operation panel is retracted to a device body side with respect to the first position; an acquisition device configured to obtain state information indicating a state of the device body; and a hardware processor configured to determine, based on the obtained state information, whether the state of the device body is a state requiring a user access to the device body or a state of accessing to the device body and to retract the operation panel to the second position when a determination result is positive.
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公开(公告)号：US20160170362A1
公开(公告)日：2016-06-16
申请号：US14964396
申请日：2015-12-09
Applicant: KONICA MINOLTA, INC.
Inventor： Chao YE , Naoto SUGAYA , Munehiro NATSUME , Nobuhiro MATSUO , Seiichi KIRIKUBO
CPC classification number: G03G15/6529 , B65H3/0669 , B65H5/06 , B65H5/062 , B65H2301/4452 , B65H2403/70 , B65H2403/72 , B65H2403/92 , B65H2511/22 , B65H2513/50 , B65H2515/702 , B65H2601/121 , B65H2601/122 , G03G15/6564 , G03G2215/00599 , G03G2215/0132 , B65H2220/01 , B65H2220/02
Abstract: An image forming apparatus includes an induced voltage detection portion configured to detect an induced voltage Vk in a motor; and an engagement/disengagement completion time detection portion configured to detect an engagement completion time and a disengagement completion time based on the induced voltage Vk detected by the induced voltage detection portion. The engagement completion time is a time at which engagement of a clutch is actually completed. The disengagement completion time is a time at which disengagement of the clutch is actually completed. A control portion determines a command timing based on any one of the engagement completion time and the disengagement completion time detected by the engagement/disengagement completion time detection portion, the command timing being a time at which a command is given to the clutch to perform an engaging operation or a disengaging operation.
Abstract translation: 图像形成装置包括：感应电压检测部，被配置为检测电动机中的感应电压Vk; 以及接合/分离完成时间检测部，其被配置为基于由感应电压检测部检测到的感应电压Vk来检测接合完成时间和分离完成时间。 接合完成时间是实际完成离合器的接合的时间。 分离完成时间是离合器的脱离实际完成的时间。 控制部基于由接合/分离完成时间检测部检测到的接合完成时间和分离完成时间中的任一个来确定命令定时，作为向离合器提供指令的时间的命令定时 接合操作或脱离操作。
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