公开(公告)号：US10766252B2

公开(公告)日：2020-09-08

申请号：US16502961

申请日：2019-07-03

Applicant: Konica Minolta, Inc.

Inventor： Yasuhiro Ishihara ,  Yuhei Tatsumoto ,  Toshikazu Higashi ,  Makoto Shimazoe

IPC: B41J2/045

Abstract: A heater includes: a planar heat generator; a power supply circuit that controls supply of power to the planar heat generator; a plurality of temperature sensors that is provided on the planar heat generator and measures a temperature; and a hardware processor that detects abnormality of the temperature sensor in a case where a difference in temperature measured by each of two of the temperature sensors out of the plurality of temperature sensors exceeds an abnormality threshold value after a predetermined waiting time has elapsed since the supply of power to the planar heat generator is stopped.

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.

公开(公告)号：US10474079B2

公开(公告)日：2019-11-12

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 an 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.

公开(公告)号：US10234814B2

公开(公告)日：2019-03-19

申请号：US15890991

申请日：2018-02-07

Applicant: KONICA MINOLTA, INC.

Inventor： Makoto Shimazoe ,  Masayuki Watanabe ,  Yuhei Tatsumoto ,  Akihiro Hayashi

IPC: G03G15/00 ,  H02M7/06 ,  H01F38/00 ,  H02M1/00

Abstract: A power supply apparatus includes: a first primary winding; a first AC voltage outputter connected to one side of the first primary winding so as to output a first AC voltage; a second AC voltage outputter connected to the other side of the first primary winding and capable of outputting a second AC voltage with an inverted phase of the first AC voltage; a first secondary winding that generates a third AC voltage by mutual induction of the first primary winding to which the first AC voltage and the second AC voltage are applied; a second primary winding having one side receiving an input of the second AC voltage and the other side connected to a fixed voltage; and a second secondary winding that generates a fourth AC voltage by mutual induction of the second primary winding to which the second AC voltage is applied.

公开(公告)号：US09632447B2

公开(公告)日：2017-04-25

申请号：US15041613

申请日：2016-02-11

Applicant: Konica Minolta, Inc.

Inventor： Yuhei Tatsumoto ,  Katsuhide Sakai ,  Yasuhiro Koide ,  Yuta Tachibana

IPC: G03G15/02 ,  G03G15/06

CPC classification number: G03G15/0266 ,  G03G15/065

Abstract: An image forming apparatus includes: a photosensitive member rotated in a predetermined direction; a charging unit configured to charge a circumferential surface of the photosensitive member; a developing unit carrying a developer including toner and carriers, and including a developer bearing member configured to apply toner charged in a first polarity to the circumferential surface of the photosensitive member; a first voltage applying unit configured to apply a first voltage of the first polarity to the charging unit; a second voltage applying unit configured to apply a second voltage of the first polarity to the developer bearing member; a first voltage detecting unit configured to detect the first voltage; a second voltage detecting unit configured to detect the second voltage; and a controller, wherein the controller determines whether or not to make a second rate lower than a first rate according to the second voltage at a first timing.

公开(公告)号：US09207622B2

公开(公告)日：2015-12-08

申请号：US14606125

申请日：2015-01-27

Applicant: Konica Minolta, Inc.

Inventor： Yuhei Tatsumoto ,  Tomonobu Tamura ,  Satoshi Teshima

IPC: G03G15/00 ,  H02J3/38 ,  H02J4/00

CPC classification number: G03G15/80 ,  H02J3/38 ,  H02J4/00 ,  Y10T307/50

Abstract: A power controller includes: a measuring unit that measures outputs from plural power generating devices outputting power to a common load in parallel; an adjusting unit that controls the outputs of the plural power generating devices to adjust output voltages of the plural power generating devices to a predetermined value; and a matching control unit that calculates power-voltage characteristics of the plural power generating devices based on values measured by the measuring unit, determines a target value of output voltage to be shared by all the plural power generating devices based on the power-voltage characteristics thus calculated and corresponding to the whole parallel connection of the plural power generating devices, and allows the adjusting unit to match the predetermined value with the target value.

Abstract translation: 电力控制器包括：测量单元，其测量来自并联输出功率的多个发电机组的输出; 调节单元，其控制所述多个发电装置的输出，以将所述多个发电装置的输出电压调整为预定值; 以及匹配控制单元，其基于由所述测量单元测量的值来计算所述多个发电装置的电力 - 电压特性，基于所述多个发电装置的电力 - 电压特性来确定所有所述多个发电装置共享的输出电压的目标值 由此计算并对应于多个发电装置的整体并联连接，并且允许调整单元将预定值与目标值相匹配。

公开(公告)号：US10020760B2

公开(公告)日：2018-07-10

申请号：US15181633

申请日：2016-06-14

Applicant: KONICA MINOLTA, INC.

Inventor： Yuta Tachibana ,  Katsuhide Sakai ,  Yasuhiro Koide ,  Yuhei Tatsumoto

IPC: H02K29/12 ,  H02P6/15 ,  H02P6/16 ,  H02P6/22 ,  G03G15/00

CPC classification number: H02P6/15 ,  G03G15/5008 ,  G03G15/757 ,  G03G15/80 ,  H02P6/16 ,  H02P6/22

Abstract: A control method for a three-phase DC brushless motor including a rotor that includes a plurality of magnetic poles and that is rotatable, a stator that includes a plurality of magnetic field generation parts to generate a magnetic field to be a driving source of the rotor, and a sensor to detect a magnetic pole of the rotor which pole passes through a first position in the stator is provided, the method including: detecting in which the sensor detects a first magnetic pole of the rotor which pole passes through the first position; estimating, based on a result of the detection of the first magnetic pole, time until the first magnetic pole reaches a second position in the stator; and controlling the plurality of magnetic field generation parts in such a manner that a suitable magnetic field is generated when the first magnetic pole passes through the second position.

公开(公告)号：US09966767B2

公开(公告)日：2018-05-08

申请号：US14693099

申请日：2015-04-22

Applicant: Konica Minolta, Inc.

Inventor： Yuhei Tatsumoto ,  Tomonobu Tamura ,  Satoshi Teshima

IPC: H02J7/00 ,  G03G15/00

CPC classification number: H02J7/0021 ,  G03G15/80 ,  H02J7/0019 ,  H02J7/007

Abstract: A charge control device uses external electricity to charge a plurality of battery devices. A constant current source uses the external electricity to generate and adjust an output current amount to a constant target value. A selector selects one battery device from the plurality of battery devices and supplies output current from the constant current source to the one battery device. A measurer measures an amount of actual current flowing from the constant current source to the one battery device. An instructor monitors a measured value provided by the measurer and instructs the selector, when the measured value meets a condition for a reduction of charging current amount to be regarded as having occurred, to change a destination to which the output current of the constant current source is supplied from the one battery device to a different battery device.

公开(公告)号：US20150220044A1

公开(公告)日：2015-08-06

申请号：US14606125

申请日：2015-01-27

Applicant: Konica Minolta, Inc.

Inventor： Yuhei Tatsumoto ,  Tomonobu Tamura ,  Satoshi Teshima

IPC: H02J1/10 ,  G03G15/00

CPC classification number: G03G15/80 ,  H02J3/38 ,  H02J4/00 ,  Y10T307/50

Abstract: A power controller includes: a measuring unit that measures outputs from plural power generating devices outputting power to a common load in parallel; an adjusting unit that controls the outputs of the plural power generating devices to adjust output voltages of the plural power generating devices to a predetermined value; and a matching control unit that calculates power-voltage characteristics of the plural power generating devices based on values measured by the measuring unit, determines a target value of output voltage to be shared by all the plural power generating devices based on the power-voltage characteristics thus calculated and corresponding to the whole parallel connection of the plural power generating devices, and allows the adjusting unit to match the predetermined value with the target value.

Abstract translation: 电力控制器包括：测量单元，其测量来自并联输出功率的多个发电机组的输出; 调节单元，其控制所述多个发电装置的输出，以将所述多个发电装置的输出电压调整为预定值; 以及匹配控制单元，其基于由所述测量单元测量的值来计算所述多个发电装置的电力 - 电压特性，基于所述多个发电装置的电力 - 电压特性来确定所有所述多个发电装置共享的输出电压的目标值 由此计算并对应于多个发电装置的整体并联连接，并且允许调整单元将预定值与目标值相匹配。

公开(公告)号：US20140147157A1

公开(公告)日：2014-05-29

申请号：US14089997

申请日：2013-11-26

Applicant: Konica Minolta, Inc.

Inventor： Hiroshi HIRAGUCHI ,  Takashi Hasebe ,  Tomonobu Tamura ,  Yasutaka Tanimura ,  Yuhei Tatsumoto

IPC: G03G15/00

CPC classification number: G03G15/80 ,  G03G15/5004

Abstract: The image forming device includes a reception unit, an image forming unit, a switching unit, a detection unit, and a charging unit. The switching unit switches the image forming device between a first mode in which the reception unit is not supplied a voltage from a power source, is supplied power from a secondary battery, and receives image forming requests, and a second mode in which the image forming unit is supplied the voltage and performs image forming. The detection unit detects a value of an amount of energy of the secondary battery. In the second mode, the charging unit charges the secondary battery by supplying the voltage to the secondary battery when the value is equal to or less than a threshold value, and the charging unit boosts the voltage and supplies the boosted voltage to the secondary battery when the value is greater than the threshold value.

Abstract translation: 图像形成装置包括接收单元，图像形成单元，切换单元，检测单元和充电单元。 切换单元将图像形成装置切换到不从电源提供接收单元的电压的第一模式和来自二次电池的电力供应，并且接收图像形成请求的图像形成装置，以及第二模式，其中图像形成 单元供电并执行图像形成。 检测单元检测二次电池的能量的值。 在第二模式中，当该值等于或小于阈值时，充电单元通过向二次电池供应电压来对二次电池充电，并且充电单元提升电压并将升压电压提供给二次电池， 该值大于阈值。