公开(公告)号：US12210306B2

公开(公告)日：2025-01-28

申请号：US18134262

申请日：2023-04-13

Applicant: KONICA MINOLTA, INC.

Inventor： Yuhei Tatsumoto ,  Akimasa Ishikawa ,  Makoto Shimazoe ,  Yuta Tachibana ,  Kouei Cho

IPC: G03G15/00 ,  G06K15/00

Abstract: Provided is an image forming system capable of accurately detecting the resistance of a recording material. The image forming system includes an application roller that applies a voltage to a recording material on a conveyance path, and a controller that calculates the electric resistance of the recording material from a relationship between the voltage applied to the application roller and a current. The controller calculates the resistance of the recording material based on first profile information that is acquired by changing the applied voltage and corresponds to a change in the resistance of the application roller, and second profile information that is acquired by changing the applied voltage in a state where the recording material is sandwiched and corresponds to the change in the resistance of the application roller.

公开(公告)号：US10263525B2

公开(公告)日：2019-04-16

申请号：US15903419

申请日：2018-02-23

Applicant: Konica Minolta Inc.

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

IPC: H02M3/158 ,  H02M7/155 ,  H02M3/335 ,  H02M3/156 ,  H02M1/00

Abstract: A power supply device includes: a power supply circuit that converts an AC voltage into a DC voltage; and a control circuit that controls the power supply circuit, wherein the power supply circuit includes: a rectifying and smoothing circuit that rectifies and smoothes the AC voltage; a first voltage converting circuit that converts the voltage and outputs a first DC voltage; a second voltage converting circuit that switches the first DC voltage by a switching circuit to output a second DC voltage; a feedback circuit that detects and feeds back an output voltage of the first voltage converting circuit; and a selection circuit that switches a reference voltage of the feedback circuit, and the control circuit sets the switching circuit to be in a continuous connection state when a normal mode is shifted to a power saving mode and gradually switches the reference voltage.

公开(公告)号：US20180275592A1

公开(公告)日：2018-09-27

申请号：US15890991

申请日：2018-02-07

Applicant: KONICA MINOLTA, INC.

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

IPC: G05F5/00 ,  H02M7/06

CPC classification number: G03G15/80 ,  H01F38/00 ,  H02M7/06 ,  H02M2001/009

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：US10007224B2

公开(公告)日：2018-06-26

申请号：US15297663

申请日：2016-10-19

Applicant: Konica Minolta, Inc.

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

IPC: H02M3/337 ,  G03G15/00 ,  H02M3/338 ,  H02M3/335 ,  H04N1/00

CPC classification number: G03G15/80 ,  G03G2215/0132 ,  H02M3/335 ,  H02M3/337 ,  H02M3/338 ,  H04N1/00888 ,  H04N1/00904

Abstract: A power supply device including: a transformer generating, from an input voltage, low output voltage and high output voltage; an upper limiter circuit receiving the high output voltage and controlling the high output voltage not to exceed a maximum; a power controller performing feedback control on the input voltage so that the low output voltage matches a target voltage; an operation mode acquirer configured to acquire an operation mode of an image forming device; and a target value controller configured to change the target voltage depending upon the acquired operation mode. The target voltage when consumption amount of current with the high output voltage is relatively great ensures that the high output voltage does not fall below a minimum of a rated voltage range of the high output voltage, and is higher than the target voltage when consumption amount of current with the high output voltage is relatively small.

公开(公告)号：US09893675B2

公开(公告)日：2018-02-13

申请号：US15009021

申请日：2016-01-28

Applicant: Konica Minolta, Inc.

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

IPC: H02P29/60 ,  H02P7/00 ,  G03G15/00 ,  H02P29/032

CPC classification number: H02P29/60 ,  G03G15/5004 ,  G03G15/80 ,  H02P29/032

Abstract: In a device for controlling a motor mounted on a system with different operation modes, a controller unit calculates an input value for the motor based on an output value of the motor and a target value depending on operation modes of the system, and instructs a driver circuit of the motor to apply the input value to the motor. An estimation unit estimates an amount of rise in temperature of the motor by applying the input value for the motor to a thermal model of the motor. A notification unit compares a value estimated by the estimation unit with a threshold value. When the estimated value exceeds the threshold value, the notification unit sends a request for change of operation mode to the system.

公开(公告)号：US09362541B2

公开(公告)日：2016-06-07

申请号：US14301850

申请日：2014-06-11

Applicant: KONICA MINOLTA, INC.

Inventor： Yuhei Tatsumoto ,  Yasutaka Tanimura ,  Tomonobu Tamura ,  Hiroshi Hiraguchi

IPC: H01M2/14 ,  H01M2/16 ,  H01M10/054 ,  H01M2/18 ,  H01M4/134 ,  H01M10/04 ,  H01M10/42

CPC classification number: H01M2/1673 ,  H01M2/1686 ,  H01M2/18 ,  H01M4/134 ,  H01M10/0468 ,  H01M10/054 ,  H01M10/4214

Abstract: A magnesium cell includes a positive electrode, a negative electrode including a magnesium alloy, and a separator disposed between the positive electrode and the negative electrode to hold an electrolytic solution, in which a contact area between the negative electrode and the separator is variable.

Abstract translation: 镁电池包括正电极，包括镁合金的负电极和设置在正极和负极之间的隔板，用于保持负极和隔板之间的接触面积是可变的电解液。

公开(公告)号：US09075381B2

公开(公告)日：2015-07-07

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 ,  G03G21/00

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。