公开(公告)号：US20190196388A1

公开(公告)日：2019-06-27

申请号：US16193541

申请日：2018-11-16

Applicant: KONICA MINOLTA, INC.

Inventor： Yukinobu Iguchi ,  Satoru Sasaki ,  Yoshihito Sasamoto ,  Naoto Sugaya ,  Kenichi Hayashi ,  Yohei Yamada

IPC: G03G15/00 ,  G03G15/20

CPC classification number: G03G15/80 ,  G03G15/2039

Abstract: A fixing apparatus includes: a fixing member including a heater as a heat source; and a hardware processor that uses pulse width modulation (PWM) control to control power supplied to the heater; wherein the hardware processor changes a duty of the PWM control within a half cycle of an input current of the PWM control.

公开(公告)号：US09639039B2

公开(公告)日：2017-05-02

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 ,  G03G15/00

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.

公开(公告)号：US09632464B2

公开(公告)日：2017-04-25

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.

公开(公告)号：US09423743B2

公开(公告)日：2016-08-23

申请号：US15002110

申请日：2016-01-20

Applicant: KONICA MINOLTA, INC.

Inventor： Yohei Yamada ,  Mikiyuki Aoki ,  Toru Kasamatsu

IPC: G03G15/00

CPC classification number: G03G21/1875 ,  G03G15/0863 ,  G03G2221/1823 ,  G03G2221/1892

Abstract: A unit checking device is provided which checks whether a unit detachably provided to a device body is new or old. The unit checking device includes a transistor for checking provided in the unit and configured to be destructed by power supplied from the device body; and an inspection device provided in the device body and configured to determine whether or not the transistor is destructed by applying a voltage to the transistor.

Abstract translation: 提供了一种单元检查装置，其检查可拆卸地提供给装置主体的单元是新的还是旧的。 单元检查装置包括用于检查的晶体管，该晶体管被设置在该单元中并且被配置为被从设备主体提供的电力破坏; 以及检查装置，其设置在所述器件主体中，并且被配置为通过向所述晶体管施加电压来确定所述晶体管是否被破坏。

公开(公告)号：US09372470B2

公开(公告)日：2016-06-21

申请号：US14573645

申请日：2014-12-17

Applicant: KONICA MINOLTA, INC.

Inventor： Yohei Yamada ,  Toru Kasamatsu ,  Mikiyuki Aoki ,  Kouei Cho

IPC: G03G21/16 ,  G03G15/08 ,  G03G15/00

CPC classification number: G03G21/1652 ,  G03G15/0863 ,  G03G15/553

Abstract: The apparatus includes first and second terminals, an electrical conductor placed around at least the second terminal, a first current applying unit, an abnormal circumstances determining unit, a second current applying unit, and an informing unit. The first current applying unit applies current between the first terminal and the second terminal. The abnormal circumstances determining unit determines whether there is an abnormal circumstance at the connection between the apparatus and the unit side circuit, under the condition that the current is applied by the first current applying unit. The second current applying unit applies current between the first terminal and the second terminal, in case that the abnormal circumstances determining unit determined that there is not an abnormal circumstance of the connection. The informing unit informs the abnormal circumstance of the connection, in case that the abnormal circumstances determining unit determined that there is the abnormal circumstance of the connection.

Abstract translation: 该装置包括第一和第二端子，至少设置在第二端子周围的电导体，第一电流施加单元，异常情况判定单元，第二电流施加单元和通知单元。 第一电流施加单元在第一端子和第二端子之间施加电流。 在由第一电流施加单元施加电流的条件下，异常情况确定单元确定设备和单元侧电路之间的连接是否存在异常情况。 第二电流施加单元在异常情况确定单元确定没有连接的异常情况的情况下，在第一端子和第二端子之间施加电流。 如果异常情况确定单元确定存在连接的异常情况，通知单元通知连接的异常情况。

公开(公告)号：US09207561B2

公开(公告)日：2015-12-08

申请号：US14490044

申请日：2014-09-18

Applicant: KONICA MINOLTA, INC.

Inventor： Yohei Yamada ,  Tatsuya Eguchi ,  Akimasa Ishikawa

IPC: B41J2/455 ,  B41J2/385 ,  G03G15/043

CPC classification number: G03G15/043

Abstract: An image forming apparatus that forms a color image by layering toner images of different colors includes: a photoreceptor on which an electrostatic latent image is formed through charging and exposure; an exposure unit performing exposure-scanning on the photoreceptor in accordance with image signal; an intensity determination unit determining exposure intensity according to image forming condition; and a timing determination unit determining a timing of inputting image signal for each scanning line, wherein the exposure unit has a delay duration differing depending on the exposure intensity and being from input of image signal of each pixel to be exposed to exposure of the pixel at the exposure intensity, and the timing determination unit obtains the delay duration corresponding to the exposure intensity, and determines the timing such that image signal of an initial pixel to be initially exposed is input the delay duration before the initial pixel is exposed.

Abstract translation: 通过分层不同颜色的调色剂图像形成彩色图像的图像形成装置包括：通过充电和曝光在其上形成静电潜像的感光体; 曝光单元根据图像信号对感光体进行曝光扫描; 强度确定单元，根据图像形成条件确定曝光强度; 以及定时确定单元，确定针对每个扫描线输入图像信号的定时，其中所述曝光单元具有根据所述曝光强度而不同的延迟持续时间，并且来自所述像素的每个像素的图像信号的输入以暴露于所述像素的曝光 曝光强度和定时确定单元获得与曝光强度对应的延迟持续时间，并且确定定时，使得最初曝光的初始像素的图像信号被输入到初始像素曝光之前的延迟持续时间。

公开(公告)号：US20140125751A1

公开(公告)日：2014-05-08

申请号：US14066922

申请日：2013-10-30

Applicant: Konica Minolta, Inc.

Inventor： Akimasa Ishikawa ,  Tatsuya Eguchi ,  Yohei Yamada

IPC: B41J2/385

CPC classification number: G03G15/04072 ,  G03G15/043

Abstract: An image forming apparatus for performing laser exposure is provided. The image forming apparatus includes a driving circuit for supplying drive current to a laser light source in accordance with an image pulse signal; a pulse width expansion portion for expanding a pulse width of the image pulse signal supplied to the driving circuit; and an adjustment control portion for setting, based on state data indicating a state related to light emission start characteristics of the laser light source, a value of the bias current supplied as a part of the drive current to the laser light source and an amount of expansion of the pulse width in such a manner that laser light emission occurs in a period of time having a length equal to a length of a pulse width of each pulse in the image pulse signal.

Abstract translation: 提供了一种用于执行激光曝光的图像形成装置。 图像形成装置包括根据图像脉冲信号向激光光源提供驱动电流的驱动电路; 脉冲宽度扩展部分，用于扩展提供给驱动电路的图像脉冲信号的脉冲宽度; 以及调整控制部分，用于基于指示与激光源的发光开始特性相关的状态的状态数据，将作为驱动电流的一部分提供的偏置电流的值设置到激光光源， 脉冲宽度的扩展使得激光发射在具有等于图像脉冲信号中的每个脉冲的脉冲宽度的长度的时间段内发生。

公开(公告)号：US10264162B2

公开(公告)日：2019-04-16

申请号：US15659116

申请日：2017-07-25

Applicant: Konica Minolta, Inc.

Inventor： Kenichi Hayashi ,  Yohei Yamada ,  Yukinobu Iguchi ,  Satoru Sasaki

IPC: H04N1/60 ,  G01K11/12 ,  H04N1/00

Abstract: An image forming system includes: an image forming apparatus; and an image reading apparatus that reads an image, wherein temperature correction patches with the same color are formed at a reference position and a comparison position, the image reading apparatus includes: a scanner that reads respective colors of the temperature correction patches at the reference position and at the comparison position; and a colorimeter that performs colorimetry to the temperature correction patch at the reference position, the image forming apparatus includes: a detector that detects a temperature of the temperature correction patch at the reference position; a first calculator that calculates a color difference of color values of the temperature correction patches at the reference position and at the comparison position; and a second calculator that calculates a temperature distribution, and as a temperature difference between a first position and a second position increases, the color difference increases.

公开(公告)号：US09268250B2

公开(公告)日：2016-02-23

申请号：US14066922

申请日：2013-10-30

Applicant: Konica Minolta, Inc.

Inventor： Akimasa Ishikawa ,  Tatsuya Eguchi ,  Yohei Yamada

IPC: B41J2/435 ,  B41J2/47 ,  G03G15/04 ,  G03G15/043

CPC classification number: G03G15/04072 ,  G03G15/043

Abstract: An image forming apparatus for performing laser exposure is provided. The image forming apparatus includes a driving circuit for supplying drive current to a laser light source in accordance with an image pulse signal; a pulse width expansion portion for expanding a pulse width of the image pulse signal supplied to the driving circuit; and an adjustment control portion for setting, based on state data indicating a state related to light emission start characteristics of the laser light source, a value of the bias current supplied as a part of the drive current to the laser light source and an amount of expansion of the pulse width in such a manner that laser light emission occurs in a period of time having a length equal to a length of a pulse width of each pulse in the image pulse signal.

Abstract translation: 提供了一种用于执行激光曝光的图像形成装置。 图像形成装置包括根据图像脉冲信号向激光光源提供驱动电流的驱动电路; 脉冲宽度扩展部分，用于扩展提供给驱动电路的图像脉冲信号的脉冲宽度; 以及调整控制部分，用于基于指示与激光源的发光开始特性相关的状态的状态数据，将作为驱动电流的一部分提供的偏置电流的值设置到激光光源， 脉冲宽度的扩展使得激光发射在具有等于图像脉冲信号中的每个脉冲的脉冲宽度的长度的时间段内发生。

公开(公告)号：US09645541B2

公开(公告)日：2017-05-09

申请号：US14619267

申请日：2015-02-11

Applicant: KONICA MINOLTA, INC.

Inventor： Kouei Cho ,  Toru Kasamatsu ,  Mikiyuki Aoki ,  Yohei Yamada

IPC: G03G15/00 ,  H02M3/335 ,  H02M1/00

CPC classification number: G03G15/80 ,  G03G15/5004 ,  H02M3/33507 ,  H02M2001/009

Abstract: Image forming apparatus comprises an electric power supply circuit board, an electric power control unit, functional circuits, and an electrical power saving circuit. The electric power control unit executes constant voltage control, to make electrical potential of a remote sensing location constant. The functional circuits are connected with the electric power supply circuit board. The electrical power saving circuit switches the state of functional circuits between the state in which they are provided with electric power and the state in which they are not provided with electric power. The electrical power saving circuit sets the contact point of the input side of the circuit, in which the consumption electrical current or the behavior guarantee minimum electrical voltage is the largest, out of the electrical power saving circuit and functional circuits provided with electric power, as the remote sensing location.