公开(公告)号：US20240089391A1

公开(公告)日：2024-03-14

申请号：US18231205

申请日：2023-08-07

Applicant: KONICA MINOLTA, INC.

Inventor： Kenji IZUMIYA ,  Tatsuo ISHIZUKA ,  Hiroshi OYAMA ,  Takumi SHIRAKUMA

IPC: H04N1/23 ,  G06K15/00 ,  G06K15/12 ,  H04N1/00

CPC classification number: H04N1/2323 ,  G06K15/12 ,  G06K15/4065 ,  H04N1/00806

Abstract: A control device includes a controller that determines, based on physical property information corresponding to physical property of a recording sheet and read information on an image evaluated as abnormal through reading of an image on the recording sheet by a reading section on a recording sheet conveyance path, a process condition under which an image forming section performs image forming on the recording sheet.

公开(公告)号：US20180113410A1

公开(公告)日：2018-04-26

申请号：US15718932

申请日：2017-09-28

Applicant: Konica Minolta, Inc.

Inventor： Hidenori MINE ,  Kenji IZUMIYA ,  Satoshi OGATA ,  Kenji TAMAKI ,  Hirokatsu KODAMA

IPC: G03G15/00 ,  B65H9/16 ,  B65H5/06

CPC classification number: G03G15/6561 ,  B65H5/062 ,  B65H7/20 ,  B65H9/004 ,  B65H9/006 ,  B65H9/166 ,  B65H2403/92 ,  B65H2515/704 ,  G03G15/6529

Abstract: An image forming apparatus that controls to cut off exciting currents supplied to a plurality of motors to drive conveyance roller pairs after a leading end of a paper sheet is brought in contact with a registration roller pair, and, when cutting off the exciting currents, cut off the exciting current for at least one of the motors at a different timing from the other motors.

公开(公告)号：US20180059584A1

公开(公告)日：2018-03-01

申请号：US15677715

申请日：2017-08-15

Applicant: Konica Minolta, Inc.

Inventor： Kenji TAMAKI ,  Kenji IZUMIYA ,  Satoshi OGATA ,  Hidenori MINE ,  Hirokatsu KODAMA

IPC: G03G15/16

CPC classification number: G03G15/1675

Abstract: An image forming apparatus includes: an image holder that holds a toner image; a transferer that is disposed opposite to the image holder so as to be in contact with the image holder and transfers the toner image from the image holder onto a recording sheet that is going through a contact part where the transferer contacts the image holder, by applying a transfer voltage between the transferer and the image holder; a first power source that applies a voltage of a first polarity to the image holder; and a second power source that applies a voltage of a second polarity, which is reverse to the first polarity, to the transferer.

公开(公告)号：US20200019108A1

公开(公告)日：2020-01-16

申请号：US16460695

申请日：2019-07-02

Applicant: KONICA MINOLTA, INC.

Inventor： Hidenori MINE ,  Kenji IZUMIYA ,  Keigo OGURA ,  Takumi SHIRAKUMA ,  Hirokatsu KODAMA

IPC: G03G15/00

Abstract: An image forming device includes a resist roller feeding a sheet of paper toward an image forming unit; a first detector arranged upstream of the resist roller in a feeding direction to detect a front edge of the sheet of paper; a first calculator computing a first misalignment amount of the sheet of paper based on detection results by the first detector; a corrector correcting misalignment of the sheet of paper based on the computed first misalignment amount; a second detector arranged downstream of the resist roller in the feeding direction to detect a position of an end of the sheet of paper in a widthwise direction; a second calculator computing a second misalignment amount of the sheet of paper based on detection results by the second detector; and an adjuster adjusting a correction amount by the corrector based on the computed second misalignment amount.

公开(公告)号：US20160259278A1

公开(公告)日：2016-09-08

申请号：US15016849

申请日：2016-02-05

Applicant: Konica Minolta, Inc.

Inventor： Kenji IZUMIYA ,  Kiyoto KOJIMA ,  Satoshi OGATA ,  Hirokatsu KODAMA

IPC: G03G15/00

CPC classification number: G03G15/2028 ,  G03G15/2039 ,  G03G15/6538 ,  G03G15/6588 ,  G03G15/6591

Abstract: An image forming system includes: an image forming apparatus that forms an image on a sheet; one or more sheet carrying devices successively disposed on the downstream side of the image forming apparatus; and a control device that controls the image forming apparatus and the one or more sheet carrying devices based on a job that designates a page configuration containing a page order and sheet types, wherein the sheet carrying device includes a bypass conveyance path along which the sheet output from an upstream device is conveyed toward a downstream device, and a sheet tray unit that temporarily stores the sheet output from the upstream device and discharges the sheet toward the bypass conveyance path, and the control device divides the job into sheet types and determines a printing order of the divided sheet types and sheet types to be stored in the sheet carrying device.

Abstract translation: 图像形成系统包括：图像形成装置，其在片材上形成图像; 连续地设置在图像形成装置的下游侧的一个或多个片材承载装置; 以及控制装置，其基于指定包含页面顺序和纸张类型的页面配置的作业来控制图像形成装置和所述一个或多个纸张承载装置，其中，所述纸张承载装置包括旁边输送路径，所述纸张输出 从上游装置向下游装置输送的纸张单元和临时存储从上游装置输出的纸张并将纸张朝向旁路输送路径排出的纸张托盘单元，并且控制装置将作业分割为纸张类型并确定打印 分割的纸张类型和纸张类型的顺序存储在纸张传送装置中。

公开(公告)号：US20140138899A1

公开(公告)日：2014-05-22

申请号：US14083484

申请日：2013-11-19

Applicant: Konica Minolta , Inc.

Inventor： Hiroshi OYAMA ,  Kenji IZUMIYA ,  Kiyoto KOJIMA ,  Atsushi TAKAHASHI

IPC: B65H5/26

CPC classification number: B65H5/26 ,  B65H1/266 ,  B65H7/08 ,  B65H9/006 ,  B65H2402/10 ,  B65H2405/15 ,  B65H2405/332 ,  B65H2513/10 ,  B65H2513/42 ,  B65H2513/53 ,  B65H2801/06 ,  B65H2220/01 ,  B65H2220/02

Abstract: A paper feed apparatus is capable of correcting the skew of a sheet irrespective of a differential conveyance distance. The paper feed apparatus is provided with a first Large volume paper feed apparatus 100A having a control unit 130 which performs first correction control to correct the skew of a sheet by controlling a first conveyance unit 110 and forming a loop of the sheet P before a paper stop rollers 110d, and also performs second correction control to correct the skew of a sheet by controlling a second conveyance unit 120 and forming a loop of the sheet before a paper stop rollers 110d. In this case, the control unit 130 controls the first conveyance unit 110 and the second conveyance unit 120 in order that the skew correcting ability of the second correction control becomes greater than the skew correcting ability of the first correction control.

Abstract translation: 进纸装置能够校正纸张的歪斜，而与差分输送距离无关。 供纸装置设置有具有控制单元130的第一大容量供纸装置100A，控制单元130通过控制第一输送单元110进行第一校正控制以校正薄片的歪斜，并在纸张之前形成纸张P的回路 停止辊110d，并且还执行第二校正控制以通过控制第二输送单元120并在纸张停止辊110d之前形成纸张的环来校正纸张的歪斜。 在这种情况下，控制单元130控制第一输送单元110和第二输送单元120，以使得第二校正控制的偏斜校正能力变得大于第一校正控制的倾斜校正能力。

公开(公告)号：US20200161992A1

公开(公告)日：2020-05-21

申请号：US16686758

申请日：2019-11-18

Applicant: KONICA MINOLTA, INC.

Inventor： Takumi SHIRAKUMA ,  Kenji IZUMIYA

IPC: H02P5/50

Abstract: A motor drive device controls driving of a plurality of motors that rotate a common drive shaft, and includes: a motor drive device that outputs the same drive power to each motor of the plurality of motors, and includes a motor drive controller that controls the drive power, using a rotation speed detection signal of a motor of the plurality of motors as a feedback signal; and a controller that determines a drive abnormality from the rotation speed detection signal of the motor or the drive power of the motor, wherein the controller determines a motor abnormal state and an overloaded state, from the drive power of the motor.

公开(公告)号：US20190393810A1

公开(公告)日：2019-12-26

申请号：US16446495

申请日：2019-06-19

Applicant: KONICA MINOLTA, INC.

Inventor： Keigo OGURA ,  Takumi SHIRAKUMA ,  Kenji IZUMIYA ,  Hidenori MINE ,  Hirokatsu KODAMA

IPC: H02P5/46 ,  G03G15/00

Abstract: A driving device includes: a first motor that transmits power to a rotation shaft of a conveyance roller for conveying a paper sheet; a second motor that transmits power to the rotation shaft of the conveyance roller; and a motor controller that controls rotational speeds of the first and second motors by changing a control value, wherein the motor controller controls the control value of the first motor at multiple steps at a time of acceleration or deceleration and changes the control value of the second motor according to a change range of the control value of the first motor in synchronization with a timing when the control value of the first motor is changed.

公开(公告)号：US20190146397A1

公开(公告)日：2019-05-16

申请号：US16182826

申请日：2018-11-07

Applicant: Konica Minolta, Inc.

Inventor： Kenji IZUMIYA ,  Takumi SHIRAKUMA ,  Keigo OGURA ,  Hidenori MINE ,  Hirokatsu KODAMA

IPC: G03G15/00 ,  G03G15/20

Abstract: A fixing device includes a first fixing section, a second fixing section, the first fixing section and the second fixing section forming a fixing nip therebetween, a nip width adjusting section capable of adjusting a nip width of the fixing nip, a rotation speed detecting section that detects a rotation speed of the second fixing section, and a hardware processor that controls the nip width adjusting section to make the nip width equal to a predetermined reference nip width.

公开(公告)号：US20150268593A1

公开(公告)日：2015-09-24

申请号：US14658751

申请日：2015-03-16

Applicant: Konica Minolta, Inc.

Inventor： Kosuke SASAKI ,  Kenji TAMAKI ,  Masayuki WATANABE ,  Kiyoto KOJIMA ,  Kenji IZUMIYA ,  Hiroshi OYAMA

IPC: G03G15/20

CPC classification number: G03G15/2039

Abstract: A fixing apparatus included in an image forming apparatus includes a fixing heater that performs heat fixing, a control unit that controls the fixing heater based on control patterns, a temperature sensor that detects temperature of the fixing heater, and a voltage detection unit that detects a voltage that is applied to the fixing heater. In each control pattern, turn-on period of the fixing heater and turn-off period of the fixing heater are set according to a control cycle of a half cycle duty control. The control unit controls the switching unit to turn on or off the fixing heater using a combination of the control patterns each satisfying a standard for preventing a flicker during each control period of time that is integral multiplication of the control cycle according to the temperature of the fixing heater and the voltage value allied to the fixing heater.

Abstract translation: 包括在图像形成装置中的定影装置包括执行热定影的定影加热器，基于控制图案控制定影加热器的控制单元，检测定影加热器的温度的温度传感器，以及检测定影加热器的电压检测单元 施加到定影加热器的电压。 在每个控制模式中，根据半循环占空比控制的控制周期来设定定影加热器的开启周期和定影加热器的关闭周期。 控制单元控制开关单元使用各自满足用于防止在根据控制周期的温度的控制周期的积分乘法的每个控制时段期间的闪烁的控制模式的组合来打开或关闭定影加热器 固定加热器和与定影加热器相关的电压值。