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

IPC: G03G15/00 ,  B65H7/02

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.

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：US20150338793A1

公开(公告)日：2015-11-26

申请号：US14710523

申请日：2015-05-12

Applicant: KONICA MINOLTA, INC.

Inventor： Takanobu SHIKI ,  Kenji TAMAKI ,  Kenji YAMAMOTO ,  Yukinobu IGUCHI ,  Kosuke SASAKI ,  Shohei OTSU

IPC: G03G15/20

CPC classification number: G03G15/205 ,  G03G15/2039

Abstract: When changing the turn-on/off patterns, a controller of a fixing device sets a control interval of the turn-on/off pattern so as to be longer than a first period of time that does not exert any influence to a flicker value and to be shorter than a second period of time that does not exert any influence to a response to temperature control. The controller of the fixing device selects a third turn-on/off pattern in which power difference between power of a first turn-on/off pattern before the change in the turn-on/off pattern and power of a second turn-on/off pattern after the change in the turn-on/off pattern is smaller than a set reference power difference.

Abstract translation: 当改变打开/关闭模式时，定影装置的控制器将开/关模式的控制间隔设置为比不对闪烁值没有影响的第一时间段长;以及 要比对温度控制的响应没有任何影响的第二个时间段短。 定影装置的控制器选择第三导通/截止图案，其中在开/关模式改变之前的第一导通/断开图案的功率与第二接通/断开图案的功率之间的功率差异， 导通/断开模式的变化之后的断开模式小于设定的基准功率差。

公开(公告)号：US20160357135A1

公开(公告)日：2016-12-08

申请号：US15171683

申请日：2016-06-02

Applicant: Konica Minolta, Inc.

Inventor： Kenji YAMAMOTO ,  Kenji TAMAKI

IPC: G03G15/20

CPC classification number: G03G15/2039 ,  G03G15/2032 ,  G03G15/2053

Abstract: A fixing device includes: a fixing unit which heats a recording medium to fix a color material adhered to the recording medium; a first heater which heats the fixing unit; a second heater with rated power smaller than the rated power of the first heater which heats the fixing unit; and a controller which performs preliminary control of energizing the second heater when heating of the fixing unit by the first heater is started and energizing control of stepping up power consumption of the first heater and stepping down the power consumption of the second heater such that a change amount when a sum of the power consumption of the first heater and the power consumption of the second heater changes becomes a value to make a flicker value indicating a degree of a flicker not larger than a predetermined standard value after executing the preliminary control.

Abstract translation: 定影装置包括：固定单元，其加热记录介质以固定粘附到记录介质上的着色材料; 加热所述固定单元的第一加热器; 额定功率小于加热定影单元的第一加热器的额定功率的第二加热器; 开始对通过第一加热器加热定影单元的第二加热器通电的预控制的控制器，并且对第一加热器的加电功率进行通电控制，并降低第二加热器的功耗， 当第一加热器的功率消耗和第二加热器的功率消耗的总和变化时，当执行预备控制之后，成为表示闪烁程度不大于预定标准值的闪烁值的值。

公开(公告)号：US20140140710A1

公开(公告)日：2014-05-22

申请号：US14084798

申请日：2013-11-20

Applicant: Konica Minolta, Inc.

Inventor： Kazutoshi YOSHIMURA ,  Katsunori TAKAHASHI ,  Hiroyuki WATANABE ,  Kenichi HAYASHI ,  Keigo OGURA ,  Takahiro YOKOYA ,  Kenji TAMAKI

IPC: G03G15/00

CPC classification number: G03G15/2028 ,  G03G15/6511

Abstract: An image forming apparatus receives setting of an object to be adjusted, on an adjustment object selection screen when selecting an adjustment mode. After the object to be adjusted is set, camera(s) photograph(s) the object to be adjusted so that the image forming apparatus obtains photographed data of current object to be adjusted. Next, the apparatus searches photographed data of the object to be adjusted in the ideal state thereof from the database. Name of the object to be adjusted and related information in the photographed data agree with those of the photographed data of current object to be adjusted. The higher ranked related information is preferentially searched and it is determined whether or not pieces of the higher ranked related information thus preferentially searched agree with each other.

Abstract translation: 图像形成装置在选择调整模式时，在调整对象选择画面上接收待调整对象的设定。 在设置要调整的对象之后，照相机拍摄要调节的对象，使得图像形成装置获得要调整的当前对象的拍摄数据。 接下来，该装置从数据库中搜索要在其理想状态下调整的对象的拍摄数据。 要被调整的对象的名称和拍摄数据中的相关信息与被调整的当前对象的拍摄数据的名称一致。 优先搜索较高等级的相关信息，并且确定这样优先搜索的较高等级的相关信息的片段是否彼此一致。

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

IPC: G03G15/01 ,  G03G15/08

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.

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。

公开(公告)号：US20180253040A1

公开(公告)日：2018-09-06

申请号：US15902675

申请日：2018-02-22

Applicant: KONICA MINOLTA, INC.

Inventor： Kenji TAMAKI

IPC: G03G15/20

CPC classification number: G03G15/2003 ,  G03G15/2039 ,  G03G15/5004 ,  H04N1/00904 ,  H04N2201/0094

Abstract: An image forming apparatus includes: a fixer that includes a first heater group including first heaters and a second heater group including second heaters; a first power cord that supplies AC power to the first heater group; a second power cord that supplies AC power to the second heater group; first switches that switch a power supply state to the first heaters; second switches that switch a power supply state to the second heaters; and a hardware processor that independently controls the lightings of the first and second heater groups by controlling the first and second switches based on an array pattern for turning on or off the first and second heaters, wherein the array pattern includes an on period and an off period whose lengths are both a half wave cycle of an AC power supply, and is set to satisfy a flicker regulation value.

公开(公告)号：US20140348528A1

公开(公告)日：2014-11-27

申请号：US14282858

申请日：2014-05-20

Applicant: KONICA MINOLTA, INC.

Inventor： Kenji TAMAKI ,  Takeshi TAMADA ,  Kenji YAMAMOTO ,  Kosuke SASAKI ,  Shohei OTSU

IPC: G03G15/20

CPC classification number: G03G15/205

Abstract: An image forming apparatus is provided with a fixing unit in which flickers can be effectively reduced while inhibiting electric current imbalance. The fixing unit comprises a fixing heater, a switching unit for switching the fixing heater on/off with an AC power source, and a control unit which controls the switching unit to switch in units of the half wave period of the AC power source AC, and a storing unit for storing a plurality of energization patterns which define the ways of performing the switch control. Each energization pattern corresponds to a control cycle which contains a three or more odd number of the half wave periods each of which is either an OFF period and an ON period, and all the half wave periods of the smaller in number of the ON periods and the OFF periods are not successively arranged.

Abstract translation: 图像形成装置设置有固定单元，其中可以有效地减少闪烁，同时抑制电流不平衡。 定影单元包括定影加热器，用AC电源切换定影加热器的切换单元，以及控制单元，其以交流电源AC的半波周期为单位进行控制， 以及存储单元，用于存储限定执行开关控制的方式的多个通电模式。 每个通电模式对应于一个控制周期，该控制周期包含三个或更多奇数个半波周期，每个半波周期为OFF周期和导通周期，并且所有半波周期的数目的ON周期数和 关闭周期未连续排列。