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。

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：US20170168427A1

公开(公告)日：2017-06-15

申请号：US15370758

申请日：2016-12-06

Applicant: Konica Minolta, Inc.

Inventor： Satoru SASAKI ,  Yumiko IZUMIYA ,  Hidenori MINE ,  Takumi SHIRAKUMA ,  Kosuke SASAKI

IPC: G03G15/16

CPC classification number: G03G15/161 ,  G03G15/1615 ,  G03G2215/00143 ,  G03G2215/00156 ,  G03G2215/0135

Abstract: An image formation apparatus comprising: a belt member suspended by a plurality of supporting rotating bodies and thus rotating; a cleaning member removing toner adhering to the belt member; a tray receiving waste toner removed from the belt member by the cleaning member; a vibration mechanism vibrating the tray to move the waste toner toward a lower side of the tray; a steering control mechanism to perform movement control to move the belt member in an axial direction of the supporting rotating bodies while the belt member rotates; and a vibration adjustment mechanism to change a manner of vibration of the vibration mechanism, based on the movement control by the steering control mechanism.

公开(公告)号：US20170082959A1

公开(公告)日：2017-03-23

申请号：US15266513

申请日：2016-09-15

Applicant: Konica Minolta, Inc.

Inventor： Kosuke SASAKI ,  Masashi SUGANO

IPC: G03G15/20

CPC classification number: G03G15/2039 ,  G03G15/80

Abstract: A fixing apparatus configured to fix a coloring material attached to a recording medium by heating the recording medium by using a fixing member includes: a heater configured to heat the fixing member; an AC power source configured to apply AC voltage to the heater; a temperature detection unit configure to detect a temperature of the heater; and a power control unit configured to control drive power supplied to the heater from the AC power source by calculating an application pattern of AC voltage to be applied to the heater based on an output of the temperature detection unit, and by appropriately selecting a half wave of AC waveform from the AC power source based on the application pattern, wherein the power control unit supplies power equivalent to a waveform with a predetermined phase angle on a non-selected half wave from the AC power source to the heater.

公开(公告)号：US20140286666A1

公开(公告)日：2014-09-25

申请号：US14221412

申请日：2014-03-21

Applicant: Konica Minolta, Inc.

Inventor： Kosuke SASAKI ,  Yasuhiro ISHIHARA ,  Toshiaki TANAKA

IPC: G03G15/20

CPC classification number: G03G15/2039

Abstract: An image forming apparatus having: an endless fixing belt; a heating member heating the fixing belt; a support member maintaining the fixing belt substantially circular; a pressing member in contact with the fixing belt to form a fixing nip portion; a temperature sensor; a position detector; a storage storing temperatures and positions of the fixing belt detected by the temperature sensor and the position detector; and a control unit. The control unit is operable in a characteristic storing mode and in a fixing mode. In the characteristic storing mode, temperatures of the fixing belt associated with positions are detected, and the detected temperatures and positions are stored in the storage. In the fixing mode, temperatures of the fixing nip portion are predicted with reference to the temperatures and positions stored in the storage, and the heating member is controlled such that the predicted temperatures become a target temperature.

Abstract translation: 一种图像形成装置，具有：环形定影带; 加热构件加热定影带; 保持定影带大致圆形的支撑件; 与所述定影带接触的按压构件，以形成定影夹持部; 温度传感器; 位置检测器; 存储器，存储由温度传感器和位置检测器检测的定影带的温度和位置; 和控制单元。 控制单元可以在特征存储模式和定影模式下操作。 在特征存储模式中，检测与位置相关联的定影带的温度，并且将检测到的温度和位置存储在存储器中。 在定影模式中，参照存储在存储器中的温度和位置预测定影夹持部分的温度，并且控制加热部件使得预测温度成为目标温度。

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：US20140079425A1

公开(公告)日：2014-03-20

申请号：US14028664

申请日：2013-09-17

Applicant: KONICA MINOLTA, INC.

Inventor： Toshiaki TANAKA ,  Yasuhiro ISHIHARA ,  Kosuke SASAKI

IPC: G03G15/20

CPC classification number: G03G15/205 ,  G03G2215/2035

Abstract: A heater control device that performs phase control of AC power and supplies phase-controlled power to a heater, the heater control device including: a control unit configured to, in the phase control, gradually increase an on-duty ratio until a target power amount is supplied to the heater; and a judgment unit configured to judge whether or not the on-duty ratio is within a predetermined range of on-duty ratios including a 50% on-duty ratio. The control unit (i) increases the on-duty ratio by a first amount while the on-duty ratio is within the predetermined range, and (ii) increases the on-duty ratio by a second amount while the on-duty ratio is not within the predetermined range. The first amount is greater than the second amount.

Abstract translation: 1.一种加热器控制装置，其对交流电力进行相位控制，向加热器供给相位控制的电力，所述加热器控制装置包括：控制部，其在所述相位控制中逐渐增加占空比直至目标功率量 供应给加热器; 以及判定单元，其判断所述占空比是否在包括50％占空比的占空比范围内。 控制单元（i）在占空比在预定范围内时将占空比增加第一量，并且（ii）在占空比不是时将占空比增加第二量 在预定范围内。 第一个数量大于第二个数量。