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公开(公告)号：US20150268617A1
公开(公告)日：2015-09-24
申请号：US14662865
申请日：2015-03-19
申请人： Konica Minolta, Inc.
发明人： Toru KASAMATSU , Mikiyuki AOKI , Yohei YAMADA , Kouei CHO
IPC分类号： G03G15/06
CPC分类号： G03G15/80 , G03G15/065
摘要： An image forming apparatus having image supporting members and developing devices provided for a plurality of colors respectively, and a developing bias source. The developing bias source includes DC power circuits provided for the colors respectively, an AC power circuit provided for use in common for all of the colors, and an element provided for at least one of the colors other than black. The developing bias source generates developing biases by superimposing an AC voltage output from the AC power circuit on DC voltages output from the DC power circuits and applies the developing biases to the respectively corresponding developing devices. The element maintains a constant voltage having a potential of an opposite polarity to a potential of charged toner used for the development. The developing bias source further superimposes the constant voltage on the developing bias for the at least one of the colors other than black.
摘要翻译： 具有分别设置有多种颜色的图像支持部件和显影装置的图像形成装置和显影偏压源。 显影偏压源包括分别为颜色提供的DC电源电路，为所有颜色共同使用而设置的AC电源电路，以及为黑色以外的至少一种颜色提供的元件。 显影偏压源通过将从AC电源电路输出的AC电压叠加在从DC电源电路输出的直流电压上产生显影偏压，并将显影偏压施加到相应的显影装置。 该元件保持具有与用于显影的带电调色剂的电位相反极性的电位的恒定电压。 显影偏压源进一步将恒定电压叠加在黑色以外的至少一种颜色的显影偏压上。
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公开(公告)号：US20150177681A1
公开(公告)日：2015-06-25
申请号：US14573645
申请日：2014-12-17
申请人： KONICA MINOLTA, INC.
发明人： Yohei YAMADA , Toru KASAMATSU , Mikiyuki AOKI , Kouei CHO
IPC分类号： G03G15/00
CPC分类号： G03G21/1652 , G03G15/0863 , G03G15/553
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20180026524A1
公开(公告)日：2018-01-25
申请号：US15655986
申请日：2017-07-21
申请人： KONICA MINOLTA, INC.
发明人： Toru KASAMATSU , Mikiyuki AOKI , Kouei CHO
CPC分类号： H02M1/36 , G03G15/80 , H02M3/285 , H02M3/33507 , H02M2001/0032
摘要： A power supply device includes: a first transformer including a primary winding and a secondary winding; a first control circuit controlling a switching operation of a switch element, and cause the primary winding to generate a first AC voltage; an application circuit receiving a second AC voltage generated in the secondary winding by mutual induction with the primary winding, and apply an output voltage according to the second AC voltage to a load; a voltage detection circuit detecting a magnitude of a DC voltage obtained by rectifying the first AC voltage or the second AC voltage; and an output circuit outputting a stop signal indicating stop of the power supply device, when a result of comparison between the magnitude of the DC voltage and a threshold value set according to a magnitude of the load satisfies a predetermined condition, after reception of an instruction to stop voltage supply.
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公开(公告)号：US20170038711A1
公开(公告)日：2017-02-09
申请号：US15227369
申请日：2016-08-03
申请人： Konica Minolta, Inc.
IPC分类号： G03G15/20
CPC分类号： G03G15/2039
摘要： A fuser control device includes: a fusing portion having a heater; a chopper portion including a reactor, a free-wheeling element, and a switching element; and a processor portion being configured to implement a first current control during an implementation period, the implementation period including a first time interval and a second time interval, the implementation period being longer than a commercial power period, the first current control for transferring a control signal having a predetermined duty ratio to the switching element during the first time interval and transferring a control signal having a 100% duty ratio to the switching element during the second time interval.
摘要翻译： 定影器控制装置包括：具有加热器的定影部; 包括反应器，续流元件和开关元件的切断器部分; 以及处理器部分，其被配置为在实施期间内实施第一电流控制，所述实施周期包括第一时间间隔和第二时间间隔，所述实施周期长于商业功率周期，所述第一电流控制用于传送控制 信号在第一时间间隔期间具有与开关元件的预定占空比，并且在第二时间间隔期间将具有100％占空比的控制信号传送给开关元件。
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公开(公告)号：US20150256079A1
公开(公告)日：2015-09-10
申请号：US14643398
申请日：2015-03-10
申请人： Konica Minolta, Inc.
发明人： Taku KIMURA , Mikiyuki AOKI , Hideki NAKAMURA , Masahiro NONOYAMA , Junichi MASUDA , Yohei YAMADA
CPC分类号： G03G15/80 , H02M3/33507 , H02M7/217 , H02M2001/0035 , H02M2001/007 , H02M2001/008 , Y02B70/16
摘要： An electric power supply control device comprises AC/DC converter, DC/DC converters, and an output electrical voltage monitor unit of the AC/DC converter. When output electrical voltage of the AC/DC converter increases to the first preset value P1, the AC/DC converter stops the convert. When the output electrical voltage decreases to the second preset value P2, the AC/DC converter restarts the convert. The first preset value P1 is equal to or less than the lowest value, out of the upper limit values in electrical voltage ranges in which the DC/DC converters CV1 and CV2 can work. The second preset value P2 is more than or equal to the highest value, out of the lower limit values in electrical voltage ranges in which the DC/DC converters CV1 and CV2 can work.
摘要翻译： 电源控制装置包括AC / DC转换器，DC / DC转换器和AC / DC转换器的输出电压监视器单元。 当AC / DC转换器的输出电压升高到第一预设值P1时，AC / DC转换器停止转换。 当输出电压降至第二预设值P2时，AC / DC转换器重新启动转换。 在DC / DC转换器CV1和CV2可以工作的电压范围内，第一预置值P1等于或小于最低值。 在DC / DC转换器CV1和CV2可以工作的电压范围内，第二预设值P2大于或等于最大值。
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公开(公告)号：US20180120742A1
公开(公告)日：2018-05-03
申请号：US15793765
申请日：2017-10-25
申请人： Konica Minolta, Inc.
CPC分类号： G03G15/2039 , G03G15/5004 , G03G15/80 , G03G2215/00666
摘要： A phase control device includes: at least one switching element connected to an AC power source, the switching element being capable of: turning on and off at specified timings; delivering AC power to a load upon turn-on and cutting it off upon turn-off; and keeping an on-time from the start to the end of turn-on and an off-time from the start to the end of turn-off, the on-time and off-time being variable; a timing setting portion that sets a turn-on and turn-off timing for turning on and off the switching element; a judgment portion that judges whether or not the turn-on and turn-off timing are on at a phase within a first or second phase range; and a processor that starts turning on and off the switching element at the turn-on and turn-off timing, the processor being capable of adjusting the on-time and off-time depending on the judgment result.
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公开(公告)号：US20160337539A1
公开(公告)日：2016-11-17
申请号：US15135766
申请日：2016-04-22
申请人： KONICA MINOLTA, INC.
发明人： Junichi MASUDA , Mikiyuki AOKI , Masahiro NONOYAMA , Taku KIMURA
CPC分类号： H04N1/00888 , H02J5/00 , H02M3/156 , H02M3/33507 , H02M7/00 , H02M7/06 , H02M2001/0006 , H02M2001/007 , H04N1/00899 , H04N2201/0094
摘要： A power control device receiving supply of power from a power source, the power control device including: a power accumulator accumulating a part of power from the power source; a first voltage converter receiving power from the power source and the power accumulator, performing voltage conversion to a first target voltage, and supplying power with the first target voltage to a first load; a second voltage converter receiving power from the first voltage converter, performing voltage conversion to a second target voltage, and supplying power with the second target voltage to a second load; a power source monitor monitoring power from the power source; and a power controller lowering the first target voltage to a level that the second voltage converter is capable of converting to the second target voltage when the power source monitor detects that the supply of power from the power source has stopped.
摘要翻译： 一种从电源接收电力的电力控制装置，所述电力控制装置包括：积蓄器，其从所述电源蓄积一部分电力; 第一电压转换器，从所述电源和所述蓄电器接收电力，对第一目标电压进行电压转换，并将第一目标电压的功率提供给第一负载; 从第一电压转换器接收电力的第二电压转换器，对第二目标电压进行电压转换，并将第二目标电压的电力提供给第二负载; 监视来自电源的电源的电源监视器; 以及功率控制器，当电源监视器检测到来自电源的电力供应已经停止时，将第一目标电压降低到能够转换为第二目标电压的电平。
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公开(公告)号：US20160124356A1
公开(公告)日：2016-05-05
申请号：US14869153
申请日：2015-09-29
申请人： KONICA MINOLTA, INC.
IPC分类号： G03G15/20
CPC分类号： G03G15/5004 , G03G15/2039 , G03G15/205 , G03G15/80 , G03G2215/0132
摘要： An image forming apparatus includes: a fixing part including a heater, and a first temperature detection part configured to detect the temperature of the heater; a chopper circuit including a reactor, a freewheeling element, and a switching element, the chopper circuit being configured to switch an input direct current on and off in a specified duty cycle by using the switching element and to supply the current to the heater; and a control part configured to control the duty cycle based on a detection result obtained by the first temperature detection part, as well as to control a switching frequency of the switching element based on an operation mode of the image forming apparatus.
摘要翻译： 图像形成装置包括：固定部，包括加热器;第一温度检测部，被配置为检测加热器的温度; 包括电抗器，续流元件和开关元件的斩波电路，所述斩波电路被配置为通过使用所述开关元件在指定的占空比中切换输入直流电流并将电流提供给所述加热器; 以及控制部，其被配置为基于由所述第一温度检测部获得的检测结果来控制所述占空比，以及基于所述图像形成装置的操作模式来控制所述开关元件的开关频率。
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公开(公告)号：US20180148288A1
公开(公告)日：2018-05-31
申请号：US15800400
申请日：2017-11-01
申请人： KONICA MINOLTA, INC.
发明人： Shun SUGAI , Kazuhiko KOWASE , Hideaki KOMIYAMA , Mikiyuki AOKI
CPC分类号： B65H7/02 , B65H2220/03 , B65H2301/50 , B65H2511/13 , B65H2515/112 , B65H2515/712 , B65H2553/23 , B65H2801/06 , G01B7/087 , B65H2220/01
摘要： A sheet conveying apparatus capable of conveying a sheet as a conveyance target in a conveyance path includes a detector that detects capacitance in a predetermined detection region in the conveyance path; and a basis weight identifier that identifies a basis weight of the sheet as the conveyance target on the basis of first capacitance detected by the detector while the sheet as the conveyance target does not pass through the detection region and second capacitance detected by the detector while the sheet as the conveyance target passes through the detection region.
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公开(公告)号：US20170261892A1
公开(公告)日：2017-09-14
申请号：US15440741
申请日：2017-02-23
申请人： KONICA MINOLTA, INC.
发明人： Mikiyuki AOKI , Seiichi KIRIKUBO , Taku KIMURA , Akinori KIMATA , Takeshi TAMADA
CPC分类号： G03G15/205 , G03G15/2039 , G03G15/80
摘要： A power supply control device including a chopper circuit generating a heater current for a halogen heater, a current feedback circuit generating a current feedback signal indicating a current amount based on an amount of the heater current, and a constant current circuit performing pulse-width modulation of the heater current amount according to a difference between a target heater current amount and the current amount indicated by the current feedback signal. The current feedback circuit switches between methods at least including a first method and a second method for generating the current feedback signal. The current feedback signal indicates a greater current amount with the first method than with the second method, and the current feedback circuit uses the first method during a period with a predetermined time length starting from when the halogen heater is turned on, and uses the second method after elapse of the period.
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