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公开(公告)号：US09046830B2
公开(公告)日：2015-06-02
申请号：US14173122
申请日：2014-02-05
IPC分类号： G03G15/16
CPC分类号： G03G15/1675 , G03G15/1605
摘要： An image forming apparatus includes a rotatable image bearing member, a nip forming member, and a power source. The rotatable image bearing member bears a toner image on a surface thereof and rotates. The nip forming member contacts the surface of the image bearing member to form a transfer nip therebetween. The power source applies a transfer bias to the transfer nip to transfer the toner image from the image bearing member onto a recording medium interposed in the transfer nip. The transfer bias includes a superimposed transfer bias in which an alternating current (AC) component is superimposed on a direct current (DC) component and a polarity of the superimposed transfer bias changes with time. A phase difference between an AC voltage and an AC current output from the power source is equal to or less than 0.47 cycles.
摘要翻译： 图像形成装置包括可旋转图像承载部件，辊隙形成部件和动力源。 可旋转图像承载部件在其表面上承载调色剂图像并旋转。 辊隙形成构件接触图像承载构件的表面以在它们之间形成转印辊隙。 电源将转印偏压施加到转印压区，以将调色剂图像从图像承载部件转印到介于转印辊隙中的记录介质上。 转印偏压包括其中交流（AC）分量叠加在直流（DC）分量上并且叠加转印偏压的极性随时间变化的叠加转印偏压。 交流电压与从电源输出的交流电流之间的相位差等于或小于0.47个周期。
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公开(公告)号：US08965227B2
公开(公告)日：2015-02-24
申请号：US13785621
申请日：2013-03-05
CPC分类号： G03G15/1675 , G03G15/1605 , G03G15/556 , G03G15/6591
摘要： An image forming apparatus includes a toner forced consumption control unit that performs toner forced consumption control in which toner in a developing unit is forcibly consumed when a certain condition to perform the toner forced consumption control is met. The certain condition to perform the toner forced consumption control includes a specific performance condition that a transfer bias switching condition to switch a transfer bias to a superimposed transfer bias in which an alternating current component is superimposed on a direct current component, from a direct current transfer bias is met. When the specific performance condition is met, the toner forced consumption control unit performs preliminary toner forced consumption control in which the toner forced consumption control is performed before an image forming operation using the superimposed transfer bias is started.
摘要翻译： 图像形成装置包括调色剂强制消耗控制单元，其执行调色剂强制消耗控制，其中当执行调色剂强制消耗控制的特定条件时，显影单元中的调色剂被强制消耗。 执行调色剂强制消耗控制的特定条件包括：特定的性能条件，即转印偏压切换条件，其将转印偏压切换到其中交流分量叠加在直流分量上的叠加转印偏压，从直流转印 偏见得到满足。 当满足特定性能条件时，调色剂强制消耗控制单元在开始使用叠加的转印偏压的图像形成操作之前执行调色剂强制消耗控制的初步调色剂强制消耗控制。
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公开(公告)号：US08682231B2
公开(公告)日：2014-03-25
申请号：US13417637
申请日：2012-03-12
IPC分类号： G03G15/16
CPC分类号： G03G21/0023 , G03G15/0131 , G03G15/161 , G03G15/1675 , G03G15/5058 , G03G2215/0129 , G03G2215/1661
摘要： An image forming apparatus includes an image bearing member, an image forming unit for forming a toner image and a toner pattern comprising toner not to be transferred onto a recording medium for adjustment of a density of toner on a surface of the image bearing member, a nip forming member contacting the surface of the image bearing member to form a transfer nip therebetween, a transfer bias applicator for applying a transfer bias in which an alternating current component and a direct current component are superimposed to transfer the toner image onto the recording medium in the transfer nip, a first cleaning device to mechanically remove toner remaining on the image bearing member after passing through the transfer nip. The transfer bias applicator applies a charge eliminating bias to remove charge from toner in the toner pattern when the toner pattern passes through the transfer nip.
摘要翻译： 图像形成装置包括图像承载部件，用于形成调色剂图像的图像形成单元和包含不转印到用于调节图像承载部件的表面上的调色剂的密度的记录介质上的调色剂的调色剂图案， 夹持形成部件与图像承载部件的表面接触以在其间形成转印辊隙;转印偏压施加器，用于施加转印偏压，其中叠加交流分量和直流分量以将调色剂图像转印到记录介质上 转印辊隙，第一清洁装置，用于在通过转印辊隙之后机械地除去残留在图像承载部件上的调色剂。 当调色剂图案通过转印辊隙时，转印偏压施加器施加电荷消除偏压以从调色剂图案中的调色剂中去除电荷。
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公开(公告)号：US20140079418A1
公开(公告)日：2014-03-20
申请号：US14022512
申请日：2013-09-10
IPC分类号： G03G15/16
CPC分类号： G03G15/16 , G03G15/1605 , G03G15/1675 , G03G2215/00717
摘要： An image forming apparatus includes a power source to output a voltage having an alternating waveform to transfer a toner image from an image bearing member to a recording medium. A time-averaged value (Vave) of the voltage has a polarity in a transfer direction, in which the toner image is transferred from the image bearing member to the recording medium, and an absolute value of the time-averaged value is greater than a midpoint value (Voff) of the voltage intermediate between a maximum value and a minimum value of the voltage. As a roughness of the recording medium increases, a duty ratio (Duty) expressed by A/(A+B) is reduced, where A is an area of the waveform of the voltage in a return direction opposite the transfer direction relative to the midpoint value in one cycle and B is an area in the transfer direction relative to the midpoint value.
摘要翻译： 图像形成装置包括用于输出具有交替波形的电压的电源，以将调色剂图像从图像承载部件转印到记录介质。 电压的时间平均值（Vave）在传送方向上具有调色剂图像从图像承载部件传送到记录介质的极性，并且时间平均值的绝对值大于 电压的最大值和最小值之间的电压的中点值（Voff）。 随着记录介质的粗糙度的增加，由A /（A + B）表示的占空比（Duty）减小，其中A是相对于中点在与传送方向相反的返回方向上的电压波形的面积 一个循环中的值，B是相对于中点值的传送方向的面积。
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公开(公告)号：US20130308968A1
公开(公告)日：2013-11-21
申请号：US13893594
申请日：2013-05-14
IPC分类号： G03G15/16
CPC分类号： G03G15/1665 , G03G15/1675
摘要： An image forming apparatus includes a transfer bias output device and an information receiving device. The transfer bias output device outputs a transfer bias including a superimposed bias composed of an AC bias superimposed on a DC bias to form a transfer electric field in a transfer nip between an image bearing member bearing a toner image and a nip forming member, to transfer the toner image onto a recording medium in the transfer nip. A controller operatively connected to the information receiving device and the transfer bias output device causes the transfer bias output device to change a target output of a peak-to-peak voltage of the AC bias based on information received by the information receiving device that affects transfer of the toner image and to reduce a target output of the DC bias as the target output value of the peak-to-peak voltage of the AC bias increases.
摘要翻译： 图像形成装置包括转印偏压输出装置和信息接收装置。 转印偏压输出装置输出包括由叠加在DC偏压上的AC偏压组成的叠加偏压的转印偏压，以在承载调色剂图像的图像承载部件和辊隙形成部件之间的转印辊隙中形成转印电场，以转印 调色剂图像转印到转印辊隙中的记录介质上。 可操作地连接到信息接收装置和转移偏置输出装置的控制器使得转移偏置输出装置基于影响转移的信息接收装置接收的信息来改变AC偏压的峰峰值电压的目标输出 并且当AC偏压的峰 - 峰电压的目标输出值增加时，减小DC偏压的目标输出。
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公开(公告)号：US20130195483A1
公开(公告)日：2013-08-01
申请号：US13747629
申请日：2013-01-23
IPC分类号： G03G15/16
CPC分类号： G03G15/1645 , G03G15/0189 , G03G15/1605 , G03G15/5029 , G03G2215/00751
摘要： A transfer device includes a transfer bias power source, a switching device, and a sheet dependent condition setting device. The transfer bias power source applies to a transfer member, based on sheet dependent conditions for a recording medium onto which a toner image is transferred, one of a DC transfer bias and a superimposed transfer bias including an alternating current (AC) component superimposed on a DC component. The switching device switches a transfer mode between a DC transfer mode in which the DC transfer bias is applied to the transfer device and a superimposed-bias transfer mode in which the superimposed transfer bias is applied to the transfer device. The sheet dependent condition setting device sets arbitrarily at least one of the sheet dependent conditions for the recording medium at the superimposed-bias transfer mode. The sheet dependent conditions include a DC component value and an AC component value.
摘要翻译： 转印装置包括转印偏压电源，开关装置和片材相关条件设定装置。 转印偏压电源基于转印有调色剂图像的记录介质的片材相关条件，转印偏压电源施加到转印偏压电源，其中DC转印偏压和包括交叠电流（AC）分量叠加在一起的叠加转印偏压 直流分量。 切换装置在其中向转印装置施加DC转印偏压的DC转印模式和向转印装置施加叠加的转印偏压的叠加偏压转印模式之间切换转印模式。 片材相关条件设定装置以叠加偏置传送模式任意设定记录介质的片材相关条件中的至少一个。 片材相关条件包括DC分量值和AC分量值。
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公开(公告)号：US20130136477A1
公开(公告)日：2013-05-30
申请号：US13680629
申请日：2012-11-19
申请人： Hiromi OGIYAMA , Tomokazu Takeuchi , Yasunobu Shimizu , Kenji Sengoku , Hiroyoshi Haga , Shinya Tanaka
发明人： Hiromi OGIYAMA , Tomokazu Takeuchi , Yasunobu Shimizu , Kenji Sengoku , Hiroyoshi Haga , Shinya Tanaka
IPC分类号： G03G15/16
CPC分类号： G03G15/18 , G03G15/1605 , G03G15/1675 , G03G15/5029
摘要： An image forming apparatus includes a controller and a transfer device including a power source to output a superimposed bias in which an AC voltage is superimposed on a DC voltage, a first electrode, a second electrode disposed opposite the first electrode with an image bearing member interposed therebetween to form a transfer electric field to transfer a toner image on the image bearing member to a recording medium. The controller including a CPU adjusts the transfer electric field and a transfer speed. One of the first electrode and the second electrode is connected to the power source, and the other is grounded. The controller adjusts the transfer speed such that in a case in which an oscillating electric field of the transfer electric field is strong, a maximum transfer speed is slower than the maximum transfer speed in a case in which the oscillating electric field is weak.
摘要翻译： 一种图像形成装置包括控制器和传送装置，该传送装置包括：电源，用于输出交流电压叠加在直流电压上的重叠偏压;第一电极，与第一电极相对设置的第二电极， 以形成转印电场，以将图像承载部件上的调色剂图像转印到记录介质上。 包括CPU的控制器调节传输电场和传送速度。 第一电极和第二电极中的一个连接到电源，另一个接地。 控制器调节传送速度，使得在转移电场的振荡电场强的情况下，在振荡电场较弱的情况下，最大传输速度比最大传送速度慢。
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公开(公告)号：US20130094870A1
公开(公告)日：2013-04-18
申请号：US13633341
申请日：2012-10-02
IPC分类号： G03G15/16
CPC分类号： G03G15/1605 , G03G15/1675
摘要： An image transfer device includes an image bearing member, a pair of opposed transfer members, a media separator, and an electrical bias applicator. The image bearing member defines an image bearing surface on which a toner image is created. The pair of opposed transfer members is disposed opposite each other via the image bearing member to form a transfer nip therebetween through which a recording medium is passed. One of the transfer members defines a first electrode to which a first electrical bias is applied. The media separator defines a second electrode downstream from the transfer nip to which a second electrical bias is applied. The electrical bias applicator includes a power supply connectable with each of the first and second electrodes to supply the first electrical bias to the first electrode and the second electrical bias to the second electrode.
摘要翻译： 图像转印装置包括图像承载部件，一对相对的转印部件，介质分离器和电偏压施加器。 图像承载构件限定其上产生调色剂图像的图像承载表面。 一对相对的转印部件经由图像承载部件彼此相对设置，以在记录介质通过该转印辊隙之间形成转印辊隙。 传输构件之一限定了施加第一电偏压的第一电极。 介质分离器限定了施加第二电偏压的转印辊隙下游的第二电极。 电偏压施加器包括可与第一和第二电极中的每一个连接的电源，以将第一电偏压提供给第一电极，并将第二电偏压提供给第二电极。
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公开(公告)号：US20130016989A1
公开(公告)日：2013-01-17
申请号：US13527153
申请日：2012-06-19
申请人： Junpei FUJITA , Tomokazu Takeuchi , Hiroyoshi Haga , Hiromi Ogiyama , Yasunobu Shimizu , Kenji Sengoku
发明人： Junpei FUJITA , Tomokazu Takeuchi , Hiroyoshi Haga , Hiromi Ogiyama , Yasunobu Shimizu , Kenji Sengoku
IPC分类号： G03G15/00
CPC分类号： G03G15/00 , G03G15/1605 , G03G15/1675
摘要： An image forming apparatus includes an image bearing member, a transfer unit, a control circuit board, and a power supply module detachably attachable relative to the image forming apparatus. The image bearing member bears a toner image on a surface thereof. The transfer unit includes a transfer device to transfer the toner image onto a recording medium and is disposed opposite the image bearing member. The control circuit board controls the transfer unit. The power supply module is disposed in the transfer unit and includes a power source to apply, between the image bearing member and the transfer device, an AC-DC superimposed bias in which an alternating voltage (AC) is superimposed on a direct current (DC) voltage to form a transfer electric field to transfer the toner image from the image bearing member onto the recording medium.
摘要翻译： 图像形成装置包括图像承载部件，转印单元，控制电路板以及相对于图像形成装置可拆卸地安装的电源模块。 图像承载部件在其表面上承载调色剂图像。 转印单元包括将调色剂图像转印到记录介质上并与图像承载部件相对设置的转印装置。 控制电路板控制传送单元。 电源模块设置在传送单元中，并且包括在图像承载部件和传送装置之间施加AC-DC叠加偏压的电源，其中交流电压（AC）叠加在直流电（DC）上 ）电压以形成转印电场，以将调色剂图像从图像承载部件转印到记录介质上。
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公开(公告)号：USD556712S1
公开(公告)日：2007-12-04
申请号：US29254890
申请日：2006-03-02
申请人： Haruki Takita , Yasunobu Shimizu
设计人： Haruki Takita , Yasunobu Shimizu
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