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1. 发明授权

US06453139B2 Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：US06453139B2
公开(公告)日：2002-09-17
申请号：US09758286
申请日：2001-01-12
申请人： Hiroshi Sasame , Hiroaki Ogata , Yasunari Watanabe , Shinya Yamamoto , Motoki Adachi
发明人： Hiroshi Sasame , Hiroaki Ogata , Yasunari Watanabe , Shinya Yamamoto , Motoki Adachi
IPC分类号： G03G1500
CPC分类号： G03G15/0194 , G03G2215/0119
摘要： In an image forming apparatus adapted to form images by employing a plurality of image bearing members, when a monocolor mode is selected, no toner image is formed on photosensitive drums of the colors other than the photosensitive drum on which a black toner image is formed. However, the photosensitive drums of the remaining colors continue to run while maintaining a speed difference in a four-full-color mode in relation to an intermediary transfer belt. As a result, some photosensitive drums reach their service life even if the toners contained in developing devices have not yet run out or even if images have not yet been formed on a predetermined number of transfer materials. To solve the problem, the peripheral speed of each of the photosensitive drums in the black monocolor mode for producing monochrome images is set to be faster than that in the full-color mode so as to make the peripheral speed virtually equal to the moving speed of the intermediary transfer belt.
摘要翻译：在适于通过使用多个图像承载部件形成图像的图像形成装置中，当选择单色模式时，在形成黑色调色剂图像的感光鼓之外的感光鼓的感光鼓上不形成调色剂图像。然而，与中间转印带相比，剩余颜色的感光鼓继续运行，同时以四全色模式保持速度差。结果，即使容纳在显影装置中的调色剂尚未耗尽或即使图像尚未形成在预定数量的转印材料上，一些感光鼓也能够达到其使用寿命。为了解决这个问题，用于产生单色图像的黑色单色模式中的每个感光鼓的圆周速度被设置为比全色模式更快，使得圆周速度实际上等于中间转印带。

2. 发明授权

US06532347B2 Method of controlling an AC voltage applied to an electrifier 有权
标题翻译：控制施加到电气设备的交流电压的方法
公开(公告)号：US06532347B2
公开(公告)日：2003-03-11
申请号：US09761720
申请日：2001-01-18
申请人： Yasunari Watanabe , Motoki Adachi
发明人： Yasunari Watanabe , Motoki Adachi
IPC分类号： G03G1502
CPC分类号： G03G15/0266 , G03G2215/021
摘要： A control method of a voltage to be applied to an electrifier includes the steps of measuring an integral value of an alternating waveform, and controlling an alternating current so that the integral value is constant in a predetermined time.
摘要翻译：要施加到电气装置的电压的控制方法包括以下步骤：测量交变波形的积分值，并且控制交流电流，使得积分值在预定时间内是恒定的。

3. 发明授权

US07194226B2 Image forming apparatus featuring an image bearing member charged by a charging means and a developer charge providing means 有权
标题翻译：图像形成装置具有由充电装置充电的图像承载部件和显影剂充电提供装置
公开(公告)号：US07194226B2
公开(公告)日：2007-03-20
申请号：US10268723
申请日：2002-10-11
申请人： Motoki Adachi , Yasunari Watanabe
发明人： Motoki Adachi , Yasunari Watanabe
IPC分类号： G03G15/00
CPC分类号： G03G21/0064 , G03G2215/021 , G03G2221/0005
摘要： The invention provides an image forming apparatus provided with an image bearing body, and developer charge providing device for providing a charge thereby charging residual developer, remaining on the image bearing body after image transfer, to a normal polarity. The developer charge providing device charges an area of the image bearing body, and such area is further charged by the charging device. When the voltage applied to the developer charge providing device for charging such area is, varied, the voltage applied to the charging means for charging such area is also varied. Thus the image forming apparatus can execute uniform charging in stable manner over a prolonged period.
摘要翻译：本发明提供了一种具有图像承载体的图像形成装置和用于提供电荷的显影剂充电提供装置，从而将残留的图像转印后的图像承载体上残留的显影剂充电至正常极性。显影剂充电提供装置对图像承载体的区域充电，并且该区域由充电装置进一步充电。当施加到用于对该区域充电的显影剂充电提供装置的电压变化时，施加到用于对该区域充电的充电装置的电压也是变化的。因此，图像形成装置可以在长时间内以稳定的方式执行均匀充电。

4. 发明授权

US06999690B2 Image forming apparatus 失效
标题翻译：图像形成装置
公开(公告)号：US06999690B2
公开(公告)日：2006-02-14
申请号：US10617024
申请日：2003-07-11
申请人： Yasunari Watanabe , Motoki Adachi
发明人： Yasunari Watanabe , Motoki Adachi
IPC分类号： G03G15/02
CPC分类号： G03G15/0266 , G03G2215/021
摘要： Provided is an image forming apparatus including a unit for controlling each voltage value of peak-to-peak voltages of DC and AC voltages applied to a charging unit for charging an image bearing member, in which a residual charge eliminating unit conducts charge elimination on a surface of the image bearing member while at least the charging unit undergoes an application of the AC voltage including the peak-to-peak voltage that is, in the case of setting at Vth a discharge start voltage to the image bearing member when applying the DC voltage to the charging unit, twice or smaller than this discharge start voltage Vth. With this image forming apparatus, it is possible to restrain an occurrence of a defect in an image which is attributable to an instability of a charging potential on the image bearing member by stabilizing a potential on the image bearing member at zero even in a case where the AC voltage applied to the charging unit for the image bearing member is the peak-to-peak voltage that is twice or smaller than Vth.
摘要翻译：提供了一种图像形成装置，包括：用于控制施加到用于对图像承载部件充电的充电单元的DC和AC电压的峰 - 峰电压的每个电压值的单元，其中剩余电荷消除单元在至少在充电单元施加包括峰 - 峰电压的AC电压的情况下，图像承载部件的表面，在施加DC时，在将Vth设定为图像承载部件的放电开始电压的情况下充电单元的电压为该放电开始电压Vth的2倍以上。利用该图像形成装置，通过使图像承载部件上的电位稳定在零，即使在图像承载部件上的电位不稳定的图像中也可以抑制图像中的缺陷的发生，即使在施加到图像承载部件的充电单元的AC电压是峰值电压，其峰值电压是Vth的两倍或者更小。

5. 发明授权

US06421512B2 Image forming apparatus with image bearing member charger that reduces the amount of toner electric charge 有权
标题翻译：具有图像承载部件充电器的图像形成装置，其减少调色剂电荷的量
公开(公告)号：US06421512B2
公开(公告)日：2002-07-16
申请号：US09749540
申请日：2000-12-28
申请人： Yasunari Watanabe , Motoki Adachi , Masao Uyama
发明人： Yasunari Watanabe , Motoki Adachi , Masao Uyama
IPC分类号： G03G1530
CPC分类号： G03G15/0216 , G03G21/0064 , G03G21/007 , G03G2215/021 , G03G2221/0005
摘要： An image forming apparatus includes an image bearing member for bearing an electrostatic image; a developing unit for developing the electrostatic image on the image bearing member with toner electrically charged to a predetermined polarity; a transfer unit for transferring the toner image from the image bearing member to a transfer material; a toner charging unit for electrically charging residual toner remaining on the image bearing member to the same polarity as the predetermined polarity; and an image bearing member charging unit for contacting to the image bearing member carrying the toner charged by the toner charging unit to electrically charge the image bearing member to the same polarity as the predetermined polarity, the image bearing member charging unit being effective to reduce a charge amount of the toner.
摘要翻译：图像形成装置包括用于承载静电图像的图像承载部件; 显影单元，用于利用调色剂充电到预定极性来使图像承载部件上的静电图像显影; 转印单元，用于将调色剂图像从图像承载部件转印到转印材料上; 调色剂充电单元，用于将剩余在图像承载部件上的残留调色剂充电至与预定极性相同的极性; 以及图像承载部件充电单元，用于与承载由调色剂充电单元充电的调色剂的图像承载部件接触，以对图像承载部件进行与预定极性相同的极性，图像承载部件充电单元有效地减小调色剂的充电量。

6. 发明授权

US06611668B2 Image forming apparatus with residual developing charging feature 失效
标题翻译：具有残留显影充电特征的图像形成装置
公开(公告)号：US06611668B2
公开(公告)日：2003-08-26
申请号：US10231275
申请日：2002-08-30
申请人： Yasunari Watanabe , Motoki Adachi
发明人： Yasunari Watanabe , Motoki Adachi
IPC分类号： G03G1500
CPC分类号： G03G21/0064 , G03G2215/021 , G03G2221/0005
摘要： In order not to expel toner excessively when bias is applied, a cleanerless image forming apparatus includes a first developer charge amount controlling device 7, provided on a downstream side of a transfer device 5 in a moving direction of an image bearing member 1, e.g. a photosensitive drum, for applying a DC bias for making uniform a charge amount of residual developer remaining on the image bearing member 1, and/or a second developer charge amount controlling device 8, provided on a downstream side of the first developer charge amount controlling device 7 in a rotating direction of the image bearing member 1, for applying a DC bias for charging the residual developer in a normal polarity. An absolute value of a slope of the DC voltage applied to the first developer charge amount controlling device 7 and/or an absolute value of a slope of the DC voltage applied to the second developer charge amount controlling device 8 are equal to 2000 V/sec or smaller.
摘要翻译：为了在施加偏压时不会过度地排出调色剂，无清洁器的图像形成装置包括：第一显影剂充电量控制装置7，设置在图像承载部件1的移动方向上的转印装置5的下游侧。感光鼓，用于施加DC偏压以使图像承载部件1上剩余的残留显影剂的电荷量均匀;和/或第二显影剂充电量控制装置8，设置在第一显影剂充电量控制的下游侧装置7沿着图像承载部件1的旋转方向，用于施加用于以正常极性对残余显影剂充电的DC偏压。施加到第一显影剂充电量控制装置7的DC电压的斜率的绝对值和/或施加到第二显影剂充电量控制装置8的DC电压的斜率的绝对值等于2000V /秒或更小。

7. 发明授权

US06744994B2 Image forming apparatus with environmentally-controlled first and second charging members 失效
标题翻译：具有环境控制的第一和第二充电构件的图像形成装置
公开(公告)号：US06744994B2
公开(公告)日：2004-06-01
申请号：US10233507
申请日：2002-09-04
申请人： Tadanobu Yoshikawa , Yasunari Watanabe , Motoki Adachi
发明人： Tadanobu Yoshikawa , Yasunari Watanabe , Motoki Adachi
IPC分类号： G03G1500
CPC分类号： G03G21/0064 , G03G2215/021 , G03G2221/0005
摘要： An image forming apparatus includes an image bearing member, a first charging member for charging a residual developer on the image bearing member, a second charging member for charging the residual developer, an environmental condition detector, and a controller. The first charging member is disposed downstream of the transferring device and up stream of the charger, with respect to a movement direction of the image bearing member. A voltage having a polarity opposite to a polarity of the developer is applied to the first charging member. The second charging member is disposed downstream of the first charging member and upstream of the charger. A voltage having a polarity like a polarity of the developer is applied to the second charging member. The controller, in accordance with an output of the detector, controls at least one of the voltages applied to the first and second charging members.
摘要翻译：图像形成装置包括图像承载部件，用于对图像承载部件上的残留显影剂充电的第一充电部件，用于对残留显影剂充电的第二充电部件，环境条件检测器和控制器。相对于图像承载部件的运动方向，第一充电部件设置在传送装置的下游和充电器的上游。具有与显影剂的极性相反的极性的电压被施加到第一充电部件。第二充电构件设置在第一充电构件的下游和充电器的上游。将具有极性的显影剂极性的电压施加到第二充电部件。控制器根据检测器的输出控制施加到第一和第二充电部件的电压中的至少一个。

8. 发明授权

US06640063B2 Image forming apparatus featuring first and second peak-to-peak charging voltages, respectively, corresponding to first and second image bearing member speeds and voltage frequencies 有权
标题翻译：图像形成装置分别具有对应于第一和第二图像承载部件速度和电压频率的第一和第二峰值到峰值充电电压
公开(公告)号：US06640063B2
公开(公告)日：2003-10-28
申请号：US10015579
申请日：2001-12-17
申请人： Motoki Adachi , Yasunari Watanabe
发明人： Motoki Adachi , Yasunari Watanabe
IPC分类号： G03G1502
CPC分类号： G03G15/0216
摘要： An image forming apparatus includes an image bearing member and a charging member in proximity or in contact with the image bearing member. A frequency of an oscillating voltage is a first frequency when a peripheral speed of the image bearing member is a first peripheral speed, and the frequency of the oscillating voltage is a second frequency when the peripheral speed of the image bearing member is a second peripheral speed. A determining device determines a first peak-to-peak voltage of the oscillating voltage corresponding to the first peripheral speed and the first frequency and a second peak-to-peak voltage of the oscillating voltage corresponding to the second peripheral speed and the second frequency, based on first, second and third alternating currents flowing in the charging member in use of the first peripheral speed and the first frequency. The determined peak-to-peak voltages are applied to the charging member.
摘要翻译：图像形成装置包括与图像承载部件接近或接触的图像承载部件和充电部件。当图像承载部件的圆周速度为第一圆周速度时，振荡电压的频率为第一频率，当图像承载部件的圆周速度为第二圆周速度时，振荡电压的频率为第二频率。确定装置确定对应于第一圆周速度和第一频率的振荡电压的第一峰峰值电压和对应于第二圆周速度和第二频率的振荡电压的第二峰峰值电压，基于使用第一圆周速度和第一频率在充电部件中流动的第一，第二和第三交流电流。确定的峰 - 峰电压被施加到充电部件。

9. 发明授权

US06603941B2 Image forming apparatus including first and second charge-applying devices disposed between developer transfer and charging positions on an image bearing body 有权
标题翻译：图像形成装置包括设置在图像承载体上的显影剂转移和充电位置之间的第一和第二充电施加装置
公开(公告)号：US06603941B2
公开(公告)日：2003-08-05
申请号：US09957249
申请日：2001-09-21
申请人： Yasunari Watanabe , Motoki Adachi
发明人： Yasunari Watanabe , Motoki Adachi
IPC分类号： G03G2100
CPC分类号： G03G15/0266 , G03G21/0064 , G03G2215/021 , G03G2221/0005
摘要： An image forming apparatus includes an image bearing body, a charging device for charging the image bearing body, a developing device for forming a developer image by developing an electrostatic image formed on the image bearing body, a transferring device for transferring the developer image to an image-receiving member, and first and second charge-applying devices. The first charge-applying device is provided at a downstream side of the transferring device and at an upstream side of the charging device in a moving direction of the image bearing body, for charging a residual developer remaining on the image bearing body after a transfer effected by the transferring device to a polarity opposite to a normal charging polarity of the developer. The second charge-applying device is provided at a downstream side of the first charge-applying device and at the upstream side of the charging device in the moving direction of the image bearing body, for charging the residual developer charged by the first charge-applying device to a same polarity as the normal charging polarity of the developer, wherein the charging device applies a charge to the residual developer charged by the second charge-applying device.
摘要翻译：图像形成装置包括图像承载体，用于对图像承载体充电的充电装置，用于通过显影形成在图像承载体上的静电图像来形成显影剂图像的显影装置，用于将显影剂图像转印到图像接收部件以及第一和第二充电装置。第一充电装置设置在转印装置的下游侧，并且在图像承载体的移动方向上位于充电装置的上游侧，用于在转印后对残留在图像承载体上的剩余显影剂充电通过转印装置达到与显影剂的正常充电极性相反的极性。第二充电装置设置在第一充电装置的下游侧，并且在图像承载体的移动方向上在充电装置的上游侧，用于对通过第一充电施加充电的残留显影剂充电装置与显影剂的正常充电极性相同的极性，其中充电装置向由第二充电装置充电的残余显影剂施加电荷。

10. 发明授权

US09146490B2 Image forming apparatus having duel color image forming control modes 有权
标题翻译：具有决斗彩色图像形成控制模式的图像形成装置
公开(公告)号：US09146490B2
公开(公告)日：2015-09-29
申请号：US13454294
申请日：2012-04-24
申请人： Yasunari Watanabe
发明人： Yasunari Watanabe
IPC分类号： G03G15/01 , G03G15/16
CPC分类号： G03G15/0136 , G03G15/0189 , G03G15/161 , G03G15/1675 , G03G15/168
摘要： An image forming apparatus includes a first toner image bearing member, a second drum, an intermediary transfer member, or belt, a secondary transfer member, a toner charging member, and a controller for controlling an operation in a single-color image forming mode and an operation in a multi-color image forming mode. The controller effects, in a post-processing operation after the operation in the single-color image forming mode in which the toner image is formed on the first drum is ended, control such that a separation state between the drum and belt is switched to a contact state between the image bearing member and belt and then the toner deposited on the toner charging member is collected onto the second drum via the belt and then is collected by a cleaning device provided for the second drum.
摘要翻译：图像形成装置包括第一调色剂图像承载部件，第二转鼓，中间转印部件或带，二次转印部件，调色剂充电部件和用于控制单色图像形成模式中的操作的控制器，以及在多色图像形成模式中的操作。控制器在其中在第一鼓上形成调色剂图像的单色图像形成模式中的操作结束之后的后处理操作结束时，控制使得鼓和皮带之间的分离状态被切换到图像承载部件和皮带之间的接触状态，然后沉积在调色剂充电部件上的调色剂经由带收集到第二滚筒上，然后由设置在第二滚筒上的清洁装置收集。

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