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1. 发明授权

US5666622A Image transferring device and medium separating device for an image forming apparatus 失效
标题翻译：用于图像形成装置的图像转印装置和介质分离装置
公开(公告)号：US5666622A
公开(公告)日：1997-09-09
申请号：US459422
申请日：1995-06-02
申请人： Yuko Harasawa , Itaru Matsuda , Satoshi Takano , Hideo Yu , Yasunori Kawaishi , Hideki Kamiyama , Toshiaki Motohashi , Mitsuru Takahashi , Takashi Bisaiji
发明人： Yuko Harasawa , Itaru Matsuda , Satoshi Takano , Hideo Yu , Yasunori Kawaishi , Hideki Kamiyama , Toshiaki Motohashi , Mitsuru Takahashi , Takashi Bisaiji
IPC分类号： G03G15/00 , G03G15/16
CPC分类号： G03G15/6535 , G03G15/161 , G03G15/1675 , G03G15/1685 , G03G2215/1623 , G03G2215/1661
摘要： The apparatus includes a photoconductive element and a transfer belt, with an electrode or bias applicator located downstream from a nip formed between the photoconductive element and the transfer belt. Upstream from the nip, a roller is provided which can also act as an electrode, or which can be held in an electrically floating state. A bias voltage can be provided to the roller upstream from the nip, with the voltage equal to or less than the voltage applied to the downstream electrode so as form a potential gradient. In addition, the applied voltages can be varied based upon the position of a sheet of paper, or in response to changes in humidity.
摘要翻译：该装置包括光电导元件和转印带，其中电极或偏置施加器位于形成在感光元件和转印带之间的辊隙的下游。在辊隙的上游设置有也可以用作电极的辊子，或者可以保持在电浮动状态。可以向辊隙上游的辊子提供偏置电压，其中电压等于或小于施加到下游电极的电压，从而形成电位梯度。此外，所施加的电压可以基于一张纸的位置或响应于湿度变化而变化。

2. 发明授权

US5461461A Image transferring device and medium separating device for an image forming apparatus 失效
标题翻译：用于图像形成装置的图像转印装置和介质分离装置
公开(公告)号：US5461461A
公开(公告)日：1995-10-24
申请号：US44032
申请日：1993-04-08
申请人： Yuko Harasawa , Itaru Matsuda , Satoshi Takano , Hideo Yu , Yasunori Kawaishi , Hideki Kamiyama , Toshiaki Motohashi , Mitsuru Takahashi , Takashi Bisaiji
发明人： Yuko Harasawa , Itaru Matsuda , Satoshi Takano , Hideo Yu , Yasunori Kawaishi , Hideki Kamiyama , Toshiaki Motohashi , Mitsuru Takahashi , Takashi Bisaiji
IPC分类号： G03G15/00 , G03G15/16 , G03G21/00
CPC分类号： G03G15/6535 , G03G15/161 , G03G15/1675 , G03G15/1685 , G03G2215/1623 , G03G2215/1661
摘要： An image forming apparatus includes a photoconductive element and a transfer belt, with an electrode or bias applicator located downstream from a nip formed between the photoconductive element and the transfer belt. Upstream from the nip, a roller is provided which can also act as an electrode, or which can be held in an electrically floating state. A bias voltage can also be provided to the roller upstream from the nip, with the voltage equal to or less than the voltage applied to the downstream electrode. In addition, the applied voltages can be varied based upon the position of a sheet of paper, or in response to changes in humidity.
摘要翻译：图像形成装置包括光电导元件和转印带，其中电极或偏置施加器位于形成在感光元件和转印带之间的辊隙的下游。在辊隙的上游设置有也可以用作电极的辊子，或者可以保持在电浮动状态。也可以在辊隙上游向辊子提供偏置电压，其电压等于或小于施加到下游电极的电压。此外，所施加的电压可以基于一张纸的位置或响应于湿度变化而变化。

3. 发明授权

US5495317A Image transfer device for an image forming apparatus 失效
标题翻译：用于图像形成装置的图像转印装置
公开(公告)号：US5495317A
公开(公告)日：1996-02-27
申请号：US373893
申请日：1995-01-17
申请人： Itaru Matsuda , Satoshi Takano , Yuko Harasawa
发明人： Itaru Matsuda , Satoshi Takano , Yuko Harasawa
IPC分类号： G03G15/16 , G03G21/00
CPC分类号： G03G15/167
摘要： An image transfer device for a copier, printer, facsimile apparatus or similar image forming apparatus. A transfer belt is rotated and applied with a charge from a first electrode in contact with the transfer belt to transfer a toner image from an image carrier to a transfer medium carried on the transfer belt or to the transfer belt itself. A second electrode contacts the transfer belt. A variable resistance element is connected between the second electrode and ground. A controller produces a ratio of a current applied from the first electrode to the transfer belt and a current from the transfer belt to the second electrode and controls a resistance of the variable resistance element such that the ratio has a predetermined value. Additionally, the resistance of the transfer belt to the variable resistance element is one of 1:1-100, 10:1-100 and 100:1-100.
摘要翻译：用于复印机，打印机，传真机或类似图像形成装置的图像传送装置。转印带旋转并与来自与转印带接触的第一电极的电荷施加，以将调色剂图像从图像载体转印到承载在转印带上的转印介质或转印带本身上。第二电极接触转印带。可变电阻元件连接在第二电极和地之间。控制器产生从第一电极施加到转印带的电流和从转印带到第二电极的电流的比率，并且控制可变电阻元件的电阻，使得该比率具有预定值。此外，转印带对可变电阻元件的电阻为1：1-100，10：1-100和100：1-100之一。

4. 发明授权

US5640660A Image transferring device for image forming equipment 失效
标题翻译：图像形成设备图像传送装置
公开(公告)号：US5640660A
公开(公告)日：1997-06-17
申请号：US449778
申请日：1995-05-24
申请人： Satoshi Takano , Itaru Matsuda , Yuko Harasawa
发明人： Satoshi Takano , Itaru Matsuda , Yuko Harasawa
IPC分类号： B41J29/46 , G03G15/00 , G03G15/14 , G03G15/16 , G03G21/00
CPC分类号： G03G15/1675 , G03G15/1615 , G03G15/1685 , G03G2215/1623 , G03G2215/1661
摘要： An image transferring device incorporated in an image forming apparatus and capable of surely preventing a sheet from wrapping around a photoconductive element and from being incompletely separated from a transfer belt. A transfer bias and discharge are effected to prevent changes in the resistances of the transfer belt and sheet ascribable to changes in environment from translating into changes in a current to flow to the photoconductive element, and to efficiently dissipate a charge deposited on the belt. Various members constituting the device are positioned relative to one another such that the discharging effect is achievable most effectively while preventing the transfer bias from causing dielectric breakdown in any constituent part. For example, if a discharge member is spaced from a transfer electrode by L.sub.3 and if the transfer electrode is spaced from a nip portion between the transfer belt and image bearing member by a distance L.sub.2, than L.sub.3 .gtoreq.L.sub.2. Additionally, if the vokage applied to the transfer electrode is V.sub.O, than L.sub.2 .gtoreq.a.vertline.V.sub.O .vertline., where a is 1.0 (mm/kv); if a distance between the nip and an upstream roller entraining the belt is L.sub.1, than L.sub.1 .gtoreq.a.vertline.V.sub.O .vertline.; and if the distance between to discharge members is L.sub.4, the transfer belt has a time constant of .tau., and a process speed is .nu., than .tau..ltoreq.L.sub.4 /.nu.. Finally, the transfer belt has a double layer structure made up of an outer layer having a surface resistivity of 1.times.10.sup.9 to 1.times.10.sup.12 .OMEGA. and an inner layer having a surface resisitivity of 8.times.10.sup.6 to 8.times.10.sup.8 .OMEGA. and a volume resisitivty of 5.times.10.sup.8 to 5.times.10.sup.10 .OMEGA.cm.
摘要翻译：一种图像转印装置，其结合在图像形成装置中，并且能够可靠地防止片材缠绕在光电导元件周围并且与转印带不完全分离。进行转印偏压和放电，以防止归因于环境变化的转印带和片材的电阻变化，从而转变为流向光导元件的电流变化，并且有效地耗散沉积在带上的电荷。构成装置的各构件相对于彼此定位，使得可以最有效地实现放电效果，同时防止转印偏压在任何构成部分中引起电介质击穿。例如，如果放电构件与转移电极L3隔开，并且如果转印电极与转印带和图像承载部件之间的压合部分间隔距离L2比L3> / = L2。另外，如果施加到转移电极的VOC为VO，则L2> / = a | VO |，其中a为1.0（mm / kv）; 如果辊隙和夹带的上游辊之间的距离为L1，则L1> / = a | VO |; 并且如果排出构件之间的距离为L4，则转印带具有τ的时间常数，并且处理速度为nu，大于τ

5. 发明授权

US5557384A Image transferring device for image forming equipment 失效
标题翻译：图像形成设备图像传送装置
公开(公告)号：US5557384A
公开(公告)日：1996-09-17
申请号：US325078
申请日：1994-10-19
申请人： Satoshi Takano , Itaru Matsuda , Yuko Harasawa
发明人： Satoshi Takano , Itaru Matsuda , Yuko Harasawa
IPC分类号： G03G15/16
CPC分类号： G03G15/1675 , G03G15/1605 , G03G15/1685 , G03G2215/1623 , G03G2215/1661
摘要： An image transferring device incorporated in an image forming apparatus and capable of surely preventing a sheet from wrapping around a photoconductive element and from being incompletely separated from a transfer belt. A transfer bias and discharge are effected to prevent changes in the resistances of the transfer belt and sheet ascribable to changes in environment front translating into changes in a current to flow to the photoconductive element, and to efficiently dissipate a charge deposited on the belt. Various members constituting the device are positioned relative to one another such that the discharging effect is achievable most effectively while preventing the transfer bias from causing dielectric breakdown in any constituent part. A bias roller is held in contact with the transfer belt which is made of a dielectric material. A current I.sub.OUT to flow frown the bias roller to ground via a nip portion between the belt and an image carrier and the image carrier is maintained greater than or equal to a current I.sub.2 to flow from the contact electrode to ground via the belt without the intermediary of the nip portion.
摘要翻译：一种图像转印装置，其结合在图像形成装置中，并且能够可靠地防止片材缠绕在光电导元件周围并且与转印带不完全分离。实现转印偏压和放电，以防止归因于环境变化的转印带和纸张的电阻变化，转变成流向光导元件的电流的变化，并且有效地耗散沉积在带上的电荷。构成装置的各构件相对于彼此定位，使得可以最有效地实现放电效果，同时防止转印偏压在任何构成部分中引起电介质击穿。偏置辊与由电介质材料制成的转印带保持接触。电流IOUT通过带和图像载体之间的压合部分将偏压辊皱折到地，并且图像载体保持大于或等于电流I2，以通过带从接触电极流到地，而没有中间的辊隙部分。

6. 发明授权

US5897241A Image transferring device for image forming equipment 失效
标题翻译：图像形成设备图像传送装置
公开(公告)号：US5897241A
公开(公告)日：1999-04-27
申请号：US754766
申请日：1996-11-20
申请人： Satoshi Takano , Itaru Matsuda , Yuko Harasawa
发明人： Satoshi Takano , Itaru Matsuda , Yuko Harasawa
IPC分类号： B41J29/46 , G03G15/00 , G03G15/14 , G03G15/16 , G03G21/00
CPC分类号： G03G15/1675 , G03G15/1615 , G03G15/1685 , G03G2215/1623 , G03G2215/1661
摘要： An image transferring device incorporated in an image forming apparatus and capable of surely preventing a sheet from wrapping around a photoconductive element. The image transferring device includes a transfer belt contacting an image bearing member to form a nip portion and which is supported by rollers one which is made from insulating material. A contact electrode contacts the inner surface of the belt and is located downstream of the nip for applying a transfer bias to the belt. A power source is connected to the contact electrode. A discharge electrode is located downstream of the contact electrode for dissipating transfer charge on the belt. A controller controls the power source such that a relation: I.sub.1 -I.sub.2=I.sub.out is satisfied, where I.sub.1 is the transfer current, I.sub.2 is the feedback current flowing from the discharge electrode and I.sub.out is constant.
摘要翻译：一种图像转印装置，其结合在图像形成装置中并且能够可靠地防止片材缠绕在光电导元件周围。图像转印装置包括与图像承载部件接触以形成夹持部分并由由绝缘材料制成的辊支撑的转印带。接触电极接触带的内表面并且位于辊隙的下游，用于向带施加转印偏压。电源连接到接触电极。放电电极位于接触电极的下游，用于消散带上的转移电荷。控制器控制电源，使得满足以下关系：I1-I2 = Iout，其中I1是转移电流，I2是从放电电极流出的反馈电流，Iout是恒定的。

7. 发明授权

US5659843A Image transferring device for image forming equipment 失效
标题翻译：图像形成设备图像传送装置
公开(公告)号：US5659843A
公开(公告)日：1997-08-19
申请号：US398790
申请日：1995-03-06
申请人： Satoshi Takano , Itaru Matsuda , Yuko Harasawa , Hitoshi Ishibashi , Masumi Sato , Megumi Otoshi
发明人： Satoshi Takano , Itaru Matsuda , Yuko Harasawa , Hitoshi Ishibashi , Masumi Sato , Megumi Otoshi
IPC分类号： G03G15/16 , G03G15/20
CPC分类号： G03G15/1675 , G03G2215/1623 , G03G2215/1661
摘要： An image transferring device for image forming equipment and capable of insuring desirable image transfer by obviating premature image transfer, print, and the leak of transfer bias. A belt causes a toner image to be transferred from an image carrier to a transfer medium while conveying it. A bias member applies a charge to the belt. A feedback current from the belt flows through a feedback electrode. A constant current control device executes constant current control such that the difference between a current to flow from the bias member to the belt and the feedback current to flow from the belt to the feedback electrode remains constant. The constant current control is based on PWM having a spatial frequency of either lower than 0.5 cycles/mm or higher than 1.5 cycles/mm. In addition, a current sensing resistor is disposed between a first and second node wherein the first node is connected to a power source for applying current to the bias member and the feedback electrode and the second node is connected to the image carrier.
摘要翻译：一种用于图像形成设备的图像传送装置，并且能够通过避免过早的图像传送，打印和传送偏压的泄漏来确保期望的图像传送。皮带使得调色剂图像在传送的同时从图像载体转印到转印介质上。偏置构件向带施加电荷。来自带的反馈电流流过反馈电极。恒流控制装置执行恒定电流控制，使得从偏压构件到带的流动的电流和从带到反馈电极的反馈电流之间的差保持恒定。恒定电流控制基于具有小于0.5个循环/ mm或高于1.5个循环/ mm的空间频率的PWM。此外，电流感测电阻器设置在第一和第二节点之间，其中第一节点连接到用于向偏置构件施加电流的电源，并且反馈电极和第二节点连接到图像载体。

8. 发明授权

US5978617A Image transferring device for image forming equipment 有权
标题翻译：图像形成设备图像传送装置
公开(公告)号：US5978617A
公开(公告)日：1999-11-02
申请号：US184896
申请日：1998-11-03
申请人： Satoshi Takano , Itaru Matsuda , Yuko Harasawa
发明人： Satoshi Takano , Itaru Matsuda , Yuko Harasawa
IPC分类号： B41J29/46 , G03G15/00 , G03G15/14 , G03G15/16 , G03G21/00 , G03G15/10
CPC分类号： G03G15/1675 , G03G15/1615 , G03G15/1685 , G03G2215/1623 , G03G2215/1661
摘要： An image transferring device incorporated in an image forming apparatus and capable of surely preventing a sheet from wrapping around a photoconductive element. The image transferring device includes a transfer belt contacting an image bearing member to form a nip portion and which is supported by first and second rollers. A contact electrode connected to a power source contacts the inner surface of the belt and is located downstream of the nip for applying a transfer bias to the belt. A discharge electrode is located downstream of the contact electrode and separate from the first and second rollers for dissipating transfer charge on the belt. A controller controls the power source such that a relation: I.sub.1 -I.sub.2 =I.sub.out is satisfied, where I.sub.1 is the transfer current, 1.sub.2 is the feedback current flowing from the discharge electrode and I.sub.out is constant.
摘要翻译：一种图像转印装置，其结合在图像形成装置中并且能够可靠地防止片材缠绕在光电导元件周围。图像转印装置包括与图像承载部件接触以形成夹持部分并由第一和第二辊支撑的转印带。连接到电源的接触电极接触带的内表面并且位于辊隙的下游，用于向带施加转印偏压。放电电极位于接触电极的下游，并与第一和第二辊分离，以消散带上的转移电荷。控制器控制电源，使得满足以下关系：I1-I2 = Iout，其中I1是转移电流，12是从放电电极流出的反馈电流，Iout是恒定的。

9. 发明授权

US5631725A Image transfer device for an image forming apparatus 失效
标题翻译：用于图像形成装置的图像转印装置
公开(公告)号：US5631725A
公开(公告)日：1997-05-20
申请号：US313897
申请日：1994-09-28
申请人： Yuko Harasawa , Itaru Matsuda , Satoshi Takano , Akio Kutsuwada , Hirokazu Ishii
发明人： Yuko Harasawa , Itaru Matsuda , Satoshi Takano , Akio Kutsuwada , Hirokazu Ishii
IPC分类号： G03G15/00 , G03G15/14 , G03G15/16 , G03G15/36 , G03G21/00
CPC分类号： G03G15/1675 , G03G2215/1623
摘要： In an image transfer device for an image forming equipment, a bias for image transfer is applied from a power source to an endless transfer belt via a bias roller. A current from the Transfer belt is released to ground via a ground electrode. Transfer control means variably controls a current I.sub.1 output from the power source that the difference between the current I.sub.1 and a current I.sub.2 flowing from the power source to the ground via the transfer belt, i,e., I.sub.out =I.sub.1 -1.sub.2 remains at a preselected target current. Setting means sets the target current on the basis of a set condition or conditions.
摘要翻译：在用于图像形成设备的图像转印装置中，通过偏压辊将图像转印偏压从电源施加到环形转印带。来自转印带的电流通过接地电极释放到地面。转移控制装置可变地控制来自电源的电流I1输出，电流I1和经由转印带i，即Iout = I1-12从电源流向地面的电流I2之间的差保持在预选目标电流。设定装置根据设定的条件或条件设定目标电流。

10. 发明授权

US5515146A Apparatus and method for cleaning a belt of an image forming apparatus 失效
标题翻译：用于清洁图像形成装置的带的装置和方法
公开(公告)号：US5515146A
公开(公告)日：1996-05-07
申请号：US429904
申请日：1995-04-27
申请人： Yuko Harasawa , Itaru Matsuta , Satoshi Takano , Hirokazu Ishii
发明人： Yuko Harasawa , Itaru Matsuta , Satoshi Takano , Hirokazu Ishii
IPC分类号： G03G15/16
CPC分类号： G03G15/1675 , G03G2215/1661
摘要： An image forming device incorporated in an image forming apparatus and capable of cleaning a residual toner on a transfer belt. A transfer belt transports a sheet to a nip portion of an image carrier and the transfer belt. A transfer bias current It1 is applied to the transfer belt from a power source, so that a toner image on the image carrier is transferred to the sheet at the nip portion. A cleaning bias current It2 is applied to a cleaning bias roller which is held in contact with the transfer belt so as to transfer the residual toner and paper particles from the transfer belt to the cleaning bias roller. An electric current Ir is returned from the transfer belt to a transfer control board which is also connected to the power source. The transfer control board controls the current It1 to satisfy an equation "(It1+It2)-Ir=IOUT" where IOUT is constant.
摘要翻译：一种图像形成装置，其结合在图像形成装置中并且能够清洁转印带上的残留调色剂。转印带将片材传送到图像载体和转印带的夹持部分。转印偏压电流It1从电源施加到转印带上，使得图像载体上的调色剂图像在辊隙部分转印到纸张上。清洁偏置电流It2被施加到与转印带保持接触的清洁偏压辊，以将残留的调色剂和纸颗粒从转印带传送到清洁偏压辊。电流Ir从转印带返回到也连接到电源的转印控制板。转移控制板控制电流It1以满足IOUT为常数的等式“（It1 + It2）-Ir = IOUT”。

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