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1. 发明授权

US4916547A Color image forming apparatus 失效
标题翻译：彩色图像形成装置
公开(公告)号：US4916547A
公开(公告)日：1990-04-10
申请号：US198855
申请日：1988-05-26
申请人： Akio Katsumata , Mitsuo Hasebe , Yoshihiro Mitekura , Hiroshi Hosaka , Itaru Matsuda , Kotaro Yonenaga , Takayuki Maruta , Masaaki Kogure
发明人： Akio Katsumata , Mitsuo Hasebe , Yoshihiro Mitekura , Hiroshi Hosaka , Itaru Matsuda , Kotaro Yonenaga , Takayuki Maruta , Masaaki Kogure
IPC分类号： G03G15/01 , G03G15/16 , H04N1/50
CPC分类号： H04N1/506 , G03G15/0194 , G03G2215/0119 , G03G2215/0161
摘要： An image forming apparatus of the type producing a single composite color image on a paper which is transported by a belt by transferring image components of different colors to the paper in register with each other. The apparatus reduces with a simple construction the positional deviation of the image components which occurs in an intended direction of paper transport. Recording devices individually adapted for black, cyan, magenta and yellow are arranged side by side. Pattern images for measurement each being associated with a respective one of those colors are formed on the belt. A timing at which each of the pattern images arrives is sensed and counted. The count is compared with a reference value to calculate an amount of deviation. Write start timing signals each being associated with a particular color are generated which are individually variable on the basis of the deviation calculated. The pattern images of the respective colors are each generated by using a write start timing associated with the color as a reference, and the pattern to be provided by any of the recording devices is outputted on a downstream side of the belt relative to the pattern to be provided by another recording device which is located downstream of the first-mentioned recording device.
摘要翻译：一种在纸张上产生单一复合彩色图像的图像形成装置，其通过将不同颜色的图像分量传送到纸张而被传送的纸张彼此对准。该装置以简单的结构减少了在纸张传送的预期方向上发生的图像分量的位置偏差。分别适用于黑色，青色，品红色和黄色的记录装置并排布置。在带上形成有与这些颜色中的相应颜色相关联的用于测量的图案图像。每个图案图像到达的定时被感测和计数。将计数与参考值进行比较以计算偏差量。生成与特定颜色相关联的写入开始定时信号，其基于计算的偏差而单独变化。各颜色的图案图像各自通过使用与颜色相关联的写入开始定时作为基准来生成，并且由任何记录装置提供的图案相对于图案在带的下游侧输出到由位于第一记录装置下游的另一记录装置提供。

2. 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。

3. 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。

4. 发明授权

US07184678B2 Image forming apparatus with improved separatability of transfer material 有权
标题翻译：具有改善转印材料分离性能的成像装置
公开(公告)号：US07184678B2
公开(公告)日：2007-02-27
申请号：US11013877
申请日：2004-12-17
申请人： Hirokazu Ishii , Satoshi Takano , Hiroshi Saitoh , Ryoh Tanoue , Itaru Matsuda , Yuji Suzuki , Eiji Shimojo , Noboru Onodera , Hidenori Nihei
发明人： Hirokazu Ishii , Satoshi Takano , Hiroshi Saitoh , Ryoh Tanoue , Itaru Matsuda , Yuji Suzuki , Eiji Shimojo , Noboru Onodera , Hidenori Nihei
IPC分类号： G03G15/16
CPC分类号： G03G15/6532 , G03G2215/00599
摘要： An image forming apparatus in which a visible image is transferred to a transfer material includes a pre-transfer exposing unit that makes only a portion of a latent image carrier that corresponds to a leading edge of the transfer material expose, and a transfer-bias applying unit that applies a bias for transferring the visible image. The transfer-bias applying unit starts applying the bias to the transfer material, at least step-by-step, when a predetermined time is passed from a point of time at which the leading edge of the transfer material comes into a contact with the latent image carrier by controlling the pre-transfer exposing unit and a bias applying timing of the transfer-bias applying unit.
摘要翻译：其中将可见光图像转印到转印材料上的图像形成装置包括仅使与转印材料的前沿相对应的潜像载体的一部分露出的预转印曝光单元，以及施加了转印偏压单位适用于传递可见图像的偏差。当从转印材料的前端与潜在的接触的时间点经过预定时间时，转印偏压施加单元至少逐步地向转印材料施加偏压通过控制预转印曝光单元和转印偏压施加单元的偏压施加定时来生成图像载体。

5. 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。

6. 发明授权

US07769310B2 Image forming apparatus with improved separability of transfer material 有权
标题翻译：具有改善转印材料分离性能的成像装置
公开(公告)号：US07769310B2
公开(公告)日：2010-08-03
申请号：US11669747
申请日：2007-01-31
申请人： Hirokazu Ishii , Satoshi Takano , Hiroshi Saitoh , Ryoh Tanoue , Itaru Matsuda , Yuji Suzuki , Eiji Shimojo , Noboru Onodera , Hidenori Nihei
发明人： Hirokazu Ishii , Satoshi Takano , Hiroshi Saitoh , Ryoh Tanoue , Itaru Matsuda , Yuji Suzuki , Eiji Shimojo , Noboru Onodera , Hidenori Nihei
IPC分类号： G03G15/16
CPC分类号： G03G15/6532 , G03G2215/00599
摘要： An image forming apparatus in which a visible image is transferred to a transfer material includes a pre-transfer exposing unit that makes only a portion of a latent image carrier that corresponds to a leading edge of the transfer material expose, and a transfer-bias applying unit that applies a bias for transferring the visible image. The transfer-bias applying unit starts applying the bias to the transfer material, at least step-by-step, when a predetermined time is passed from a point of time at which the leading edge of the transfer material comes into a contact with the latent image carrier by controlling the pre-transfer exposing unit and a bias applying timing of the transfer-bias applying unit.
摘要翻译：其中将可见光图像转印到转印材料上的图像形成装置包括仅使与转印材料的前沿相对应的潜像载体的一部分露出的预转印曝光单元，以及施加了转印偏压单位适用于传递可见图像的偏差。当从转印材料的前端与潜在的接触的时间点经过预定时间时，转印偏压施加单元至少逐步地向转印材料施加偏压通过控制预转印曝光单元和转印偏压施加单元的偏压施加定时来生成图像载体。

7. 发明申请

US20070127941A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20070127941A1
公开(公告)日：2007-06-07
申请号：US11669747
申请日：2007-01-31
申请人： Hirokazu Ishii , Satoshi Takano , Hiroshi Saitoh , Ryoh Tanoue , Itaru Matsuda , Yuji Suzuki , Eiji Shimojo , Noboru Onodera , Hidenori Nihei
发明人： Hirokazu Ishii , Satoshi Takano , Hiroshi Saitoh , Ryoh Tanoue , Itaru Matsuda , Yuji Suzuki , Eiji Shimojo , Noboru Onodera , Hidenori Nihei
IPC分类号： G03G15/16
CPC分类号： G03G15/6532 , G03G2215/00599
摘要： An image forming apparatus in which a visible image is transferred to a transfer material includes a pre-transfer exposing unit that makes only a portion of a latent image carrier that corresponds to a leading edge of the transfer material expose, and a transfer-bias applying unit that applies a bias for transferring the visible image. The transfer-bias applying unit starts applying the bias to the transfer material, at least step-by-step, when a predetermined time is passed from a point of time at which the leading edge of the transfer material comes into a contact with the latent image carrier by controlling the pre-transfer exposing unit and a bias applying timing of the transfer-bias applying unit.
摘要翻译：其中将可见光图像转印到转印材料上的图像形成装置包括仅使与转印材料的前沿相对应的潜像载体的一部分露出的预转印曝光单元，以及施加了转印偏压单位适用于传递可见图像的偏差。当从转印材料的前端与潜在的接触的时间点经过预定时间时，转印偏压施加单元至少逐步地向转印材料施加偏压通过控制预转印曝光单元和转印偏压施加单元的偏压施加定时来生成图像载体。

8. 发明申请

US20050180767A1 Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：US20050180767A1
公开(公告)日：2005-08-18
申请号：US11013877
申请日：2004-12-17
申请人： Hirokazu Ishii , Satoshi Takano , Hiroshi Saitoh , Ryoh Tanoue , Itaru Matsuda , Yuji Suzuki , Eiji Shimojo , Noboru Onodera , Hidenori Nihei
发明人： Hirokazu Ishii , Satoshi Takano , Hiroshi Saitoh , Ryoh Tanoue , Itaru Matsuda , Yuji Suzuki , Eiji Shimojo , Noboru Onodera , Hidenori Nihei
IPC分类号： G03G15/00 , G03G15/16
CPC分类号： G03G15/6532 , G03G2215/00599
摘要： An image forming apparatus in which a visible image is transferred to a transfer material includes a pre-transfer exposing unit that makes only a portion of a latent image carrier that corresponds to a leading edge of the transfer material expose, and a transfer-bias applying unit that applies a bias for transferring the visible image. The transfer-bias applying unit starts applying the bias to the transfer material, at least step-by-step, when a predetermined time is passed from a point of time at which the leading edge of the transfer material comes into a contact with the latent image carrier by controlling the pre-transfer exposing unit and a bias applying timing of the transfer-bias applying unit.
摘要翻译：其中将可见光图像转印到转印材料上的图像形成装置包括仅使与转印材料的前沿相对应的潜像载体的一部分露出的预转印曝光单元，以及施加了转印偏压单位适用于传递可见图像的偏差。当从转印材料的前端与潜在的接触的时间点经过预定时间时，转印偏压施加单元至少逐步地向转印材料施加偏压通过控制预转印曝光单元和转印偏压施加单元的偏压施加定时来生成图像载体。

9. 发明授权

US06525753B2 Image forming apparatus having developing device including developing rollers with differing flux density and optical writing device using xonality data of four levels or less 有权
标题翻译：具有显影装置的图像形成装置包括具有不同磁通密度的显影辊和使用四级或更低音调数据的光写入装置
公开(公告)号：US06525753B2
公开(公告)日：2003-02-25
申请号：US09725516
申请日：2000-11-30
申请人： Itaru Matsuda
发明人： Itaru Matsuda
IPC分类号： B41J2385
CPC分类号： G03G15/09 , G03G15/04045 , G03G15/326 , G03G2215/0495
摘要： An image forming apparatus of the present invention includes a developing device including two developing rollers arranged in parallel in a direction in which an image carrier moves each for forming a magnet brush thereon. The magnetic poles of the developing rollers for effecting hand-over of a developer between the rollers are provided with the same polarity. An optical writing device optically writes an image on the image carrier in accordance with tonality data of four levels or less for a single dot. The developing device prevents the developer from moving through a gap between the developing rollers and bringing about irregular image density and background contamination. In addition, the optical writing device successfully obviates ghosts, which are likely to appear when a uniform halftone image including solid portions or bold characters is reproduced.
摘要翻译：本发明的图像形成装置包括显影装置，该显影装置包括沿着图像载体移动的方向平行布置的两个显影辊，用于在其上形成磁刷。用于实现辊之间显影剂切换的显影辊的磁极设置有相同的极性。光写入装置根据单个点的等级或更小的音调数据将图像光学地写入图像载体上。显影装置防止显影剂移动通过显影辊之间的间隙并引起不规则的图像密度和背景污染。此外，光学写入装置成功地避免了当再现包括实心部分或粗体字符的均匀半色调图像时可能出现的重影。

10. 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

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