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1. 发明授权

US5600431A Image forming apparatus for forming color image with dry developer 失效
标题翻译：用干显影剂形成彩色图像的图像形成装置
公开(公告)号：US5600431A
公开(公告)日：1997-02-04
申请号：US348072
申请日：1994-11-23
申请人： Masami Takeda , Kimio Nakahata , Masuo Yamazaki , Katsuhiko Nishimura , Hiromichi Yamada , Tatsuya Nakamura , Tohru Saitou , Tohru Kosaka , Takashi Shibuya , Yasuo Yoda , Masahide Hirai
发明人： Masami Takeda , Kimio Nakahata , Masuo Yamazaki , Katsuhiko Nishimura , Hiromichi Yamada , Tatsuya Nakamura , Tohru Saitou , Tohru Kosaka , Takashi Shibuya , Yasuo Yoda , Masahide Hirai
IPC分类号： G03G15/09 , G03G9/08 , G03G9/087 , G03G9/097 , G03G15/01 , G03G15/08
CPC分类号： G03G15/0126 , G03G9/0827 , G03G9/08782 , G03G9/09733
摘要： This invention relates to a color image forming apparatus for forming a color image with dry developer, capable of preventing deterioration of image quality, resulting from contamination of optical components by the non-magnetic developer scattered from the developing unit. For this purpose there are provided, along the moving direction of an image bearing member effecting endless movement, charging means, optical means, first developing means utilizing developer containing a magnetic component, second developing means utilizing non-magnetic developer of a color different from that of the developer of the first developing means, and transfer means maintained in contact with or close to the image bearing member for transferring a developed image from the image bearing member to a recording material such as paper. A space containing the second developing means is enclosed by the shape of the first developing means, transfer means and image bearing member.
摘要翻译：本发明涉及一种用干式显影剂形成彩色图像的彩色图像形成装置，其能够防止由从显影单元散射的非磁性显影剂的光学部件的污染导致的图像质量的劣化。为此，沿着图像承载部件的运动方向实现无限循环，充电装置，光学装置，利用含有磁性部件的显影剂的第一显影装置，利用不同于其的颜色的非磁性显影剂的第二显影装置第一显影装置的显影剂和与图像承载部件接触或接近图像承载部件的转印装置，用于将显影图像从图像承载部件转印到诸如纸张的记录材料上。包含第二显影装置的空间被第一显影装置，转印装置和图像承载部件的形状包围。

2. 发明授权

US6047149A Image forming apparatus having a rotatable first developing member, and a fixed second developing member having a housing partially covering the first developing member 失效
标题翻译：具有可旋转的第一显影部件的图像形成装置和具有部分地覆盖第一显影部件的壳体的固定的第二显影部件
公开(公告)号：US6047149A
公开(公告)日：2000-04-04
申请号：US348221
申请日：1994-11-28
申请人： Katsuhiko Nishimura , Kimio Nakahata , Masuo Yamazaki , Masami Takeda , Hiromichi Yamada , Tatsuya Nakamura , Tohru Saitou , Tohru Kosaka , Takashi Shibuya , Yasuo Yoda , Masahide Hirai
发明人： Katsuhiko Nishimura , Kimio Nakahata , Masuo Yamazaki , Masami Takeda , Hiromichi Yamada , Tatsuya Nakamura , Tohru Saitou , Tohru Kosaka , Takashi Shibuya , Yasuo Yoda , Masahide Hirai
IPC分类号： G03G15/00 , G03G15/01 , G03G21/00 , G03G21/16
CPC分类号： G03G15/0126 , G03G2215/0174
摘要： An image forming apparatus including a rotatable developing member having a plurality of developing devices for developing an image bearing member at a first developing station, and a second single developing device arranged upstream of the rotatable developing member for developing the image bearing member exclusively at a second developing station different from the first developing station. The second developing device has a cover portion covering the rotatable developing member, and a portion of the cover portion is disposed at a position spaced apart from a rotation axis of the rotatable developing member by a predetermined length in a horizontal direction away from the image bearing member. The rotatable developing member rotates in an opposite direction with respect to the direction of rotation of the image bearing member to prevent toner from scattering toward the optical system.
摘要翻译：一种图像形成装置，包括具有多个用于在第一显影站显影图像承载部件的显影装置的可旋转显影部件和设置在可转动显影部件上游的第二单一显影装置，用于仅在第二显影步骤发展站不同于第一个发展站。第二显影装置具有覆盖可旋转显影构件的盖部分，并且盖部分的一部分设置在远离可转动显影构件的旋转轴线的距离图像承载的水平方向上预定长度的位置会员。可旋转的显影构件相对于图像承载构件的旋转方向沿相反的方向旋转，以防止调色剂向光学系统散射。

3. 发明授权

US5732310A Image forming apparatus having cleaning device for cleaning intermediate transfer member 失效
标题翻译：具有用于清洁中间转印部件的清洁装置的图像形成装置
公开(公告)号：US5732310A
公开(公告)日：1998-03-24
申请号：US633470
申请日：1996-04-17
申请人： Koichi Hiroshima , Katsuhiko Nishimura , Shinichi Tsukida , Toru Kosaka , Yasuo Yoda
发明人： Koichi Hiroshima , Katsuhiko Nishimura , Shinichi Tsukida , Toru Kosaka , Yasuo Yoda
IPC分类号： G03G15/16
CPC分类号： G03G15/161 , G03G15/1605 , G03G2215/1652
摘要： In an image forming apparatus a toner image is transferred onto a transfer material using an intermediate transfer member. The image forming apparatus has an image bearing member; a toner image forming unit for forming a toner image on the image bearing member; an intermediate transfer member movable along an endless path in contact with the image bearing member; a bias voltage applicator for applying a bias voltage to transfer the toner image from the image bearing member onto the intermediate transfer member at a first transfer position of the intermediate transfer member; and an image transfer device for transferring the toner image from the intermediate transfer member onto the transfer material at a second transfer position of the intermediate transfer member, a residual toner charge for charging residual toner remaining on the intermediate transfer member after image transfer therefrom, to a polarity opposite from a regular polarity of the toner to permit the residual toner to transfer back, simultaneously with a next image transfer at the first transfer position, to the image bearing member when the residual toner passes through the first transfer position.
摘要翻译：在图像形成装置中，使用中间转印部件将调色剂图像转印到转印材料上。图像形成装置具有图像承载部件; 调色剂图像形成单元，用于在图像承载部件上形成调色剂图像; 中间转印部件，其沿着与所述图像承载部件接触的环状路径移动; 偏置电压施加器，用于在中间转印部件的第一转印位置处施加偏置电压以将调色剂图像从图像承载部件转印到中间转印部件上; 以及图像转印装置，用于在中间转印部件的第二转印位置处将调色剂图像从中间转印部件转印到转印材料上，剩余调色剂带电量用于在残留在中间转印部件上的剩余调色剂进行图像转印之后，与调色剂的正常极性相反的极性，以便当剩余调色剂通过第一转印位置时，允许残留调色剂与第一转印位置处的下一次图像转印同时转印回图像承载部件。

4. 发明授权

US5701568A Image forming apparatus having dielectric constant relationship between image bearing member, intermediate transfer member and contact transfer device 失效
标题翻译：在图像承载部件，中间转印部件和接触转印装置之间具有介电常数关系的图像形成装置
公开(公告)号：US5701568A
公开(公告)日：1997-12-23
申请号：US705822
申请日：1996-08-30
申请人： Koichi Hiroshima , Katsuhiko Nishimura , Toru Kosaka , Yasuo Yoda
发明人： Koichi Hiroshima , Katsuhiko Nishimura , Toru Kosaka , Yasuo Yoda
IPC分类号： G03G15/01 , G03G15/16
CPC分类号： G03G15/0131 , G03G15/162 , G03G2215/0177
摘要： An image forming apparatus includes a first image-bearing member such as an electrophotographic photosensitive member, an intermediate transfer member for receiving a transferable image formed on the first image-bearing member, and contact transfer device for transferring the transferable image from the intermediate transfer member to a transfer material. The first image-bearing member has a surface layer having a dielectric constant .epsilon..sub.d, the intermediate transfer member has a surface layer having a dielectric constant .epsilon..sub.ITD and the contact transfer device has a surface layer having a dielectric constant .epsilon..sub.tr satisfying a relationship of; .epsilon..sub.d .ltoreq..epsilon..sub.ITD .ltoreq..epsilon..sub.tr. The intermediate transfer member exhibits a volume resistivity of 10.sup.6 -10.sup.10 ohm.cm (at an applied voltage of 1 kV), and the contact transfer device exhibits a volume resistivity of 10.sup.8 -10.sup.15 ohm.cm (at an applied voltage of 1 kV). As a result, it is possible to obtain high transfer efficiencies in both primary and secondary transfer over a wide transfer bias application range.
摘要翻译：图像形成装置包括第一图像承载构件，例如电子照相感光构件，用于接收形成在第一图像承载构件上的可转印图像的中间转印构件和用于从中间转印构件转印可转印图像的接触转印装置转移材料。第一图像承载构件具有介电常数εd的表面层，中间转印构件具有介电常数εITD的表面层，并且接触转移装置具有满足关系的介电常数εtr的表面层 ; epsilon d = 中间转印部件的体积电阻率为106-1010欧姆·厘米（施加电压为1千伏），接触转移装置的体积电阻率为108-1015欧姆·厘米（施加电压为1千伏）。结果，可以在宽的转印偏压施加范围内在一次和二次转印中获得高转印效率。

5. 发明授权

US5809373A Image forming apparatus which back-transfers residual toner from an intermediate transfer member to a photosensitive drum 失效
标题翻译：图像形成装置将残留调色剂从中间转印部件反向转印到感光鼓上
公开(公告)号：US5809373A
公开(公告)日：1998-09-15
申请号：US651858
申请日：1996-05-21
申请人： Yasuo Yoda , Katsuhiko Nishimura , Koichi Hiroshima , Shinichi Tsukida , Toru Kosaka
发明人： Yasuo Yoda , Katsuhiko Nishimura , Koichi Hiroshima , Shinichi Tsukida , Toru Kosaka
IPC分类号： G03G15/16
CPC分类号： G03G15/161 , G03G15/1605 , G03G2215/1652
摘要： An image forming apparatus has an image bearing member; toner image forming unit for forming a toner image with non-magnetic toner on an image bearing member; intermediate transfer member contactable to the image bearing member and movable along an endless path; primary transfer unit for effecting primary image transfer of the toner image formed on the image bearing member onto the intermediate transfer member at a first transfer position; secondary transfer unit for effecting a secondary image transfer of the toner image from the intermediate transfer member on the transfer material at a second transfer position; and a residual toner charger for charging the residual toner remaining on the intermediate transfer member to a polarity opposite from a regular polarity thereof. After the secondary image transfer, the residual toner remaining on the intermediate transfer member is charged by the residual toner charger to the opposite polarity, and is then passed through the first transfer position during the primary image transfer, so that the residual toner is transferred back to the image bearing member substantially simultaneously with a next primary image transfer, thus removing the residual toner from the intermediate transfer member.
摘要翻译：图像形成装置具有图像承载部件; 调色剂图像形成单元，用于在图像承载部件上形成具有非磁性调色剂的调色剂图像; 中间转印部件，其能够与图像承载部件接触并沿着环形路径移动; 一次转印单元，用于在第一转印位置处将形成在图像承载部件上的调色剂图像初次转印到中间转印部件上; 二次转印单元，用于在第二转印位置进行从转印材料上的中间转印部件的调色剂图像的二次图像转印; 以及剩余调色剂充电器，用于将残留在中间转印部件上的剩余调色剂充电到与其正常极性相反的极性。在二次图像转印之后，残留在中间转印部件上的剩余调色剂由剩余调色剂充电器充电至相反极性，然后在主图像转印期间通过第一转印位置，从而将残留调色剂转印回在下一次图像转印的同时基本上与图像承载部件相接触，从而从中间转印部件去除残留的调色剂。

6. 发明授权

US06314264B1 Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：US06314264B1
公开(公告)日：2001-11-06
申请号：US09492334
申请日：2000-01-27
申请人： Kenichi Iida , Yasuo Yoda , Tomoaki Nakai
发明人： Kenichi Iida , Yasuo Yoda , Tomoaki Nakai
IPC分类号： G03G1516
CPC分类号： G03G15/0131 , G03G2215/0119
摘要： An image forming apparatus includes a plurality of image bearing members for bearing images; and an intermediate transfer member onto which a plurality of images on the plurality of image bearing members is sequentially transferred electrostatically at a plurality of transfer positions, the plurality of images on the intermediate transfer member is transferred onto a recording material, wherein a relationship of &tgr;≦T is satisfied in which T (second) is a time taken in order for the intermediate transfer member to move from one transfer position to an adjacent transfer position when a plurality of images is transferred from the plurality of image bearing members onto the intermediate transfer member, and &tgr; (second) is a charge relaxation time of the intermediate transfer member.
摘要翻译：图像形成装置包括用于承载图像的多个图像承载部件; 以及中间转印部件，多个图像承载部件上的多个图像在多个转印位置上静电地依次转印在该中间转印部件上，将中间转印部件上的多个图像转印到记录材料上，其中， ; <= T，其中T（秒）是当多个图像从多个图像承载部件传送到上述传送位置时，中间传送部件从一个传送位置移动到相邻传送位置所花费的时间中间转印元件（第二）是中间转印部件的电荷弛豫时间。

7. 发明申请

US20130343788A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20130343788A1
公开(公告)日：2013-12-26
申请号：US13825620
申请日：2011-11-18
申请人： Yasunari Kobaru , Yasuo Yoda , Takahiro Uchiyama , Yoshiki Kudo , Takeshi Kawamura , Tatsuaki Orihara , Naoto Tsuchihashi , Hidetoshi Hanamoto
发明人： Yasunari Kobaru , Yasuo Yoda , Takahiro Uchiyama , Yoshiki Kudo , Takeshi Kawamura , Tatsuaki Orihara , Naoto Tsuchihashi , Hidetoshi Hanamoto
IPC分类号： G03G15/06
CPC分类号： G03G15/065 , G03G15/325
摘要： An image forming apparatus includes a toner carrying member for carrying a toner; an image carrying member, contacting the toner on the toner carrying member, on which a toner image is to be formed with the toner; and an electrode portion provided at an opposing position in which the electrode portion opposes the toner carrying member via the image carrying member interposed therebetween. The toner image is formed on the image carrying member by changing a value of a voltage, on the basis of image information, applied to the electrode portion. The toner carried on the toner carrying member and the image carrying member contact each other in a toner contact area. The toner is moved between the toner carrying member and the image carrying member in a toner movement area by changing the value of the voltage applied to the electrode portion. The toner movement area is present downstream of the toner contact area with respect to a movement direction of the image carrying member.
摘要翻译：图像形成装置包括用于承载调色剂的调色剂承载构件; 图像承载构件，使调色剂承载构件上的调色剂与调色剂形成调色剂图像; 以及设置在相对位置处的电极部分，其中所述电极部分经由所述图像承载部件与所述调色剂承载部件相对。基于施加到电极部分的图像信息，通过改变电压值在图像承载部件上形成调色剂图像。携带在调色剂承载构件上的调色剂和图像承载构件在调色剂接触区域中彼此接触。通过改变施加到电极部分的电压的值，调色剂在调色剂承载构件和图像承载构件之间在调色剂移动区域中移动。调色剂移动区域相对于图像承载构件的移动方向存在于调色剂接触区域的下游。

8. 发明申请

US20130279930A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20130279930A1
公开(公告)日：2013-10-24
申请号：US13823969
申请日：2011-12-09
申请人： Eiji Uekawa , Yasuo Yoda , Yasunari Kobaru , Takahiro Uchiyama
发明人： Eiji Uekawa , Yasuo Yoda , Yasunari Kobaru , Takahiro Uchiyama
IPC分类号： G03G15/06
CPC分类号： G03G15/065 , G03G15/325
摘要： An image forming apparatus includes a toner carrying member for carrying a toner; an image carrying member on which a toner image is formed with the toner; and a plurality of divided electrode portions provided at a position in which the electrode portions oppose the toner carrying member via the image carrying member interposed therebetween. The electrode portions are supplied with a voltage on the basis of image information to move the toner between the toner carrying member and the image carrying member thereby to form the toner image. The electrode portions includes a first electrode portion for forming an image portion and a second electrode portion, adjacent to the first electrode portion, for forming a non-image portion. The image forming apparatus further includes a controller for variably controlling at least one of potential differences |Vp−Vt| and |Vt−V0| depending on the image information, where a potential of the toner carrying member is Vt, a potential of the first electrode portion is Vp and a potential of the second electrode portion is V0.
摘要翻译：图像形成装置包括用于承载调色剂的调色剂承载构件; 图像承载部件，其上用调色剂形成调色剂图像; 以及设置在所述电极部分经由所述图像承载部件与所述调色剂承载部件相对的位置处的多个分开的电极部分。基于图像信息向电极部分提供电压，以便在调色剂承载构件和图像承载构件之间移动调色剂，从而形成调色剂图像。电极部分包括用于形成图像部分的第一电极部分和与第一电极部分相邻的用于形成非图像部分的第二电极部分。图像形成装置还包括用于可变地控制电位差| Vp-Vt |中的至少一个的控制器和| Vt-V0 | 取决于图像信息，调色剂承载部件的电位为Vt，第一电极部分的电位为Vp，第二电极部分的电位为V0。

9. 发明授权

US06947695B2 Image forming apparatus including two image forming members and featuring a dot-shaped image 失效
标题翻译：图像形成装置包括两个图像形成部件，并具有点状图像
公开(公告)号：US06947695B2
公开(公告)日：2005-09-20
申请号：US10661506
申请日：2003-09-15
申请人： Kenichi Iida , Tatsunori Ishiyama , Yasuo Yoda
发明人： Kenichi Iida , Tatsunori Ishiyama , Yasuo Yoda
IPC分类号： G03G15/01 , G03G15/16
CPC分类号： G03G15/0131 , G03G2215/0154 , G03G2215/0177
摘要： The image forming apparatus includes a movable first image bearing member on which a toner image is formed, and a movable second image bearing member which is brought into contact with the first image bearing member and to which the toner image on the first image bearing member is transferred, in which a dot-shaped dot image formed of a toner different from the toner image is formable on the first image bearing member, and in which a distance between dot centers of the dot images is equal to or smaller than a width of a contact part between the first image bearing member and the second image bearing member in a moving direction of the first image bearing member. Consequently, it is possible to steadily suppress an image streak occurrence and to obtain a final image having a high quality in a stable manner.
摘要翻译：图像形成装置包括其上形成有调色剂图像的可移动的第一图像承载部件和与第一图像承载部件接触并且第一图像承载部件上的调色剂图像位于其上的可动第二图像承载部件转印，其中由不同于调色剂图像的调色剂形成的点状点图像可形成在第一图像承载部件上，并且其中点图像的点中心之间的距离等于或小于在第一图像承载部件和第二图像承载部件之间的第一图像承载部件的移动方向上的接触部分。因此，可以稳定地抑制图像条纹发生，并且以稳定的方式获得具有高质量的最终图像。

10. 发明授权

US06834177B2 Image forming apparatus having transfer roller forming a nip with image bearing belt and regulating member for same 有权
标题翻译：图像形成装置具有转印辊，其形成带有图像承载带的辊隙和用于其的调节构件
公开(公告)号：US06834177B2
公开(公告)日：2004-12-21
申请号：US10229073
申请日：2002-08-28
申请人： Hisahiro Saito , Yasuo Yoda , Kenichi Iida
发明人： Hisahiro Saito , Yasuo Yoda , Kenichi Iida
IPC分类号： G03G1516
CPC分类号： G03G15/167 , G03G2215/0119
摘要： An image forming apparatus includes an image bearing belt; a supporting roller for supporting the image bearing belt; a transfer roller for forming a nip with the image bearing belt, wherein an image is transferred from the image bearing belt onto a transfer material at the nip by applying a voltage to set transfer roller; wherein the nip has a first nip portion where the transfer roller is contacted to the image bearing belt without being backed up by the supporting roller, and a second nip portion where the transfer roller is contacted to set image bearing belt by being backed up by the supporting roller, the first nip portion being upstream of the second nip portion; and a regulating member for regulating a discharging the direction of the transfer material to be discharged from the nip.
摘要翻译：图像形成装置包括图像承载带; 用于支撑图像承载带的支撑辊; 用于与图像承载带形成辊隙的转印辊，其中图像通过施加电压来设置转印辊从图像承载带转印到转印材料上; 其中所述辊隙具有第一夹持部分，其中所述转印辊与所述图像承载带接触而不被所述支撑辊支撑;以及第二夹持部，其中所述转印辊被接触以通过所述支撑辊支撑而设置图像承载带所述第一夹持部位于所述第二夹持部的上游; 以及用于调节从辊隙排出转印材料的方向的调节构件。

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