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1. 发明授权

US06806011B2 Dry toner for electrophotography, and its production process 失效
公开(公告)号：US06806011B2
公开(公告)日：2004-10-19
申请号：US10716434
申请日：2003-11-20
申请人： Takashi Teshima , Masaki Kato , Takatomo Fukumoto
发明人： Takashi Teshima , Masaki Kato , Takatomo Fukumoto
IPC分类号： G03G900
CPC分类号： G03G9/09342 , G03G9/08 , G03G9/09314 , G03G9/09335 , G03G9/09392 , G03G9/097
摘要： The present invention provides an electrophotographic dry toner comprising colored resin particles with releasing agent particles dispersed in a binder resin or an electrophotographic dry toner wherein a resin coating layer obtained by the fixation and fusion of encapsulating resin particles is provided on the surface of colored resin particles with releasing agent particles dispersed in a binder. The releasing agent particles dispersed in each colored resin particle have a particle diameter distribution such that the particle diameter of releasing agent particles dispersed in the vicinity of the surface of each colored resin particle is larger than the particle diameter of releasing agent particles at a central site of the colored resin particle. Alternatively, the colored resin particle is coated with the releasing coating layer with a releasing agent layer interposed between them. The electrophotographic dry toner is improved in terms of offset resistance on fixation and durability with no contamination due to filming of process members such as photosensitive materials and developers. The invention also provides a process for the production of a color toner improved in terms of transparency with a reduced amount of free fine powders.

2. 发明授权

US06686112B2 Electrophotographing dry-type toner and production method therefor 失效
标题翻译：电子照相干式调色剂及其制备方法
公开(公告)号：US06686112B2
公开(公告)日：2004-02-03
申请号：US09959952
申请日：2001-11-13
申请人： Takashi Teshima , Masaki Kato , Takatomo Fukumoto
发明人： Takashi Teshima , Masaki Kato , Takatomo Fukumoto
IPC分类号： G03G908
CPC分类号： G03G9/09342 , G03G9/08 , G03G9/09314 , G03G9/09335 , G03G9/09392 , G03G9/097
摘要： The present invention provides an electrophotographic dry toner comprising colored resin particles with releasing agent particles dispersed in a binder resin or an electrophotographic dry toner wherein a resin coating layer obtained by the fixation and fusion of encapsulating resin particles is provided on the surface of colored resin particles with releasing agent particles dispersed in a binder. The releasing agent particles dispersed in each colored resin particle have a particle diameter distribution such that the particle diameter of releasing agent particles dispersed in the vicinity of the surface of each colored resin particle is larger than the particle diameter of releasing agent particles at a central site of the colored resin particle. Alternatively, the colored resin particle is coated with the releasing coating layer with a releasing agent layer interposed between them. The electrophotographic dry toner is improved in terms of offset resistance on fixation and durability with no contamination due to filming of process members such as photosensitive materials and developers. The invention also provides a process for the production of a color toner improved in terms of transparency with a reduced amount of free fine powders.
摘要翻译：本发明提供了一种电子照相干调色剂，其包含着色树脂颗粒与分散在粘合剂树脂中的脱模剂颗粒或电子照相干调色剂，其中通过胶粘树脂颗粒的固定和熔融获得的树脂涂层被提供在着色树脂颗粒的表面上脱模剂颗粒分散在粘合剂中。分散在每个着色树脂颗粒中的脱模剂颗粒具有使分散在每个着色树脂颗粒表面附近的脱模剂颗粒的粒径大于中心部位的脱模剂颗粒的粒径的粒径分布的着色树脂颗粒。或者，着色树脂颗粒用剥离剂层涂覆有释放剂层，介于它们之间。电子照相干调色剂在固定和耐久性方面的抗偏移性方面得到改善，而由于诸如感光材料和显影剂的处理构件的成膜而没有污染。本发明还提供了一种生产彩色调色剂的方法，该方法在透明度方面具有改善的量，其中游离细粉末的量减少。

3. 发明授权

US5168027A Carrier of developer, process for preparation thereof, and developing method using same 失效
标题翻译：开发商承运人，其准备过程和使用相同的开发方法
公开(公告)号：US5168027A
公开(公告)日：1992-12-01
申请号：US599826
申请日：1990-10-19
申请人： Kyouya Taguchi , Takashi Teshima , Kazuhiko Yamamura , Takatomo Fukumoto
发明人： Kyouya Taguchi , Takashi Teshima , Kazuhiko Yamamura , Takatomo Fukumoto
IPC分类号： G03G9/097 , G03G9/10 , G03G9/107 , G03G9/113
CPC分类号： G03G9/107 , G03G9/10 , G03G9/1132
摘要： Disclosed is a carrier of a developer, which is characterized in that the current value observed when a direct current is applied under a voltage of 200 V is 0.8 to 2.0 .mu.A and the relaxation time is in the range of from 4.0 to 6.0 milliseconds, that is, the characteristic values in the dynamic state, for example, in a developing apparatus, are kept with certain ranges. If this developer carrier is used, an image having a high quality can be obtained without occurrence of troubles often caused in conventional developers, such as carrier dragging (transfer of the carrier to a photosensitive material together with the toner), fogging (transfer of the toner to the background of a copying sheet) and letter thinning.

4. 发明授权

US5310617A Magnetic brush developing process and developer 失效
标题翻译：磁刷开发过程和开发者
公开(公告)号：US5310617A
公开(公告)日：1994-05-10
申请号：US593885
申请日：1990-10-05
申请人： Kyouya Taguchi , Takashi Teshima , Kazuhiko Yamamura , Takatomo Fukumoto
发明人： Kyouya Taguchi , Takashi Teshima , Kazuhiko Yamamura , Takatomo Fukumoto
IPC分类号： G03G9/10 , G03G13/09 , G03G9/107
CPC分类号： G03G9/10
摘要： Disclosed are a two-component type developer which is supplied to an area where a bias voltage of at least 250 V is applied, and a developing process using this developer. In this developer, by adjusting the particle size distribution of carrier particles within a specific range, occurrence of the so-called carrier dragging phenomenon of the transfer of the carrier together with the toner to a photosensitive material can be prevented. This adjustment of the particle size distribution is such that the content of carrier particles having a size smaller than 250 mesh is less than 8% by weight based on the entire carrier particles, the diameter D.sub.50 of the weight average particle size corresponding to 50% of the weight of the entire carrier particles is in the range of from 80 to 120 .mu.m and the difference between D.sub.25 and D.sub.75 is in the range of from 5 to 20 .mu.m.
摘要翻译：公开了一种双组分型显影剂，其被供应到施加至少250V的偏置电压的区域和使用该显影剂的显影处理。在这种显影剂中，通过调整载体颗粒在特定范围内的粒度分布，可以防止载体与调色剂一起转印到感光材料上的所谓载体拖曳现象。这种粒度分布的调节使得尺寸小于250目的载体颗粒的含量基于载体颗粒的总和小于8重量％，重均粒径的直径D50对应于50重量％整个载体颗粒的重量在80至120μm的范围内，D25和D75之间的差在5至20μm的范围内。

5. 发明授权

US5258253A Magnetic carrier for electronic reproduction coated with a nitrogen containing silicone resin 失效
标题翻译：用含氮硅树脂涂覆的电子复制用磁性载体
公开(公告)号：US5258253A
公开(公告)日：1993-11-02
申请号：US838325
申请日：1992-02-20
申请人： Takatomo Fukumoto , Takashi Teshima , Kazuhiko Yamamura , Kyouya Taguchi , Hiroyuki Hazama , Takeshi Higuchi , Koji Honda
发明人： Takatomo Fukumoto , Takashi Teshima , Kazuhiko Yamamura , Kyouya Taguchi , Hiroyuki Hazama , Takeshi Higuchi , Koji Honda
IPC分类号： G03G9/08 , G03G9/113 , G03G9/083
CPC分类号： G03G9/1136 , G03G9/0823
摘要： Disclosed is a two-component type developer comprising a toner and a coated magnetic carrier wherein said toner has an electroconductivity lower than 3.5.times.10.sup.-10 S/cm and the coating of said magnetic carrier consists of a silicone resin having as its component unit a basic nitrogen atom-containing organic group bonded to a silicone atom (N-containing silicone resin).Such developer is capable of forming images having a high image density and a high image quality, particularly as a white developer or a color developer if developing is carried out even under ordinary conditions, since the toner has its charge quantity maintained in an appropriate range in the developing step.
摘要翻译：公开了一种双组分型显影剂，其包含调色剂和涂覆的磁性载体，其中所述调色剂具有低于3.5×10 -10 S / cm的导电性，并且所述磁性载体的涂层由有机硅树脂组成，所述硅树脂的组分单元为碱性与含硅原子结合的含氮原子的有机基团（含N的有机硅树脂）。这样的显影剂能够形成具有高图像密度和高图像质量的图像，特别是作为白色显影剂或彩色显影剂，即使在普通条件下进行显影，因为调色剂的电荷量保持在适当的范围内开发步骤。

6. 发明授权

US08401443B2 Toner-particle bearing roller, developing device, and image forming apparatus 有权
标题翻译：调色剂承载辊，显影装置和图像形成装置
公开(公告)号：US08401443B2
公开(公告)日：2013-03-19
申请号：US13271140
申请日：2011-10-11
申请人： Yoichi Yamada , Tomohiro Aruga , Noboru Sakurai , Katsumi Okamoto , Hiroshi Kato , Masanao Kunugi , Takatomo Fukumoto
发明人： Yoichi Yamada , Tomohiro Aruga , Noboru Sakurai , Katsumi Okamoto , Hiroshi Kato , Masanao Kunugi , Takatomo Fukumoto
IPC分类号： G03G15/08
CPC分类号： G03G15/0818 , G03G2215/0634
摘要： A developing device includes a toner particle-bearing roller that bears toner particles on its surface and develops a latent image borne by an image-bearing member with those toner particles, the toner particle-bearing roller has a projection portion disposed on its surface, the projection portion having a top surface having a flat portion, and a width of the top surface being equal to or more than a volume average particle diameter of the toner particles.
摘要翻译：显影装置包括：调色剂颗粒承载辊，其表面上带有调色剂颗粒，并且通过这些调色剂颗粒显影由图像承载部件承载的潜像，调色剂颗粒承载辊具有设置在其表面上的突出部分，突起部分具有平坦部分的顶表面，并且顶表面的宽度等于或大于调色剂颗粒的体积平均粒径。

7. 发明授权

US08086152B2 Developing device, image forming apparatus, image forming system, developing method, and toner bearing member 有权
标题翻译：显影装置，图像形成装置，图像形成系统，显影方法和调色剂承载部件
公开(公告)号：US08086152B2
公开(公告)日：2011-12-27
申请号：US12124939
申请日：2008-05-21
申请人： Yoichi Yamada , Takatomo Fukumoto
发明人： Yoichi Yamada , Takatomo Fukumoto
IPC分类号： G03G15/08
CPC分类号： G03G15/0818
摘要： The present invention provides a developing device that includes a toner bearing member that includes regularly arranged projection sections and depressed sections for bearing toner, and that develops a latent image borne on an image bearing member with the toner borne on the projection sections and the depressed sections, wherein the latent image is developed in a state in which a projection section covering ratio at which toner contacting the projection sections covers the projection sections is smaller than a depressed section covering ratio at which toner contacting the depressed sections covers the depressed sections.
摘要翻译：本发明提供了一种显影装置，其包括调色剂承载部件，该调色剂承载部件包括规则地布置的突出部分和用于承载调色剂的凹陷部分，并且在承载在图像承载部件上的潜像显影，所述调色剂承载在突出部分和凹陷部分上其中，所述潜像以与所述突出部分接触的调色剂覆盖所述突出部分的突出部分覆盖率小于所述凹陷部分接触所述凹陷部分的调色剂覆盖所述凹陷部分的凹陷部覆盖率的状态显影。

8. 发明授权

US08081911B2 Development roller, development device, and image forming apparatus 失效
标题翻译：显影辊，显影装置和成像装置
公开(公告)号：US08081911B2
公开(公告)日：2011-12-20
申请号：US12388857
申请日：2009-02-19
申请人： Yoichi Yamada , Masahiro Maeda , Junichi Suzuki , Takatomo Fukumoto
发明人： Yoichi Yamada , Masahiro Maeda , Junichi Suzuki , Takatomo Fukumoto
IPC分类号： G03G15/08
CPC分类号： G03G15/0818
摘要： A development roller includes a base unit having a base recess and a base projection formed in a predetermined area of a circumference surface of the base unit, and a surface layer formed on the circumference surface of the base unit and having a recess and a projection formed respectively in accordance with the base recess and the base projection of the base unit.
摘要翻译：显影辊包括：基座单元，具有形成在基座单元的圆周表面的预定区域中的基部凹部和基部突起;以及基底单元的圆周表面上形成的凹部和突起，分别根据基部凹部和基部单元的基底突起。

9. 发明授权

US07609993B2 Image forming apparatus that prevents developer from spilling 失效
标题翻译：防止显影剂溢出的图像形成装置
公开(公告)号：US07609993B2
公开(公告)日：2009-10-27
申请号：US11537917
申请日：2006-10-02
申请人： Masahiro Maeda , Yoichi Yamada , Mamoru Mizunokura , Takatomo Fukumoto , Fuyuto Yamashita
发明人： Masahiro Maeda , Yoichi Yamada , Mamoru Mizunokura , Takatomo Fukumoto , Fuyuto Yamashita
IPC分类号： G03G15/16 , G03G21/00
CPC分类号： G03G15/161 , G03G21/12 , G03G2215/1661 , G03G2221/1627
摘要： An image forming apparatus, includes: a developer moving element that moves developer in order to transfer the developer onto a medium by rotating with the developer being borne on the developer moving element; and a collector for collecting the developer that has not been transferred onto the medium and remains on the developer moving element, the collector having a scraper blade that can abut against and separate from the developer moving element and that is for scraping off the developer on the developer moving element by abutting against the developer moving element, a sealing member that can contact with and separate from the developer moving element and that is for preventing, by contacting the developer moving element, the developer from spilling outside the collector, a ventilation opening for moving air in the collector outside the collector, and a valve for adjusting an amount of air passing through the ventilation opening, and the collector being made such that when either one of the scraper blade and the sealing member, whichever separates earlier from the developer moving element, starts separating therefrom, air can pass through the ventilation opening.
摘要翻译：一种图像形成装置，包括：显影剂移动元件，其移动显影剂以便通过与显影剂承载在显影剂移动元件上的转动而将显影剂转印到介质上; 以及收集器，用于收集尚未转印到介质上并保留在显影剂移动元件上的显影剂，该收集器具有可与显影剂移动元件抵接并与显影剂移动元件分离的刮板，并且用于刮除显影剂移动元件上的显影剂显影剂移动元件通过抵靠显影剂移动元件，与显影剂移动元件接触并与显影剂移动元件分离的密封元件，并且用于通过使显影剂移动元件接触显影剂而不会溢出集电器外部的通风开口，在收集器外部的收集器中移动空气，以及用于调节通过通气开口的空气量的阀，并且收集器被制成使得当刮板和密封构件中的任一个与显影剂移动元件开始分离，空气可以通过通风口。

10. 发明授权

US08170454B2 Image forming apparatus and image forming method 有权
标题翻译：图像形成装置及图像形成方法
公开(公告)号：US08170454B2
公开(公告)日：2012-05-01
申请号：US12511848
申请日：2009-07-29
申请人： Yoichi Yamada , Daisuke Matsumoto , Takatomo Fukumoto
发明人： Yoichi Yamada , Daisuke Matsumoto , Takatomo Fukumoto
IPC分类号： G03G15/08
CPC分类号： G03G15/0813 , G03G2215/0619
摘要： An image forming apparatus includes: a latent image holder that holds on its surface an electrostatic latent image in which an image portion and a non-image portion have different potentials; a toner carrying roller that carries a toner layer including both contact toner which directly contacts a surface of the roller and non-contact toner which contacts the contact toner but does not contact the surface of the roller; and an electric field forming unit that forms an alternating electric field to cause an electric field strength exerted between the non-image portion on the surface of the latent image holder and the surface of the toner carrying roller to be lower than a contact toner fly start electric field strength and higher than a non-contact toner fly start electric field strength, between the latent image holder and the toner carrying roller, as a toner fly electric field.
摘要翻译：图像形成装置包括：潜像保持器，其在其表面上保持图像部分和非图像部分具有不同电位的静电潜像; 携带调色剂层的调色剂承载辊，其包括直接接触辊表面的接触调色剂和与接触调色剂接触但不接触辊的表面的非接触式调色剂; 以及电场形成单元，其形成交变电场以使施加在潜像保持器的表面上的非图像部分和调色剂承载辊的表面之间的电场强度低于接触式调色剂起始点作为调色剂飞电场，在潜像保持器和调色剂承载辊之间，电场强度高于非接触式调色剂起飞电场强度。

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