公开(公告)号：US10036976B2

公开(公告)日：2018-07-31

申请号：US15367514

申请日：2016-12-02

申请人： Yuji Nagatomo ,  Tetsumaru Fujita ,  Masato Tsuji ,  Yutaro Kaku

发明人： Yuji Nagatomo ,  Tetsumaru Fujita ,  Masato Tsuji ,  Yutaro Kaku

IPC分类号： G03G15/08

CPC分类号： G03G15/0812

摘要： A developing device includes a developer bearer facing a latent image bearer, to rotate and supply developer to the latent image bearer, and a developer regulator to regulate an amount of the developer on a surface of the developer bearer. The developer regulator is in contact with the surface of the developer bearer. In the developing device, a ratio of a ten-point mean roughness of the developer regulator to a volume average particle diameter of the developer is not greater than 3.5%. The ratio is defined as Rzjis/Dv×100, where Rzjis represents the ten-point mean roughness measured in a nip-adjacent portion of a face of the developer regulator opposing the developer bearer, and Dv represents the volume average particle diameter of the developer. The nip-adjacent portion is adjacent to and downstream a downstream end of a regulation nip in a rotation direction of the developer bearer.

公开(公告)号：US20100150609A1

公开(公告)日：2010-06-17

申请号：US12622692

申请日：2009-11-20

申请人： Chiyoshi Nozaki ,  Tetsumaru Fujita ,  Shintaro Yamada ,  Yuji Nagatomo ,  Shin Murayama ,  Manabu Hamada ,  Yoshimichi Ishikawa

发明人： Chiyoshi Nozaki ,  Tetsumaru Fujita ,  Shintaro Yamada ,  Yuji Nagatomo ,  Shin Murayama ,  Manabu Hamada ,  Yoshimichi Ishikawa

IPC分类号： G03G15/00 ,  H01B1/02 ,  H01B1/04

CPC分类号： G03G15/0818 ,  G03G15/0233 ,  Y10T428/25

摘要： A semiconductive member including an alkali metal salt having the formula (M)n·X in a surface layer thereof. M represents Na+, K+, or Li+; X represents Cl−, Br−, I−, F−, CH3COO−, CF3COO−, CH(COOH)CHCOO−, (CHCOO−)2, CH2(COOH)CH2COO−, (CH2COO−)2, (HOOC)Ar(COO−), Ar(COO−)2, (HOOC)2Ar(COO−), (HOOC)Ar(COO−)2, Ar(COO−)3, (HOOC)3Ar(COO−), (HOOC)2Ar(COO−)2, (HOOC)Ar (COO−)3, Ar(COO−)4, Ar—SO3−, Ar(SO3−)2, an oligomer or a polymer having an acrylic acid anion unit, or an oligomer or a polymer having an methacrylic acid anion unit; Ar represents a benzene ring, a naphthalene ring, or a biphenyl ring; and n is a numeral equivalent to the anionic valence of X.

摘要翻译： 包含其表面层中具有式（M）n·X的碱金属盐的半导体构件。 M表示Na +，K +或Li +; X代表Cl-，Br-，I-，F-，CH3COO-，CF3COO-，CH（COOH）CHCOO-，（CHCOO-）2，CH2（COOH）CH2COO-，（CH2COO-）2，（HOOC） （COO-）2，（COO-）2，（HOOC）2，（COO-），（HOOC）Ar（COO-）2，Ar（COO-）3，（HOOC） 2Ar（COO-）2，（HOOC）Ar（COO-）3，Ar（COO-）4，Ar-SO3-，Ar（SO3-）2，具有丙烯酸阴离子单元的低聚物或聚合物， 低聚物或具有甲基丙烯酸阴离子单元的聚合物; Ar表示苯环，萘环或联苯环; 和n是等价于X的阴离子价数的数字。

公开(公告)号：US07539442B2

公开(公告)日：2009-05-26

申请号：US11759051

申请日：2007-06-06

申请人： Yuji Nagatomo ,  Tetsumaru Fujita

发明人： Yuji Nagatomo ,  Tetsumaru Fujita

IPC分类号： G03G15/02

CPC分类号： G03G15/0216

摘要： A charging unit available in a process unit detachably attached to an image forming apparatus includes a charging member configured to uniformly charge a surface of an image carrying member while contacting the image carrying member, and a charge bias applying unit configured to apply a charge bias superimposing a direct current voltage on an alternating current voltage to the charging member. The alternating current voltage satisfies a relational expression of “Vpp×0.4/t≦8.8×103”, “Vpp” representing a peak-to-peak voltage of the alternating current voltage in the charge bias, and “t” representing a time period from a first point of a swing of a wave component starting to swing by a large amount to a same polarity as the direct current voltage of the charge bias to a second point of the swing of the wave component reaching approximately 80% of an amplitude of the wave component.

摘要翻译： 可拆卸地附接到图像形成装置的处理单元中的充电单元包括充电构件，其被配置为在与图像承载构件接触的同时对图像承载构件的表面进行均匀充电;以及充电偏压施加单元，被配置为施加电荷偏置叠加 对充电部件的交流电压的直流电压。 交流电压满足表示充电偏压中的交流电压的峰 - 峰电压的“Vppx0.4 / t <= 8.8×103”，“Vpp”的关系式，表示时间段的“t” 从波动分量的摆动的第一点开始大量旋转到与充电偏压的直流电压相同的极性，到波分量的摆动的第二点达到幅度的大约80％ 波分量。

公开(公告)号：US20080227001A1

公开(公告)日：2008-09-18

申请号：US12048689

申请日：2008-03-14

申请人： Takuya KADOTA ,  Chiyoshi Nozaki ,  Tsuyoshi Nozaki ,  Hiroyuki Murakami ,  Mitsuyo Matsumoto ,  Atsushi Yamamoto ,  Tetsumaru Fujita ,  Yuji Nagatomo

发明人： Takuya KADOTA ,  Chiyoshi Nozaki ,  Tsuyoshi Nozaki ,  Hiroyuki Murakami ,  Mitsuyo Matsumoto ,  Atsushi Yamamoto ,  Tetsumaru Fujita ,  Yuji Nagatomo

IPC分类号： G03G13/04 ,  G03G15/00

CPC分类号： G03G21/0058 ,  G03G21/0047 ,  G03G2221/0005

摘要： An image forming method, including recharging untransferred toner remaining on a latent electrostatic image bearing member by using a recharging member to remove the untransferred toner from the latent electrostatic image bearing member, wherein the recharging member is a conductive member a surface of which has a contact angle of 108° or more with pure water and a Shore D hardness of 50 to 65; the coverage of the surface of the toner by an external additive is 150% or less; and a releasing agent peak ratio obtained by ATR method is 0.02 to 0.1.

摘要翻译： 一种图像形成方法，包括通过使用再充电构件对静电潜像承载构件上残留的未转印调色剂进行再充电，以从静电潜像承载构件去除未转印的调色剂，其中所述再充电构件是其表面具有接触的导电构件 角度为108°以上，纯水和肖氏D硬度为50〜65; 通过外部添加剂对调色剂的表面的覆盖率为150％以下; 通过ATR法得到的脱模剂峰比为0.02〜0.1。

公开(公告)号：US07751753B2

公开(公告)日：2010-07-06

申请号：US11954309

申请日：2007-12-12

申请人： Yoshio Sakagawa ,  Tetsumaru Fujita ,  Yuji Nagatomo

发明人： Yoshio Sakagawa ,  Tetsumaru Fujita ,  Yuji Nagatomo

IPC分类号： G03G15/30 ,  G03G15/00

CPC分类号： G03G21/0035 ,  G03G21/0064

摘要： A cleanerless image forming apparatus configured to reduce the density unevenness of halftone images. The apparatus includes a photosensitive member, a charging roller device for uniformly charging the surface of the photosensitive member, an optical writing unit for forming latent images on the surface of the photosensitive member after uniform charging, a developing device for developing the latent toner image on the photosensitive member, a transfer unit for transferring the toner image to an intermediate transfer belt, and a brush member for trapping post-transfer residual toner adhering to the surface of the photosensitive member after passing through the transfer process by the transfer unit and before entering the developing process by the developing device, wherein the post-transfer residual toner is recovered within the developing device after re-transfer of the post-transfer residual toner within the brush member to the surface of the photosensitive member.

摘要翻译： 一种无清洁器的图像形成装置，被配置为减少半色调图像的浓度不均匀性。 该装置包括感光构件，用于均匀地充电感光构件的表面的充电辊装置，用于在均匀充电之后在感光构件的表面上形成潜像的光学书写单元，用于使潜像调色剂图像显影的显影装置 感光构件，用于将调色剂图像转印到中间转印带的转印单元和用于在通过转印单元的转印处理之后并且在进入之前捕获粘附到感光构件的表面上的转印后残留调色剂的刷构件 通过显影装置的显影过程，其中将转印后残留调色剂重新转印到感光构件的表面之前，将转印后残留调色剂回收到显影装置内。

公开(公告)号：US07725054B2

公开(公告)日：2010-05-25

申请号：US11954402

申请日：2007-12-12

申请人： Tetsumaru Fujita ,  Yoshio Sakagawa ,  Yuji Nagatomo

发明人： Tetsumaru Fujita ,  Yoshio Sakagawa ,  Yuji Nagatomo

IPC分类号： G03G15/02 ,  G03G21/00

CPC分类号： G03G15/0233 ,  G03G2215/025

摘要： An electrifying apparatus, a processing unit including the electrifying apparatus, and an image formation apparatus including the electrifying apparatus. The electrifying apparatus includes a conductive sheet for electrifying at least one of a surface of a photoconductor and toner adhered to the surface. The conductive sheet is specified to have a pure-water contact angle equal to or greater than 108 degrees, and to have a shore D hardness equal to or less than 65.

摘要翻译： 带电装置，包括通电装置的处理单元和包括通电装置的图像形成装置。 带电装置包括用于使感光体的表面和粘附到表面的调色剂中的至少一个带电的导电片。 导电片被规定为具有等于或大于108度的纯水接触角，并且具有等于或小于65的肖氏D硬度。

公开(公告)号：US07693459B2

公开(公告)日：2010-04-06

申请号：US11855687

申请日：2007-09-14

申请人： Tetsumaru Fujita ,  Yoshio Sakagawa ,  Yuji Nagatomo

发明人： Tetsumaru Fujita ,  Yoshio Sakagawa ,  Yuji Nagatomo

IPC分类号： G02G15/02 ,  G03G21/10

CPC分类号： G03G15/0233

摘要： A charging device and an image forming apparatus using the charging device. The charging device includes a charging member to uniformly charge a surface of a latent image bearing member in contact therewith, a charge bias application unit to apply a charge bias to the charging member, a conductive member to contact a surface of the charging member, and a different-valued bias application unit to apply a different-valued bias different from the charge bias to the conductive member. The image forming apparatus includes a latent image bearing member to bear a latent image, a latent image forming unit to form the latent image on the latent image bearing member, a development unit to develop the latent image with toner, and the charging device.

摘要翻译： 一种充电装置和使用该充电装置的图像形成装置。 充电装置包括：充电部件，用于使与其接触的潜像承载部件的表面均匀充电;充电偏压施加单元，用于向充电部件施加充电偏压;导电部件，用于接触充电部件的表面;以及 不同值的偏置施加单元，用于将不同于充电偏压的不同值的偏压施加到导电构件。 图像形成装置包括：潜像承载部件，用于承载潜像;潜像形成单元，用于在潜像承载部件上形成潜像;显影单元，用调色剂显影潜象;以及充电装置。

公开(公告)号：US20080181654A1

公开(公告)日：2008-07-31

申请号：US11972154

申请日：2008-01-10

申请人： Yoshio SAKAGAWA ,  Tetsumaru Fujita ,  Yuji Nagatomo

发明人： Yoshio SAKAGAWA ,  Tetsumaru Fujita ,  Yuji Nagatomo

IPC分类号： G03G15/02

CPC分类号： G03G15/0225

摘要： An image forming apparatus capable of maintaining cleaning performance of a cleaning brush and downsizing the apparatus main body. Transfer residual toner accumulated on the cleaning brush is transferred onto a photoreceptor by an electrostatic force, hence the cleaning brush becomes clean and the cleaning performance thereof improves. Therefore, the photoreceptor and a charging roller can be cleaned well by the cleaning brush over a long period of time, and the photoreceptor can be charged well by the charging roller over a long period of time. Moreover, because the transfer residual toner that is transferred from the cleaning brush onto the photoreceptor is recovered by a developing device, it is not necessary to provide the apparatus main body with a toner recovery portion that is specially designed for recovering the transfer residual toner, hence the apparatus main body can be downsized.

摘要翻译： 一种能够保持清洁刷的清洁性能并且使装置主体小型化的图像形成装置。 转印在清洁刷上的转印残留调色剂通过静电力转印到感光体上，清洁刷变清洁，清洗性能提高。 因此，可以通过清洁刷长时间清洁感光体和充电辊，并且可以通过充电辊在长时间内充分地对感光体充电。 此外，由于通过显影装置回收从清洁刷转印到感光体上的转印残余调色剂，所以不必为设备主体提供专门设计用于回收转印残留调色剂的调色剂回收部分， 因此能够使装置主体小型化。

公开(公告)号：US09958806B2

公开(公告)日：2018-05-01

申请号：US15346018

申请日：2016-11-08

申请人： Masato Tsuji ,  Tetsumaru Fujita ,  Yuji Nagatomo ,  Mitsutoshi Kichise ,  Yutaro Kaku ,  Kazuki Matsumoto

发明人： Masato Tsuji ,  Tetsumaru Fujita ,  Yuji Nagatomo ,  Mitsutoshi Kichise ,  Yutaro Kaku ,  Kazuki Matsumoto

IPC分类号： G03G15/08

CPC分类号： G03G15/0812

摘要： A developing device includes a toner bearer to rotate while bearing toner and a toner regulator including a bend on a free end side. The bend is disposed in contact with a surface of the toner bearer and defines a regulation nip to adjust an amount of the toner on the toner bearer. The toner regulator further includes an area having a water contact angle greater than or equal to 70 degrees. The area having the water contact angle includes, at least, a downstream end of the bend in a rotation direction of the toner bearer.

公开(公告)号：US07903993B2

公开(公告)日：2011-03-08

申请号：US11972154

申请日：2008-01-10

申请人： Yoshio Sakagawa ,  Tetsumaru Fujita ,  Yuji Nagatomo

发明人： Yoshio Sakagawa ,  Tetsumaru Fujita ,  Yuji Nagatomo

IPC分类号： G03G15/00

CPC分类号： G03G15/0225

摘要： An image forming apparatus capable of maintaining cleaning performance of a cleaning brush and downsizing the apparatus main body. Transfer residual toner accumulated on the cleaning brush is transferred onto a photoreceptor by an electrostatic force, hence the cleaning brush becomes clean and the cleaning performance thereof improves. Therefore, the photoreceptor and a charging roller can be cleaned well by the cleaning brush over a long period of time, and the photoreceptor can be charged well by the charging roller over a long period of time. Moreover, because the transfer residual toner that is transferred from the cleaning brush onto the photoreceptor is recovered by a developing device, it is not necessary to provide the apparatus main body with a toner recovery portion that is specially designed for recovering the transfer residual toner, hence the apparatus main body can be downsized.

摘要翻译： 一种能够保持清洁刷的清洁性能并且使装置主体小型化的图像形成装置。 转印在清洁刷上的转印残留调色剂通过静电力转印到感光体上，清洁刷变清洁，清洗性能提高。 因此，可以通过清洁刷长时间清洁感光体和充电辊，并且可以通过充电辊在长时间内充分地对感光体充电。 此外，由于通过显影装置回收从清洁刷转印到感光体上的转印残余调色剂，所以不必为设备主体提供专门设计用于回收转印残留调色剂的调色剂回收部分， 因此能够使装置主体小型化。