公开(公告)号：US07817955B2

公开(公告)日：2010-10-19

申请号：US11857791

申请日：2007-09-19

申请人： Satoshi Kojima ,  Naohiro Watanabe ,  Osamu Uchinokura ,  Tsuneyasu Nagatomo

发明人： Satoshi Kojima ,  Naohiro Watanabe ,  Osamu Uchinokura ,  Tsuneyasu Nagatomo

IPC分类号： G03G21/00 ,  G03G9/00

CPC分类号： G03G9/0827 ,  G03G9/09716 ,  G03G21/0011

摘要： An image forming apparatus including an image bearing member to bear a latent electrostatic image, a charging member to charge a surface of the image bearing member, an irradiation member to irradiate the image bearing member to write the latent electrostatic image, a development member to develop the latent electrostatic image with a toner to form a visualized image, a transfer device to transfer the visualized image directly or via an intermediate transfer body to a recording medium, a fixing device to fix the transferred image transferred on the recording medium and a cleaning device to remove residual toner remaining on the image bearing member. In the image forming apparatus, the cleaning device includes an elastic member having a blade forming a front end which is in contact with the image bearing member at a pressure of from 2 to 6 MPa and the toner is granulated in an aqueous phase and contains a laminar inorganic mineral having ions between layers at least part of which is modified by an organic ion and an average of a form factor SF-1 of the toner is from 130 to 160.

摘要翻译： 一种图像形成装置，包括承载静电潜像的图像承载部件，对图像承载部件的表面充电的充电部件，照射部件以照射图像承载部件以写入静电潜像，显影部件，以显影 具有调色剂的静电潜像以形成可视化图像，将可视图像直接或经由中间转印体转印到记录介质的转印装置，固定转印在记录介质上的转印图像的定影装置和清洁装置 以去除残留在图像承载部件上的残留调色剂。 在图像形成装置中，清洁装置包括弹性构件，该弹性构件具有形成在2至6MPa的压力下与图像承载构件接触的前端的刮板，并且调色剂在水相中造粒，并且包含 层状无机矿物在层之间具有离子，其中至少一部分由有机离子改性，并且调色剂的形状因子SF-1的平均值为130〜160。

公开(公告)号：US20230139673A1

公开(公告)日：2023-05-04

申请号：US18046436

申请日：2022-10-13

申请人： Kohsuke SATOH ,  Tsuneyasu Nagatomo ,  Junichi Watanabe

发明人： Kohsuke SATOH ,  Tsuneyasu Nagatomo ,  Junichi Watanabe

IPC分类号： C08L67/02 ,  C08G63/183 ,  G03G9/087 ,  G03G9/08

摘要： The present disclosure provides a resin particle including a binder resin, in which the binder resin contains a biomass-derived resin and a recycled resin, and a content (% by mass) of the biomass-derived resin and a content (% by mass) of the recycled resin in the binder resin satisfy the following relational equation (1): Content of recycled resin >Content of biomass-derived resin.

公开(公告)号：US10295919B2

公开(公告)日：2019-05-21

申请号：US15846568

申请日：2017-12-19

申请人： Keiji Makabe ,  Tsuneyasu Nagatomo ,  Kohsuke Satoh ,  Kenji Yoneda

发明人： Keiji Makabe ,  Tsuneyasu Nagatomo ,  Kohsuke Satoh ,  Kenji Yoneda

IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G9/09 ,  G03G9/087 ,  G03G15/08

摘要： A toner is provided. The toner includes toner particles each including a mother particle and external additive particles covering the mother particle. In a SEM image of the toner, toner particles having a ratio Sd/St of from 5% to 50% are present at a frequency of 15% or more, where Sd representing an area of a largest recessed portion D of each toner particle and St representing whole area of the toner particle, Sd and St determined from the SEM image magnified and binarized to discriminate recessed portions and projected portions of the toner particle from each other. An external additive coverage rate Ca at the largest recessed portion D is from 30% to 100%.

公开(公告)号：US09891548B2

公开(公告)日：2018-02-13

申请号：US14729180

申请日：2015-06-03

申请人： Takamasa Hase ,  Yukiko Iwasaki ,  Minoru Masuda ,  Tsuneyasu Nagatomo ,  Kenji Yoneda

发明人： Takamasa Hase ,  Yukiko Iwasaki ,  Minoru Masuda ,  Tsuneyasu Nagatomo ,  Kenji Yoneda

IPC分类号： G03G13/20 ,  G03G13/08 ,  G03G9/087 ,  G03G15/20 ,  G03G15/00 ,  G03G15/08 ,  G03G15/16

CPC分类号： G03G13/20 ,  G03G9/08755 ,  G03G9/08795 ,  G03G9/08797 ,  G03G13/08 ,  G03G15/08 ,  G03G15/16 ,  G03G15/2057 ,  G03G15/6591 ,  G03G2215/0129

摘要： An image forming method is provided. The method includes the steps of forming an electrostatic latent image on a photoconductor; developing the electrostatic latent image into a toner image with a toner; transferring the toner image onto a recording medium having a smoothness of 20 s or less; and fixing the toner image on the recording medium. The toner exhibits an adhesion force of 100 gf or more, where the adhesion force is the maximum value of a pull force between a layer of the toner and standard paper determined by a tacking test with a probe temperature of 140° C.

公开(公告)号：US20130216944A1

公开(公告)日：2013-08-22

申请号：US13877108

申请日：2011-10-18

申请人： Masana Shiba ,  Ryuta Chiba ,  Tsuneyasu Nagatomo

发明人： Masana Shiba ,  Ryuta Chiba ,  Tsuneyasu Nagatomo

IPC分类号： G03G9/00 ,  G03G15/08

CPC分类号： G03G9/0819 ,  G03G9/0804 ,  G03G9/0806 ,  G03G9/0827 ,  G03G9/08755 ,  G03G9/08782 ,  G03G9/08795

摘要： A toner contains a binder resin, a colorant, and a releasing agent, wherein the toner contains toner particles, and wherein a proportion of the toner particles containing one or more voids having diameters D1 of larger than 0.0 μm but 0.5 μm or smaller is more than 5.0% to 60%, and a proportion of the toner particles containing one or more voids having diameters D2 of 1.0 μm or larger is 10% or less.

摘要翻译： 调色剂含有粘合剂树脂，着色剂和脱模剂，其中调色剂含有调色剂颗粒，并且其中包含一个或多个直径D1大于0.0μm但为0.5μm或更小的空隙的调色剂颗粒的比例更多 5.0％以上60％以下，直径D2为1.0μm以上的一个或多个空隙的调色剂颗粒的比例为10％以下。

公开(公告)号：US20130130171A1

公开(公告)日：2013-05-23

申请号：US13666332

申请日：2012-11-01

申请人： Masaki Watanabe ,  Osamu Uchinokura ,  Junichi Awamura ,  Takahiro Honda ,  Satoshi Ogawa ,  Tsuneyasu Nagatomo ,  Hiroshi Yamashita

发明人： Masaki Watanabe ,  Osamu Uchinokura ,  Junichi Awamura ,  Takahiro Honda ,  Satoshi Ogawa ,  Tsuneyasu Nagatomo ,  Hiroshi Yamashita

IPC分类号： G03G9/08

CPC分类号： G03G9/0825 ,  G03G9/09314 ,  G03G9/09321 ,  G03G9/09328 ,  G03G9/09392

摘要： A toner including a core particle, an inner shell layer covering the core, and an outer shell layer covering the inner shell layer is provided. The core particle includes a resin P. The inner shell layer includes fine particles of a resin A. The outer shell layer includes fine particles of a resin B. The toner satisfies the following formulae (1) to (3): 4.5≦T½(P)−Tfb(P)≦14  (1) 20≦T½(A)−Tfb(A)≦40  (2) 23.5≦T½(B)−Tfb(B)≦40  (3) wherein T½(P), T½(A), and T½(B) represent ½ method temperatures of the resins P, A, and B, respectively, and Tfb(P), Tfb(A), and Tfb(B) represent flow beginning temperatures of the resins P, A, and B, respectively, and wherein the ½ method temperatures and the flow beginning temperatures are measured by a flowtester.

摘要翻译： 提供了包括芯颗粒，覆盖芯的内壳层和覆盖内壳层的外壳层的调色剂。 核心颗粒包括树脂P.内壳层包括树脂A的细颗粒。外壳层包括树脂B的细颗粒。调色剂满足下式（1）至（3）：4.5@T 1/2（ P）-Tfb（P）@ 14（1）20 @ T 1/2（A）-Tfb（A）@ 40（2）23.5@T½（B）-Tfb（B）@ 40（3） T 1/2（A）和T 1/2（B）分别表示树脂P，A和B的1/2方法温度，Tfb（P），Tfb（A）和Tfb（B）表示树脂P的流动开始温度 ，A和B，并且其中1/2方法温度和流动开始温度由流动器测量。

公开(公告)号：US20100075245A1

公开(公告)日：2010-03-25

申请号：US12564595

申请日：2009-09-22

申请人： Masaki Watanabe ,  Naohito Shimota ,  Hiroshi Yamashita ,  Naohiro Watanabe ,  Tsuneyasu Nagatomo ,  Tsuyoshi Sugimoto ,  Shinichi Wakamatsu ,  Kenya Itoh ,  Mikio Yamahiro

发明人： Masaki Watanabe ,  Naohito Shimota ,  Hiroshi Yamashita ,  Naohiro Watanabe ,  Tsuneyasu Nagatomo ,  Tsuyoshi Sugimoto ,  Shinichi Wakamatsu ,  Kenya Itoh ,  Mikio Yamahiro

IPC分类号： G03G13/08 ,  B32B15/02 ,  G03G9/087 ,  G03G9/08

CPC分类号： G03G9/08702 ,  G03G9/0821 ,  G03G9/0827 ,  G03G9/08708 ,  G03G9/08726 ,  G03G9/08755 ,  G03G9/08773 ,  G03G9/08791 ,  G03G9/08793 ,  G03G2215/0129 ,  G03G2215/0604 ,  Y10T428/2982

摘要： Disclosed is a resin particle having a volume average particle diameter of 10 nm to 500 nm, obtained by polymerizing an addition polymerizable monomer containing a silsesquioxane (a) represented by Formula (I) or by copolymerizing the silsesquioxane (a) with an addition polymerizable monomer (b), where R1 to R7 each independently represent a group selected from the group consisting of hydrogen, alkyl having 1 to 40 carbon atoms, substituted or unsubstituted aryl, and substituted or unsubstituted arylalkyl; any hydrogen in the alkyl group is optionally substituted by fluorine and any —CH2— is optionally substituted by —O—, —CH═CH—, cycloalkylene or cycloalkenylene; any hydrogen in alkylene in the arylalkyl group is optionally substituted by fluorine and any —CH2— is optionally substituted by —O— or —CH═CH—; and A1 represents an addition polymerizable functional group.

摘要翻译： 公开了通过使含有由式（I）表示的倍半硅氧烷（a）的加成聚合性单体或将倍半硅氧烷（a）与可加聚单体共聚而得到的体积平均粒径为10nm〜500nm的树脂粒子 （b），其中R 1至R 7各自独立地表示选自氢，具有1至40个碳原子的烷基，取代或未取代的芳基和取代或未取代的芳基烷基的基团; 烷基中的任何氢任选被氟取代，任何-CH 2 - 任选被-O - ， - CH = CH-，亚环烷基或环亚烯基取代; 芳烷基中亚烷基中的任何氢任选被氟取代，任何-CH 2 - 任选被-O-或-CH = CH-取代; A1表示可加成聚合官能团。

公开(公告)号：US07455942B2

公开(公告)日：2008-11-25

申请号：US11227566

申请日：2005-09-16

申请人： Tsuneyasu Nagatomo ,  Akihiro Kotsugai ,  Hiroshi Yamashita ,  Masayuki Ishii ,  Hiroto Higuchi ,  Osamu Uchinokura ,  Satoshi Mochizuki ,  Fumihiro Sasaki ,  Hisashi Nakajima ,  Hideki Sugiura ,  Yasuo Asahina ,  Shinya Nakayama ,  Koichi Sakata ,  Tomoyuki Ichikawa ,  Takuya Saito ,  Sonoh Matsuoka

发明人： Tsuneyasu Nagatomo ,  Akihiro Kotsugai ,  Hiroshi Yamashita ,  Masayuki Ishii ,  Hiroto Higuchi ,  Osamu Uchinokura ,  Satoshi Mochizuki ,  Fumihiro Sasaki ,  Hisashi Nakajima ,  Hideki Sugiura ,  Yasuo Asahina ,  Shinya Nakayama ,  Koichi Sakata ,  Tomoyuki Ichikawa ,  Takuya Saito ,  Sonoh Matsuoka

IPC分类号： G03G9/08

CPC分类号： G03G9/097

摘要： It is an object of the present invention to provide a toner that can sustain favorable transferability and cleaning ability for prolonged periods; prevent photoconductor filming; exhibit no variation in image nonuniformity or external additive immersion induced by developer agitation at the time of use; excels in stability with flowability and charge stability over prolonged periods. Therefore, provided is the toner of which the quantity of aggregate of residual external additives found on the sieve of 635-mesh and 452 cm2 of mesh area, after 0.2 g of the toner on the sieve is blasted with air at a blow pressure of 0.2 MPa from 160 mm above the sieve while being air-suctioned at a suction force of 5 mmHg, and then air-suctioned at a suction force of 20 mmHg, is 4,500 or less and 5 or more.

摘要翻译： 本发明的一个目的是提供一种能够延长期间的转印性和清洁能力的调色剂。 防止感光膜成膜; 在使用时不显示由显影剂搅拌引起的图像不均匀性或外部添加剂浸渍的变化; 在长时间内具有流动性和电荷稳定性的稳定性。 因此，提供了在筛上的0.2g调色剂之后，在筛网上存在635目筛和452cm 2网眼面积的残余外部添加剂骨料数量的调色剂 在空气中以160mm的筛子空气吹压压力为0.2MPa，同时以5mmHg的抽吸力空气抽吸，然后以20mmHg的抽吸力空气抽吸为4,500以下且5以上。

公开(公告)号：US20070218387A1

公开(公告)日：2007-09-20

申请号：US11687328

申请日：2007-03-16

申请人： Masayuki ISHII ,  Tsuneyasu Nagatomo

发明人： Masayuki ISHII ,  Tsuneyasu Nagatomo

IPC分类号： G03G9/08

CPC分类号： G03G9/09725 ,  G03G9/09708 ,  G03G9/09716 ,  G03G9/09733

摘要： A toner which combines excellent cleaning ability, image quality and durability, as well as a developer and an image forming method using the toner are provided. A toner comprising a toner base particle which comprises at least a binding resin and a colorant, and an external additive, wherein an external additive is a non-spherical amorphous silica particle and a major axis of the silica particle is 40 nm to 180 nm. An aspect wherein the non-spherical amorphous silica particle has a true specific gravity of 1.8 to 2.3 and the silica particle is hydrophobilized and a hydrophobilization degree is 40 or more, and an aspect wherein the non-spherical amorphous silica particle is produced by a dry system and a mass reduction rate is 5% by mass or less when the silica particle is heated from 30° C. up to 250° C. are preferable.

摘要翻译： 提供了具有优异的清洁能力，图像质量和耐久性的调色剂以及使用调色剂的显影剂和图像形成方法。 包含至少包含粘合树脂和着色剂的调色剂基础颗粒和外部添加剂的调色剂，其中外部添加剂是非球形无定形二氧化硅颗粒，并且二氧化硅颗粒的长轴为40nm至180nm。 其中，非球形无定形二氧化硅粒子的真比重为1.8〜2.3，二氧化硅粒子疏水化，疏水化度为40以上，其中非球状无定形二氧化硅粒子通过干燥 系统，并且当将二氧化硅颗粒从30℃加热至250℃时，质量减少率为5质量％以下。

公开(公告)号：US11079700B2

公开(公告)日：2021-08-03

申请号：US16811483

申请日：2020-03-06

申请人： Keiji Makabe ,  Tsuneyasu Nagatomo ,  Kohsuke Satoh ,  Daichi Hisakuni ,  Kousuke Suzuki ,  Shintaro Akiyama

发明人： Keiji Makabe ,  Tsuneyasu Nagatomo ,  Kohsuke Satoh ,  Daichi Hisakuni ,  Kousuke Suzuki ,  Shintaro Akiyama

IPC分类号： G03G9/00 ,  G03G15/08 ,  G03G9/08 ,  G03G9/087 ,  G03G9/097

摘要： An image forming apparatus is provided that includes: an image bearer; a charger; an irradiator; a developing device containing a toner; and a transfer device. The image bearer has a Martens hardness of from 185 to 250 N/m2. The toner satisfies a relation 0.13≤X/Dn≤0.16, where X [μm] represents an average value of an amount of deformation of the toner by micro-indentation at when a load reaches 3.00×10−4 N at a loading rate of 3.0×10−5 N/sec under an environment of 32 degrees C. and 40% RH, and Dn [μm] represents a number average particle diameter of the toner. The toner contains an external additive comprising silica particles and particles composed mainly of strontium titanate. The particles composed mainly of strontium titanate further contain a third element M selected from the group consisting of La, Mg, Ca, Sn, and Si.