公开(公告)号：US08735041B2

公开(公告)日：2014-05-27

申请号：US12730583

申请日：2010-03-24

申请人： Takanori Kamoto ,  Takayuki Yamanaka ,  Osamu Wada ,  Tadashi Iwamatsu ,  Nobuyuki Yoshioka

发明人： Takanori Kamoto ,  Takayuki Yamanaka ,  Osamu Wada ,  Tadashi Iwamatsu ,  Nobuyuki Yoshioka

IPC分类号： G03G9/10

CPC分类号： G03G9/1075 ,  G03G9/1131 ,  G03G9/1133

摘要： A method for producing a low density resin-coated carrier having a small resin amount to a carrier core material and having a uniform resin coating layer formed on the carrier core material is provided. A resin-coated carrier has a carrier core material and a resin coating layer formed on the surface of the carrier core material. The carrier core material has pores and an apparent density of 1.6 g/cm3 to 2.0 g/cm3 and a remanent magnetization of 10 emu/g of less. The resin coating layer is formed by a dry process of adhering resin particles to a surface of the carrier core material and applying heat and impact force to the resin particles. A volume average particle size of the resin particles is less than 1 μm. A two-component developer containing the resin-coated carrier is charged in a developing device in an image forming apparatus, and an image is formed.

摘要翻译： 提供了一种制造具有对载体芯材料具有小树脂量并且在载体芯材上形成均匀的树脂涂层的低密度树脂涂覆载体的方法。 树脂被覆载体具有载体芯材和在载体芯材的表面上形成的树脂被覆层。 载体芯材料具有孔隙，表观密度为1.6g / cm 3至2.0g / cm 3，剩余磁化强度为10emu / g以下。 树脂涂层通过将树脂颗粒粘附到载体芯材的表面并对树脂颗粒施加热和冲击力的干法来形成。 树脂粒子的体积平均粒径小于1μm。 将包含树脂涂布载体的双组分显影剂装入图像形成装置的显影装置中，形成图像。

公开(公告)号：US20100279221A1

公开(公告)日：2010-11-04

申请号：US12769121

申请日：2010-04-28

申请人： Osamu Wada ,  Takanori Kamoto ,  Nobuyuki Yoshioka ,  Ayae Nagaoka ,  Tadashi Iwamatsu

发明人： Osamu Wada ,  Takanori Kamoto ,  Nobuyuki Yoshioka ,  Ayae Nagaoka ,  Tadashi Iwamatsu

IPC分类号： G03G9/00 ,  G03G15/08

CPC分类号： G03G9/1137 ,  G03G9/107 ,  G03G9/1131 ,  G03G9/1133 ,  G03G9/1136

摘要： A resin-coated carrier is provided. A resin-coated carrier includes a carrier core and a resin coating layer formed on a surface of the carrier core. The carrier core is composed of a porous material having surface fine pores formed on a surface thereof, and has an apparent density of 1.6 to 2.0 g/cm3. The resin coating layer contains cross-linked fine resin particles. Additionally, the resin-coated carrier is configured such that a volume average particle size of the cross-linked fine resin particles contained in the resin coating layer and an area average diameter of the surface fine pores satisfy a predetermined relational expression.

摘要翻译： 提供树脂涂层载体。 树脂涂布载体包括载体芯和形成在载体芯的表面上的树脂涂层。 载体芯由具有在其表面形成的表面细孔的多孔材料构成，表观密度为1.6〜2.0g / cm 3。 树脂涂层含有交联的细树脂颗粒。 另外，树脂被覆载体被构造成使得包含在树脂被覆层中的交联的微粒树脂颗粒的体积平均粒径和表面细孔的面积平均直径满足预定的关系式。

公开(公告)号：US20090074463A1

公开(公告)日：2009-03-19

申请号：US12298651

申请日：2007-04-25

申请人： Shigeru Nishio ,  Tadashi Iwamatsu ,  Yuhsuke Ebata

发明人： Shigeru Nishio ,  Tadashi Iwamatsu ,  Yuhsuke Ebata

IPC分类号： G03G15/02 ,  H01T19/00

CPC分类号： G03G15/0258 ,  G03G15/0291 ,  H01T19/00

摘要： A corona discharge device (10) comprises a discharge electrode (1) for causing electric discharge, a discharge product removing member (4) provided around the discharge electrode (1), and containing a material capable of removing a discharge product, and a shield plate (3) interposed between the discharge electrode (1) and the discharge product removing member (4), having a through-hole (3a) open toward the discharge electrode (1), and having a surface opposed to the discharge electrode (1) and at least the surface being made of a metallic material. With this, a corona discharge device, a photoreceptor charger, and a method for making a discharge product removing member which realize high trapping efficiency for discharge products and a long life of a discharge product removing filter are provided.

摘要翻译： 电晕放电装置（10）包括放电用的放电电极（1），设置在放电电极（1）周围的放电产物除去部件（4），并且容纳能够除去放电产物的材料，以及屏蔽体 插入在放电电极（1）和放电产物除去部件（4）之间的板（3），具有朝向放电电极（1）开放的通孔（3a），并且具有与放电电极（1）相对的表面 ），并且至少该表面由金属材料制成。 由此，提供了电晕放电装置，感光体充电器，以及放电产物除去部件的制造方法，其实现放电产品的高捕集效率和放电产物除去过滤器的使用寿命。

公开(公告)号：US06330416B1

公开(公告)日：2001-12-11

申请号：US09323811

申请日：1999-06-02

申请人： Masanori Yamada ,  Tetsurou Toyoshima ,  Tadashi Iwamatsu ,  Nobuyuki Azuma

发明人： Masanori Yamada ,  Tetsurou Toyoshima ,  Tadashi Iwamatsu ,  Nobuyuki Azuma

IPC分类号： G03G1508

CPC分类号： G03G15/0812

摘要： A developing device and a blade of the developing device, includes a contact section which is in plane contact with a development roller, and an inclined section which extends from an end of the contact section so as to form a flare at an inflow section of a one-component developer between the blade and development roller. When a flare angle between the blade having the flare and a line tangent to the development roller is denoted by a tilt angle &thgr;, 30°≦&thgr;≦90°. Thus, if the flare angle at the inflow section of the one-component developer between the blade and development roller is optimized, even when the one-component developer deteriorates with time, for example, the flowability is changed with time, it is possible to provide a developing device and a blade of the developing device capable of forming a one-component developer layer with an extremely stable deposit of one-component developer. Moreover, it is possible to provide a blade which can increase the dimensional tolerance of the inclined section and can be produced easily at a low cost.

摘要翻译： 显影装置的显影装置和叶片包括与显影辊平面接触的接触部分和从接触部分的端部延伸以在其中的一个流体部分形成一个喇叭口的倾斜部分 叶片和显影辊之间的单组分显影剂。 当具有喇叭口的叶片和与显影辊相切的直线之间的喇叭角由倾斜角θ表示时，30°<θ= 90°。 因此，如果叶片和显影辊之间的单组分显影剂的流入部分处的扩口角度最优化，即使当单组分显影剂随时间劣化时，例如流动性随时间变化， 提供能够形成具有非常稳定的单组分显影剂沉积物的单组分显影剂层的显影装置和显影装置的叶片。 此外，可以提供能够提高倾斜部的尺寸公差的叶片，并且能够以低成本容易地制造。

公开(公告)号：US06323888B1

公开(公告)日：2001-11-27

申请号：US09642131

申请日：2000-08-18

申请人： Tadashi Iwamatsu ,  Tetsuro Toyoshima ,  Nobuyuki Azuma ,  Yoshinori Mutou ,  Yoshinori Nakajima

发明人： Tadashi Iwamatsu ,  Tetsuro Toyoshima ,  Nobuyuki Azuma ,  Yoshinori Mutou ,  Yoshinori Nakajima

IPC分类号： B41J2385

CPC分类号： G03G15/326 ,  G03G15/04072 ,  H04N1/29

摘要： An image forming apparatus has the following characteristics: the diameter of an exposure beam for exposing a latent image is not more than twice a minimum dot recording period p in peak intensity 1/e2, and the value of a spatial frequency characteristic function of a latent image defined by the thickness of a photoreceptor layer, the dielectric constant of the photoreceptor layer, the thickness of a developer layer, the dielectric constant of the developer layer and a spatial frequency &ohgr; defined as &ohgr;=&pgr;/p is at least 0.3. The image forming apparatus having such characteristics can reproduce an image of high resolution exceeding 600 to 1200 DPI with high fidelity.

摘要翻译： 图像形成装置具有以下特征：用于曝光潜像的曝光光束的直径不大于峰值强度1 / e2的最小点记录周期p的两倍，并且潜在的空间频率特征函数的值 由感光体层的厚度，感光体层的介电常数，显影剂层的厚度，显影剂层的介电常数和定义为Ω= pi / p的空间频率Ω定义的图像为至少0.3。 具有这种特征的图像形成装置可以以高保真度再现超过600至1200DPI的高分辨率图像。

公开(公告)号：US06298206B1

公开(公告)日：2001-10-02

申请号：US09506304

申请日：2000-02-17

申请人： Tetsuro Toyoshima ,  Tadashi Iwamatsu ,  Nobuyuki Azuma ,  Yoshinori Mutou ,  Yoshinori Nakajima

发明人： Tetsuro Toyoshima ,  Tadashi Iwamatsu ,  Nobuyuki Azuma ,  Yoshinori Mutou ,  Yoshinori Nakajima

IPC分类号： G03G1508

CPC分类号： G03G15/344 ,  G03G15/0806 ,  G03G15/0812 ,  G03G2215/0614 ,  G03G2215/0634

摘要： It is an object of the invention that development quality is improved by increasing the amount of charge during the transportation of toner by a toner holding member and decreasing the amount of charge during development for rendering an electrostatic latent image visible. A one-component non-magnetic toner is supplied from a toner supplying unit to the toner holding member such that the toner is electrostatically attracted to adhere to the toner holding member with a large amount of charge. The charge of the toner under transportation is reduced by charge adjusting means such as a conductive roller supplied with a potential from a frictional charging member or a voltage source, whereby the amount of development or the amount of toner adhering to an electrostatic latent image is increased and development quality is improved.

摘要翻译： 本发明的一个目的是通过在调色剂保持部件输送调色剂期间增加电荷量并减少显影期间的电荷量，使静电潜像变得可见，从而提高显影质量。 单色非磁性调色剂从调色剂供应单元供应到调色剂保持构件，使得调色剂被静电吸引以以大量的电荷附着到调色剂保持构件。 运输中的调色剂的电荷通过诸如由摩擦充电部件或电压源提供电位的导电辊等电荷调节装置而减少，由此显影量或与静电潜像粘附的调色剂量增加 开发质量提高。

公开(公告)号：US6087056A

公开(公告)日：2000-07-11

申请号：US307180

申请日：1999-05-07

申请人： Tetsuro Toyoshima ,  Tadashi Iwamatsu ,  Nobuyuki Azuma ,  Hideaki Fujita ,  Takayuki Yamanaka

发明人： Tetsuro Toyoshima ,  Tadashi Iwamatsu ,  Nobuyuki Azuma ,  Hideaki Fujita ,  Takayuki Yamanaka

IPC分类号： G03G9/08 ,  G03G13/08 ,  G03G15/08 ,  G03G15/14

CPC分类号： G03G13/08 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/0823

摘要： A toner which can exhibit 5 nN or less of inter-particle force calculated by the following equation (1) when the toner is laminated and carried on a toner carrier:Fv=q.multidot.E-Fi (1)where Fv is an inter-particle force, q.multidot.E is a Coulomb force calculated by the following equation:q.multidot.E=q.multidot.{Vb+(Q/M).multidot..delta..multidot.P.multidot.dt.sub.1.sup.2 /(2.epsilon.o.epsilon..sub.T)}/(.epsilon..sub.T .multidot.g+dt.sub.1) (2)where Fi is an image-force calculated by the following equation (3):Fi={(W.sub.1 .multidot..pi.d.sup.3 .multidot..delta.)/(6 .epsilon.o .epsilon..sub.T)}.multidot.(Q/M).sup.2 (3)where q is a quantity of charge [C] of the toner particle to be developed, E is an electric field strength [V/m] acting on the toner layer, Q/M is a toner charge-to-mass ratio [mC/g], W.sub.1 is an amount of toner separated by development among the toner laminated and carried on the toner carrier, .epsilon.o is a vacuum dielectric constant [C/(V.multidot.m)], .epsilon..sub.T is an apparent specific dielectric constant [C/(V.multidot.m)] of the toner layer, d is an average particle size [.mu.m] of the toner, .delta. is a true density [g/cm.sup.3 ] of the toner, g is a gap [mm] between the outermost surface of the toner on the toner carrier and the electrostatic latent image holder, dt.sub.1 is a thickness [.mu.m] of the toner layer on the toner carrier, Vb is a development bias voltage [V] and P is a toner packing rate.The present invention provides a toner and a non-contact developing method using the same which realize stable flying-development by suppressing to 5 nN or less the inter-particle force of the toner other than the image-force acting on the toner laminated and carried on the toner carrier.

摘要翻译： 当调色剂层压并承载在调色剂载体上时，可以通过下列等式（1）计算出5nN或更小的颗粒间力的调色剂：Fv = qxE-Fi（1）其中Fv是颗粒间力 ，qxE是通过以下等式计算的库仑力：qxE = qx {Vb +（Q / M）x delta xPxdt12 /（2 epsilonεT）} /（epsilon Txg + dt1）（2）其中，Fi是图像 - 由下式（3）计算的力：Fi = {（W1x pi d3x delta）/（6 epsilonεT）} x（Q / M）2（3）其中q是电荷量[C] 调色剂颗粒，E是作用在调色剂层上的电场强度[V / m]，Q / M是调色剂电荷质量比[mC / g]，W1是通过显影分离出的调色剂量 在层压并承载在调色剂载体上的调色剂中，ε是真空介电常数[C /（Vxm）]，εT是调色剂层的表观比介电常数[C /（Vxm）]，d是平均 调色剂的粒径μ，δ是真密度[g / cm 3] o f是调色剂，g是调色剂载体上的调色剂的最外表面与静电潜像保持体之间的间隙[mm]，dt1是调色剂载体上调色剂层的厚度μ，Vb是显影剂 偏压[V]和P是调色剂包装率。 本发明提供一种调色剂和非接触显影方法，其使用该调色剂和非接触显影方法，其通过抑制除了作用在层叠和携带的调色剂上的图像力之外的调色剂的颗粒间的力以5NN以下，实现稳定的飞行显影 在调色剂载体上。

公开(公告)号：US6064847A

公开(公告)日：2000-05-16

申请号：US328240

申请日：1999-06-08

申请人： Tadashi Iwamatsu ,  Nobuyuki Azuma

发明人： Tadashi Iwamatsu ,  Nobuyuki Azuma

IPC分类号： C23C16/02 ,  C23C16/14 ,  C23C16/34 ,  G03G9/08 ,  G03G13/08 ,  H01L21/28 ,  H01L21/285 ,  G03G15/08

CPC分类号： G03G13/08 ,  G03G9/0819

摘要： A developing device for developing an electrostatic latent image on a photoconductive member has a developing roller that bears a one-component developer on its surface and develops the electrostatic latent image by contacting the photoconductive member; a supply roller for supplying developer to the developing roller; and a blade that contacts the developing roller so as to regulate a layer thickness of the developer supplied by the supply roller, wherein supposing that the developer has a volume-average particle size represented by Dbk, the developer at this time being maintained on the developing roller as a layer that has been supplied by the supply roller and again formed so as to have a predetermined thickness by the blade after the developing roller, on which the developer was formed as a layer having a predetermined thickness, carried out a black-image developing process, and supposing that the volume-average particle size of the developer is Dwt, the developer at this time being maintained on the developing roller as a layer that has been supplied by the supply roller and again formed so as to have a predetermined thickness by the blade after the developing roller, on which the developer was formed as a layer having a predetermined thickness, carried out a white-image developing process, an inequality, Dwt/Dbk>0.8, is satisfied.

摘要翻译： 用于在感光体上显影静电潜像的显影装置具有在其表面上承载单组分显影剂的显影辊，并通过使感光体接触来显影静电潜像; 用于向显影辊供应显影剂的供应辊; 以及与显影辊接触以调节由供给辊供应的显影剂的层厚度的刀片，其中假设显影剂具有由Dbk表示的体积平均粒度，则此时的显影剂保持在显影剂 辊作为由供应辊提供并且在其上形成具有预定厚度的层的显影辊之后通过刮刀重新形成为具有预定厚度的层，执行黑色图像 显影过程，并且假设显影剂的体积平均粒径为Dwt，此时的显影剂作为由供给辊供应并再次形成为具有预定厚度的层保持在显影辊上 通过在显影辊上形成具有预定厚度的层的显影辊之后的刮刀进行白图像显影处理， 不等式，Dwt / Dbk> 0.8。

公开(公告)号：US6035171A

公开(公告)日：2000-03-07

申请号：US244582

申请日：1999-02-04

申请人： Toshihiko Takaya ,  Nobuyuki Azuma ,  Masanori Yamada ,  Atsushi Inoue ,  Keiji Yasuda ,  Takayuki Yamanaka ,  Tadashi Iwamatsu ,  Kazuhiro Matsuyama ,  Hiroshi Tatsumi ,  Katsumi Adachi ,  Yukihito Nishio

发明人： Toshihiko Takaya ,  Nobuyuki Azuma ,  Masanori Yamada ,  Atsushi Inoue ,  Keiji Yasuda ,  Takayuki Yamanaka ,  Tadashi Iwamatsu ,  Kazuhiro Matsuyama ,  Hiroshi Tatsumi ,  Katsumi Adachi ,  Yukihito Nishio

IPC分类号： G03G15/08

CPC分类号： G03G15/0815

摘要： The object of the invention is to certainly remove and certainly recover the charged toner remaining on a developing roller after development. A single component toner which is delivered to the developing roller via a toner-supplying roller is made into a relatively thin layer of a predetermined thickness with a charging plate and is frictionally charged with a given quantity of electric charge. Subsequently, the toner is adhered on a photoreceptor drum along by the electrostatic latent image to develop an image at the developing region at which the developing roller comes into contact with the photoreceptor drum. After development, the electric charge of the toner layer on the developing roller is removed with an electric-charge-removing sheet. The toner after development is recovered into a toner hopper via the toner-supplying roller. In rotation direction of the developing roller, the relation of the width Wt of the toner layer to the width Wc of the electric-charge-removing sheet is established so as to be Wc.gtoreq.Wt. Thus, the electric charge of the toner layer on the developing roller is certainly removed.

摘要翻译： 本发明的目的是确定地清除并显着回收显影后残留在显影辊上的带电调色剂。 通过调色剂供给辊输送到显影辊的单组分调色剂通过带电板被制成具有预定厚度的相对较薄的层，并以给定量的电荷摩擦。 随后，调色剂沿着静电潜像附着在感光鼓上，以在显影辊与感光鼓接触的显影区域显影。 显影后，用电荷去除片除去显影辊上的调色剂层的电荷。 显影后的调色剂通过调色剂供应辊回收到调色剂料斗中。 在显影辊的旋转方向上，确定调色剂层的宽度Wt与电荷去除片的宽度Wc之间的关系为Wc> = Wt。 因此，显影辊上的调色剂层的电荷肯定被去除。

公开(公告)号：US08409778B2

公开(公告)日：2013-04-02

申请号：US12691430

申请日：2010-01-21

申请人： Osamu Wada ,  Tadashi Iwamatsu ,  Takanori Kamoto ,  Nobuyuki Yoshioka ,  Natsuki Matsuura ,  Nobuhiro Seki ,  Masatomo Hayashi

发明人： Osamu Wada ,  Tadashi Iwamatsu ,  Takanori Kamoto ,  Nobuyuki Yoshioka ,  Natsuki Matsuura ,  Nobuhiro Seki ,  Masatomo Hayashi

IPC分类号： G03G15/08

CPC分类号： G03G9/1136 ,  G03G9/107 ,  G03G2215/0607

摘要： A resin coated carrier is provided that can stably charge a toner having added thereto an external additive having a large particle size over a long period of time and can prevent blocking of a developer. The resin coated carrier satisfies the following formula (1): log(Mb/Ma)>2  (1) in which Ma is a weight average molecular weight of a silicone resin having the minimum weight average molecular weight, contained in a resin coating layer, and Mb is a weight average molecular weight of a silicone resin having the maximum weight average molecular weight, and the following formula (2) is satisfied: 0.5≦−log(A/B)≦2.5  (2) in which A is a volume resistance (Ω/cm) under electric field of 1,000 V/cm obtained by conducting a stirring test, and B is a volume resistance (Ω/cm) under electric field of 1,000 V/cm before the stirring test.

摘要翻译： 提供一种树脂涂布的载体，其可以在长时间内稳定地加入具有大粒径的外部添加剂的调色剂，并且可以防止显影剂的堵塞。 树脂涂布载体满足下式（1）：log（Mb / Ma）> 2（1）其中Ma是包含在树脂涂层中的具有最小重均分子量的有机硅树脂的重均分子量 ，Mb是具有最大重均分子量的有机硅树脂的重均分子量，满足下式（2）：0.5＆nlE; -log（A / B）＆nlE; 2.5（2）其中A 是在通过搅拌试验获得的1000V / cm的电场下的体积电阻（＆amp; OHgr / cm），B是在搅拌试验前的1000V / cm的电场下的体积电阻（＆amp; OHgr / cm）。