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：US06064463A

公开(公告)日：2000-05-16

申请号：US204811

申请日：1998-12-03

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

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

IPC分类号： G03G15/08 ,  G03B27/32 ,  G03B27/52

CPC分类号： G03G15/0812

摘要： A blade is pressed against a developing roller for regulating the amount of toner which is deposited on a surface of the developing roller. The blade is formed with a slant face at its tip end, to which the toner is transported along a direction of rotation of the developing roller. An angle of aperture .theta. at a toner inlet portion defined by the developing roller and the slant face is set at 12.5.degree. or more, the angle of aperture counting in an angle .psi. of the slant face, elastic deformation and radius (R) of the developing roller, and an angle .alpha. related to a nip width w on which the blade contacts with the developing roller. Such an angle of aperture .theta. provides a great allowance for a free length l of the blade, thereby permitting the blade to maintain a constant toner mass for forming a uniform toner layer.

摘要翻译： 叶片被压靠在显影辊上，用于调节沉积在显影辊表面上的调色剂的量。 刀片在其尖端处形成有倾斜面，调色剂沿着显影辊的旋转方向传送到该表面。 由显影辊和倾斜面限定的调色剂入口部分处的孔的角度θ设定为12.5°或更大，倾斜角度在倾斜角度psi，弹性变形和半径（R） 显影辊和与刀片与显影辊接触的辊隙宽度w相关的角度α。 孔的这种角度对刀片的自由长度l提供了很大的余量，从而允许刀片保持恒定的调色剂质量以形成均匀的调色剂层。

公开(公告)号：US6154627A

公开(公告)日：2000-11-28

申请号：US256616

申请日：1999-02-23

申请人： Tadashi Iwamatsu ,  Kazuhiro Matsuyama ,  Toshihiko Takaya ,  Atsushi Inoue ,  Masanori Yamada ,  Nobuyuki Azuma ,  Takayuki Yamanaka

发明人： Tadashi Iwamatsu ,  Kazuhiro Matsuyama ,  Toshihiko Takaya ,  Atsushi Inoue ,  Masanori Yamada ,  Nobuyuki Azuma ,  Takayuki Yamanaka

IPC分类号： G03G15/08

CPC分类号： G03G15/0818

摘要： An object of the present invention is to prevent an electrical breakdown of a toner layer and an occurrence of overcurrent, thereby preventing quality of image from being degraded at the time of development, when development with one-component toner is conducted using a developing roller of low resistance. The resistance value Rd of a developing roller which carries and conveys one-component toner in a manner of coming into contact with a photoconductor which bears an electrostatic latent image, is defined as Rd=.rho.d.multidot.(Dd1/S1), wherein S1 (cm.sup.2) is an area in which the developing roller comes into contact with the static image bearing member via a toner layer, Dd1 (cm) is a layer thickness of a semiconductive layer which composes the developing roller, and .rho.d (.OMEGA..multidot.cm) is a volume resistivity thereof. The range of the resistance Rd is set as 10.sup.4 5.times.10.sup.7. By using the developing roller of low resistance, excellent development is realized and an electrical breakdown and an overcurrent can be avoided by the resistance value of the toner layer.

摘要翻译： 本发明的目的是为了防止调色剂层的电击穿和过电流的发生，从而在显影时防止图像质量下降，当使用单组分调色剂进行显影时，使用显影辊 低电阻。 以与静电潜像的感光体接触的方式携带并输送单组分调色剂的显影辊的电阻值Rd被定义为Rd = rho dx（Dd1 / S1），其中S1（cm2 ）是显影辊经由调色剂层与静电图像承载部件接触的区域，Dd1（cm）是构成显影辊的半导体层的层厚度，并且rhod（OMEGA xcm）为 体积电阻率。 电阻Rd的范围设定为104 5×107。 通过使用低电阻的显影辊，实现了优异的显影，并且可以通过调色剂层的电阻值避免电击穿和过电流。

公开(公告)号：US5978635A

公开(公告)日：1999-11-02

申请号：US239122

申请日：1999-01-28

申请人： Nobuyuki Azuma ,  Tadashi Iwamatsu ,  Hiroshi Tatsumi ,  Atsushi Inoue ,  Masanori Yamada ,  Takayuki Yamanaka

发明人： Nobuyuki Azuma ,  Tadashi Iwamatsu ,  Hiroshi Tatsumi ,  Atsushi Inoue ,  Masanori Yamada ,  Takayuki Yamanaka

IPC分类号： G03G15/08

CPC分类号： G03G15/0815

摘要： An elastic member for pressing is provided in a prescribed location in an area where the developer carrier comes in contact with the discharging member, in order to bring the discharging member into contact with the developer carrier so that mechanical peeling of the residual developer on the developer carrier is not caused, and the discharging member is provided with a bias power supply for setting bias in a direction imparting to the discharging member a force for electrically drawing the residual developer on the developer carrier away from the developer carrier, and after thus reducing the electric adhesion of the residual developer to the developer carrier, the developer feed member removes the residual developer on the developer carrier in the vicinity of disjunction area or in the contact area of the developer carrier and the developer feed member, thereafter applies new developer in a developer container to the developer carrier in the vicinity of approaching area or in the contact-starting area of the developer carrier and the developer feed member.

摘要翻译： 用于按压的弹性构件设置在显影剂载体与排出构件接触的区域中的规定位置，以使排出构件与显影剂载体接触，从而使显影剂上的残余显影剂机械剥离 不会引起载体，并且放电构件设置有偏置电源，用于在施加到排出构件的方向上设置用于将显影剂载体上的残余显影剂电离拉离显影剂载体的力，并且在此之后减少 残余显影剂对显影剂载体的电粘附，显影剂供给构件在分离区附近或显影剂载体和显影剂进料构件的接触区域中除去显影剂载体上的残余显影剂，然后将新显影剂施加到 开发商容器到接近区域附近的开发商承运人 显影剂载体和显影剂进料构件的触觉起始区域。

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：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：US06417876B1

公开(公告)日：2002-07-09

申请号：US09590639

申请日：2000-06-08

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

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

IPC分类号： G03G1500

CPC分类号： H04N1/40037

摘要： A control unit of an image forming apparatus for controlling exposure energy includes a reference image storage unit storing a plurality of reference images, an image recognition unit comparing image information consisting of a plurality of pieces of pixel information with data stored in the reference image storage unit, an exposure energy density storage unit storing an exposure energy density for each reference image stored in the reference image storage unit, an exposure energy density determination unit based on data from the image recognition unit and data in the exposure energy density storage unit an exposure energy density to be applied to a dot position corresponding to each piece of the pixel information, and a laser drive driving a laser of an exposure unit based on data from the exposure energy density determination uni. Accordingly, the image forming apparatus can be provided which exhibits an excellent image reproducibility for images with various dot densities.

摘要翻译： 用于控制曝光能量的图像形成装置的控制单元包括存储多个参考图像的参考图像存储单元，图像识别单元将由多个像素信息组成的图像信息与存储在参考图像存储单元中的数据进行比较 曝光能量密度存储单元，其存储参考图像存储单元中存储的每个参考图像的曝光能量密度;基于来自图像识别单元的数据和曝光能量密度存储单元中的数据的曝光能量密度确定单元，曝光能量 密度被施加到与每个像素信息相对应的点位置，以及激光驱动器，其基于来自曝光能量密度确定单元的数据驱动曝光单元的激光。 因此，可以提供对于具有各种点密度的图像具有优异的图像再现性的图像形成装置。

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：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。