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1. 发明授权

US6087056A Developing method by flying toner 有权
标题翻译：开发方法通过飞行墨粉
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。

2. 发明授权

US06433803B1 Exposure apparatus for image formation and image formation method 有权
公开(公告)号：US06433803B1
公开(公告)日：2002-08-13
申请号：US09826199
申请日：2001-04-04
申请人： Yoshinori Mutou , Tetsuro Toyoshima , Tadashi Iwamatsu , Nobuyuki Azuma , Yoshinori Nakajima
发明人： Yoshinori Mutou , Tetsuro Toyoshima , Tadashi Iwamatsu , Nobuyuki Azuma , Yoshinori Nakajima
IPC分类号： B41J2385
摘要： An exposure apparatus for image formation uses power control means provided to a laser driver for controlling exposure energy and accordingly forming an image. Specifically, exposure energy is varied depending on an isolated-dot pattern and an isolated-line pattern by changing the pulse height (drive power) of a drive pulse for each dot. Both of the isolated-line and isolated-dot patterns of a high resolution can thus be reproduced with a high image quality without increase of cost due to requirements for accuracy in processing and positioning of a lens and without decrease of life of a photoreceptor due to a decreased thickness of its photosensitive layer.

3. 发明授权

US06417876B1 Apparatus and method for forming image with high image resolution from images having various dot densities 失效
标题翻译：从具有各种点密度的图像形成具有高图像分辨率的图像的装置和方法
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。

4. 发明授权

US06496210B2 Electrophotographic imaging apparatus 失效
公开(公告)号：US06496210B2
公开(公告)日：2002-12-17
申请号：US09977030
申请日：2001-10-15
申请人： Tetsuro Toyoshima , Tadashi Iwamatsu , Nobuyuki Azuma , Yoshinori Mutou
发明人： Tetsuro Toyoshima , Tadashi Iwamatsu , Nobuyuki Azuma , Yoshinori Mutou
IPC分类号： G03G1500
CPC分类号： H04N1/29
摘要： In a digital electrophotographic imaging process in which a latent electrostatic image is written to a charged photoreceptor using an exposure beam diameter Ds larger than pixel pitch Dp and the image is visualized by development, an unsaturated region of photo-induced discharge characteristics of the photoreceptor is used for an image portion of isolated 1 line, and a saturated region of the photo-induced discharge characteristics of the photoreceptor or gamma characteristics of development is used for an image portion for n lines (n≧2).

5. 发明授权

US06323888B1 Image forming apparatus 有权
标题翻译：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。

6. 发明授权

US06298206B1 Electrophotographic developing apparatus 失效
标题翻译：电子照相显影装置
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。

7. 发明授权

US06714225B2 Image formation apparatus and image formation method 失效
标题翻译：图像形成装置和图像形成方法
公开(公告)号：US06714225B2
公开(公告)日：2004-03-30
申请号：US10213427
申请日：2002-08-06
申请人： Yoshinori Mutou , Tetsuro Toyoshima , Tadashi Iwamatsu , Nobuyuki Azuma , Yoshinori Nakajima
发明人： Yoshinori Mutou , Tetsuro Toyoshima , Tadashi Iwamatsu , Nobuyuki Azuma , Yoshinori Nakajima
IPC分类号： B04J2385
CPC分类号： H04N1/4055
摘要： When a halftone image region that is below a predetermined density is to be reproduced, a processing unit controlling an exposure unit selects an exposure pattern that can represent a record dot diameter within a range based on a predetermined rule from exposure patterns prepared in advance. Accordingly, graininess is suppressed. When there are a plurality of exposure patterns that can be applied, the exposure pattern with the lowest number of dots present per 1 inch is employed. Accordingly, a halftone image is formed with the image reproducibility improved.
摘要翻译：当要再现低于预定浓度的半色调图像区域时，控制曝光单元的处理单元基于预先规定的曝光图案，基于预定规则从一个范围内选择可以表示记录点直径的曝光图案。因此，抑制了颗粒性。当存在可以应用的多个曝光图案时，采用每1英寸存在最少点数的曝光图案。因此，形成具有提高图像再现性的半色调图像。

8. 发明授权

US06239824B1 Apparatus and method for forming image with superior image reproducibility 有权
标题翻译：用于形成具有优异图像再现性的图像的装置和方法
公开(公告)号：US06239824B1
公开(公告)日：2001-05-29
申请号：US09591607
申请日：2000-06-09
申请人： Yoshinori Mutou , Tetsuro Toyoshima , Tadashi Iwamatsu , Nobuyuki Azuma , Yoshinori Nakajima
发明人： Yoshinori Mutou , Tetsuro Toyoshima , Tadashi Iwamatsu , Nobuyuki Azuma , Yoshinori Nakajima
IPC分类号： G03G1504
CPC分类号： H04N1/40037
摘要： An exposure energy control unit of an image forming apparatus controls exposure energy density Edot (&mgr;J/cm2) to be applied to an isolated one-dot pattern of image information to satisfy a relation −0.11P+6.4≦Edot/Eline≦−0.2P+10.7 where Eline (&mgr;J/cm2) represents exposure energy density applied to a line pattern of the image information having lines on every second lines and P (&mgr;m) represents dot pitch. Accordingly, image reproducibility of both of a periodic line pattern and an isolated dot pattern can be enhanced without decreasing the film thickness of a photoreceptor even if the resolution is high.
摘要翻译：图像形成装置的曝光能量控制单元控制曝光能量密度Edot（μJ/ cm 2），以应用于孤立的单点图案的图像信息，以满足其中Eline（μJ/ cm 2）表示施加到在第二行上具有线的图像信息的线图案和P（母）表示点间距。因此，即使分辨率高，也可以在不降低感光体的膜厚的情况下增强周期性线图案和孤立点图案的图像再现性。

9. 发明授权

US5960239A Developing device with developer charging and application regulating member 失效
标题翻译：用开发者充电和应用调节元件开发设备
公开(公告)号：US5960239A
公开(公告)日：1999-09-28
申请号：US959615
申请日：1997-10-28
申请人： Tetsuro Toyoshima , Nobuyuki Azuma , Takayuki Yamanaka
发明人： Tetsuro Toyoshima , Nobuyuki Azuma , Takayuki Yamanaka
IPC分类号： G03G15/08 , G03G15/06
CPC分类号： G03G15/0812
摘要： A developing device has a development roller for carrying toner on a surface thereof, a toner supply roller for supplying the toner to the development roller, a flat spring which comes into contact with the development roller, charges the toner to be supplied to the development roller and applies the toner to the development roller while regulating the thickness of a layer of the toner. The flat spring has a plurality of flat-plate parts including a contact flat-plate part which comes into contact with the development roller, and a curved part which connects the flat-plate parts to each other. In this structure, by arbitrarily selecting dimensional parameters of the flat spring, it is possible to easily obtain various flat springs having different properties. Therefore, for example, the stress to the toner and the stress to the members can be easily reduced simultaneously with a design of the flat spring. Moreover, it is possible to improve the uniformity of the toner layer thickness in the axis direction of the development roller and the uniformity of charging of the toner.
摘要翻译：显影装置具有用于在其表面上承载调色剂的显影辊，用于向显影辊供应调色剂的调色剂供应辊，与显影辊接触的平板弹簧，将要供应到显影辊的调色剂并且在调节调色剂层的厚度的同时将调色剂施加到显影辊。平板弹簧具有多个平板部件，包括与显影辊接触的接触平板部分和将平板部件彼此连接的弯曲部分。在这种结构中，通过任意选择板簧的尺寸参数，可以容易地获得具有不同特性的各种板簧。因此，例如，对于调色剂的应力和对构件的应力可以与板簧的设计同时容易地减小。此外，可以提高显影辊的轴向上的调色剂层厚度的均匀性和调色剂的充电均匀性。

10. 发明授权

US6154627A Developing apparatus using one-component toner 有权
标题翻译：显影装置使用单组分调色剂
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。

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