公开(公告)号：US20030207193A1

公开(公告)日：2003-11-06

申请号：US10402078

申请日：2003-03-27

申请人： Xerox Corporation

发明人： Robert J. Meyer ,  Dale R. Mashtare ,  John F. Knapp

IPC分类号： G03G013/09

CPC分类号： G03G9/107

摘要： A method for developing an electrostatic image including contacting the image with at least one magnetic brush including (a) a rotating magnetic core of a preselected magnetic field strength, (b) an outer nonmagnetic shell, (c) An electrographic, two-component dry developer composition comprising charged toner particles and oppositely charged binder-free carrier particles which (a) include: an alloy of a soft magnetic material exhibiting a coercivity of at least 300 gauss when magnetically saturated, exhibit an induced magnetic moment of less than 20 EMU/gm of carrier when in an applied field of 1000 gauss and (b) a hard magnetic material exhibiting a coercivity of at least 300 gauss when magnetically saturated, exhibit an induced magnetic moment of at least 20 EMU/gm of carrier when in an applied field of 1000 gauss and which magnetic moment is sufficient to prevent the carrier from transferring to the electrostatic image, the toner and carrier particles in the developer having a triboelectric force of attraction which is greater than the magnetic force of attraction between carrier particles in the developer.

摘要翻译： 一种用于显影静电图像的方法，包括使图像与至少一个磁刷接触，所述至少一个磁刷包括（a）预选磁场强度的旋转磁芯，（b）外部非磁性壳，（c）电摄影，双组分干燥 显影剂组合物，其包含带电荷的调色剂颗粒和带相反电荷的无粘合剂载体颗粒，其（a）包括：当磁饱和时表现出至少300高斯的矫顽力的软磁性材料的合金表现出小于20 EMU / 当在1000高斯的施加场中，和（b）在磁饱和时表现出至少300高斯的矫顽力的硬磁性材料，当在施加的场中表现出至少20 EMU / gm的载体的感应磁矩 1000高斯，并且哪个磁矩足以防止载体转移到静电图像上，显影剂中的调色剂和载体颗粒具有部分 吸引力大于显影剂中载体颗粒之间的吸引力的磁力。

公开(公告)号：US20030044713A1

公开(公告)日：2003-03-06

申请号：US10091498

申请日：2002-03-07

发明人： Kimitoshi Yamaguchi ,  Akihiro Kotsugai

IPC分类号： G03G013/09 ,  G03G015/09

CPC分类号： G03G13/09 ,  G03G9/10

摘要： A method of developing a latent electrostatic image using a two-component developer system, having a ratio (VrNVp) ranges 1.2

摘要翻译： 使用双组分显影剂系统显影静电潜像的方法，其具有的比例（VrNVp）为1.2 <（Vr / Vp）<3，其中（Vp）为线速度（Vp）[m / sec] 感光构件，并且（Vr）是显影套筒的线速度（Vr）[m / sec]，并施加偏压直流电压（VB）[伏特]，其中： 作为感光构件和显影套筒之间最近点处的距离的显影间隙（Gp）[cm]小于或等于0.6mm，比率（rhop / rhoa）满足表达式（rhop / rhoa）<0.7 其中rhop是感光构件和显影套筒之间最近点处的显影剂的密度[g / cm 3]，其由等式rhop = J / Gp表示，其中J是开发者的量（rhop 在表述中也表示为“显影剂的密度”或“GP剂的密度”），并且rhoa是显影剂的体积密度[g / cm 3]，使用电子照相用载体，载体由 重量平均粒径（Dv）为25μm〜45μm的载体芯粒子，小于44μm的粒子为70重量％以上，小于22μm的粒子小于或等于70wt％ 等于7重量％，重均粒径（Dv）之间的比（Dv / Dp） d数均粒径（Dp）满足表达式1 <=（Dv / Dp）<= 1.30，核心颗粒通过涂布形式与树脂材料一起使用。 提供了用于消除从显影方向（显影套筒的行进速度快于静电潜像的行进速度）导出的显影图像中的不期望的伪影的方法。

公开(公告)号：US20040126145A1

公开(公告)日：2004-07-01

申请号：US10666244

申请日：2003-09-22

发明人： Hisao Kurosu

IPC分类号： G03G015/09 ,  G03G013/09

CPC分类号： G03G15/09

摘要： In a magnet brush type developing method of the present invention, at least one position where brush chains formed by magnetic carrier grains rise exists in a portion where an electric field formed between a facing zone where an image carrier and a developer carrier face each other has a strength E (V/m) expressed as:Enullnull(AnullnullTnulldnullR)/(3B1/2nullnull0nullVSL)nullwhere B is representative of TcnullD3nullnullc/(100nullTc) nulld3nullnullT, A denotes a mean amount of charge (nullC/kg) deposited on toner grains, Tc denotes the content of the toner grains (wt %), d denotes the mean grain size (m) of the toner grains, D denotes the mean grain size (m) of the carrier grains, nullT denotes the specific weight (kg/m3) of the toner grains, nullc denotes the specific gravity (kg/m3) of the carrier grains, nullo is 8.854null10null12 (F/m), R denotes the diameter of the developer carrier, and VSL denotes the linear velocity of the carrier grains.

摘要翻译： 在本发明的磁刷式显影方法中，在图像载体和显影剂载体相对的面对区域之间形成的电场的部分中存在至少一个由磁性载体晶粒形成的刷链起始位置的位置， 强度E（V / m）表示为：E> = |（A.rhoT.dR）/（3B 1/2 1/2 .VSL）| 其中B代表Tc.D 3 rhoc /（100-Tc）.d 3 .rhoT，A表示沉积在调色剂颗粒上的平均电荷量（μC/ kg），Tc表示调色剂的含量 颗粒（重量％），d表示调色剂颗粒的平均粒径（μm），D表示载体颗粒的平均粒径（μm），rhoT表示调色剂的比重（kg / m 3） 颗粒，rhoc表示载体颗粒的比重（kg / m 3），epsilono为8.854×10 -12（F / m），R表示显影剂载体的直径，VSL表示 载体晶粒。

公开(公告)号：US20030013032A1

公开(公告)日：2003-01-16

申请号：US10138840

申请日：2002-05-03

发明人： Robert D. Fields ,  Thomas J. Foster ,  Paul L. Nielsen ,  Thomas A. Jadwin ,  Dinesh Tyagi

IPC分类号： G03G013/09 ,  G03G015/09

CPC分类号： G03G9/1136 ,  G03G9/09708 ,  G03G9/09725 ,  G03G9/09733 ,  G03G9/1075 ,  G03G9/1133 ,  G03G9/1134 ,  G03G9/1135 ,  G03G13/09 ,  G03G13/20

摘要： Development systems and methods for developing using toner are disclosed. The present invention further discloses developers used in development systems. With respect to the development system, a development system is disclosed which includes a supply of dry developer mixture which contains toner particles and hard magnetic carrier particles. The development system further includes a non-magnetic, cylindrical shell for transporting the developer between the supply and the development zone, wherein the shell can be rotatable or stationary. A rotating magnetic core of a pre-selected magnetic field strength and means for rotating at least the magnetic core to provide for the transport of the toner particles from the shell to an electrostatic image also provided as part of the development system. The development system of the present invention further includes a fuser roll which is coated with a silicone rubber or other low surface energy elastomer or resin. The fuser roll is preferably in a pressure contact arrangement with a backup or pressure roll. The images resulting from the development system of the present invention have an excellent combination of properties, in particular, the prints resulting from the development process of the present invention have improved image quality in combination with excellent fusing quality. A method for developing electrostatic images with toner is further disclosed, for example, involving the above-described development system.

摘要翻译： 公开了使用调色剂显影的显影系统和方法。 本发明还公开了开发系统中使用的开发者。 关于显影系统，公开了一种显影系统，其包括供给包含调色剂颗粒和硬磁性载体颗粒的干显影剂混合物。 显影系统还包括用于在供应和显影区域之间输送显影剂的非磁性圆柱形壳体，其中壳体可旋转或静止。 具有预选磁场强度的旋转磁芯和用于至少旋转磁芯以提供将调色剂颗粒从外壳传送到静电图像的装置，还提供作为显影系统的一部分。 本发明的显影系统还包括涂覆有硅橡胶或其它低表面能弹性体或树脂的定影辊。 定影辊优选地具有与备用或压力辊的压力接触装置。 由本发明的显影系统产生的图像具有优异的性能组合，特别是由本发明的显影过程产生的印刷品具有改进的图像质量以及优异的定影质量。 例如涉及上述显影系统的方法进一步公开了一种利用调色剂显影静电图像的方法。

公开(公告)号：US20020127488A1

公开(公告)日：2002-09-12

申请号：US10025550

申请日：2001-12-26

发明人： Katsuhiko Suzuki ,  Masami Ishikawa ,  Tsuneaki Kawanishi ,  Teruaki Mitsuya ,  Hisao Okada ,  Masayoshi Ishii

IPC分类号： G03G013/16 ,  G03G013/09 ,  G03G015/09

CPC分类号： G03G13/09 ,  G03G2215/0609 ,  G03G2215/0648

摘要： In an image forming method, when viewed from the moving direction of a photosensitive body 1, there is disposed, on the upstream side, a first developing roller 61 opposed to and adjacent to the photosensitive body 1 and rotatable in the opposite direction to the photosensitive body 1, while the peripheral speed ratio of the roller 61 to the photosensitive body 1 ranges from 0.8 to 2.0; on the downstream side of the roller 61, there is disposed a second developing roller 62 rotatable in the same direction to the photosensitive body 1, while the peripheral speed ratio of the roller 62 to the photosensitive body 1 ranges from 1.05 to 2.0; and the shape coefficient SF1 of the toners of two-component developing agent ranges from 120 to 170, while the shape coefficient SF2 ranges from 110 to 130.

摘要翻译： 在图像形成方法中，当从感光体1的移动方向观察时，在上游侧设置有与感光体1相对并邻近感光体1并可沿与感光体相反的方向旋转的第一显影辊61 而辊61与感光体1的圆周速度比在0.8至2.0的范围内; 在辊61的下游侧，设置有与感光体1相同的方向旋转的第二显影辊62，而辊62与感光体1的圆周速度比范围为1.05〜2.0; 双成分显影剂的调色剂的形状系数SF1为120〜170，形状系数SF2为110〜130。

公开(公告)号：US20040053154A1

公开(公告)日：2004-03-18

申请号：US10607014

申请日：2003-06-27

发明人： Masami Tomita ,  Tadao Takikawa ,  Tomoyuki Ichikawa ,  Fumihiro Sasaki ,  Toshiki Nanya ,  Hiroto Higuchi ,  Shigeru Emoto ,  Shinichiro Yagi ,  Naohito Shimota ,  Maiko Kondo

IPC分类号： G03G009/08 ,  G03G013/09

CPC分类号： G03G9/0821 ,  G03G9/0819 ,  G03G9/0827 ,  G03G9/08755 ,  G03G9/08795 ,  G03G9/08797 ,  G03G9/09725

摘要： A toner for developing a latent electrostatic image including a base of toner particle which contains a binder resin and a coloring agent, and an external additive. Herein, a plurality of the base of toner particle has a volume average particle diameter (Dv) of 3 nullm to 7 nullm, a ratio (Dv/Dn) of the volume average particle diameter (Dv) to a number average particle diameter (Dn) is 1.01 to 1.25, a plurality of the base of toner particle contains 15% by number or less of the base of toner particle having a particle diameter of 0.6 nullm to 2.0 nullm, a plurality of the base of toner particle has a circularity of 0.930 to 0.990 on average, the binder resin contains a modified polyester resin, and the toner contains 0.3 parts by weight to 5.0 parts by weight of the external additive, relative to 100 parts by weight of the base of toner particle.

摘要翻译： 一种用于显影静电潜像的调色剂，包括含有粘合剂树脂和着色剂的调色剂颗粒的底部和外部添加剂。 这里，多个调色剂颗粒基体的体积平均粒径（Dv）为3μm〜7μm，体积平均粒径（Dv）与数均粒径（Dn）的比（Dv / Dn） ）为1.01〜1.25，多个调色剂粒子的基体含有15个数量以下的调色剂颗粒的基体，其粒径为0.6〜2.0μm，多个调色剂颗粒的基体的圆形度为 0.930〜0.990，粘合剂树脂含有改性聚酯树脂，相对于调色剂颗粒的100重量份，调色剂含有0.3重量份至5.0重量份的外部添加剂。

公开(公告)号：US20040002015A1

公开(公告)日：2004-01-01

申请号：US10388563

申请日：2003-03-14

发明人： Yoshio Ozawa ,  Shoichi Sakata ,  Toshinori Nishimura

IPC分类号： G03G013/09 ,  G03G015/09

CPC分类号： G03G15/0907

摘要： To avoid developing ghost and selective developing without complicating a developing apparatus and to supply surly charged toner to a developing roll while unevenness of images is not generated to obtain stable images for a long time even when continuous printing, a method for developing in a hybrid developing apparatus is provided, which is characterized in that a data amount of each image, which an image forming apparatus prints and a number of paper sheets passed are detected and that an interval of the action of recovering and exchanging a toner layer on the developing roll to the magnetic roll after printing (between paper sheets) is variably set in accordance with a printing coefficient determined by the data amount and the number of paper sheets passed and further, a method for developing in a color tandem-type image forming apparatus provided with a plurality of the hybrid developing apparatuses for all different colors of toner, which are disposed along the moving direction of a transfer medium of images is provided, wherein after toner layers on the developing rolls of the all developing apparatuses are peeled off toward the magnetic rolls after developing, a thickness of the toner layer of the each developing apparatus is variably controlled at the beginning of developing in accordance with the image consistency of the developing apparatus having a highest image consistency among image data of toner colors.

摘要翻译： 为了避免在不使显影装置复杂化的情况下发生重影和选择性显影，并且即使在连续印刷时也不产生不均匀图像以获得稳定图像的显影辊中的充满电的调色剂，用于在混合显影中发展的方法 提供了一种装置，其特征在于，检测图像形成装置打印的每张图像的数据量和通过的纸张数量，并且将显影辊上的调色剂层回收和更换的动作的间隔设置为 根据通过数据量和纸张数量确定的打印系数，打印后（在纸张之间）的磁辊可变地设定，并且还提供了一种彩色串列型图像形成装置中的显影方法， 多个用于所有不同颜色的调色剂的混合显影装置，其沿着移动方向设置 提供了一种图像转印介质，其中在显影之后，在显影装置的显影辊上的调色剂层之后朝向磁辊剥离，每个显影装置的调色剂层的厚度在显影开始时被可变地控制 根据调色剂图像数据之间具有最高图像一致性的显影装置的图像一致性。

公开(公告)号：US20020146632A1

公开(公告)日：2002-10-10

申请号：US10098591

申请日：2002-03-18

发明人： Hisao Kurosu ,  Shigekazu Enoki ,  Chikara Imai

IPC分类号： G03G013/09

CPC分类号： G03G13/09

摘要： A developing method of the present invention develops a latent image formed on an image carrier with a two-ingredient type developer, which consists of toner grains and magnetic carrier grains for supporting the toner grains. A developer carrier faces the image carrier and accommodates magnetic field forming means therein for causing the developer to deposit on the developer carrier. The developer is conveyed to a developing zone formed between the image carrier and the developer carrier. The latent image is developed by a magnet brush including free toner grains, which part from brush chains formed by the carrier grains when the brush chains start rising on the developer carrier in the developing zone. The method insures a high-density, smooth solid image. A device for practicing the method is also disclosed.

摘要翻译： 本发明的显影方法利用由调色剂颗粒和用于支撑调色剂颗粒的磁性载体颗粒组成的双成分型显影剂来形成在图像载体上形成的潜像。 显影剂载体面对图像载体并且容纳其中的磁场形成装置，以使显影剂沉积在显影剂载体上。 将显影剂输送到形成在图像载体和显影剂载体之间的显影区域。 潜像通过包括自由调色剂颗粒的磁刷显影，该磁刷是当显影区上的显影剂载体上的刷链开始上升时由载体颗粒形成的刷链的部分。 该方法确保了高密度，平滑的实体图像。 还公开了一种用于实施该方法的装置。

公开(公告)号：US20040115552A1

公开(公告)日：2004-06-17

申请号：US10322041

申请日：2002-12-17

申请人： Xerox Corporation

发明人： Richard B. Lewis

IPC分类号： G03G009/113 ,  G03G015/09 ,  G03G013/09

CPC分类号： G03G9/1131 ,  G03G9/1075 ,  G03G9/113 ,  G03G15/09

摘要： An apparatus and method for non-interactive, dry powder development of electrostatic images includes an image bearing member bearing an electrostatic image; two component developer comprising toner and permanently magnetized thickly coated carrier beads, the coated carrier beads having magnetizable core radius r, average radius a, and magnetization Mb, with the ratio r/a being given as K; a developer transporting member having a thickness t for transporting a developer layer of the two component developer, wherein the layer is spaced close to and out of contact with the image bearing member, a multipole magnet member disposed in close proximity to the transporting member and moving relative to it so as to sweep poles across its surface, the magnet member having a periodic magnetization of spatial frequency k and a peak magnetization M0 wherein Mb, t, k, and M0, are chosen such that Mb is sufficiently large to prevent the escape of developer, a quantity C in the equation 1 C = 2.2 null ( M 0 M b ) null 1 K 3 null null - k null null null t null k null null null a is greater than about null, and the ratio K is a quantity less than about null, and preferably less than about null, so as to weaken bead-bead interaction and thus enhance the desired provision of a compressed developer layer.

公开(公告)号：US20040096243A1

公开(公告)日：2004-05-20

申请号：US10602112

申请日：2003-06-23

发明人： Jan Bares ,  James H. Anderson ,  Matthew Ezenyilimba ,  William K. Goebel

IPC分类号： G03G015/09 ,  G03G013/09

CPC分类号： G03G15/09 ,  G03G9/0804 ,  G03G9/0819 ,  G03G9/08711 ,  G03G9/08755 ,  G03G9/08782 ,  G03G9/09708 ,  G03G9/09725 ,  G03G9/09733 ,  G03G9/107 ,  G03G2215/0609

摘要： Development systems and methods for developing using chemically prepared toners are disclosed. The present invention further discloses developers used in development systems. The use of chemically prepared toners with hard magnetic carrier particles with a non-magnetic, cylindrical shell for transporting developers provides excellent benefits with respect to image quality by reducing granularity and by providing a typically constant, stable developer life as shown by the consistent level of charge to mass over time during operation.

摘要翻译： 公开了使用化学制备的调色剂开发的开发系统和方法。 本发明还公开了开发系统中使用的开发者。 使用具有硬磁性载体颗粒的具有非磁性圆柱形壳体的化学制备的调色剂用于运输显影剂通过降低颗粒度和通过提供通常恒定的稳定的显影剂寿命来提供关于图像质量的极好的益处，如一致的 在运行期间随着时间的推移充电。