公开(公告)号：US5395724A

公开(公告)日：1995-03-07

申请号：US13132

申请日：1993-02-03

申请人： Ian D. Morrison ,  Bing R. Hsieh ,  Jerry H. Taylor

发明人： Ian D. Morrison ,  Bing R. Hsieh ,  Jerry H. Taylor

IPC分类号： G03G9/12 ,  G03G9/00

CPC分类号： G03G9/00 ,  G03G9/12

摘要： Disclosed is a liquid developer comprising a colorant and a substantial amount of a curable liquid vehicle having a viscosity of no more than about 500 centipoise and a resistivity of no less than about 10.sup.8 ohm-cm. One embodiment of the invention is directed to an electrophoretic liquid developer comprising a substantial amount of a curable liquid vehicle having a viscosity of no more than about 20 centipoise and a resistivity of no less than about 5.times.10.sup.9 ohm-cm, a charge control agent, and colored particles capable of becoming charged and migrating through the liquid vehicle to develop an electrostatic latent image. Another embodiment of the invention is directed to a polarizable liquid developer comprising a colorant and a substantial amount of a curable liquid vehicle having a viscosity of from about 25 to about 500 centipoise and a resistivity of from about 10.sup.8 to about 10.sup.11 ohm-cm. Yet another embodiment of the invention is directed to a photoelectrophoretic liquid developer comprising a substantial amount of a curable liquid vehicle having a viscosity of no more than about 20 centipoise and a resistivity of no less than about 5.times.10.sup.9 ohm-cm and photosensitive colored particles. A specific embodiment of the invention is directed to a liquid developer comprising a colorant, a substantial amount of a curable liquid vehicle having a viscosity of no more than about 500 centipoise and a resistivity of no less than about 10.sup.8 ohm-cm, and solid particles containing an initiator substantially insoluble in the liquid vehicle and capable, upon activation, of initiating polymerization of the curable liquid vehicle. In one embodiment, the colorant comprises pigment particles and the initiator is contained on the surfaces of the pigment particles. In another embodiment, the developer contains polymeric particles and the initiator is contained on the surfaces of the polymeric particles. In yet another embodiment, the colorant comprises toner particles which comprise a pigment and a polymer, and the initiator is contained on the surfaces of the toner particles. In still another embodiment, the initiator is contained on the surfaces of solid particles such as silicas, clays, or the like. The initiator can also be contained within the solid particles.

公开(公告)号：US5387489A

公开(公告)日：1995-02-07

申请号：US98150

申请日：1993-07-28

申请人： Timothy J. Fuller ,  James R. Larson ,  Frank J. Bonsignore

发明人： Timothy J. Fuller ,  James R. Larson ,  Frank J. Bonsignore

IPC分类号： G03G9/08 ,  G03G9/12 ,  G03G9/13 ,  G03G9/135

CPC分类号： G03G9/0815 ,  G03G9/0804 ,  G03G9/12

摘要： Disclosed is a process for preparing a liquid or dry electrophotographic developer comprising: (a) forming a melt mixture comprised of a polymer resin or resins, a colorant, a charge director, and a nonaqueous solvent to obtain a first suspension of colored polymeric particles with a volume average diameter of from about 5 to about 100 microns; and (b) homogenizing with a dairy piston homogenizer said first suspension under pressure of from about 100 to about 500 Bars to obtain a second suspension containing colored polymeric particles with a volume average diameter of from about 0.1 to about 5 microns.

摘要翻译： 公开了一种制备液体或干电子照相显影剂的方法，其包括：（a）形成由聚合物树脂或树脂，着色剂，电荷导向剂和非水溶剂组成的熔融混合物，以获得有色聚合物颗粒的第一悬浮液， 体积平均直径为约5至约100微米; 和（b）在乳化活塞均化器中均匀化所述第一悬浮液，其压力为约100至约500巴，以获得含有体积平均直径为约0.1至约5微米的着色聚合物颗粒的第二悬浮液。

公开(公告)号：US5364726A

公开(公告)日：1994-11-15

申请号：US17055

申请日：1993-02-02

申请人： Ian D. Morrison ,  Bing R. Hsieh ,  Jerry H. Taylor

发明人： Ian D. Morrison ,  Bing R. Hsieh ,  Jerry H. Taylor

IPC分类号： G03G9/12 ,  G03G9/125 ,  G03G9/13 ,  G03G17/04

CPC分类号： G03G17/04 ,  G03G9/12 ,  G03G9/125 ,  G03G9/131

摘要： Disclosed is a liquid developer comprising a colorant and a substantial amount of a curable liquid vehicle having a viscosity of no more than about 500 centipoise and a resistivity of no less than about 10.sub.8 ohm-cm. One embodiment of the invention is directed to an electrophoretic liquid developer comprising a substantial amount of a curable liquid vehicle having a viscosity of no more than about 20 centipoise and a resistivity of no less than about 5.times.10.sup.9 ohm-cm, a charge control agent, and colored particles capable of becoming charged and migrating through the liquid vehicle to develop an electrostatic latent image. Another embodiment of the invention is directed to a polarizable liquid developer comprising a colorant and a substantial amount of a curable liquid vehicle having a viscosity of from about 25 to about 500 centipoise and a resistivity of from about 10.sup.8 to about 10.sup.11 ohm-cm. Yet another embodiment of the invention is directed to a photoelectrophoretic liquid developer comprising a substantial amount of a curable liquid vehicle having a viscosity of no more than about 20 centipoise and a resistivity of no less than about 5.times.10.sup.9 ohm-cm and photosensitive colored particles. A specific embodiment of the invention is directed to a liquid developer comprising a colorant, a substantial amount of a curable liquid vehicle having a viscosity of no more than about 500 centipoise and a resistivity of no less than about 10.sup.8 ohm-cm, and solid particles containing an initiator substantially insoluble in the liquid vehicle and capable, upon activation, of initiating polymerization of the curable liquid vehicle. In one embodiment, the colorant comprises pigment particles and the initiator is contained on the surfaces of the pigment particles. In another embodiment, the developer contains polymeric particles and the initiator is contained on the surfaces of the polymeric particles. In yet another embodiment, the colorant comprises toner particles which comprise a pigment and a polymer, and the initiator is contained on the surfaces of the toner particles. In still another embodiment, the initiator is contained on the surfaces of solid particles such as silicas, clays, or the like. The initiator can also be contained within the solid particles.

公开(公告)号：US5352557A

公开(公告)日：1994-10-04

申请号：US136757

申请日：1993-10-15

申请人： Hirotaka Matsuoka ,  Takako Kobayashi ,  Ken Hashimoto

发明人： Hirotaka Matsuoka ,  Takako Kobayashi ,  Ken Hashimoto

IPC分类号： G03G9/12 ,  G03G9/125

CPC分类号： G03G9/125

摘要： A liquid developer for use in electrostatic photography comprises toner particles, each containing a resin and a colorant dispersed in a carrier liquid. The carrier liquid comprises at least one ether compound derived from ethylene glycol or propylene group and represented by the following general formulaR.sub.1 --O(C.sub.n H.sub.2n O).sub.x R.sub.2wherein R.sub.1 and R.sub.2 may be the same or different and represent an alkyl group or an aryl group, n is an integer of 2 or 3, and x is an integer of 1 to 3. The ether compound is present in the carrier liquid in the range of from 5 to 100 wt %.

摘要翻译： 用于静电摄影的液体显影剂包括分散在载体液体中的各自含有树脂和着色剂的调色剂颗粒。 载体液体包含至少一种衍生自乙二醇或丙烯基团的醚化合物，由以下通式R 1 -O（C n H 2n O）x R 2表示，其中R 1和R 2可以相同或不同，表示烷基或芳基， n为2或3的整数，x为1〜3的整数。醚化合物以5〜100重量％的范围存在于载体液中。

公开(公告)号：US5326664A

公开(公告)日：1994-07-05

申请号：US779085

申请日：1991-10-18

申请人： Yuji Takagami ,  Sadao Kuriu ,  Koshiro Ikegami

发明人： Yuji Takagami ,  Sadao Kuriu ,  Koshiro Ikegami

IPC分类号： G03G9/12 ,  G03G13/10 ,  G03G13/28 ,  G03G13/26

CPC分类号： G03G13/10 ,  G03G13/28 ,  G03G9/12

摘要： The present invention provides a method for making an electrophotographic printing plate by reversal development which comprises uniformly charging the surface of an organic photoreceptor comprising an electrically conductive support and, provided thereon, an organic photoconductive compound bound with a resin binder, exposing the surface to a light image to form a static latent image corresponding to the light image on the surface of the organic photoreceptor and then, subjecting the static latent image to reversal development with an electrophotographic liquid developer containing charged toner particles, characterized in that the reversal development is carried out with the electrophotographic liquid developer having an electrodeposition potential set within the range of 0-80 V in absolute value.

摘要翻译： 本发明提供一种通过反转显影制造电子照相印版的方法，该方法包括使包含导电载体的有机感光体的表面均匀充电，并且在其上提供与树脂粘合剂结合的有机光电导性化合物，将该表面暴露于 光图像以形成对应于有机感光体表面上的光图像的静态潜像，然后用含有带电调色剂颗粒的电子照相液体显影剂使静电潜像反转显影，其特征在于进行反转显影 电子照相液体显影剂的电沉积电位设定在绝对值0-80V的范围内。

公开(公告)号：US5308729A

公开(公告)日：1994-05-03

申请号：US876673

申请日：1992-04-30

申请人： Bradley L. Beach ,  Carla M. Butler ,  Terence E. Franey ,  Ashok Murthy ,  Pramod K. Sharma ,  Ajay K. Suthar

发明人： Bradley L. Beach ,  Carla M. Butler ,  Terence E. Franey ,  Ashok Murthy ,  Pramod K. Sharma ,  Ajay K. Suthar

IPC分类号： G03G9/12 ,  G03G9/125 ,  G03G9/13 ,  G03G9/135

CPC分类号： G03G9/125 ,  G03G9/131 ,  G03G9/135 ,  G03G9/1355

摘要： A liquid toner having a mineral oil vehicle, a blend of Surlyn ionomeric resin and Nucrel resin, pigment and, as charge director, lecithin, N-methyl-2-pyrrolidone and calcium Petronate. The charge director optimizes speed of recovery of charge properties during continual use. The mineral oil does not vaporize well and is readily condensed, thus permitting use as a confined toner.

摘要翻译： 具有矿物油载体，Surlyn离聚物树脂和Nucrel树脂的混合物，颜料和作为电荷导向剂卵磷脂，N-甲基-2-吡咯烷酮和石油酸钙的液体调色剂。 电荷导向器在连续使用期间优化充电性能的恢复速度。 矿物油不能很好地蒸发并且容易冷凝，从而允许用作密闭的调色剂。

公开(公告)号：US5306590A

公开(公告)日：1994-04-26

申请号：US812678

申请日：1991-12-23

申请人： Thomas Felder

发明人： Thomas Felder

IPC分类号： G03G9/12 ,  G03G9/13 ,  G03G9/125

CPC分类号： G03G9/12 ,  G03G9/132

摘要： A high solids replenishable electrostatic liquid developer concentrate includes toner particles containing a carboxyl terminated polyester resin and a pigment and a liquid toner dispensant. The solids content of the concentrate is above about 50%. A method for producing the concentrate includes the steps of blending particles containing a carboxyl terminated polyester and a pigment with a liquid toner dispersants to form a toner dispersant mixture and to increase the solids content of the toner dispersant mixture to more than about 90% solids. Toner solids in a liquid electrostatic developer are replenished by adding the toner particles to a toner solids depleted liquid electrostatic developer in a liquid electrostatographic printing machine.

摘要翻译： 高固体可补充静电液体显影剂浓缩物包括含有羧基封端的聚酯树脂和颜料和液体调色剂分配器的调色剂颗粒。 浓缩物的固体含量高于约50％。 用于生产浓缩物的方法包括以下步骤：将含有羧基封端的聚酯和颜料的颗粒与液体调色剂分散剂混合以形成调色剂分散剂混合物，并将调色剂分散剂混合物的固体含量增加至超过约90％固体。 在液体静电显影剂中的调色剂固体通过将调色剂颗粒添加到液体静电印刷机中的调色剂固体耗尽液体静电显影剂来补充。

公开(公告)号：US5304451A

公开(公告)日：1994-04-19

申请号：US812660

申请日：1991-12-23

申请人： Thomas Felder ,  Ronald Koch ,  Lalit M. Bhalla

发明人： Thomas Felder ,  Ronald Koch ,  Lalit M. Bhalla

IPC分类号： G03G9/12 ,  G03G9/135 ,  G03G13/10 ,  G03G15/10

CPC分类号： G03G9/1355 ,  G03G13/10 ,  G03G15/104 ,  G03G9/12

摘要： A dry toner is added to a liquid carrier to replenish a liquid developer in an electrostatographic printing machine.

摘要翻译： 将干燥的调色剂加入到液体载体中以补充静电印刷机中的液体显影剂。

公开(公告)号：US5304449A

公开(公告)日：1994-04-19

申请号：US983192

申请日：1992-11-30

申请人： William H. Hollenbaugh, Jr.

发明人： William H. Hollenbaugh, Jr.

IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G9/12

CPC分类号： G03G9/08 ,  G03G9/09741 ,  G03G9/09758

摘要： Toner and developer compositions contain as charge enhancing components (1) alkyl pyridinium compounds or their hydrates and (2) tetrasubstituted ammonium salts. These toner and developer compositions show improved LC.sub.50 values and are environmentally friendly, and at the same time have very good electrical properties.

摘要翻译： 调色剂和显影剂组合物含有电荷增强组分（1）烷基吡啶鎓化合物或其水合物和（2）四取代铵盐。 这些调色剂和显影剂组合物显示出改进的LC50值，并且是环境友好的，并且同时具有非常好的电性能。

公开(公告)号：US5300390A

公开(公告)日：1994-04-05

申请号：US836574

申请日：1992-02-18

申请人： Benzion Landa ,  Yaacov Almog ,  Peretz Ben-Avraham ,  Moshe Levanon

发明人： Benzion Landa ,  Yaacov Almog ,  Peretz Ben-Avraham ,  Moshe Levanon

IPC分类号： G03G9/12 ,  G03G20060101 ,  G03G9/13 ,  G03G13/10 ,  G03G9/135

CPC分类号： G03G9/132

摘要： An improved liquid toner composition for developing latent electrostatic images comprising toner particles, a release agent and a nonpolar dispersant liquid. An agent causing an apparent increase in the cohesivity of the toner particles may be included in the toner composition, or such agent may be used independently of the release agent in the toner composition.

摘要翻译： 一种用于显影静电潜像的改进的液体调色剂组合物，包括调色剂颗粒，脱模剂和非极性分散剂液体。 调色剂组合物中可以包含导致调色剂颗粒的粘合性明显增加的试剂，或者可以独立于调色剂组合物中的脱模剂使用这种试剂。