公开(公告)号：US5604075A

公开(公告)日：1997-02-18

申请号：US554021

申请日：1995-11-06

申请人： James R. Larson ,  John F. Knapp ,  Frank J. Bonsignore

发明人： James R. Larson ,  John F. Knapp ,  Frank J. Bonsignore

IPC分类号： G03G9/12 ,  G03G9/13

CPC分类号： G03G9/12 ,  G03G9/13

摘要： A process for the preparation of liquid developers with reduced fines which comprises heating a liquid developer comprised of thermoplastic resin, pigment, charge adjuvant, liquid hydrocarbon, and optional charge director, wherein said heating is accomplished at about 5.degree. C. below the melting point of said thermoplastic resin, which heating enables said fines comprised of said developer components, and of a size diameter of from about 0.1 to about 0.4 micron to be reduced.

摘要翻译： 一种用于制备具有减少的细粉的液体显影剂的方法，其包括加热由热塑性树脂，颜料，电荷辅助剂，液态烃和任选的电荷导向剂组成的液体显影剂，其中所述加热在熔点以下约5℃ 的所述热塑性树脂，所述加热使得由所述显影剂组分构成的所述细粒和尺寸直径为约0.1至约0.4微米的所述细粉被还原。

公开(公告)号：US5574547A

公开(公告)日：1996-11-12

申请号：US473808

申请日：1995-06-07

申请人： Gary A. Denton ,  John F. Knapp ,  James R. Larson ,  Damodar M. Pai

发明人： Gary A. Denton ,  John F. Knapp ,  James R. Larson ,  Damodar M. Pai

IPC分类号： G03G15/10

CPC分类号： G03G15/104

摘要： In accordance with the present invention, there is provided in a liquid electrophotographic reproduction machine, a development unit for developing latent images on an image bearing member using liquid developer material. The development unit includes a housing defining a liquid developer material holding chamber, and a quantity of liquid developer material contained within the chamber. The quantity of developer material includes carrier liquid and charged toner particles dispersed within the quantity of carrier liquid. The development unit also includes a heating element located inside the quantity of developer material for heating the quantity of developer material. The quantity of developer material when heated has a desired elevated temperature within a range of 50 to 60 degrees centigrade for improved developability without causing toner particle agglomeration.

摘要翻译： 根据本发明，提供了一种液体电子照相再现机，用于使用液体显影剂材料在图像承载部件上显影潜像的显影单元。 显影单元包括限定液体显影剂材料保持室的壳体和容纳在室内的一定量的液体显影剂材料。 显影剂材料的量包括载体液体和分散在载体液体中的带电调色剂颗粒。 显影单元还包括位于显影剂材料量内的加热元件，用于加热显影剂材料的量。 加热时的显影剂材料的量在50至60摄氏度的范围内具有所需的升高温度，以提高显影性而不会引起调色剂颗粒聚集。

公开(公告)号：US5565299A

公开(公告)日：1996-10-15

申请号：US496751

申请日：1995-06-29

申请人： George A. Gibson ,  Peter G. Odell ,  James R. Larson

发明人： George A. Gibson ,  Peter G. Odell ,  James R. Larson

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

CPC分类号： G03G9/133 ,  G03G9/12 ,  G03G9/135

摘要： A process for the preparation of liquid developers comprising forming a heated dispersion of colorant, thermoplastic resin and carrier liquid, and charge control agent, followed by subsequent cooling of the resulting molten mixture under high shear.

摘要翻译： 制备液体显影剂的方法包括形成着色剂，热塑性树脂和载体液体的加热分散体和电荷控制剂，随后在高剪切下随后冷却所得熔融混合物。

公开(公告)号：US5484679A

公开(公告)日：1996-01-16

申请号：US231086

申请日：1994-04-22

申请人： John W. Spiewak ,  James R. Larson

发明人： John W. Spiewak ,  James R. Larson

IPC分类号： G03G9/13 ,  G03G9/135

CPC分类号： G03G9/133 ,  G03G9/1355 ,  Y10S430/105

摘要： A negatively charged liquid developer comprised of a nonpolar liquid, thermoplastic resin particles, a charge adjuvant, pigment, and an ABA polymer charge director wherein A and B represent the polymer segments.

摘要翻译： 由非极性液体，热塑性树脂颗粒，电荷辅助剂，颜料和ABA聚合物电荷导向剂组成的带负电荷的液体显影剂，其中A和B表示聚合物链段。

公开(公告)号：US5409796A

公开(公告)日：1995-04-25

申请号：US200988

申请日：1994-02-24

申请人： Timothy J. Fuller ,  James R. Larson ,  John W. Spiewak ,  David H. Pan ,  Ralph A. Mosher ,  Frank J. Bonsignore

发明人： Timothy J. Fuller ,  James R. Larson ,  John W. Spiewak ,  David H. Pan ,  Ralph A. Mosher ,  Frank J. Bonsignore

IPC分类号： G03G9/12 ,  C08L101/00 ,  C08L101/12 ,  G03G9/087 ,  G03G9/097 ,  G03G9/13 ,  G03G9/135

CPC分类号： G03G9/135 ,  G03G9/08704 ,  G03G9/08728 ,  G03G9/08791 ,  G03G9/0975 ,  G03G9/09783 ,  G03G9/131 ,  G03G9/1355 ,  Y10S430/105

摘要： A positively charged liquid developer comprised of thermoplastic resin particles, optional pigment, a charge director, and a charge adjuvant comprised of a polymer of an alkene and unsaturated acid derivative; and wherein the acid derivative contains pendant ammonium groups, and wherein the charge adjuvant is associated with or combined with said resin and said optional pigment.An example of a charge adjuvent copolymer compound containing alkylene and an unsaturated acid derivative such as acrylic acid and methacrylic acid containing pendent ammonium groups is represented, for example, by the following general formula ##STR1## wherein Z is oxygen or substituted nitrogen; Y is alkyl; R is hydrogen, alkyl or aryl; and X is an anion.

摘要翻译： 由热塑性树脂颗粒，任选的颜料，电荷导向剂和由烯烃和不饱和酸衍生物的聚合物组成的电荷佐剂的带正电荷的液体显影剂; 并且其中所述酸衍生物含有侧铵基团，并且其中所述电荷佐剂与所述树脂和所述任选颜料缔合或组合。 包含亚烷基和不饱和酸衍生物如含有侧铵基的丙烯酸和甲基丙烯酸的电荷辅助共聚物化合物的实例例如通过下列通式表示：其中Z是氧或取代的氮; Y是烷基; R是氢，烷基或芳基; X为阴离子。

公开(公告)号：US5308731A

公开(公告)日：1994-05-03

申请号：US9192

申请日：1993-01-25

申请人： James R. Larson ,  Bing R. Hsieh

发明人： James R. Larson ,  Bing R. Hsieh

IPC分类号： G03G9/097 ,  G03G9/12 ,  G03G9/135

CPC分类号： G03G9/135

摘要： A liquid developer comprised of a liquid, thermoplastic resin particles, a nonpolar liquid soluble charge director, and a charge adjuvant comprised of a metal hydroxycarboxylic acid.

摘要翻译： 由液体，热塑性树脂颗粒，非极性液体可溶性电荷引导剂和由金属羟基羧酸组成的电荷佐剂组成的液体显影剂。

公开(公告)号：US5155530A

公开(公告)日：1992-10-13

申请号：US815223

申请日：1991-12-31

申请人： James R. Larson ,  Jon R. Swanson

发明人： James R. Larson ,  Jon R. Swanson

IPC分类号： G03G15/00 ,  G03G15/06

CPC分类号： G03G15/5062 ,  G03G15/065 ,  G03G2215/00421 ,  G03G2215/00603 ,  G03G2215/00611 ,  G03G2215/00616 ,  G03G2215/00755 ,  G03G2215/00805

摘要： A method for controlling toner developed mass per unit area in an electrostatic or electrophotographic device includes the steps of: forming a toner image on a printing sheet; measuring a toner density of the toner image on the printing sheet; measuring a gloss of the toner image on the printing sheet; determining a toner developed mass per unit area for the measured gloss and measured toner density; and adjusting a voltage of a developement field in the electrostatic device in accordance with the determined toner developed mass per unit area. An apparatus for controlling toner developed mass per unit area in an electrostatic device includes: means for fusing a toner image onto a printing sheet; means for measuring a toner density of toner particles on the fused toner image; means for measuring a gloss of the fused toner image on the printing sheet; means for determining toner developed mass per unit area for the measured gloss and measured toner density; and means for adjusting a voltage of a development field in a range in which the toner developed mass per unit area and the voltage of the development field are related so that an increase in the voltage leads to an increase in the toner developed mass per unit area, and a decrease in the voltage leads to a decrease in the toner developed mass per unit area.

摘要翻译： 用于控制静电或电子照相设备中每单位面积调色剂质量的方法包括以下步骤：在印刷纸上形成调色剂图像; 测量所述打印纸上的调色剂图像的调色剂浓度; 测量所述打印纸上的调色剂图像的光泽度; 测定调色剂显影质量每单位面积的测量光泽度和测量的调色剂浓度; 以及根据每单位面积确定的调色剂显影质量来调节静电装置中的显影场的电压。 用于控制静电装置中每单位面积的调色剂显影量的装置包括：用于将调色剂图像定影到打印片材上的装置; 用于测量熔融调色剂图像上的调色剂颗粒的调色剂浓度的装置; 用于测量印刷纸上的熔融调色剂图像的光泽的装置; 用于测定调色剂显影质量的单位面积的测量光泽度和测量的调色剂密度的装置; 以及用于调节显影场的电压在单位面积中的显影质量和显影场的电压相关的范围内的显影场的电压的装置，使得电压的增加导致调色剂发展量每单位面积的增加 ，并且电压的降低导致每单位面积的调色剂显影质量的降低。

公开(公告)号：US5077171A

公开(公告)日：1991-12-31

申请号：US626884

申请日：1990-12-13

申请人： James R. Larson ,  Arnold R. Lee

发明人： James R. Larson ,  Arnold R. Lee

IPC分类号： G03G9/135

CPC分类号： G03G9/135

摘要： An electrostatic liquid developer having positive charging characteristics consisting essentially of:(A) a non-polar liquid having a Kauri-butanol value of less than 30, present in a major amount,(B) thermoplastic resin particles having an average by area particle size of less than 10 .mu.m,(C) a nonpolar liquid soluble ionic or zwitterionic charge director compound, and(D) a carbohydrate product of photosynthesis comprised of at least one saccharose present in (A) and/or dispersed in (B).The liquid developer is useful in copying, color proofing, digital color proofing, making lithographic printing plates, and resists.

摘要翻译： 具有正电荷特性的静电液体显影剂，其基本上由以下组成：（A）以大量存在的贝壳杉脂丁醇值小于30的非极性液体，（B）具有平均面积粒径的热塑性树脂颗粒 （C）非极性液体可溶性离子或两性离子电荷导向剂化合物，和（D）由（A）中存在的和/或分散在（B）中的至少一种蔗糖组成的光合作用的碳水化合物产物。 液体显影剂可用于复印，彩色打样，数字彩色打样，制作平版印刷版和抗蚀剂。

公开(公告)号：US5066821A

公开(公告)日：1991-11-19

申请号：US522283

申请日：1990-05-11

申请人： William A. Houle ,  James R. Larson ,  Kathryn A. Pearlstine

发明人： William A. Houle ,  James R. Larson ,  Kathryn A. Pearlstine

IPC分类号： G03G9/12 ,  G03G9/135

CPC分类号： G03G9/12 ,  G03G9/1355

摘要： A process for preparing an improved positive-working electrostatic liquid developer comprising(A) dispersing at an elevated temperature in a vessel a thermoplastic resin and a nonpolar liquid having a Kauri-butanol value of less than 30, while maintaining the temperature in the vessel at a temperature sufficient to plasticize and liquify the resin and below that at which the nonpolar liquid degrades and the resin decomposes,(B) cooling the dispersion, either(1) without stirring to form a gel or solid mass, followed by shredding the gel or solid mass and grinding by means of particulate media;(2) with stirring to form a viscous mixture and grinding by means of particulate media; or(3) while grinding by means of particulate media to prevent the formation of a gel or solid mass;(C) separating the dispersion of toner particles having an average particle size of less than 30 .mu.m from the particulate media, and(D) adding to the dispersion subsequent to Step (A) a nonpolar liquid soluble ionic or zwitterionic charge director compound mixed with an acid having a pKa of

公开(公告)号：US4709207A

公开(公告)日：1987-11-24

申请号：US763570

申请日：1985-08-08

申请人： James R. Larson

发明人： James R. Larson

IPC分类号： G01R1/073 ,  G01R31/02

CPC分类号： G01R1/07371

摘要： Loading system for loading of test pins into printed circuit board test fixtures. Test pins are loaded into a loader body, and locked thereto by a sliding locking plate through frictional engagement at an interface where in test pin hole is of a reduced surface area. Upon alignment of the loading body to the sliding lock plate, increasing surface area of each test pin hole, the test pins drop through the loading body into the test fixture. The lower surface area of the head of the test pin controls movement of the test pin between the loading body and the test fixture through gravity free fall. After circuit board testings, the test pins are reloaded back to the original location within the loader body for subsequent new circuit loading and testing.

摘要翻译： 将测试针加载到印刷电路板测试夹具中的装载系统。 测试销被装载到装载机主体中，并且通过滑动锁定板通过在测试针孔的表面积减小的界面处的摩擦接合而被锁定。 在将装载体对准滑动锁定板时，增加每个测试针孔的表面积，测试销通过装载体落入测试夹具中。 测试针的头部的下表面区域通过重力自由下落来控制测试销在装载体和测试夹具之间的运动。 在电路板测试之后，测试针被重新装载到装载机主体内的原始位置，用于随后的新电路加载和测试。