公开(公告)号：US5281502A

公开(公告)日：1994-01-25

申请号：US895079

申请日：1992-06-08

申请人： Grace T. Brewington ,  Richard W. Bigelow ,  Robert W. Anderson ,  Paul C. Julien ,  Susan J. Kremer

发明人： Grace T. Brewington ,  Richard W. Bigelow ,  Robert W. Anderson ,  Paul C. Julien ,  Susan J. Kremer

IPC分类号： G03G9/097 ,  G03G9/08 ,  G03G9/09 ,  G03G9/113 ,  G03G13/01 ,  G03G15/01

CPC分类号： G03G9/09 ,  G03G13/013 ,  G03G9/0918

摘要： Disclosed is a process for forming two-color images which comprises (1) charging an imaging member in an imaging apparatus; (2) creating on the member a latent image comprising areas of high, intermediate, and low potential; (3) developing the low areas of potential with a colored developer comprising a colored first toner comprising a polymer resin selected from the group consisting of styrene-butadiene copolymers, styrene-acrylate copolymers, styrene-methacrylate copolymers, and mixtures thereof, a blue first colored pigment of the formula C.sub.32 H.sub.16 N.sub.8 Cu, a cetyl pyridinium chloride charge control agent, a 3,5-di-tertbutyl salicylate compound charge control agent, colloidal silica surface external additives, and metal stearate salt surface external additives; a colored second toner comprising a polymer resin selected from the group consisting of styrene-butadiene copolymers, styrene-acrylate copolymers, styrene-methacrylate copolymers, and mixtures thereof, a cyan second colored pigment of the formula C.sub.104 H.sub.164 N.sub.12 O.sub.8 S.sub.4 Cu, a charge control agent selected from the group consisting of distearyl dimethyl ammonium methyl sulfate and distearyl dimethyl ammonium bisulfate, colloidal silica surface external additives, and metal stearate salt surface external additives; and a color carrier comprising a core and a coating selected from the group consisting of methyl terpolymer, polymethyl methacrylate, and a blend of from about 35 to about 65 percent by weight of polymethylmethacrylate and from about 35 to about 65 percent by weight of chlorotrifluoroethylene-vinyl chloride copolymer, wherein the coating contains from 0 to about 40 percent by weight of the coating of conductive particles; (4) subsequently developing the high areas of potential with a black developer comprising a black toner comprising a second resin present selected from the group consisting of polyesters, styrene-butadiene polymers, styrene-acrylate polymers, styrene-methacrylate polymers, and mixtures thereof, a black pigment, and a charge control additive; and a black carrier comprising a core and a coating selected from the group consisting of chlorotrifluoroethylene-vinyl chloride copolymer containing from 0 to about 40 percent by weight of conductive particles; polyvinylfluoride; and polyvinylchloride; and (5) transferring the developed two-color image to a substrate.

公开(公告)号：US5212037A

公开(公告)日：1993-05-18

申请号：US739071

申请日：1991-08-01

申请人： Paul C. Julien ,  Ronald J. Koch ,  Grace T. Brewington

发明人： Paul C. Julien ,  Ronald J. Koch ,  Grace T. Brewington

IPC分类号： G03G15/08 ,  G03G9/097 ,  G03G13/08

CPC分类号： G03G13/08 ,  G03G9/09708

摘要： A process for avoiding, or minimizing toner contamination of electrodes in a scavengeless electrophotographic imaging apparatus which comprises adding to the donor roll present in said apparatus a toner comprised of resin, pigment, charge additive, and a metal oxide, or a mixture of metal oxides.

公开(公告)号：US5124224A

公开(公告)日：1992-06-23

申请号：US679507

申请日：1991-04-01

申请人： John S. Berkes ,  Paul C. Julien ,  Suresh K. Ahuja ,  Che C. Chow

发明人： John S. Berkes ,  Paul C. Julien ,  Suresh K. Ahuja ,  Che C. Chow

IPC分类号： G03G9/087

CPC分类号： G03G9/08704

摘要： A process for the preparation of a toner with a melting point of from about 100.degree. to about 130.degree. C. which comprises the addition of a linear crystalline polyethylene with a weight average molecular weight of from about 500 to about 1,200 to a toner comprised of a polyester and pigment.

摘要翻译： 一种制备熔点为约100℃至约130℃的调色剂的方法，其包括向由以下组成的调色剂组成的调色剂中加入重均分子量为约500至约1,200的直链结晶聚乙烯 聚酯和颜料。

公开(公告)号：US4794878A

公开(公告)日：1989-01-03

申请号：US81272

申请日：1987-08-03

申请人： Edward W. Connors ,  Paul C. Julien ,  Robert G. Martin

发明人： Edward W. Connors ,  Paul C. Julien ,  Robert G. Martin

IPC分类号： G03G15/08

CPC分类号： G03G15/0822 ,  G03G15/08 ,  Y10S222/01

摘要： The invention is a single component development system including a housing with a sump containing a supply of toner, an ultrasonic transducer having one end extending into the source of the toner and the other end disposed adjacent a photoreceptor, and a current source electrically connected to the ultrasonic transducer to charge the toner and move the toner from the sump to the photoreceptor.

摘要翻译： 本发明是一种单组分显影系统，其包括具有包含调色剂供应的贮槽的壳体，具有延伸到调色剂源中的一端的超声波换能器和邻近感光体设置的另一端，以及电连接到 超声换能器对调色剂充电并将调色剂从贮槽移动到感光体。