公开(公告)号：US4894308A

公开(公告)日：1990-01-16

申请号：US259239

申请日：1988-10-17

申请人： Hadi K. Mahabadi ,  Sheau V. Kao ,  Gerald R. Allison ,  Hui Chang ,  Edward J. Gutman

发明人： Hadi K. Mahabadi ,  Sheau V. Kao ,  Gerald R. Allison ,  Hui Chang ,  Edward J. Gutman

IPC分类号： G03G9/097 ,  G03G9/08 ,  G03G9/087

CPC分类号： G03G9/0812 ,  G03G9/081

摘要： A process for preparing an electrophotographic toner composition which comprises premixing a pigment and a charge control additive in the absence of a solvent, subsequently admixing the premixed pigment and charge control additive and a resin, and extruding the pigment, charge control additive, and resin. The pigment and the charge control additive may be premixed prior to being added to the extruder with the resin; alternatively, the pigment and charge control additive may be premixed by adding them to the extruder via an upstream supply means and extruding them, and subsequently adding the resin to the extruder via a downstream supply means.

摘要翻译： 一种用于制备电子照相调色剂组合物的方法，其包括在不存在溶剂的情况下预混合颜料和电荷控制添加剂，随后混合预混颜料和电荷控制添加剂和树脂，并挤出颜料，电荷控制添加剂和树脂。 颜料和电荷控制添加剂可以在用树脂加入挤出机之前进行预混合; 或者，颜料和电荷控制添加剂可以通过将它们经由上游供应装置加入到挤出机中并将其挤出来预混合，然后通过下游供应装置将树脂加入到挤出机中。

公开(公告)号：US4877706A

公开(公告)日：1989-10-31

申请号：US198265

申请日：1988-05-25

申请人： Hadi K. Mahabadi ,  Tie H. Ng ,  Nancy A. Listigovers ,  Trevor I. Martin

发明人： Hadi K. Mahabadi ,  Tie H. Ng ,  Nancy A. Listigovers ,  Trevor I. Martin

IPC分类号： G03G9/08 ,  G03G9/093

CPC分类号： G03G9/09328 ,  G03G9/09342 ,  Y10T428/2998

摘要： A cold pressure fixing toner composition comprised of a core containing a polymer component and magnetic pigment particles, and wherein the core is encapsulated within a shell comrised of the interfacial polycondensation reaction of a first polyisocyanate component and a second amine component, which toner includes thereon an electroconductive material obtained from a water based dispersion of said material in a polymeric binder, said first polyisocyanate component being selected from the group consisting of PAPI 27, PAPI 135, PAPI 94, PAPI 901, Isonate 143L, Isonate 181, Isonate 125M, Isonate 191, and Isonate 240; and said second amine component selected from the group consisting of ethylenediamine, tetramethylenediamine, pentamethylenediamine, hexamethylenediamine, p-phenylenediamine, m-phenylenediamine, 2-hydroxy trimethylenediamine, diethylenetriamine, triethylenetetraamine, tetraethylenepentaamine, 1,8-diaminooctane, xylylene diamine, bis(hexamethylene)triamine, tris(2-aminoethyl)amine, 4,4'-methylene bis(cyclohexylamine), bis(3-aminopropyl)ethylene diamine, 1,3-bis(aminomethyl)cyclohexane, 1,5-diamino-2-methylpentane piperazine, 2-methylpiperazine, 2,5-dimethylpiperazine, and 1,4-bis(3-aminopropyl)piperazine.