公开(公告)号：US5061586A

公开(公告)日：1991-10-29

申请号：US504824

申请日：1990-04-05

申请人： Bijay S. Saha ,  Thomas A. Jadwin

发明人： Bijay S. Saha ,  Thomas A. Jadwin

IPC分类号： G03G9/107

CPC分类号： G03G9/107

摘要： Disclosed are two-phase glass composite carrier particles which comprise a composite of a magnetically hard ferrite material having a single phase hexagonal crystalline structure of the formula MO.6Fe.sub.2 O.sub.3 where M is barium, strontium or lead exhibiting a coercivity of at least 300 Oersteds when magnetically saturated and an induced magnetic moment of at least 20 EMU/gm when in an applied field of 1000 Oersteds which is dispersed in a glass matrix comprised of from about 10 to 20 molar percent CuO, from about 10 to 40 molar percent BaO and from about 10 to 40 molar percent B.sub.2 O.sub.3 ; or a glass matrix comprised of from about 10 to 20 molar percent of V.sub.2 O.sub.5, from about 10 to 40 molar percent BaO and from about 10 to 40 molar percent B.sub.2 O.sub.3.Also disclosed is an electrostatic two-phase dry developer composition comprising charged toner particles mixed with oppositely charged carrier particles as described above.A method of developing an electrostatic image by contacting the image with the two-phase dry developer composition also is disclosed. The developer compositions of the invention exhibit reduced toner throw-off and other disclosed advantages.

摘要翻译： 公开了两相玻璃复合载体颗粒，其包括具有式MO.6Fe 2 O 3的单相六方晶系结构的磁性硬质铁氧体材料的复合物，其中M是钡，锶或铅在磁性上表现出至少300奥斯特的矫顽力 饱和和至少20 EMU / gm的诱导磁矩，当在分散在由约10至20摩尔％的CuO，约10至40摩尔％的BaO和约约10摩尔％的BaO的玻璃基质中的1000个奥斯特的施加场中时， 10〜40摩尔％的B2O3; 或由约10至20摩尔％的V 2 O 5，约10至40摩尔％的BaO和约10至40摩尔％的B 2 O 3组成的玻璃基质。 还公开了一种静电双相干显影剂组合物，其包含与上述相反电荷的载体颗粒混合的带电调色剂颗粒。 公开了通过使图像与两相干显影剂组合物接触来显影静电图像的方法。 本发明的显影剂组合物表现出减少的调色剂脱落和其它公开的优点。

公开(公告)号：US4394430A

公开(公告)日：1983-07-19

申请号：US254028

申请日：1981-04-14

申请人： Thomas A. Jadwin ,  Robert C. Storey

发明人： Thomas A. Jadwin ,  Robert C. Storey

IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G9/10

CPC分类号： G03G9/09741 ,  Y10S430/105

摘要： Alkyldimethylbenzylammonium salts are employed as charge control agents for fusible dry electrophotographic toners.

摘要翻译： 烷基二甲基苄基铵盐用作可熔干电子照相色调调色剂的电荷控制剂。

公开(公告)号：US4323634A

公开(公告)日：1982-04-06

申请号：US850164

申请日：1977-11-10

申请人： Thomas A. Jadwin

发明人： Thomas A. Jadwin

IPC分类号： G03G9/097 ,  G03G9/08

CPC分类号： G03G9/09741 ,  G03G9/0975 ,  Y10S260/20

摘要： The present invention relates to the use of low levels of quaternary ammonium salt surfactants as charge control agents for an electrostatic toner contained in dry electrographic developer compositions. Particularly useful such charge control agents are those which contain at least one amido group having 10 or more carbon atoms attached to the ammonium cation and an anion selected from a halide ion or an organosulfur-containing anion.

摘要翻译： 本发明涉及使用低水平的季铵盐表面活性剂作为干电摄影显影剂组合物中所含静电调色剂的电荷控制剂。 特别有用的这样的电荷控制剂是含有至少一个具有10个或更多个碳原子的酰胺基连接到铵阳离子上的阴离子和选自卤离子或含有机硫的阴离子的阴离子。