公开(公告)号：EP0961176A1

公开(公告)日：1999-12-01

申请号：EP99110154.4

申请日：1999-05-25

申请人： NASHUA CORPORATION

发明人： Bartus, Jan ,  Vail, Wilfred

IPC分类号： G03G9/113 ,  G03G9/107

CPC分类号： G03G9/1134 ,  G03G9/1075

摘要： A carrier composition is provided for electrophotographic development. Core particles are coated with a graft copolymer of a fluoropolymer and methyl methacrylate. The core particles preferably are a material selected from steel, nickel, iron, ferrites, passivated iron, or mixtures or alloys thereof. The fluoropolymer preferably is a polymer selected from chlorotrifluoroethylene, polyvinylidene fluoride, polytrifluoroethylene, polytetrafluoroethylene, copolymers of vinylidene fluoride and hexafluoropropylene, and copolymers of vinylidene fluoride and tetrafluoroethylene. In a preferred carrier composition, the coating consists of two layers. The exterior layer is a graft copolymer made of a fluoropolymer and methyl methacrylate.

摘要翻译： 提供用于电子照相显影的载体组合物。 核心颗粒用含氟聚合物和甲基丙烯酸甲酯的接枝共聚物涂覆。 核心颗粒优选为选自钢，镍，铁，铁素体，钝化铁或其混合物或合金的材料。 含氟聚合物优选为选自三氟氯乙烯，聚偏二氟乙烯，聚三氟乙烯，聚四氟乙烯，偏二氟乙烯和六氟丙烯的共聚物，偏二氟乙烯和四氟乙烯的共聚物的聚合物。 在优选的载体组合物中，涂层由两层组成。 外层是由含氟聚合物和甲基丙烯酸甲酯制成的接枝共聚物。

公开(公告)号：EP1093027A1

公开(公告)日：2001-04-18

申请号：EP00122160.5

申请日：2000-10-12

申请人： Nashua Corporation

发明人： Bartus, Jan ,  Janules, Robert ,  Boswell, James ,  Clark, Jeffrey

IPC分类号： G03G9/087

CPC分类号： G03G9/08702 ,  G03G9/08795 ,  G03G9/08797

摘要： A method for preparing a toner resin having a bimodal distribution of molecular weight is provided for. In order to receive an improved toner on a method comprises are the following steps:
a first resin portion is formed by emulsion polymerization of at least one monomer;
A second resin portion is formed around the first resin portion by suspension polymerization of at least one monomer. As a result a resin is obtained which has a polydispersity in the range of 5 to 50.
Further on a toner composition is provided for comprising a resin as main component. The resin comprises articles containing a first resin portion having a particle size in the range of about 50 to about 200 nanometers. The number average molecular weight is in the range of about 10 4 to 10 7 daltons. The resin further comprises a second resin portion formed around the first resin portion. That second resin portion has a number average molecular weight lower than that of said first resin portion. The resin has a polydispersity in the range 5 to 50.

摘要翻译： 提供了一种制备具有分子量双峰分布的调色剂树脂的方法。 为了在方法中接收改进的调色剂，包括以下步骤：通过至少一种单体的乳液聚合形成第一树脂部分; 通过至少一种单体的悬浮聚合在第一树脂部分周围形成第二树脂部分。 结果得到多分散性在5〜50范围内的树脂。此外，提供了一种以树脂为主要组分的调色剂组合物。 树脂包含含有粒度在约50至约200纳米范围内的第一树脂部分的制品。 数均分子量在约10 4至1​​0 7道尔顿的范围内。 树脂还包括形成在第一树脂部分周围的第二树脂部分。 第二树脂部分的数均分子量低于所述第一树脂部分的数均分子量。 该树脂的多分散性在5至50的范围内