Low temperature electrophotographic toner composit

专利名称：Low temperature electrophotographic

toner composition comprising nonlinearpolyester resin

发明人：Nobuyuki Yoshimoto,Hirobumi

Iemura,Osamu Oseto,Nobuo Yamada

申请号：US07/117879申请日：19871109公开号：US04863825A公开日：19890905

摘要：A toner composition for electrophotography excellent in fixing property at alow temperature, offset resistance and blocking resistance comprising a resin binder anda colorant which is dispersed in the resin binder, the resin binder being a nonlinearpolyester resin prepared by the reaction of:

(a) an acid component comprising at least one long chain dicarboxylic acid selectedfrom the group consisting of a linear aliphatic dicarboxylic acid having 16 to 34 carbonatoms, a dimer acid and a dibasic acid having 21 carbon atoms, an aromatic dicarboxylicacid, and optionally a monocarboxylic acid,

(b) an alcohol component comprising an etherificated diphenol and optionally aglycidyl ester of rosin and

(c) a crosslinking component comprising a polycarboxylic acid having valency of notless than 3 and/or a polyhydric alcohol having a valency of not less than 3, wherein in casethat the long chain dicarboxylic acid and the aliphatic dicarboxylic acid are employed, the

contents of the long chain dicarboxylic acid and the aromatic dicarboxylic acid are 2 to25% by mole and 75 to 98% by mole, respectively and in case that the long chaindicarboxylic acid, the aliphatic dicarboxylic acid and the monocarboxylic acid are

employed, the contents of the long chain dicarboxylic acid, the aliphatic dicarboxylic acidand the monocarboxylic acid are 2 to 25% by mole, 10 to 93% by mole and 5 to 65% bymole, respectively, based upon the total amount of the (a) acid component, the contentof the (c) crosslinking component is 0.5 to 20% by weight of the polyester resin, and anorganic polyvalent metal compound is contained in an amount of 0 to 40% by weightbased upon the polyester resin.

申请人：TOYO INK MANUFACTURING CO., LTD.,ARAKAWA KAGAKU KOGYOKABUSHIKI KAISHA

代理机构：Armstrong, Nikaido, Marmelstein, Kubovcik & Murray

更多信息请下载全文后查看