Toner for electrophotography and binder resin for toner

24-12-2013 дата публикации
Номер:
US8614041B2
Контакты:
Номер заявки: 07-19-5198
Дата заявки: 18-12-2007



Disclosed is a toner for electrophotography containing at least a binder resin. This toner for electrophotography is characterized in that (a) the tetrahydrofuran (THF) soluble content in the toner has a first peak in the molecular weight region of not less than 2,000 but less than 5,000 and a second peak in the molecular weight region of not less than 100,000 but less than 200,000 in the chromatogram obtained by gel permeation chromatography (GPC); (b) the binder resin contains at least a carboxyl group-containing vinyl resin (C) and a glycidyl group-containing vinyl resin (E); and (c) the mass ratio of the styrene monomer to the acrylic monomer in the binder resin, namely (S/A), is not less than 4.6 but less than 8.5.





IPC - классификация

GG0G03G03GG03G9G03G9/G03G9/0G03G9/08

Цитирование НПИ

Extended Search Report from European Patent Office issued in corresponding European Patent Application No. 07849850.8 dated Aug. 4, 2011.
International Search Report (PCT/ISA/210) for PCT/JP2007/001420 dated Jan. 22, 2008.
Office Action from Chinese Patent Office issued in corresponding Chinese Patent Application No. 200780046883.8 dated May 25, 2011.
Office Action from Korean Patent Office issued in corresponding Korean Patent Application No. 10-2009-7015066 dated Mar. 21, 2011.
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