| US 7,582,401 B2 | ||
| Toner with hybrid binder resin | ||
| Yoshihiro Ogawa, Numazu (Japan); Yusuke Hasegawa, Sunto-gun (Japan); Tomohisa Sano, Sunto-gun (Japan); Junko Nishiyama, Sunto-gun (Japan); Miho Okazaki, Susono (Japan); Takashige Kasuya, Sunto-gun (Japan); and Koji Nishikawa, Sunto-gun (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Apr. 20, 2006, as Appl. No. 11/407,257. | ||
| Claims priority of application No. 2005-124977 (JP), filed on Apr. 22, 2005; and application No. 2006-083544 (JP), filed on Mar. 24, 2006. | ||
| Prior Publication US 2006/0240352 A1, Oct. 26, 2006 | ||
| Int. Cl. G03G 9/087 (2006.01) | ||
| U.S. Cl. 430—109.3 [430/111.4] | 7 Claims |
| 1. A toner comprising at least a binder resin and a colorant, wherein:
the binder resin contains a hybrid resin which contains a polyester-type resin unit by 50 mass % or more and in which a polyester-type
resin component and a vinyl-type resin component are chemically bonded;
the toner contains 3 mass % or more and 50 mass % or less of a tetrahydrofuran-insoluble matter derived from the binder resin;
the tetrahydrofuran-insoluble matter contains a hybrid resin; and
a tetrahydrofuran-soluble matter, obtained by hydrolyzing the tetrahydrofuran-insoluble matter and separating by filtration,
has, in a GPC-measured molecular weight distribution, the main peak within a molecular weight range of 50,000 to 500,000.
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