Patent ID: 7297455
Filing Date: 2007-11-20
Classification: G03G

Abstract:
1. A toner comprising toner particles containing at least a binder resin, a colorant and a wax, and inorganic fine particles, wherein said binder resin is a resin having at least a polyester unit; said binder resin having a polyester unit is a resin synthesized by using as a catalyst one or more compounds selected from the group consisting of titanium chelate compounds each having a structure represented by any one of the following Formulas (I) to (VI), and hydrates of the titanium chelate compounds; wherein R 1 and R 1 ′ each independently represent an alkylene group having 1 to 10 carbon atoms which may have a substituent, or an alkenylene group having 1 to 10 carbon atoms which may be substituted; and M represents a counter cation, m represents the number of cations, and n represents a valence number of the cation, where n is 2 when m is 1, n is 1 when m is 2, and M represents a hydrogen ion, an alkali metal ion, an ammonium ion or an organoammonium ion when n is 1, and represents an alkaline earth metal ion when n is 2; wherein M represents a counter cation, m represents a number of the cation, and n represents a valence number of the cation, where n is 2 when m is 1, n is 1 when m is 2, and M represents a hydrogen ion, an alkali metal ion, an ammonium ion or an organoammonium ion when n is 1, and represents an alkaline earth metal ion when n is 2; wherein R 2 and R 2 ′ each independently represent an alkylene group having 1 to 10 carbon atoms which may have a substituent, or an alkenylene group having 1 to 10 carbon atoms which may be substituted; and M represents a counter cation, m represents the number of cations, and n represents a valence number of the cation, where n is 2 when m is 1, n is 1 when m is 2, and M represents a hydrogen ion, an alkali metal ion, an ammonium ion or an organoammonium ion when n is 1, and represents an alkaline earth metal ion when n is 2; wherein R 3 and R 3 ′ each independently represent an alkylene group having 1 to 10 carbon atoms which may be substituted, or an alkenylene group having 1 to 10 carbon atoms which may have a substituent; and M represents a counter cation, m represents the number of cations, and n represents a valence number of the cation, where n is 2 when m is 1, n is 1 when m is 2, and M represents a hydrogen ion, an alkali metal ion, an ammonium ion or an organoammonium ion when n is 1, and represents an alkaline earth metal ion when n is 2; wherein M represents a counter cation, m represents the number of cations, and n represents a valence number of the cation, where n is 2 when m is 1, n is 1 when m is 2, and M represents a hydrogen ion, an alkali metal ion, an ammonium ion or an organoammonium ion when n is 1, and represents an alkaline earth metal ion when n is 2; and wherein R 4 and R 4 ′ each independently represent an alkylene group having 1 to 10 carbon atoms which may be substituted, or an alkenylene group having 1 to 10 carbon atoms which may be substituted; and M represents a counter cation, m represents the number of cations, and n represents a valence number of the cation, where n is 2 when m is 1, n is 1 when m is 2, and M represents a hydrogen ion, an alkali metal ion, an ammonium ion or an organoammonium ion when n is 1, and represents an alkaline earth metal ion when n is 2.