Patent ID: 7470497
Filing Date: 2008-12-30
Classification: G03G

Abstract:
1. A two-component developer comprising: a carrier for electrophotography in which a surface of at least a core material is coated with a resin; and a toner, wherein the coating resin contains a fluorine modified silicone resin and an aminosilane coupling agent, wherein the aminosilane coupling agent is included in a range of 5 to 40 weight parts with respect to 100 weight parts of the coating resin, wherein the fluorine modified silicone resin is a crosslinked fluorine modified silicone resin obtained by reacting an organic silicon compound containing a perfluoro alkyl group with polyorganosiloxane within a range of 3 to 20 weight parts with respect to 100 weight parts of the polyorganosiloxane, wherein the toner contains (1) a binding resin and (2) wax, and is charged negatively, wherein the binding resin includes a polyester resin in which at least one molecular weight maximum peak is in a region of 2×10 wherein the polyester resin is obtained by a condensation polymerization between an alcohol component and a carboxylic acid component.