Patent ID: 8679714
Filing Date: 2014-03-25
Classification: G03G

Abstract:
1. A toner comprising: a first binder resin; a colorant; a releasing agent; and a crystalline organic compound, wherein the first binder resin contains an amorphous polyester resin (a) having a polyhydroxycarboxylic acid skeleton derived from optically active monomers in a part of a main chain of the amorphous polyester resin, and the polyhydroxycarboxylic acid skeleton has an optical purity X, calculated on the monomer basis, of 80% or less, and the optical purity X is determined from the following equation, where X (L-form) represents, calculated on the monomer basis, an L-form ratio (mol %), and X (D-form) represents, calculated on the monomer basis, a D-form ratio (mol %), and wherein the crystalline organic compound is a crystalline low molecular compound which has a melting point of 60° C. to 100° C., and is a member selected from the group consisting of fatty acids having 16 to 24 carbon atoms, alcohols having 16 to 24 carbon atoms, fatty acid ester compounds, and aliphatic carboxylic acid amides; wherein the toner satisfies the following formula (2): where Q