Patent ID: 8632932

Claim:
A toner, comprising: a binder resin comprising a resin (a) comprising a polyhydroxycarboxylic acid skeleton formed from an optically-active monomer, wherein the polyhydroxycarboxylic acid skeleton has a weight average molecular weight of from 7,000 to 60,000, wherein the binder resin comprises the polyhydroxycarboxylic acid skeleton in an amount of from 59.7 to 90% by weight, wherein the resin (a) is amorphous, and wherein the polyhydroxycarboxylic acid skeleton has an optical purity X (%) of 80% or less, the optical purity X (%) is represented by the following formula: X (%)=| X ( L -isomer)− X ( D -isomer)| wherein X(L-isomer) and X(D-isomer) represent molar ratio (%) of L-isomer and D-isomer of the optically-active monomer, respectively, and wherein the toner comprises no colorant.