Patent ID: 6821696
Filing Date: 2004-11-23
Classification: G03G

Abstract:
A toner for optical fixing, comprising:a binder resin; a colorant; and an infrared light absorbent, wherein: a coloring opacity of the infrared light absorbent is 20 or less; and the infrared light absorbent has a structure expressed by the following chemical formula (1) and/or (2); wherein:each of R1 through R8 denotes a substituent added to a benzene ring or a naphthalene ring, and comprises a hydrogen, a halogen atom, a saturated or unsaturated hydrocarbon group having the number of carbons in a range between 1 and 18, or an oxygen and/or nitrogen content hydrocarbon group having the number of carbons in a range between 1 and 13; and M denotes two hydrogen atoms, a divalent metal, or a trivalent or tetravalent metal derivative.