| 摘要 |
<p>PURPOSE:To provide an electrostatic charge image developing toner excellent in light resistance and color-erasing property by allowing the mixtures of coloring toner particles into which a near infrared absorbing dye is compounded and sensitizer toner particles into which a color erasing agent is compounded to be present independently from each other. CONSTITUTION:This toner consists of coloring toner particles into which a near infrared absorbing dye expressed by formula I or formula II is compounded, and sensitizer toner particles into which a color erasing agent expressed by formula III is compounded. During developing and fixing, both toner particles are uniformly dispersed with a small frequency of contact of both toner particles so that the toner has excellent light resistance and storage stability. During erasing, the toner is heated to increase fluidity of the binder resin and to increase the frequency of contact of both toner particles, which improves the color erasing rate. In formulae, X is a halogen ion, etc., R<1>-R<4> are hydrogen, univalent hydroxyl groups, etc., Y is a cation, R<5>-R<8> are alkyl groups, aryl groups, etc., and R<9>-R<12> are hydrogen atoms, alkyl groups, etc.</p> |
