Decolorizable toner

A decolorizable toner comprising

• (A) a resin binder having a melt viscosity of at most 10.sup.7 poise at a temperature of 110.degree. C. and a melt viscosity of at least 10.sup.3 poise at a temperature of 140.degree. C,
• (B) at least one near infrared ray-absorbing dye selected from the group consisting of a near infrared ray-absorbing dye represented by the general formula (I):
• X.sup.-.Y.sup.+ (I)
• wherein X.sup.- is a halogen ion, perchloric acid ion, PF.sub.6.sup.-, SbF.sub.6.sup.-, OH.sup.-, sulfonic acid ion or BF.sub.4.sup.-, Y.sup.+ is a cation having absorptions in the near infrared region, and a near infrared ray-absorbing dye represented by the general formula (II):
• ##STR19## wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is independently hydrogen atom, a hydrocarbon group or a hydrocarbon group containing a hetero atom, Y.sup.+ is the same as defined above,
• (C) a decolorizing agent represented by the general formula (III):
• ##STR20## wherein each of R.sup.5, R.sup.6, R.sup.7 and R.sup.8 is independently an alkyl group, an aryl group, an allyl group, an aralkyl group, an alkenyl group, an alkynyl group, silyl group, an alicyclic group, a substituted alkyl group, a substituted aryl group, a substituted allyl group, a substituted aralkyl group, a substituted alkenyl group, a substituted alkynyl group or a substituted silyl group, with the proviso that at least one of R.sup.5, R.sup.6, R.sup.7 and R.sup.8 is an alkyl group having 1 to 12 carbon atoms;
• and each of R.sup.9, R.sup.10, R.sup.11 and R.sup.12 is independently hydrogen atom, an alkyl group, an aryl group, an allyl group, an aralkyl group, an alkenyl group, an alkynyl group, an alicyclic group, a substituted alkyl group, a substituted aryl group, a substituted allyl group, a substituted aralkyl group, a substituted alkenyl group or a substituted alkynyl group, and
• (D) a light fastness stabilizer.