| 摘要 |
<p>PURPOSE:To provide a decolorizable toner having excellent preservation stability and a high achromatic speed at the time of decolorizable and capable of decolorizable in a short time by using binding resin and a specific near infrared absorbing dye as main constituents. CONSTITUTION:Binding resin and a near infrared absorbing dye expressed by the formula I or the formula II are used as main constituents. In the formula I, X indicates halogen ion, perchloric acid ion, PF6<->, SbF6<->, OH<->, sulfonate ion, or BF4<->. In the formula II, R<1>-R<4> independently indicate hydrogen atom, hydrocarbon group, or hydrocarbon group containing hetero atom respectively, and Y indicates cation having the absorption characteristic in the infrared region. An image formed by a decolorizable toner on an image base is process by a decolorant, then near infrared rays are radiated to the image decoloring. Polyethylene resin or polyester resin is used for the binding resin used for the decolorizable toner, and they are used alone or mixedly with two or more kinds.</p> |
