| 摘要 |
<p>PURPOSE:To change the color tone over the entire part by incorporating functional coloring agents which are changed in color tone by photoirradiation into the toner. CONSTITUTION:Various compds. which are changed in color tones by the irradiation with light of a characteristic wavelength region are used as the functional coloring agents. One or >=2 kinds of resins are selected according to the applications of the functional resin particles from various thermosetting and curable resins and are used as the resins constituting the functional resin particles. The functional coloring agents include, for example, spiropyrans, fulgides, anils, triphenylmethanes, azo compds., polynathine dyes, diallylethens, etc. These compds. reversibly repeat dark coloration by irradiation mainly with UV rays and non-coloration or another pale color development by irradiation with visible rays or light shielding.</p> |
