| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a long-life nonmagnetic single component toner which has proper electrification property and resistance against melt sticking in various environments in the nonmagnetic single component development method, which can form stable images with little fog, sufficient line density, no irregular density, no void in characters (particularly void in characters on a thick sheet) and excellent reproducibility of a black solid image. SOLUTION: The nonmagnetic single component toner is prepared by depositing silica A which is surface treated with at least amino silane and has 30 to 70 m2/g specific surface area by the BET method, silica B which is surface treated with silicone oil and has >=100 m2/g specific surface area, and silicone oil on the surfaces of toner particles containing a binder resin and coloring agent.</p> |
