| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a developer made of one component and a picture image formation method which uses the developer which stabilize toner charging and conveyance for a long time, do not cause problem such as low developing property, fog, filming, fusion, etc., and provide stable picture images for a long time. SOLUTION: In a developer made of one component which is composed of binding resin, toner particle containing coloring agent, and additive, titan component obtained by the reaction of TiO(OH)2 with silane compound is used as the additive. Preferably, TiO(OH)2 is produced by a wet method, for example, a sulfuric acid method, a hydrochloric acid method and silane compound such as chlorosilane, alkoxy-silane, silazane, special silyl agent, etc., is reacted with it and dried to produce it. Preferably, specific gravity of titan compound is 2.8 to 3.6.</p> |
