| 摘要 |
PURPOSE:To stabilize an amount of the frictional electrification of the titled toner, and to make the distribution of the frictional electrification sharp and uniform, and to enable to control the electrification amount of the titled toner to that suitable to the used development system by incorporating a specific org. tin compd. to the titled toner. CONSTITUTION:The titled toner is incorporated with the org. tin compd. shown by the formula wherein R may be branched and is 1-24C alkyl, cycloalkyl, aryl or aralkyl group, R' is methylene or 2-12C alkylene group. the prescribed compd. is thermally and timewisely stable, and is low in a moisture content, when the prescribed compd. is incorporated to the developer, the good charge controlling agent capable of forming the developer having an excellent electrophotographic characteristics is obtd. Therefore, by incorporating the prescribed compd. to the developer, the stable frictional electrification characteristics is obtd., and the development and the transfer are truly effected according to the latent image. When the titled toner is continuously used for long periods, the toner does not occur the coagulation, maintaining the primary characteristics. The clean colored picture may be obtd., without being influenced to the change of the temperature and humidity. |
