| 摘要 |
PURPOSE:To obtain a toner for developing electrostatic charge images with which the good images are obtainable even if the toner is applied to a non- magnetic one-component development method and is subjected to copying of many sheets by incorporating a binder resin, coloring agent, calcium carbonate and fine particles consisting of specific ceramics into the toner. CONSTITUTION:The binder resin, the coloring agent, the calcium carbonate and the fine particles consisting of the ceramics having <=3mum average grain size are incorporated into the toner. The high-quality images are obtd. without forming the thin toner layers on the surface of a sleeve by the polishing and cleaning effect of the fine powder exposed on or sticking to the toner surface even if the toner is applied to the nonmagnetic one-component development system using a dielectric sleeve with electrodes or conductive sleeve and is subjected to continuous copying of a large number of copies. |
