| 摘要 |
PURPOSE:To prevent the generation of image destruction and color mixture due to the 2nd development and to make it possible to separate a two-component toner used in the 1st development and mixed into the 2nd development, by using a soft one-component developing method as the 2nd development. CONSTITUTION:The one-component developing method is an extremely soft means unlike a two-component developing method because a carrier is not used. When the contact depth delta of the 2nd developing device is about 0mm. in case of using the one-component developing method, the development density of a black image is about 1.2. The density of a red image is not changed even if the contact depth delta of the 2nd developing device is increased. The reason is caused by the utilization of the 2nd soft developing method, removing phenomena that the toner of the red image is mechanically rubbed off by the 2nd development and then color mixture is generated by adhering black toner to the red toner. |
