| 摘要 |
PURPOSE:To easily obtain a sharp image which is free from color deviation and mixed colors with one time of development by forming a titled developer in such a manner that a 1st toner is imparted with a charge quantity by friction with a 1st carrier, 2nd toner is imparted with the charge quantity of the polarity reverse from the polarity of the 1st toner by friction with a 2nd carrier and there is no formation of the friction charge quantity in other combinations. CONSTITUTION:The dry process developer contains the 1st toner ta and 2nd toner tb which are different in color tone from each other as well as the 1st carrier ca and 2nd carrier cb. The toner ta is imparted with the charge quantity by the friction with the carrier ca and the toner tb is imparted with the charge quantity of the polarity reverse from the polarity of the toner ta. The friction charge is not generated in the relation of ta and cb and the relation of tb and ca. The toners ta, tb are, therefore, not charged even if the toner ta and the carrier cb are mixed and agitated and even if the toner tb and the carrier ca are mixed and agitated. The toner image divided to the two colors is consequently formed when the toners ta and tb and the carriers ca and cb are used and used for one-component development. |
