| 摘要 |
PURPOSE:To always obtain a picture of a good density by making a developing bias voltage different in accordance with the first developing means for executing a development of the first color, and the second developing means for executing a development of the second color. CONSTITUTION:An electrostatic charge use electrifier 8, an optical system 9, a two color developing device 10, a transfer use electrifier 11, a peeling use electrifier 12, a cleaning device 13, a destaticizing lamp 14, etc. are provided successively on the periphery of a photosensitive drum 7. An electrostatic latent image formed on the photosensitive drum 7 is developed by the developing device 10, and transferred on a form by the transfer use electrifier 11. The developing device 10 has the first developing device 321 for executing a development of the first color, and the second developing device 322 for executing a development of the second color, and in accordance with the time of development by the first developing device 321 and the time of development by the second developing device 322, the developing bias is switched to a different value. |
