| 摘要 |
<p>PURPOSE: To obtain an image having high image density even though developing is performed by using a photoreceptor in which a white sheet potential is >=150V and a residual potential is high so as to impress a high bias voltage, and also to obtain the image having the high image density even when using a small- diameter development sleeve whose diameter is <=35mm. CONSTITUTION: In the recycle developing method using the photoreceptor 1 in which white plate potential is >=150V and this small-diameter development sleeve 10 whose diameter is <=35mm, developing an electrostatic image formed on the photoreceptor 1 and forming a toner image by using two-component type magnetic developer constituted of magnetic carrier and sensible toner particles with which a developing device 11 is filled, recovering the toner remaining on the photoreceptor 1 by a cleaning means after the toner image is transferred, and supplying the recovered toner and virgin toner for replenishment in the device 11, ferritic carrier whose electric resistance is 10<8> to 10<9>Ωis used as the magnetic carrier of the two-component type magnetic developer.</p> |
