Image forming apparatus with improved transfer efficiency

Details Image forming apparatus with improved transfer efficiency Image forming apparatus with improved transfer efficiency

2005-01-25

2005-01-25

Jackson, Jerome (Department: 2815)

Active solid-state devices (e.g., transistors, solid-state diode

Housing or package

With contact or lead

C257S668000, C257S685000, C257S686000, C257S688000, C257S693000, C257S678000

Reexamination Certificate

active

06847107

ABSTRACT:
By causing the movement of charge from a toner to a latent image carrier, the amount of charge of the toner is lowered to an amount of charge suitable for facilitating the transfer of toner so as to improve the transfer efficiency. For this, an image forming apparatus includes a latent image carrier and a developing means for forming a negatively chargeable toner layer composed of two stories or less on a toner carrier by a toner layer thickness regulating member. An electrostatic latent image on the latent image carrier is developed with the toner to form a visible image and the visible image is transferred to a transfer medium. Further, the work function (Φopc) of the surface of the latent image carrier is set to be larger than the work function (Φt) of the toner.

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