Image forming apparatus with improved transfer efficiency
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United States of America Patent
Stats
-
Jan 25, 2005
Grant Date -
Dec 26, 2002
app pub date -
Aug 15, 2002
filing date -
Oct 31, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
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 (.PHI..sub.opc) of the surface of the latent image carrier is set to be larger than the work function (.PHI..sub.t) of the toner.
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Cited Art Landscape
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