Developing apparatus using a developer carrier capable of formin

Details Developing apparatus using a developer carrier capable of formin Developing apparatus using a developer carrier capable of formin

1991-06-14

1994-02-15

Fuller, Benjamin R.

Coating apparatus

With means to apply electrical and/or radiant energy to work...

With electromagnetic and/or electrostatic removal of...

355245, 355259, G03G 1506

Patent

active

052869180

ABSTRACT:
A developing apparatus having a rotatable toner carrier for transporting a toner to a developing region where it faces an image carrier on which a latent image has been electrostatically formed. The surface of the toner carrier is constituted by a mixture of conductive surface portions and dielectric surface portions and selectively holds a charge to form microfields. The toner having been charged is electrostatically deposited on the toner carrier by the microfields and transported to the developing region as the toner carrier moves. In the developing region where the toner carrier and the image carrier face each other while defining a developing gap therebetween, the toner electrostatically flies from the toner carrier to the latent image formed on the image carrier to thereby develop it.

REFERENCES:
patent: 3759222 (1973-09-01), Maksymiak et al.
patent: 4006981 (1977-02-01), Fantuzzo
patent: 4289837 (1981-09-01), Gundlach
patent: 4515106 (1985-05-01), Kohyama
patent: 4788570 (1988-11-01), Ogata et al.
patent: 4896625 (1990-01-01), Sakamoto et al.
patent: 4982692 (1991-01-01), Uematsu

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