Coating apparatus – Control means responsive to a randomly occurring sensed...
Patent
1989-02-16
1991-01-08
Moses, R. L.
Coating apparatus
Control means responsive to a randomly occurring sensed...
355256, 355257, 355259, 430117, G03G 1510, G03G 1704
Patent
active
049826921
ABSTRACT:
The invention relates to an apparatus for development of an electrostatic latent image formed on a carrier surface by a liquid developer. The apparatus has a developer carrier with a smooth surface to carry thereon the liquid developer, such as a rotating roller partially submerged int he liquid developer. When the image-carrying surface comes close to the surface of the developer carrier the electrostatic image attracts the developer liquid existing on the developer carrier surface. To ensure that the developer liquid rises and projects to reach the image-carrying surface exactly and exclusively in an area just opposite to the latent image, the smooth surface of the developer carrier is divided into a plurality of first regions which are provided by a first material and uniformly distributed over the entire area of the surface and a second region which is provided by a second material and occupies the spacings between the first regions, using a readily wettable material as the first material and a hardly wettable material as the second material, or an electrically conductive material as the first material and a dielectric material as the second material.
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Moses R. L.
NEC Corporation
Smith Matthew S.
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