Electrophotography – Image formation – Development
Patent
1997-10-03
1999-08-24
Beatty, Robert
Electrophotography
Image formation
Development
G03G 1510
Patent
active
059435356
ABSTRACT:
A liquid supply roller supplies water-based developing liquid to a developing roller. The developing roller is formed with pores for containing developing liquid, and includes the internal surface of each pore and the outer surface. The internal surface is hydrophilic and the outer surface is hydrophobic. A doctor roller having a surface more hydrophobic than the internal surfaces and more hydrophillic than the outer surfaces, removes excess developing liquid from the outer surface of developing roller, thereby developing liquid is contained in an isolated condition in each pore. The dielectric surface of a photosensitive drum is selectively exposed by an optical image. Then, the exposed region forms an electrostatic image. Developing liquid in the pore is selectively attracted to the exposed region, thereby adhering to the region.
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patent: 4023898 (1977-05-01), Ohno et al.
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patent: 4245023 (1981-01-01), Cassiers et al.
patent: 4268597 (1981-05-01), Klavan et al.
patent: 5561507 (1996-10-01), Shelffo et al.
Beatty Robert
Brother Kogyo Kabushiki Kaisha
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