Magnet developing roller with dry plated sleeve

Details Magnet developing roller with dry plated sleeve Magnet developing roller with dry plated sleeve

1996-03-28

1997-12-09

Brase, Sandra L.

Electrophotography

Image formation

Development

399276, 399279, G03G 1508

Patent

active

056970293

ABSTRACT:
A developing roller includes a magnet roller and a rotatable sleeve thereon. The sleeve is covered with a surface coating of a metal, alloy, metal nitride, metal oxide, metal carbide or metal sulfide by dry plating. The coating has a resistivity of up to 0.01 .OMEGA.cm. The sleeve is fully wear resistant at its surface. Formation of the coating by dry plating minimizes the variation of coating thickness to improve the dimensional precision of the sleeve surface. The developing roller and a developing apparatus equipped therewith can produce images of quality for a long time.

REFERENCES:
patent: 4930438 (1990-06-01), Demizu et al.
patent: 4989044 (1991-01-01), Nishimura et al.
patent: 5164780 (1992-11-01), Ohno et al.
patent: 5353104 (1994-10-01), Kato et al.

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