Developing roller of monocomponent developing system

Details Developing roller of monocomponent developing system Developing roller of monocomponent developing system

1992-03-18

1993-09-14

Herbert, Jr., Thomas J.

Stock material or miscellaneous articles

Composite

Of metal

428458, 428463, 430 47, B32B 1508

Patent

active

052447413

ABSTRACT:
A developing roller of monocomponent developing system, in which a low hygroscopic material is used for a dielectric layer, thereby suppressing a change of electric properties of the layer caused by water absorption, that is, a dielectric layer using a low hygroscopic material, namely, a low hygroscopic elastomer or a low hygroscopic polymer is used at an outer surface of a conductive supporting body where, as a concrete example of the elstomer or the polymer, polyethylene, polypropylene, ethylenic copolymer, rigid polyvinyl chloride, fluoro resin, acetal resin or mixtures thereof, or the elastomer or the polymer in which manganese-aluminum magnet, strontium ferrite, barrium ferrite of mixtures thereof is dispersed.

REFERENCES:
patent: 4027049 (1977-05-01), Masuda et al.
patent: 5073434 (1991-12-01), Frank et al.

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