Coated roll for magnetic brush development and cleaning systems

Details Coated roll for magnetic brush development and cleaning systems Coated roll for magnetic brush development and cleaning systems

1975-02-24

1976-04-13

Moses, R. L.

Photocopying

Including fiber optics

15 15R, 118637, 355 15, 427 18, G03G 1500

Patent

active

039500896

ABSTRACT:
To realize the advantages which sometimes attach to the use of electrically conductive carrier particles, the electrodes within development systems and cleaning systems for electrostatographic processors, such as xerographic copiers and duplicators, are coated or otherwise held in intimate contact with a sufficiently thick layer of material having a resistivity which is selected to prevent carrier caused short circuit events from producing irreversible damage and to localize the effects of such events. As a general rule, a 1-25 mil thick layer of a material having a resistivity in the range of 10.sup.7 - 10.sup.9 ohm.sup.. cm is adequate for that purpose.

REFERENCES:
patent: 3246629 (1966-04-01), Shelffo et al.
patent: 3402698 (1968-09-01), Koyima et al.
patent: 3455276 (1969-07-01), Anderson
patent: 3707389 (1972-12-01), Maksymiak et al.
patent: 3739748 (1973-06-01), Rittler et al.
patent: 3884572 (1975-05-01), Bacon et al.

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