Title: Coated roll for magnetic brush development and cleaning systems

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.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Fraser, Lawrence J. (Rochester, NY, US)
Parker, Delmer G. (Rochester, NY, US)
Scaletta, Joseph L. (Henrietta, NY, US)

Application Number: 552010
Filing Date: 1975-02-24
Publication_date: 1976-04-13
Assignee: Xerox Corporation (Stamford, CT)
Primary Class(es): 399/104 15/1.51, 399/276, 430/122
Other Classes:
US Patent Ref:

3246629	Apr, 1966	Shelffo et al.	427/18.
3402698	Sep, 1968	Koyima et al.	427/18.
3455276	Jul, 1969	Anderson	118/637.
3707389	Dec, 1972	Maksymiak et al.	118/637.
3739748	Jun, 1973	Rittler et al.	355/3.
3884572	May, 1975	Bacon et al.	355/15.

Other Refs:
Primary Examiner: Moses, R. L.
Assistant Examiner:
Attorney: