Title: Magnetic brush developing apparatus

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Claims: What is claimed is:

1. In a magnetic brush developing apparatus for applying developing materials to a photoconductive surface to develop electrostatic latent images thereon in an electrostatic printing machine, an improved roller assembly which comprises: an external sleeve, said sleeve being comprised of an electrically conductive material, and insulating members disposed on the end portions of said sleeve to electrically insulate said sleeve from external discharge.

2. The apparatus as defined in claim 1 including means to support said sleeve for rotation, a drive shaft for said sleeve, and insulated drive means affixed to said drive shaft for rotating said drive shaft and said sleeve while maintaining electrical insulation of said sleeve.

3. The apparatus as defined in claim 2 wherein the magnetic brush developing apparatus is comprised of at least two roller assemblies.

Other info:

Inventors: Charland, Terrence D. (Pittsford, NY, US)
Klett, Stanley D. (Fairport, NY, US)

Application Number: 554954
Filing Date: 1975-03-03
Publication_date: 1976-07-13
Assignee: Xerox Corporation (Stamford, CT)
Primary Class(es): 399/256 399/267
Other Classes:
US Patent Ref:

3176652	Apr, 1965	Mott et al.	118/637.
3455276	Jul, 1969	Anderson	118/637.
3724422	Apr, 1973	Latone et al.	118/637.

Other Refs:
Primary Examiner: Kaplan, Morris
Assistant Examiner:
Attorney: