Title: Transfer development apparatus using self-spacing donor member

Abstract: In an electrostatographic imaging apparatus, comprising, an imaging member with a surface capable of retaining an electrostatic latent image, a donor member with a surface capable of supporting a layer of particulate image-developing material, and means for maintaining the surface of said donor member in close proximity to the surface of said imaging member, the improvement which comprises a donor member having permanently disposed on its surface a plurality of raised, granular elements for self-spacing the donor member from the imaging member.

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Inventors: Hardenbrook, James M. (Columbus, OH, US)

Application Number: 770172
Filing Date: 1977-02-16
Publication_date: 1979-04-17
Assignee: Xerox Corporation (Stamford, CT)
Primary Class(es): 399/286
Other Classes:
US Patent Ref:

2892709	Jun, 1959	Mayer	118/651.
2895847	Jul, 1959	Mayo	118/653.
3115814	Dec, 1963	Kapnelian	118/653.
3203394	Aug, 1965	Hope et al.	118/650.
3375806	Apr, 1968	Nost	118/653.
3519819	Jul, 1970	Gramza et al.	96/1.
3559570	Jul, 1966	Mantel et al.	118/661.
3676215	Jul, 1972	Gundlach	96/1.
3739748	Jun, 1973	Rittler et al.	118/653.
3860436	Jan, 1975	Meagher	118/651.
3866572	Feb, 1975	Gundlach	118/651.
4023967	May, 1977	McGibbon	118/661.

Other Refs:
Primary Examiner: Schroeder, Werner H.
Assistant Examiner: Falik, Andrew M.
Attorney: Ralabate; James J., Henry, II; William A.