Appeal No. 1997-1592
Application No. 08/325,566
be incorporated in a charging member for charging an electrophotographic photoreceptor is required to
exhibit an electrical conductivity of 10 to 10 [ohms] as calculated in terms of resistivity.”3 9
(Specification, p. 1).
In general, a conductive member is provided on a metallic shaft and its external surface acts an
electrically conductive layer. (Specification, p. 1). For example, the charging member can be charged
and brought into contact with a drum-shaped photoreceptor such that the surface of photoreceptor
becomes uniformly charged. (Specification, pages 7-8 and Fig. 3). A latent image may then be formed
on the surface of the photoreceptor and this latent image may be developed by a means of
development. (Specification, p. 8).
A copy of the claims under appeal is set forth in the appendix to the Appellant’s Brief.
Independent claim 5 is illustrative of the invention and reads as follows:
5. An electrophotographic charging member, which comprises a porous
anodized aluminum film formed by anodically oxidizing a support the surface of which
comprises aluminum or aluminum alloy and a surface protective layer on the surface of
said porous anodized aluminum film, said surface protective layer having dispersed
therein electrically conductive fine particles having a particle size of not greater than 5
Fm.
The References
The prior art references of record relied upon by the examiner and the appellant’s are:
Aizawa et al. (Aizawa) 4,430,410 Feb. 7, 1984
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