Appeal No. 1997-0006
Application 08/409,946
1. An electrophotographic recording material comprising a conductive support and a
photosensitive recording layer having charge generating capacity by photo-exposure and containing as
photoconductive pigment a photoconductive crystalline substituted metal-free phthalocyanine
compound and/or mixed crystal pigment of said substituted metal-free phthalocyanine compound with
an unsubstituted metal-free phthalocyanine, characterized in that said substituted metal-free
phthalocyanine compound is represented by following general formula (I)
wherein
R represents cyano substituent in ortho-position on at least one of the 6-membered rings in the
phthalocyanine structure in which each substituted 6-membered ring is only mono-substituted, the
possible ortho-positions being marked by asterisk (*), and
x is an integer 1, 2, 3, or 4,
wherein the major part by weight of said substituted metal-free phthalocyanine compound and mixed
crystals of said substituted metal-free phthalocyanine compound with unsubstituted metal-free
phthalocyanine is (are) present in the X-morphological form.
The appealed claims as represented by claim 1 are drawn to an electrophotographic recording2
material comprising at least a conductive support and a photosensitive recording layer, wherein the
photosensitive recording layer contains at least the crystalline photoconductive pigment depicted in
general formula (I) set forth in the claim that is a metal-free phthalocyanine substituted in an ortho-
position by 1 to 4 cyano groups and, in major part, is in the X-morphological form, which
pigment can also be combined with an unsubstituted metal-free phthalocyanine in mixed crystals.
According to appellants, the subject pigments have “high charge generating efficiency” and “good cyclic
behavior in repetitive use” (specification, page 8).
2Appellants state in their brief (pages 6-7) that the appealed claims constitute a single group. Thus, we
decide this appeal based on appealed claim 1. 37 CFR § 1.192(c)(7) (1995).
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