Appeal No. 1997-3646 Page 6
Application No. 08/172,521
wherein the “charge generating layer contains a charge
transporting substance and an arylalkane compound...” of a
specified formula. See the carryover sentence at pages 8 and 9
of Takei and the general formula of the arylalkane compound
that is set forth on page 9 of Takei. While the arylalkane5
compound may be used in the protective layer of Takei, the
arylalkane compound is a distinct compound from the charge
transporting material (CTM) of Takei. See pages 26 through 34a
of Takei for a listing of charge transporting materials and
pages 9-13 for a description of the arylalkane compound
additive. According to Takei (page 10, lines 12-26), the
arylalkane compound is used for protecting the CTM compound
from ozone attack.
The examiner’s position appears to be that it would have
been obvious to one of ordinary skill in the art to have
selected an hydroxy substituted triphenyl methane type
compound from among the plethora of compounds disclosed as an
arylalkane additive compound in Takei for use as a charge
transporting compound in the overcoat layer of Lindblad based
5As set forth in footnote 3 above, our references to Takei are to the
English language translation thereof, of record.
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