Appeal No. 2002-0881
Application No. 09/169,071
operation of the pressure chamber in Ochiai would have employed
the conductive orifice plate taught by Halko. Nor do Halko and
Ochiai provide any teaching or suggestion that a conductive
orifice plate, such as the one described in Halko, can be used in
the pressure chamber of the type described in Ochiai.
The examiner also relies on Takahashi to teach the claimed
cleaning station. According to the examiner (Answer, page 6):
Takahashi et al. teaches an ink jet print head
comprising a liquid repellent process unit which applies a
liquid repellent coating to a discharge port surface for the
purpose of cleaning the discharge port surface and
preventing ink from accumulating on a discharge port surface
(col. 4:34-68 and col. 5:1-2).
However, Halko teaches that its hydrophobic compound coated gold
orifice plate already prevents ink and other contaminants from
accumulating on a discharge port surface of the orifice plate.
See column 1, lines 11-31. On this record, the examiner has not
demonstrated that Halko’s orifice plate surface proposed to be
placed in the pressure Chamber of Ochiai suffers from the same
accumulation problem suffered by Takahashi’s discharge port
surface. It then follows that there is no reason or incentive to
employ the cleaning station of the type described in Takahashi in
the modified inkjet printhead of the type suggested by the
examiner.
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