Appeal No. 2001-1773
Application No. 08/732,864 Page 12
The amount of resistance can be processed by the printing
apparatus as a symbolic representation of certain performance
data associated with printhead 50, which may be the mean or
minimum resistance of heating elements 26 (col. 5, line 52
through col. 6, line 17). To obtain a desired amount of
resistance in the area of resistivity 62, there is provided a
trim area which is created as the result of removing a
predetermined amount of polycrystalline silicon, such as by means
of a laser (col. 6, lines 18-23). Thus, when a chip 50 is
freshly manufactured, necessary tests may be performed on each
chip, and the desired resistance value may be created (col. 6,
lines 30-35).
From the disclosure of Watrobski we agree with the examiner
(answer, page 4) that Watrobski's area of resistivity 62, between
terminals 60a and 60b is a resistive network. However, we find
the examiner's reliance (answer, page 5) upon In re Japikse and
In re Larson to be misplaced. While at times it may be within
the level of skill to rearrange parts or to make separate parts
integral, there must be a suggestion in the prior art for the
proposed modification. From our review of Bullock and Watrobski,
we find no suggestion, and none has been provided by the
examiner, that would have suggested to an artisan that the
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Next
Last modified: November 3, 2007