Appeal No. 1999-1889 Page 10
Application No. 08/366,988
to be supplied to an ink jet recording head ....” P. 3,
ll. 3-4. “[T]he main body of the ink container ...
accomodat[es] a vacuum producing material ....” P. 7, ll. 40-
42. As shown in Figure 43 of the reference, the “material
2003 is separated into ... parts.” P. 19, ll. 46-47. More
specifically, “there are high compression ratio portion A432,"
id. at l. 47, and “minimum compression ratio portion A434
....” Id. at 47-48. The Figure also shows that the portions
are in surface-to-surface contact with each other.
Because Koitabashi’s vacuum producing material is
separated into a high compression ratio portion and a minimum
compression ratio portion and the portions in surface-to-
surface contact with each other, we are persuaded that the
applied prior art discloses the limitations of “first and
second vacuum producing materials respectively having first
and second vacuum producing capacities respectively for
dispensing and storing ink, the first and second materials
being in surface-to-surface contact with each other” and
“first and second vacuum producing materials inside the
cartridge body and respectively having first and second vacuum
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