Appeal 2007-1908
Application 10/442,950
1 Appellant invented a method of switching arrangements of cutting
2 knives to change the slitting width in a slitter for slitting a wide sheet into a
3 plurality of narrow strips, by a plurality of cutting knives arranged at
4 predetermined intervals (Specification 1).
5
6 The only independent claim under appeal reads as follows:
7 3. A method of switching cutting knife arrangements, from
8 a current one of n-sorts of cutting knife arrangements to another one
9 of said n-sorts of cutting knife arrangements, in a slitter for slitting a
10 wide sheet into a plurality of narrow strips by use of a plurality of
11 cutting knives mounted on a shaft extending in a direction
12 substantially normal to the direction in which the wide sheet is fed,
13 the switching cutting knife arrangements being controlled by a
14 controller, the method comprising:
15 returning the cutting knives individually from respective
16 positions for said current one of said n-sorts of cutting knife
17 arrangements to respective origin positions according to one of
18 predetermined n-sets of knife returning programs for said current one
19 of said n-sorts of cutting knife arrangements, each of said
20 predetermined n-sets of knife returning programs being stored in a
21 memory; and
22 moving the cutting knives individually from said
23 respective origin positions to respective positions for said another
24 one of said n-sorts of cutting knife arrangements according to one of
25 predetermined n-sets of knife positioning programs for said
26 another one of said n-sorts of cutting knife arrangements, each of said
27 predetermined n-sets of knife positioning programs being stored in a
28 memory.
29
30
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