Appeal 2007-1908
Application 10/442,950
1 48. “The apparatus shown in FIG. 5 is an apparatus for determining
2 positions of heads.” (Seki, col. 1, ll. 16-17).
3 49. “By repeating the abovementioned operations, a number of
4 heads 2 are successively located at their predetermined position.”
5 (Seki, col. 1, ll. 63-65).
6 50. To accomplish the above object, there is proposed according to
7 the present invention an apparatus for determining positions of
8 a plurality of heads slidably disposed on a shaft wherein each of
9 the heads is located at a voluntary position on the shaft by
10 repeating the operational steps of displacing the heads as a
11 group of at least more than two heads by pushing them from the
12 rear side with the use of substantially single shifter adapted to
13 move in parallel with the shaft and parting away from the
14 shifter one head at the rearmost end among the moving heads
15 when the shifter reaches a predetermined position, characterized
16 in that the apparatus is provided with means for limiting
17 forward displacement of a head at the foremost end among the
18 heads which are displaced by means of the shifter. When the
19 shifter pushes a group of heads from the rear side and stops its
20 movement, the aforesaid limiting means limits forward
21 movement of the foremost head and thereby inertia movement
22 of the group of heads can be prevented reliably.
23
24 (Seki, col. 2, ll. 29-48).
25 51. In the case where all six heads 2 on the driving side B are
26 displaced to the controlling side A, the DC motor 23 rotates so
27 as to rotate the support shaft 17 via the pulley 21, timing belt 24
28 and pulley 26. The pawl 16a of the pusher 16 located closest to
29 the frame 4 on the driving side among the plural pushers 16 on
30 the shifter is indexed at the position where it contacts the head
31 2. On the other hand, the head 2 located on the foremost end on
32 the controlling side A comes in contact with the stopper 19 so
33 that the head 2 is clamped between the stopper 19 and the
34 pusher 16 (see FIG. 3).
35 Next, when DC motor 13 mounted on the shifter 12 is
17
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Last modified: September 9, 2013