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Figure
17. Bad splice showing star wheel (a) catching
on
edge of tape and
starting
to roll into
position,
(b) straddling
the following perforation
Reading
errors
can be
prevented
by
observing
proper techniques in splicing the tape
as
follows:
a.
The tape
should
be
cut straight across
through the
center
of the sprocket hole as
shown
in
Figure 18
.
This
permits the star
wheel to slide into the perforation properly,
or if
no per-
foration
exists,
the
star wheel will roll over the splice and yet
be in
position
to
read a character
on the next step. Allow approximately 1/2 inch for
splice
overlap.
b.
Taper the ends
of the tape
prior to
cementing with
sandpaper. A fingernail board
is
an
excellent
tool for
this purpose
.
c.
Apply a light
coat of contact
cement to the tape ends, and after drying thoroughly,
sand
the joint
smooth.
·
0
0
00 0
0
0
0
00 0
0 0
0000000
00
0
0
0
0
0
0
TAPE
CUT
~HROUGH
CENTER
OF HOLES
~TAPERED EN~S
0
0
,l
0
o
yo
0
0
I
0
s
0
0
0
0000
00
00 A
0
yO
0
0
Flgure
18. Bl-directional Tape
Splice
SEATTLE
Page 16
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