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There are 2 types of FCT: 8-channel and 12-channel. Figure 4.11 shows a
12-channel
FCT, where each FCT sprocket hole corresponds to each line of
the form.
Punched holes, called channels,
indicate special positions of
the forms,
and are used for forms feed control by software. This is the
same as for 8-channel
FCTs.
When a new forms feed format is used, the old
FCT must be replaced with one for the new forms feed
fornLat.
The FCT is read automatically when the printer is turned on or when the
RUN switch on the FCT unit is pressed in offline mode. The RUN switch
enables a new FCT to be read.
Because the FCT unit determines that
channel 1 of the FCT is the start position, the FCT unit reads punched
hole data starting from channel 1 to the next channel 1 detected.
The data from the FCT unit is sent
.to
the interface control
(IFC)
microprocessor. Then, the IFC microprogram loads the data into the FCB in
the internal buffer.
Make an FCT as follows:
1.
2.
3.
4.
Punch a hole at the first column on the center line of the first
sprocket hole (channel 1 as the top of form), as
shlawn
in Figure
4.11.
For subsequent lines, punch holes according to the forms feed format.
Note that columns 1 to 12 (1 to 8 for an a-channel
FCT)
correspond to
channels 1 to 12 (1 to 8 for an 8-channel FCT).
For example, punch a
hole at the third column on the center line of the fourth sprocket
hole when channel 3 is specified for the fourth line in the forms
feed format.
For more examples, punch holes at the fifth and seventh
columns on the center line of the eighth sprocket hole when channels
5 and 7 are specified for the eighth line in the forms feed format.
Figure 4.11 shows these examples.
Punch a hole at the first column (channel
1)
on the sprocket-hole
center line corresponding to the last line of the print form and cut
the FCT there.
Align the center lines of the first sprocket hole (A in Figure 4.11)
and the last sprocket hole (A'
in Figure 4.11) of the FCT, glue
these
ends together,
and confirm that no punched holes are covered.
Notes:
1) Because channel 1 is defined as the BOF, there must be
one hole, which indicates channel 1, per print form.
2) The FCT should not exceed 255 lines.
3) An FCT must be longer than 10 inches so that the FCT can
be installed in the FCT unit. When the form length is
less than 66 lines for a
12-channel
FCT
(100
lines for
an
a-channel
FCT),
the same hole pattern
must
be repeated
once on the FCT to extend the FCT length.
4) The FCT used for this printer must conlorm to the
specifications shown in Section 4.5.
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