(2) Format specification by format control tape (FCT)
The FCT is a looped paper tape with punched holes and sprocket holes for
feeding.
The punched hole data is read by the FCT unit and sent to the
printer to notify it of a forms feed format. Figure 4.11 is an example of
the FCT and shows the relationship between a forms feed format and punched
holes.
(Perforation)
I 0
____ --------------
---;-.
Channel 1 (TOP of form)
!,
Channel3
Channels 5 and 7
Channel3
I
I
I0
Channel12
I
I
IO
A’
______
-------------
i
4
1--
(Perforation)
!o
A
EGLUE
.Sprocketh
s
Figure 4.11 An example of FCT and forms feed format
B02P-1500-OOOlA...O5
Channel number
Channel
1
, Punched hole
Cut here
4
-
17