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SECTION VI.
TYPE 122 PRINTER
. The Type 122 Printer may use either a six- or an eight-lines-per-
inch tape, depending on the format desired (see Figure 6 -2, page
6-3).
The physical processes involved in preparing both tapes are
identical, except that separate punches for preparing each tape
are used.
a.
Place the tape in the punch so that the two indexing posts
on the punch each mate with a sprocket hole in the tape.
b.
Punch the desired head-of-form location in channel one
(1) of the tape.
Channel one is the outboard tape channel
corresponding to the extreme left-hand cell as the opera-
tor faces the printer from the front.
c.
Punch the desired end-of-form location in channel two (2)
of the tape.
d.
To form the tape loop, grasp the ends of the tape (as it
rests in the punch) and loop them downward to make the
joint.
Spread a thin coat of glue on each surface to be
joined and press firmly together to form the joint.
The
tape is now ready for installation in the printer.
NOTE: If, and only if, all holes are punched opposite
sprocket holes, the tape may be used for either
six- or eight-lines-per-inch vertical format-
ting.
However, no more than one hole may be
punched opposite any given sprocket hole.
2.
To mount a vertical format control tape:
This tape is mounted on the sprocket wheel which is visible below the vertical
format head-of-form adjustment knob on the left side of the printing mechansim.
a.
Lift the curved control tape retainer clamp above the sprocket
wheel so that the control tape may be inserted between the lamp
housing and the cells.
b.
Place the prepared control tape over the sprocket wheel and between
the lamp housing and the cells so that the sprocket holes in the tape
mate with the cogs on the wheel.
The tape must be mounted so that
channel one of the tape (containing the head-of-form punch) is
furthest away from the body of the printer.
Return the tape re-
tainer clamp to the down position so that the tape is held firmly
in place.
c.
Depress the STOP button on the printer main control panel to
enable the FORM SPACE button to become effective.
d.
Depress the FORM SPACE button on the printer main control
panel to advance the control tape to the proper head-of-form
location.
NOTE: The printer must be in a normal, stopped condition,
i. e., with the STOP indicator illuminated, the type
roll up to speed, and all other indicators extinguished,
before the FORM SPACE button can become effective.
3.
To change a printer ribbon:
a.
Move the RIBBON switch on the auxiliary control panel of the
printer to the CHGE position.
The ribbon then rewinds onto
the supply mandrel without program interruption until the
6-11
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