Star Micronics NX-1020 Technical Manual page 43

1. Gap Adjustment Between Print Head and Platen
1-1. Measuring Gap Between Print Head and Platen
(1) Remove the upper case unit according to procedures
described in Chapter 4.
(2) Set the index lever [1] at step two.
Remove the ribbon guide [2].
(3)
Insert a thickness gauge [3] between the print head
(4)
[4] and the platen [5], and measure the gap.
(5) This measurement must be carried out at the center
[C].
(6) The standard gap value is 0.30 to 0.40 mm.
(7) If the gap does not lie within this range, adjust it by
following the procedure in item 1-2.
Fig. 3-2 Position of Adjustment Lever
1-2. Adjusting Gap Between Print Head and Platen
If the gap does not lie within the standard range, adjust it by
carrying out the following procedures.
(1) Remove the printer mechanism according to the
procedures described in Chapter 4.
(2) Unfasten the screw [6] securing the adjustment le-
ver [7] and the index lever [1].
Holding the index lever [1] at the position shown in
(3)
Fig. 3-2, shift the adjustment lever [7] for gap ad-
justment.
When the shaft is lowered to the platen side, the gap
is reduced, and when lowered to the opposite side,
the gap is expanded.
After adjusting, tighten the screw [6].
(4)
Fig. 3-1 Gap Adjustment
Fig. 3-3 Gap Measurement
Fig. 3-4 Gap Adjustment
– 39 –
ADJUSTMENTS