Ribbon Supply Unit - Intermec EasyCoder PX4i Service Manual

7.2 Ribbon Supply Unit

Description
Adjustment
EasyCoder PX4i and PX6i Service Manual
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The ribbon supply unit is the same for EasyCoder PX4i and EasyCoder
PX6i with the exception of the strength of the spring in the spring brake.
It is used to accommodate the fresh supply of thermal transfer ribbon. For
optimum printout quality and trouble-free operation, only original transfer
ribbon from Intermec should be used.
The unit is designed to keep the ribbon tight all the time in order to avoid
wrinkling, which would ruin the printout. It consists of a shaft on which
a hub is fi tted. The hub can pivot ± 1.3° on the shaft and the hub can be
moved sideways between 6 fi xed positions.
It is most important for avoiding ribbon wrinkling that the pivoting point
of the hub is centered in relation to the ribbon width. Therefore, the shaft
is provided with six grooves which correspond to the standard widths of
Intermec transfer ribbons (see table below). The three innermost grooves
are used with EasyCoder PX4i, whereas the three outermost grooves only
are used with the wider EasyCoder PX6i. By compressing the hub, its
snap-lock will disengage from the presently engaged groove and the hub
can be moved sideways to another position. Make sure that the snap-lock
has engaged a groove by trying to move the hub without compressing it.
Ribbons with a width less than 55 mm (2.16 inches) can be used provided
they are wound on a core with a width of at least 45 mm (1.77 inches).
Ribbon Width
55-60 mm (2.16-2.36 in)
88-90 mm (3.5 in)
110 mm (4.3 in)
130 mm (5.1 in)
154 mm (6.0 in)
≤ 166 mm (6.5 in)
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Chapter 7 — Transfer Ribbon Mechanism
Position (groove) Note
1:st (innermost) PX4i only
2:nd All
3:rd All
4:th PX6i only
5:th PX6i only
6:th (outermost) PX6i only
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