Intermec EasyCoder PX4i User Manual page 45

Chapter 4 — Loading Media
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4 Remove any empty core from the media supply hub.
5 In the case of a media roll with a 76 mm (3 in) core, fit an
adapter on the media supply hub.
6 Fit a new roll of media onto the media supply hub and push
the roll inwards as far as it will go.
EasyCoder PX4i Bar Code Label Printer User's Guide (IPL Version)