Datamax h-class h-8308p Operator's Manual page 27

B. In the direction appropriate for the ribbon type being installed (Coated Side In or
Coated Side Out), slide a Ribbon Roll completely onto the Ribbon Supply Hub, as shown
below.

The coated (inked) side of the ribbon must face the media.
Coated Side In (CSI) Ribbon
C. Route the ribbon under the Ribbon Idler then out the front of the printer.
Coated Side Out (CSO) Ribbon

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