HP 2566C - Manual (Page 24)

Put on the plastic gloves. Remove the old ribbon spool from the drive
hubs by sliding it to the left (Figure 3-2, A). Roll up the slack and
place the spool in the retainer cups (Figure 3-2, B) at the rear of the
swing-gate. Close the upper ribbon access cover.
2. Remove the ribbon spool.
3. Open the swing-gate.
Open the swing-gate by pushing down on the release lever (Figure
3-3, A) and lifting up the handle (Figure 3-3, B) until it latches at the
top.
PREPARING THE PRINTER FOR OPERATION 3-3