Attaching The Spacer To The Spindle - Epson Stylus Pro 4000 Reference Manual

4. Slide the black movable flange (removed in step 1) onto the
spindle and into the end of the roll paper until it fixes into
place.

Attaching the spacer to the spindle

When you perform borderless printing on roll paper with a width
of 8 inches or 420mm (A2), you need to attach a spacer to the
spindle.
To attach the spacer to the spindle, follow these steps.
Note:
You cannot attach the spacer to the spindle when the gray attachments
for roll paper with a 3-inch core are attached to the spindle.
1. Slide the black movable flange off the end of the spindle.
2. Slide the spacer onto the white flange.
3. Slide the roll paper until it fixes into place.
4. Slide the black movable flange onto the spindle and into the
end of the roll paper until it fixes into place.
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Paper Handling