Brother GTX600NB Instruction Manual page 186

(4) Remove the flushing foam from the maintenance unit.
<IMPORTANT>

Ink droplets will drop off from the hole in flushing foam. After removal, apply a waste cloth to the bottom face.
<NOTE>

For a proper work operation, be sure to wear the printer-provided gloves.
(5) Wipe the gloves with a waste cloth.
Precautions to keep good printing quality/use printer over the long term
Waste cloth
Gloves
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