Canon Pixma MP640 and related Printers - Ink Absorbers.
Brother Mfc-J415W inkjet printer with a ink absorber full error. | All ink jet printers have a waste area that collects extra ink, in most cases the area it is stored is
Brother MFC-J4410DW: How to Clear the Ink Absorber Full Message/Error - YouTube
How To: Resetting the ink absorber pad on the Brother MFC-J995DW | mattgadient.com