Brother PAPER PULL-IN ROLLER D00PYK001 is a printer paper-feed component listed in Brother’s parts reference for the DCP-J772DW, DCP-J774DW and MFC-J890DW. It is identified specifically as the paper pull-in roller, the part associated with drawing paper into the printer’s feed path.
The parts list specifies 2 rollers for the engine section. This gives a useful reference when identifying the component in the parts documentation for those listed printer models.