German ink maker OCP has announced the availability of inks for refilling Canon PG-540/PG-540XL and CL-541/CL-541XL cartridges. Canon announced these black and tricolor integrated inkjet cartridges in 2011 in inkjet devices using its “Fast Front” System. In the United States, these cartridges are known as the PG-240, PG-240XL, and PG-240XXL black cartridges and CL-241 and
