For optimum performance we recommend genuine toner by KYOCERA Document Solutions. which is specially designed for your printer. Toner particles of the incorrect size can lead to poor print quality with streaky grey background or ghosting on the page. KYOCERA Document Solutions toner contains ceramic cleaning beads which are essential to ensure the printer drum is clean and particle free. This is particularly important as our drums are designed to last several hundred thousand copies.A KYOCERA original toner will either have the KYOCERA Document Solutions logo moulded into the toner cassette or the toner will have a green KYOCERA Document Solutions label on it with white writing including our logo.The imporatance of buying genuine consumablesKYOCERA has received evidence that non-genuine KYOCERA toners have been circulated. distributed and sold within our sales territories. It’s important to be alert to this issue because you as a customer can face serious technical problems from using counterfeit toners. Such damage caused will also not be covered by your warranty maintenance agreement.Compatible Printers: Kyocera ECOSYS M 3040 idn. Kyocera ECOSYS M 3540 idn