These cartridges are made mainly of plastic material making local recycling and local energy recovery possible. When local recycling is utilized. environmental impacts associated with the transportation of cartridges are reduced. To support local recycling and energy recovery. Canon has engraved a plastic resin code on each cartridge. Canon large-format ink cartridges are safe for local recycling and local energy recovery facilities.Compatible Printers: Canon imagePROGRAF IPF 830 MFP M 40. Canon imagePROGRAF IPF 840 MFP. Canon imagePROGRAF IPF 850. Canon imagePROGRAF IPF 850 MFP. Canon imagePROGRAF IPF 830. Canon imagePROGRAF IPF 840 MFP M 40. Canon imagePROGRAF IPF 830 Series. Canon imagePROGRAF IPF 850 MFP M 40. Canon imagePROGRAF IPF 840. Canon imagePROGRAF IPF 850 Series. Canon imagePROGRAF IPF 830 MFP. Canon imagePROGRAF IPF 840 Series