The Canon PFI-050 BK is a black pigment-based ink designed specifically for use with the imagePROGRAF TC-20, TC-20M, TC-21, and TC-21M printer series. This 70 ml refill bottle, offering a 70 ml cartridge capacity, allows you to maintain your printing workflow without frequent interruptions, providing a steady supply of ink for professional documents. Because it uses pigment-based chemistry, the resulting prints are both water-resistant and resistant to highlighters, which ensures that your technical drawings or business reports remain legible even if they encounter moisture or are marked up during review. The compact bottle is easy to handle, weighing approximately 0.29 lb, making the refilling process straightforward for anyone managing a busy office environment.