When evaluating these machines, prioritize the Print Head Technology (such as Xaar, Dimatix, or Seiko) as it determines the drop size (picoliters) and firing frequency, which directly impact image clarity. Ensure the machine supports a resolution of at least 360-720 dpi for high-definition tile production. Additionally, check the number of color channels; standard industrial machines usually offer 6 to 8 channels to allow for CMYK plus special effects like gloss, matte, or metallic inks. The conveyor speed should align with your existing kiln capacity, typically ranging from 20 to 70 meters per minute.