Canon Pro-1000 series Online Manual page 264

Note
• CO (Chroma Optimizer) ink is applied onto the print side of paper to adjust glossiness. This ink is also
consumed in order to keep printer's performance and ensure good print quality, even when not
applied onto the print side.
• The printer uses pigment ink. Due to the nature of the pigment ink, the ink on the printed surface may
be removed when being rubbed or scratched.
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