Canon PIXMA printers guzzle ink in duplex mode

Canon PIXMA MP970

Canon’s PIXMA printers have a defective duplex mode. (Duplex is where you print on both sides of a page.)

Canon says that when using duplex mode, “grayscale will be created using a combination of the color (dye) inks to prevent smearing.” Even when you print black and white, the printer still approximates the black color using the color tanks.

This is stupid:

  • Gratuitous waste. Color inks are expensive.
  • Duplexing is slow. Color printing considerably slows printing.
  • Poor quality. Approximating black with color inks produces a murky, greenish black, not a true black.

Summary: to prevent smearing, they make the printer use more ink. Does that make sense? Maybe if the goal is to sell more color ink cartridges!

  1. [...] support days. My current printer, a Canon Pixma MP-970, is junk. Ink’s too pricey, and Canon rigged it to drink ink in duplex mode. Drivers feeling like a product rushed out before usability testing. After just 2 years old, prints [...]

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