Originally Posted by
DanK
Now you have me really puzzled. I have had 4 Canon printers that use dye-based inks, including a Pixma Pro 9000 II, and I have had two of them plugged in next to my desk for perhaps 10 years. One of them is often turned off for many weeks, sometimes months, at a time. During all that time, I have never once heard one cycle on when turned off. I've also never had to replace a head or clean one manually.
I was also unable to find any reference to this in a quick scan of the Pro-100 manual.
Have you witnessed this with yours?
I'm wondering if this is a feature of the printers that use pigment-based inks, as those are more prone to clogging.
I'm puzzled, so I will send a note to Canon to see what they say.