I've been using my Canon ImagePro 300 for a year now, happy with the quality, but I noticed a very worrying behaviour regarding ink. I'm on my 2/3rd set of inks (for some colours) and just replaced two cartridges again, this time C0 and Y as they "run out".
Out of curiosity, this time I weighed new full vs empty cartridges, and the difference was only 10g in both cases. I thought the C0 could be a very light liquid, but yellow pigment ink is surely denser and heavier than pure water, so I'd expect the difference to be closer to 14g. I could hear some sloshing inside, and once I squeezed the sides of the "empty" yellow cartridge, quite a lot of ink came out, a literal puddle on paper towels that took a good moment to absorb - see the photo below.
If I'm correct, that's at least 4ml, or 40% of the contents going to the bin just because my printer says so. £60 per set in the best case of getting a full set of 10, even more when they're bought individually.
I'd be curious if anybody here with the same printer could weigh their empty cartridge and the replacement to compare.
