Hi John, Thanks for your reply. I do use W10 and did update a few days ago, however I haven't had the specific problems people are reporting. Incidentally I did reinstall the printer driver earlier today, which did not resolve the issue.
I am having a very similar issue. My Canon Pixma Pro 100 has been working fine for the last three years. Last week it started printing undersaturated, lower quality images. I use Canon paper, Canon ink, and am printing from the same files as before. ...