Why Is My Canon Printer Printing Blurry? Causes and Easy Fixes If you’re asking why is my Canon printer printing blurry, common causes include low ink levels, clogged printheads, incorrect print settings, dirty rollers, or poor-quality paper. Blurry prints can often be fixed by cleaning the printhead, aligning cartridges, updating printer drivers, and checking paper compatibility for sharper, clearer printing results.