Hi! So I recently bought this printer MX475 and I know it's kinda old but it was in perfect condition. I have used it a lot and than the black ink was over so I replaced it. Bought an original FINE cartridge. It was printing great enough. After a couple of days, black texts and photos' quality was looking bad as if they were an old quality picture maximized to a 4K screen. Anyway I have been trying everything. I have replaced cartridges, cleaned the encoder strip, cleaned printhead multiple times. Nothing worked and.
And I just realized that when I print things with my mobile phone. They come out near perfect. The texts are readable but because it's printing very fast, sometimes prints can come with white lines. And using the PC at Plain Paper-Standart quality makes them come the same way mobile phone does but I don't want that. I need to use the high quality settings. Thank you for helping me and sorry for my bad English.
If a nozzle check is giving you good results you could try a head alignment.
Are you using Canon ink cartridges? I tried saving money by using third party cartridges but got poor results (but my bad results were visible in a nozzle check).