pgbk

So I recently printed a load of stuff on my canon, had a few jams but nothing major, but now when i'm trying to print, my PGBK ink is always streaky in the same pattern, like so. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...