ink dots rubbish printer

[leehilton90]

I have an L805 which has been an absolute pain printing slanted and every print comes out with black edges. I have found a way around them But I have this annoying thing where I will have random dots of ink on that are almost impossible to see but when you print it on a mug a single small blue dot on a white part ruins the mug and this is a constant issue. Is there a work around or what is a better print to avoid all these issue?