I thought it'd has been a bet to make this old combo HP print and I've been using it as scanner because I had got no one... a quite "cumbersome" one indeed! Due to that I just waited months to get a good deal buying
this cheap compatible cartridge at my local Amazon when its cost went down under 10 euros.
I followed your tips (as I could understand them

) and:
- I put a piece of adsorbing paper upon the black color's pad and I made some printing heads cleanings to check if black ink'd has drained out or not and the paper was clean after 3 cleanings attempts (see my attachments before VS after);
- by the way W10 system sw lets me do a cycle of 3 cleanings and the 2nd one is defines "mild" and the 3rd one is defined "cartridges priming" so we can do this sort of heads priming by windows system though it's not mentioned in
HP user's guide so there's no way to do that pressing buttons nor by its proprietary sw because I can't install it on W10 as I said in my 1st post;
- I tried to print 5 times a quite colorful image but without success: still only blank pages.
Did I carry on my attempts properly based on your tips?
Is there anything else I could try before surrendering and using it only as a scanner?
Maybe it's a silly idea but what if I could drain out ink from the head by a sort of manual suctioning action? Anyway I'd rather not to suck it by my mouth
