Guys, till a few days back my HP printer black ink 703 for my HP Inket F735 was functioning very well but just day before yesterday my black ink has gone kaput. Now when I try to photo copy using only black ink it gives me out a blank page, when I print out a word document of black ink the resultant is a faded grey like page because my colored ink is alright. Half of my ink is still not used up, please suggest me what should I do. I dont have iso propyl alcohol at home, i have just cleared the ink copper heads using cotton swabs. Help me