... solid blacks 3 throughout 3 life cycles at least drumrum of C3903A:strong brand products , Duarion , long life, at low price ... C6511A HP2320,2400,2420d,2430dn,2430dtnBlue C4127X HP4000, Canon Laser Class 3170,3175,LBP-1760,52X,P730Blue Q8061A HP4100 Blue Q1338A ... HP4200,4250,4300,4345 Blue C4129X HP5000,5100,Canon/mage Class 2550,LBP-62X,1620,1820,LBP850 Blue Q7516A HP5200,LBP ...