I am getting regular horizontal absence of ink lines alternating with inked lines in my nozzle check. PGBK is perfect--no gaps. Light cyan and light magenta are also perfect. The darker cyan, magenta, yellow and photo black all have the problem.
I have changed the printhead twice now. Each new printhead solved an old problem; but created a new one ie. photo black second half of nozzle check missing. Now, all bars are complete; but there is regular skipping horizontally. I have done repeated cleaning and deep cleaning cycles, wasting a huge amount of ink; but, I'm like a dog with a bone. I'm technically oriented and I really would like to know what happened to my favorite printer. Head alignments have not helped and I have cleaned and reinstalled the current printhead twice.
Any inisight into the problem and possible solutions would be appreciated!
