How likely are you to recommend HP Large Format Knowledge Center to a colleague?
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Not at all likely
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Extremely likely
I started seeing horizontal banding on the print a week ago. Printed the test plot and ink cartridge 6 (C/Y) was completed disappeared. We replaced the printhead, clean the electrical connection; however, the nozzle check was not good, channels were missing. We bought another C/Y printhead and put it, result turned out the same. We keep cleaning the printhead (C/Y) only and it has some improvement but been doing this for like 20 times but still not completely fixing the issue. Please look at the attached photo. Anyknow what is the cause of this problem? Thanks