Hello folks,
I am really sorry to revive this "dead" thread. But there is a question I would like to ask you.
I have been able to get rid of the banding issues I had by doing the manual head alignment. I didn't expect much of it, I just wanted to see how it works. The LLK was off a lot and caused the banding. That's funny because the black channels are having the issues with the broken pattern.
It's great that it worked though because now I can print smaller formats in really good quality as there are no printhead issues visible.
But this also makes me wonder...
I have attached the alignment pages and as you can see, the printing quality towards the end of the pages really suffers. Distorted lines, some parts missing almost completely. That really looks messed up. This must be the part of the print head where the damage is.
But when I do 'real' prints, the effect is not visible. Yes, of course, it may be because the black is mixed with the other colors, too, but: If the printhead is damaged, why are these damages appearing ONLY towards the bottom of the pages? Why not over the whole pages? The printhead is kinda small, it needs a lot of passes over a letter sized sheet. Why aren't the damages visible in a regular pattern, for example every 2 inches (or whatever the height of the head is)?
Any ideas? Sorry, I don't want to bother you, I am just curious and I would like to understand this machine. I don't have high hopes in terms of fixing it, but I would like to understand what's happening.
Thank you and kind regards!