HP 360 banding help

[Huntin2]

A few months ago we received a HP 360 printer and as of now it was printing perfectly but today we are experiencing banding in our prints. We are trying to print on 3m controltac adhesive vinyl using the 3M driver. We have cleaned the heads and calibrated the machine with no change. Do the heads need to be replaced? Any help would be appreciated.

 

[qmr55]

How much ink fired through each head? Do you have two low carts?

 

[Huntin2]

Op 938 ml , lm-lc 1758, c-k 966 & 969, y-m 869 & 887.

 

[Andriy]

Run the Print all test plots and see if you can get any information out of that.
Might just be a bad print profile.

 

[Huntin2]

The print all test didn't show me much but banding. We tried different medias and drivers with no improvement. What firmware is everyone using?

 

[dypinc]

What is the frequency and direction of the banding?

 

[Kwiksigns]

sometimes heads do go bad while in warranty... I would contact hp and send them the serviceplot. they usually send me a head overnighted if it indeed has gone bad

 

[twmiller24]

Go to "clean nozzles" and print a test plot. Look for lines that have faint dashes instead of straight lines. I think a print head is bad ... probably LM/LC.

 

[Asuma01]

I've noticed that the test prints will print completely fine. But try to send a normal print through and its misfiring all over the place. Just had a cyan head acting up. test prints looked fine. but blues were banded and misfiring. I fixed it by replacing the head but had to guess which one was bad. I got lucky on my first try.
Its been frustrating lately dealing with HP printheads.

 

[Bly]

We had problems with magenta and light magenta heads failing prematurely.
Our supplier came and installed a beta firmware which seems to have cleared up the issue.

 

[Davo]

We had problems with magenta and light magenta heads failing prematurely.
Our supplier came and installed a beta firmware which seems to have cleared up the issue.

This... our supplier also recommended using this beta firmware but we have taken steps to only print in 4 colour anyway. I'm not comfortable being a guinea pig on our production machines.

or, I would try turning the OMAS off or on and see if it improves things... I know we have banding and huge size discrepancies with this sensor on some medias.