All
I am having an ongoing issue with cross contamination on HP colors and Lex colors.
I know it's an "ignorance" issue, so please be kind .
The carts all print test / blot test great when I'm done filling. (w/vacuum )
I then tape the print heads and put them in clips.
I can check them every day--all good---retape and then at some point they contaminate
Sometimes in a day , sometimes in a week, I have contamination.
Not completely, just yellow / cyan to make green Cyan is fine--magenta is fine.
This is just a color example and is not the same on all carts
It's not always the same. The cross is not even always coming from two abutting printheads.


I think that I am contaminating thru the print heads, since I can usually run the carts thru my printer, and after a few test pages, the issue seems resolved.
Any help would be greatly appriciated.
Ken