Any ideas why the curvy test print?

[tcorn1965]

I have a Mimaki JV3-160. I am getting a lot of over spray on the cyan.
I have done a head wash with the cleaning carts because the Cyan was not printing. It prints now with over spray. I test a test print and the cyan looks curvy up and down, instead of straight like the others. like the head might be defective???
Anyone know what would cause this?

Thanks in Advance,
Terry

 

[Letterbox Mike]

Do your prints look curvy like that too? If so, clean the encoder strip to see if that helps. Honestly I don't know if the encoder strip is functional when printing test patterns but I would assume so. That looks like the symptom of a dirty one though.

 

[tcorn1965]

Do your prints look curvy like that too? If so, clean the encoder strip to see if that helps. Honestly I don't know if the encoder strip is functional when printing test patterns but I would assume so. That looks like the symptom of a dirty one though.

Prints look OK, except for the over spray on Cyan. Thanks for the quick reply-walking over to clean the encoder strip now. Thanks!

 

[Letterbox Mike]

Like I said I may be totally wrong, it's the only thing I can think of, aside from maybe just buckling media causing nozzle deflection...

 

[tcorn1965]

Cleaned encoder, still the same. I could be wrong but the media does not appear to be buckling.

Thanks,
Terry

 

[scallahan]

If you have a spare you might change the printer head cable, or you could swap it with one of the other cables and see if the problem clears up or moves.

 

[DrunknMonk]

I had some weird print problems, tried everything, then changed the print head ribbon cables everything was then sorted, hope this helps

Gary

 

[rofo]

I´ve seen that many times. Usually the head is dead and should be replaced ... What you can do is to cross the cables with different head to see if the problem remains on the same head. If so replace the head ...

 

[tcorn1965]

I´ve seen that many times. Usually the head is dead and should be replaced ... What you can do is to cross the cables with different head to see if the problem remains on the same head. If so replace the head ...

Thanks Guys for the good ideas, I switched the cables around and the problem is still there on same head, must be a bad head. I have a tech coming in this week to replace heads and capping station. :U Rock:

Again Thanks,
Terry

 

[mrblaq]

Have you installed new dampers recently? If not, replacing those would be a good step to take before you throw down a lot more money for a new head and billable hours.