Indigo 5600 Color Variation Problem

[Travisimo]

Hello All,

I'm experiencing a problem on my 5600 Press, the color is varying from the leading to the trailing edge, exposing a cyan to magenta hue on the image, here's a rough photoshop rendering illustrating my issue:

I've tried everything that I can think of under the sun, PIP Changes, Blanket Changes, Conductivity Calibrations, Ink Rebuilds, Ink Rebuilds with Calibration Cans, Scorotron Cleaning and Replacement, Gripper Changes, Imaging Oil Filters, Ozone Filters, Laser Window Cleaning, you name it I've done it, if anyone has had a similar issue and has a clue to a cause of or solution to the problem your help would be much appreciated!

Thanks in Advance!
--Travisimo

 

[Kingie]

Do you calibrate the colour flow to the bids?

Do you have the same result with oneshot?

 

[Travisimo]

We did calibrate the color flow, unfortunately we don't have Oneshot authorized on our press.

 

[Kingie]

Hmmm, this really seems wreid.

does the problem only exist in cyan/magenta? What happen when you change the color order? How looks one single separation?
i think, you had already check the grounding clips?



Hopefully, my english isn't too bad.

 

[Mark Flanders]

I've seen this before, and it is perplexing. It usually goes away after a while. I've done all the same things you mention. Usually a color cast suggests an ink rebuild, but on the same sheet...(?!) the suggestion above, to change the print order is interesting, but I tend to think it might be related to the PTE lights. These are supposed to clear the charge on the PIP...maybe they aren't do a complete job all the time between colors. Try replacing the light panel, or swapping with another machine. Good luck!