Mimaki JV4- Sudden change in red colors

[Osiris]

I am running a Mimaki JV4 and last week there was a sudden change in our reds from one print to the next. The problem seems to be with Magenta or Light Magenta because the only colors that seem to be changed are red colors, and colors containing red. It printed fine for the first job, then an hour or so later the same print job was run with a noticeable change in the red color. The print environment has not been changes and the dampers seem fine. Has anyone else had this problem? Can anyone offer suggestions on what the source of the problem could be?

 

[MachServTech]

care to post a pic of your nozzle test?

 

[Osiris]

The nozzle test seems fine. All the heads appear to be firing properly.

 

[Osiris]

If it will help, I could post one anyway.

 

[Rooster]

Did somebody choose the wrong rip settings on the second print run?

It's been known to happen from time to time.