Problems Printing Dark Blues on Mimaki JV3

[Russell Huffer]

Can not shine any light on your problem but will watch this thread as we had a job to do the other day and this was large blocks of solid blue almost navy and these printed with very strange lines/variations through them.
I have a Mimaki JV33 using Wasatch RIP so not a million miles from your setup.

Kind regards

Russell.

[Chris Wool]

yes has been a slight problem, i found the heat was too high causing the vinyl to become slightly unstable,now down to 35 deg. dark blues are around 250% ink so the vinyl has to be able to take it.
also double check feed calibration and bi-directional alignment makes such a difference with banding. along with head speed, full scan print should be on as this gives each print pass a equal time between the next, allowing the ink to settle in a more controlled manner.

[Stafford Cox]

I would say from your explanation that it is most likely to be a print head calibration problem. Have you had any work done on your printer lately? As much as i don’t know that particular RIP, I doubt very much it is causing that sort of problem

Stafford

[Praveen Jayawardene]

Hello ,

i did have a tech put a new black head in recently. Was a mimaki tech and was suppose to do all the calibrations.

Do you think this could be related?

[Stafford Cox]

Possibly. Obviously I’m only going by the small information I have been given so far so I don’t want to speak badly of whoever it was. It sounds likely to me that it’s the slant adjust that’s out, that CAN cause similar problems to this, as can some of the other calibrations for that matter. When you say it was a Mimaki tech, do you mean somebody from Hybrid?