My Value Jets keep Buckiling and Head Striking

What material? Are you unrolling any slack from the roll before printing?

*** Here is a pic for all to see

 

Sounds like the core in the roll may be out of round and can cause the roll to get loose or unwound looser on one end...

 

Funny question but is your printer level? I have seen rolls move left or right when being printed and therefore will cause the material to buckle or raise off the platen on one side. If the printer is level, bubble between the two lines , then I would suspect the roll itself is out of round a little.

 

I doubt it. The next time you notice it, take a picture of each end of the media, showing the ends to see if one side is slightly more unraveled than the other...

 

I meant while the roll is still on the printer.

 

Have you recently had the back cover off?

 

That makes no sense... How are your heaters set and what type of media?
Are you doing or using anything different from before when it worked fine?
Something has to have changed in the scenario...

 

I would expect you are using the take up, with the lengths you are talking about. Make sure the take up is level. This will cause the media to jog to one side.

On the 1614 you have a little metal piece on both rear feed media brackets. They have 2 screws on them. Losen the screws and engage the locks, then tighten them back up. This will prevent the roll from free spooling. I have found this to help on most materials running straight. You might have to free them up on heavy rolls.

 

If it ONLY occurs when you use the take up, you can check the take up alignment:

ftp://ftp.mutoh.com/Videos/VJ 1604 Instal Video/
VJ1604TakeUp.wmv

 

Loading or media
To check loading

Place a piece of tape on the platen under the media sticking out from the media.
Make a mark at the edge of the media.
Feed out about 5 ft and check your mark, should be right on.