HP L26500 Headstrike

[yamaha581]

We have an L26500 that we have been using for awhile now and we normally print on 30" material with no problems but with the larger 54" material we are having a problem with getting headstrikes now.

We were using the Briteline material from Grimco and it would do it every once in awhile but we switched over to the Avery MP 12903 and have the profile they have listed on the site with the flexi rip. For some reason we are getting a headstrike on every print we have done. Is there something certain we should adjust on the profile to stop that?

 

[BIG EASY DOES IT]

Increase vaccum maybe. Carriage might be loose? Pictures. Is it grabbing the edge of the material or just grazing the surface in a certain area. Pictures.

 

[yamaha581]

Here is a picture of what it is doing. I was thinking on increasing the vacuum but wanted to check on here before we wasted more material.

 

[papabud]

that does look like a vacuum issue, i would make sure your vacuum holes are clear.. paper dust in them could cause an issue. and if you dont use that end of the machine a lot it can collect a lot of stuff

 

[bigben]

that does look like a vacuum issue, i would make sure your vacuum holes are clear.. paper dust in them could cause an issue. and if you dont use that end of the machine a lot it can collect a lot of stuff

+1 with that.

 

[I Branding]

i would watch your temperature also, whenever I print such a dark flood coat across the whole media width and temp. is too high it kind of bakes the material. Causing it to get kind of wavy.

 

[Ragnabrok]

just worked on one of these with a similar issue, the vacuum filters were absolutely blocked with crud. Took them out, cleaned them up with a shop vac and it held down way better after.

 

[jayarmstrong]

how can we access the vacuum filters?

 

[AF]

Don't forget to check for debris hanging off the bottom of the carriage.

 

[DougWestwood]

heat and vaccum

Gotta agree with other posters.
Vacuum yes, but the heat would warp your material and cause this, too.

Play with the temperature and you can find a spot where it's dry and flat.
Good luck!

 

[greysquirrel]

It's warmer out these days...check curing temp before vacuum...less 5 degree intervals until media settles...if the vacuum was fine last week..it should be fine today...