Why is the happening...? Workhorse Cutlass 6/8 automatic

[im_mcguire]

I can not get this fixed.  Platens 6,7,and 8 all fall out of register on tight registration.  I have 3 px of trap on my white base.

In the picture the shirt on the bottom was printed on platens 1-5, and on 6-8 they fall out of register like the shirt on the top.

All of my screens are new screens from Spot color Supply.  Fresh 70/90/70 squeegees.

When I check, the platens are level. Off contact is the same as platens 1-5.  Im just at my wits end... any help would be appreciated!

[Doug S]

I've never seen a Cutlass but is it possible the bolts holding the problem pallets might be a little loose?  Are  they out of register in the same direction each time?

[cleveprint]

that was going to be my reply. when we had our first diamondback installed years ago, this was happening on two pallets. tightened them up at it was fine. they didn't seem loose, as in seeing the pallets wiggle, but i cranked them down hard and it seemed to work.

[tonypep]

Is the UB choked?

[3Deep]

Looks like to me the only color that is out is the white base,  I would print the white base then go one color at a time to see which color is out or print all my top colors and see if they all register to each other.

[Frog]

Is the UB choked?

I have 3 px of trap on my white base.

[Prince Art]

Is your tack fresh & equal on all pallets? Very recently I had a job where I thought all pallets had enough tack, but was having reg issues. Couldn't find anything else to fix, & when I refreshed the tack & the problems went away.

[tonypep]

Not entirely sure why is the happening but if its consistent on platens 6 and 8 thats a tell

[blue moon]

the image on the top has cleaner edges and less gain so the ubase is showing up. The bottom image is fuzzy from all the ink that mushroomed out and that little extra is causing it to cover the ubase that would normally peak.

If your platens are level, some might be higher then the others causing more pressure and stretching the mesh more. Not very likely, but ink gain should be one of the clues. . .

pierre

[Binkspot]

If the simple fix like loose pallets, pallet arm, off contact and level are not the culprit then the press is out of reg. If it happens the same on every job on the same pallets it’s out of reg and the bearings need to be reset.