Wrinkles in cross folds
Medium severitySymptoms
Puckering at the second fold (air pocket)
Probable causes
- Trapped air
- heavy paper unfolded without creasing
- misadjusted rollers
The Print Guy · 2026-10-05
Other problems in this category
Folding · TPG-218
Fold out of square
Pages don't line up; visible stagger at the signature front
Folding · TPG-219
Ink flaking at the fold
Ink or coating cracks right on the fold
Folding · TPG-224
Recurring jam at the fold pocket
Sheet crashing against the pocket or jamming inside
Folding · TPG-225
Progressively skewing fold
Job starts square and drifts crooked
Folding · TPG-227
Static in the folder
Sheets sticking together, doubles, chaotic delivery
Folding · TPG-220
Roller marks on the print
Shiny or friction streaks in the folding direction