Fix Common Paper and Printing Problems: Curl, Jams, Cracks | Valenna

How to Prevent Paper Curling

Most paper problems have a simple cause: moisture, the wrong paper for the printer, an unsuitable tray or setting, or folding without scoring. Find your problem below.

๐Ÿ› ๏ธ Quick finder

ProblemMost likely causeFix
Paper curlsMoisture imbalance, heat, heavy coverage, wrong media setting, poor storageStore flat and wrapped, acclimatise, correct paper type and GSM setting
Cardstock jamsWeight unsupported in the tray, tight paper pathRear feed or bypass, heavy-card setting, fewer sheets
Cardstock cracks on the foldFolded without scoring, against the grain, heavy toner on the foldScore first, fold with the grain, keep heavy coverage off the fold
Ink smudges on coated paperPaper not inkjet-compatible, too much ink, handled before dryingUse inkjet-rated paper, correct media setting, let it set
Toner flakes or cracksCoating not laser-compatible, too little heat, weight outside the limitUse laser-rated media, heavy or coated setting, score before folding

๐ŸŒ€ Paper curl

  • Store paper flat and wrapped in a stable, dry room, and let it acclimatise before printing.
  • Use the correct paper type and GSM setting, and load in the orientation the manufacturer recommends.
  • Let printed sheets cool and rest flat. If curl persists, test a different compatible stock.

๐Ÿ“ฎ Jams with thick cardstock

  • Check the printer supports the weight in the selected tray.
  • Use a rear manual feed or bypass tray, set the heavy-card media type and load only the recommended number of sheets.
  • Do not force unsupported stock through. Test a small quantity first.

๐Ÿ“ Cracking on the fold

Score the sheet before folding, use an appropriate crease width and fold with the grain where possible. For digitally printed work, keep heavy coverage away from the fold, or test whether lamination or a different stock helps.

๐Ÿ’ง Ink smudging on coated paper

Confirm the paper is made for inkjet, select the correct media setting, print on the printable side and avoid stacking wet prints. Laser-only coated paper is not a substitute for inkjet coated paper.

๐Ÿ”ฅ Toner flaking or cracking

Use laser-rated media, select the heavy or coated-paper setting and confirm the tray limit. Avoid putting heavy toner coverage directly on a tight fold.

๐Ÿ’ก Tip: always test the actual stock and design on a single sheet before a full run.

โ“ Frequently asked questions

Is it a faulty paper?

Not usually. If problems persist with a compatible, correctly set up paper, send us the order number, photos and your printer model.


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