Thermal Printing Problems: Blank, Cropped & Faded Bills

Blank output: check paper and orientation first

Star’s troubleshooting guidance identifies unsuitable paper and incorrect loading as possible causes of blank output. Follow the printer’s loading instructions and run its self-test. If the self-test also prints blank, changing invoice CSS is unlikely to resolve the underlying issue.

Cropped edges or tiny text: check width and scaling

Match the physical roll, driver paper size and template printable width. Look for A4 settings applied to a receipt roll, unwanted margins or fit-to-page scaling. Reflow a 4-inch layout before using it on a 58 mm printer.

Unreadable QR codes or barcodes: test the actual print

Keep codes high contrast with clear surrounding whitespace. Avoid stretching the graphic or shrinking it until its modules or bars merge. Print a test and scan it with the intended device. A successful screen scan does not prove the paper print will scan.

Faded output and faded stored receipts need different checks

For newly faint prints, check approved media and model-specific print settings; follow manufacturer cleaning guidance if the self-test is affected too. Stored thermal receipts can fade or darken after exposure to heat, sunlight, oils or chemicals. Preserve a digital copy rather than relying on paper legibility indefinitely.

Incorrect totals: fix the transaction, then reprint

A printer does not reconcile an invoice. If subtotal, discounts, taxes, payments and balance disagree, correct the source transaction and preserve a record of the correction. Reprinting the same preview will reproduce the same calculation error.

Illustrative bill calculations

Check the numbers before printing

Both previews show six item amounts: ₹265 + ₹175 + ₹116 + ₹28 + ₹140 + ₹42 = ₹766. They use sample date 6 October 2026. The invoice and receipt have different tax presentation and payment status; compare them as separate design examples.