What the results mean on an inkjet
- Gaps, white lines or a missing color in the nozzle check: Epson and Canon both use the nozzle check to find gaps, and tell you to clean the print head when it shows them. See how to read a nozzle check and how to clean a print head.
- Blurry text, doubled or crooked vertical lines: Canon and Epson point to print head alignment. See how to align a print head.
- Everything faint: check the ink first. Canon notes that its nozzle check will not print correctly when ink is low. See how to check printer ink levels, and remember the level shown is an estimate.
- Colors look wrong but no ink is missing: compare the color test page with the CMYK test page, and see wrong colors.
- Horizontal bands: look at the smooth gradients on the photo test page, and see banding. For white or dark lines, Epson’s steps start with a nozzle check and cleaning, then print head alignment.
- A color cast in the grays: on the grayscale test page, the black-only row and the mixed-color row should both look neutral. A brown, green or blue cast means one ink is out of balance or the driver is mixing color into gray. Compare a print with the driver’s grayscale or black-only option, and run the nozzle check.
- White edges on the borderless test page: borderless printing has to be turned on in the driver, and it may be offered only for some paper sizes or types. See the borderless test page.
Inkjet or laser?
Inkjets use liquid ink and a print head with nozzles, so a nozzle check is the most useful first test. Laser printers use toner and have no print head to clean or align. If you have a laser printer, use the laser printer test page instead.
Not sure what is wrong? Start at fix a problem, or see every sheet on the test pages list.
Sources checked: Epson, white or dark lines in printout (L1210), aligning the print head for grainy or blurry printouts (WorkForce 520) and checking ink levels (ET-4550). Canon, maintenance procedure (TS6300) and printing the nozzle check pattern. Last checked 2026-10-06.



