Select System Preferences (or System Settings) from the Apple menu > Printers & Scanners (or Print & Scan or Print & Fax) and then select the printer.
Click Options & Supplies > Utility > Open Printer Utility.
Click Print Quality Adjustment.
Follow the on-screen instructions to print the adjustment pattern and scan it.
Close the document cover before scanning.
Adjustments are performed automatically.
When placing the adjustment pattern on the Scanner glass, make sure it is not folded or out of alignment with the corner mark, or it cannot be scanned. Then, select Start Scanning.
Even if a blank sheet is ejected, follow the on-screen instructions to scan. If you scan a blank sheet of paper, scanning
will fail. If this occurs, press the
button and follow the on-screen instructions.
If the problem does not improve even after performing Print Quality Adjustment, perform all available print head adjustments (nozzle check, cleaning, alignment adjustment). See the related information below for details.