Canon PIXMA TS6420a
is not printing black.
Canon PIXMA TS6420a is not printing black? Missing black usually points to a blocked nozzle, an empty or unseated black supply, a low-quality setting, or a toner path that needs attention. For this Canon PIXMA TS6420a, pay special attention to Canon PRINT, FINE cartridge seating, and rear-tray media alignment.
Try these in order.
Stop as soon as the printer behaves. Each step removes one likely cause without changing settings you may need later.
- 01
Run a quality or nozzle check
Print the built-in quality page before cleaning. It shows whether the failure is isolated to black and gives you a baseline for the next check. On the Canon PIXMA TS6420a, use Canon PRINT or the printer control panel for this check.
- 02
Reseat the black supply
Remove and reinstall the black cartridge, confirm the tank vent is open, or reseat the toner and drum assembly according to the model guide.
- 03
Run one standard cleaning
Use one normal printhead or drum-cleaning cycle, wait for it to finish, and print the quality check again before trying a deeper routine.
Usually one of these.
- Canon PRINT, FINE cartridge seating, and rear-tray media alignment is the model-specific checkpoint to verify first.
- The black nozzle or printhead has dried ink buildup.
- The black cartridge, tank vent, or toner assembly is not seated correctly.
Move to the deeper fix.
Check the paper and driver settings
Choose the correct paper type, turn off draft mode, and confirm the document is not set to color-only or composite-black behavior.
Use the official maintenance routine
Follow the manufacturer sequence for deep cleaning, printhead alignment, or toner calibration. Stop if the guide warns that repeated cycles can damage supplies. Use the official Canon support page for the exact Canon PIXMA TS6420a package before changing firmware or resetting the device.
Before you reset everything.
Why do colors print but black does not?
Black uses a separate nozzle, cartridge, tank channel, or toner path. A color page can look normal even when that black path is blocked or empty. On this model, start with Canon PRINT and the official support instructions.
Should I keep running cleaning cycles?
No. Start with one standard cycle and a quality check. If there is no change, use the model-specific deep-clean or service instructions once.
Use the exact model guide.
These links point to the manufacturer support results for this model. Use the manual for panel symbols and the driver page for software or operating-system issues.