Replacing the Toner Cartridge. (MF8350Cdn/MF8050Cn)
Article ID: ART132005 | Date published: 05/12/2015 | Date last updated: 08/17/2015


Replacing the Toner Cartridge


Replacing the Toner Cartridges

If the message indicating the replacement of toner appears, replace the toner cartridge.

Attention (Replacing Toner Cartridges)

Do not dispose of a used toner cartridge in open flames.

This may cause the toner remaining inside the cartridges to ignite, resulting in burns or fire.


Precautions if you get toner on your hands or clothing

If toner gets on your hands or clothing, wash them immediately with cold water.

Washing with warm water sets the toner, making it impossible to remove the toner stains.

Be careful not to allow the toner to scatter.

Do not pull out the sealing tape forcefully or stop at midpoint, as this may cause toner to spill out.

If toner gets into your eyes or mouth, wash them immediately with cold water and consult a physician.

Precautions when closing the front cover

Be careful not to catch your fingers.

  • About replacement toner cartridges

For optimum print quality, when you replace toner cartridges, using Canon genuine ones is recommended.

- MF8350Cdn

Canon Cartridge 118 Yellow, Canon Cartridge 118 Magenta, Canon Cartridge 118 Cyan, Canon Cartridge 118 Black

- MF8050Cn

Canon Cartridge 116 Yellow, Canon Cartridge 116 Magenta, Canon Cartridge 116 Cyan, Canon Cartridge 116 Black

Be Careful of Counterfeit Toner Cartridges

Please be aware that there are counterfeit Canon toner cartridges in the marketplace.

Use of counterfeit toner cartridge may result in poor print quality or machine performance.

Canon is not responsible for any malfunction, accident or damage caused by the use of counterfeit toner cartridge.

For more information, see the following website.

Shake the toner cartridge before setting.

If toner is not distributed evenly, this may result

Do not leave the front cover open for a long time with the toner cartridges installed.

This may result in deterioration in print quality.


About the packing materials

The packing materials may be changed in form or placement, or may be added or removed without notice.

When the message <Replace <Toner Color> toner cartridge.> appears during receiving a fax

Printing the fax is interrupted and the received data will be stored in the memory.

If <Continue Printing When Toner Is Low> is set to <On>

You can keep printing fax documents or reports without replacing a toner cartridge. However, the printed documents may be light or blurred because of lack of toner. The data is erased when the documents are printed out, so you cannot print the same documents again.

Replacing the Toner Cartridge

1. Open the front cover.



2. Press the lever to pull out the toner cartridge tray.



3. Hold the toner cartridge to be replaced by its handle and pull it straight up and out of the machine.




Hold the toner cartridges properly.

When handling the toner cartridges, hold them properly as shown in the figure. Do not place it vertically or upside-down.

4. Take out the new toner cartridge from the protective bag.

You can open the protective bag with your hands from the notch.




Do not touch the toner cartridge memory (A) or the electrical contacts (B).

This may result in damage to the cartridge.

Do not touch the drum (A).

Print quality may deteriorate if you touch or damage the drum (A) at the bottom of the toner cartridge.

5. Shake the toner cartridge 5 or 6 times as shown in the figure to evenly distribute the toner inside the cartridge.

Do not remove the drum protective cover (A).



6. Place the toner cartridge on a flat surface.

7. Remove the tab, and the pull out the sealing tapes of all the toner cartridges.

Pull out the sealing tape (approx. 19 3/4" (50 cm) long) gently.




When pulling out the sealing tape

  • Do not pull the sealing tape diagonally, or sideways. If the tape is severed, this may become difficult to pull out completely.

  • If the sealing tape stops at midpoint, pull it out of the toner cartridge completely.
  • If any tape remains in the toner cartridge, this may result in poor print quality.

About disposal of the removed sealing tape

Dispose of the packing materials according to local regulations.

Keep the drum protective cover.

Keep the protective bag for the toner cartridge and the removed drum protective cover. You will need them when you remove the toner cartridge for machine maintenance or other purposes.

8. Remove the drum protective cover (A).



9. Install the toner cartridge.

Be careful not to let the drum impact the frame of the toner cartridge tray.



10. Push the toner cartridge tray.


Do not touch the high-voltage contacts (A).

This may result in damage to the machine.

Precautions when installing toner cartridges

The position of the toner cartridges in the printer is determined by the toner color. Install the toner cartridges in the slots that have labels of the same color.

11. Close the front cover.

If you cannot close the front cover, make sure that the toner cartridge tray is closed.

Do not try to forcefully close the front cover, as this may damage the machine.

After replacing toner cartridges

To maintain image quality, it is recommended to perform automatic gradation adjustment.