How to Refill a Brother TN-420 or TN-450 Cartridge

Learn how to refill your TN-420 or TN-450 cartridge to save 85% on your printing costs and help protect the environment!

Category:

Howto & Style

Tags:

• how
• to
• refill
• brother
• tn420
• tn450
• tn-420
• tn-450
• tn2210
• tn-2210
• tn2220
• tn-2220
• cartridge
• printer
• toner
• kit
• gear
• flag
• reset
• compatible
• instructions
• dcp-7060
• hl-2230
• hl-2270
• DCP-7060D
• HL-2230
• HL-2270DW
• mfc-7680
• MFC-7860DW
• dcp-7065
• DCP-7065DN
• HL-2240
• mfc-7360
• MFC-7360N
• HL-2220
• hl-2240
• mfc-7460
• HL-2240D
• MFC-7460DN

[send2raj]

I have Brother starter cartridge that came with 7860DW, how would I know how much toner to pour into cartridge?. If starter cartridge doesn't have flag gear how will printer know that it's empty?, If I just refill and put it back in shouldn't it work?.

[InkOwldotcom]

@send2raj You can pour in 85g just like the regular cartridge. Note that the InkOwl bottles have exactly 85g in them, for convenience. The printer knows it's empty by counting the pages. You have to purchase and install the flag gear for the printer to accept your refilled cartridge. Check out our video on how to install for more details.

[Erneyman1]

Folks, it is important not to over tighten the screws, because it will strip out the holes the plastic. Also, a good idea to replace the original screw back into the same hole. It will help prevent cross threading.

I was wondering if, it is ok to just reset the flag gear to use up the toner left in the cartridge? Once toner is the same type do you have to dump out old toner?

Where I used to work, we used to shake up "used toner" in "used bottle" and put it into toner bottle.

[InkOwldotcom]

@Erneyman1 Yes, you can reset the flag gear to use up all the toner that is left, but this will only work sometimes.

Once the toner is the same type, you don't technically have to dump it out, but it's always advisable because your supplier might change manufacturer.

I'm not sure what you mean by "and put it into toner bottle", but if you're talking about potentially mixing some OEM Brother powder with refill toner, I would definitely advise against that!

[axt947]

What's exactly is wrong with the old toner? It may have been in the printer for only a few weeks.

[InkOwldotcom]

@axt947 The problem with the old toner is not the age. It's that because of the slight differences between the new (compatible) powder and the original powder, having both of them mixed in the cartridge creates severe and unpredictable quality problems, known as toner contamination. For this reason, we have found it best to instruct our customers to empty out all the toner that is inside their cartridge before refilling.

[dman3398]

Thanks for the information!! I can print again!

[lucyho2]

Thank-you!!!! I messed around with the flag gear when I kept getting "toner" light. Your video showed me how to reset this flag gear-IT WORKED!!!

[victorgabrielflorean]

muchas gracias !!!!

[axt947]

@InkOwldotcom Thanks, I appreciate your response.