Question about Brother MFC 420CN All-In-One InkJet Printer

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Will not print

My 420cn brother will not print in black and white when the other colors are low or empty

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Re: will not print

Naturally will the printer refuse to print if one color is empty to be in safe mode.
This is because of the print head technique which demands a permanent ink supply to prevent drying out:

Posted on Dec 07, 2007

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How come my printer wont let me print pictures without yellow ink if there is no yellow pictures??

All printers require that all inks are to be full or not empty before it can print your document or print your pictures. So what i can suggest for you to purchase a new set of ink cartridges or have a refill if its available. You can also choose the black and white option or grayscale but i think your pictures have different color aside from black and white so it getting a refill would be the best option. Hope i was able to help you with your problem. Have a great day

May 17, 2011 | Brother MFC 420CN All-In-One InkJet...

1 Answer

My printer refuses to print in Black even if it is full but the color cartdridge Y and B are finished....How to make it print?

The way the Brother MFC-420CN is designed, it will not print at all if any of the ink tanks are empty. They say that this is to prevent damage to the printheads.

There is no workaround.

A lot of inkjet printers have this same restriction, if any tanks are empty, it will not print.

Mar 25, 2011 | Brother MFC 420CN All-In-One InkJet...

1 Answer

Will no print black color doc if any other color ink is empty

actually, its not. the reason is, there is a small resovoire (sp?) in the ink cartridges. if you continue to print, the nozzles will clog up, and can cause all the nozzles not to work. even when you do just black, the printer has to clean at times all the nozzles and if your nozzles are empty, air will go into the deep and dry up the excess ink.

if you are going to do primarily black prints, you should get a black and white laser for those uses only.

Jun 13, 2009 | Brother MFC 420CN All-In-One InkJet...

2 Answers

Brother printer manuel

The manuals can be downloaded free here.

The cartrages can be purchased from just about anywhere... I looked them up at and they go for about $25 for the black one and $13 for each color. You should be able to just buy the ones you need. Here are the part numbers for the cartridges:


Mar 16, 2009 | Brother MFC 420CN All-In-One InkJet...

1 Answer

How can I print copies in black and white from my MFC-420CN using only black ink cartridge. When the other cartridges are empty ?? Solve This

Hello. I have one of these myself, and you cannot, if it detects any of the cartridges empty, it will not allow any printing, copying functions. You may be able to remove the cartridges, shake em up and return them to try, but I believe you are just going to have to get new ones.

Hope that helped, and thank you.

Mar 15, 2009 | Brother MFC 420CN All-In-One InkJet...

1 Answer

Brother Multifunction center, receiving documents, but not printing, being told that color inks are low, do not use color ink never had, original from purchase, I only print in black and white, what can I...

If it show low or near empty it still print.
If it show empty it not print.
You can use black tape cover at ink catrige on position of sensor.
Many people do like that it work.

If not work send it to service center. it hardward problem.

Dec 09, 2008 | Brother Multi-Function Center MFC-240C...

1 Answer

Near empty black

Take ALL carts out of the machine. leave scanner open and unplug from POWER OUTLET.
Wait 5min.
Replug to power. Wait until machine demands carts.
Insert carts again.
Close cover AND ANSWER THE DISPLAY questions if you have changed the carts. Give answer by pressing 1 (Yes) or 2 (**). You should answer for the new cart of course with 1.

This will reset the ink counter.

Mar 08, 2008 | Brother MFC 420CN All-In-One InkJet...

2 Answers

Brother MFC-420CN color ink empty but want to print/copy in B&W

brother won't print od do anything is one of the 4 inks are empty so first of all you have to replace whatever is empty, when you remove it it will ask you if you changed it and if it is a new one you will press 1 twice per cartridge, if you put compatible ink in you will clog the ink head up and then be stuffed

Dec 15, 2007 | Brother MFC 420CN All-In-One InkJet...

1 Answer

Brother MFC 5460CN Won't Print w/ Full Black Cartridge

What type of machine do you run?!! MFC420 or mfc 5460?!!
Is it a machine with LC51 or LC41 carts?

In both way: Did you check the other carts? It could be that there is another one empty.

Did you stick the tape at the right place, too? The tape should be a bit larger than shown on the pic.
For the LC51 it it the same position.

Did you answer the printers question of changing the cart with YES?

Nov 27, 2007 | Brother MFC 420CN All-In-One InkJet...

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