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

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Printing I can't print in black even though there's enough black ink. I can change the text to another color and it prints inthat color but not in black.

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Re: Printing - Brother MFC 420CN All-In-One InkJet Printer Printers & Copiers

Check the jets

Posted on Apr 18, 2007

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Even though my black cartridge is full, my black and white documents are so light they are unreadable. My color cartridges are close to being empty. Can this be the cause?

printers use all cartridges to get the correct colour even black
best get a new colour cartridge then realign the printer with a test pattern

Apr 05, 2015 | Printers & Copiers

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Does printing black text only on a Brother Inkjet All-in-One (MFC-J625DW) use the color cartridges?

Your right. Simple answer. Take the coloured cartraiges out (you may need to set your printer to mono crome though. not sure.? Save a bit more money and recycle your cartrages you get paid for them. then you can buy refill cartrages and save even more. Some say do not use them they cause problems, but i have from day one and still have no problems 29 years later!!! and i am a high user on a A1 PRINTER!!! (draughtsman if your wondering)

Jan 25, 2012 | Printers & Copiers

2 Answers

Black and white prints are not black

Sorry, steve, that you are experiencing this problem.

According to's website regarding the i9900 InkJet Photo Printer:

Why color ink may be used when printing in black and white Even when printing in black and white, color ink is used for the following reasons:
  1. Automatic cleaning of the print head.

    To prevent the print head nozzles from clogging, the print head is automatically cleaned periodically. At that time, a small amount of each color ink is consumed.

    Therefore, although printing in black and white is performed, color ink is also consumed.

  2. Color inks may be used to create black.

    When printing in grayscale or on photo paper or when duplex printing, although printing appears in black and white, the color black may be created using the three (cyan, magenta, and yellow) color inks. Printers without a pigment black tank / cartridge will print black / grayscale will create a composite black using color ink even on plain paper.

    Therefore, although printing in black and white is performed, color ink may be consumed.
  3. In order to keep the heavy black ink from smearing on the page or in the printer, color ink is used when duplex printing to help create black text.

I might suggest taking out the color ink cartridges leaving only black there, but some printers don't take kindly to this. So, you may have to further experiment with magenta, cyan, and yellow to make it at least seem b&w to your best eye's judgment.

Good luck on this.

Jul 13, 2010 | Canon i9900 InkJet Photo Printer

1 Answer

Print keeps fading, even though using new ink

check your printer settings, make sure color only is not checked off, or if you mainly print black and white documents, you should have that option checked, you may have to go into advance printer options to do this.

Apr 07, 2010 | HP Deskjet 3845 InkJet Printer

2 Answers

My daughter's NX400 is running out of color ink even though she prints mostly black&white. She says it looks like it is printing black text with a combination of all colors instead of with black ink....

I had an epson. Hardly use the colors, because i was printing only in black.
Sent an email to Epson, and they did respond back.

It will definately use the color ink, even though
you're printing only in black.
Go Figure!

Good Luck.
I now have an HP and Brother

Nov 03, 2009 | Epson Stylus NX400 InkJet Printer

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Printing error message: cartridge problem.tri-color.I wasn't even


its becoz even if ur print contains only black text in it, while printer printing in black it needs a cyan or yellow ink to give very clear print out. work around for this issue, go to the printer icon and right click and go printing preferances and change the option to print only in blak or print only in gray scale. it should resolve ur issue............

Regards,  raj_p5983

Jan 21, 2009 | HP OfficeJet J4580 All-In-One Laser...

1 Answer

Printing without color?

Im sorry to inform but yes, Epson ink jet printers require all of the ink cartridges to have ink in them in order to print any color, black and white, or grayscale images. Epson printers contain a permanent print head that needs to be charged with all colors to work. Even when users are printing black text only, a small amount of color ink is used to keep the print head charged for color printing and prevent air bubbles from entering the color print nozzles which can damage the print head. Therefore, once one of the cartridges are expended, the printer signals you to replace the cartridge in order for printing to continue.

May 12, 2008 | Epson Stylus CX4200 All-In-One InkJet...

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Text Not Printing

You are out of black and white ink.
Graphics are printed with the color cartrage
text is printed with the black and white.

Apr 30, 2008 | Brother MFC-8440 All-In-One Laser Printer

8 Answers

Printer will not print black ink

Chewbacca08's solution gave me an idea. I set the print setting to photos paper (even though I was trying to print on plain paper) and IT WORKED. It's worth a shot before you trash a perfectly good printer.

Jun 25, 2007 | Canon i850 InkJet Photo Printer

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