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

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I admit it, I used cheapo refill ink! Now the black section of the print head doesn't work...

I admit it, I used cheapo refill ink! Now the black section of the print head doesn't work. I took the printer apart and flushed the black tube and return line with alcohol, then installed new BROTHER black ink cartridge, but still almost no black gets through: when I do image quality test print it manages to print 2 or 3 of the 24 or so dots that show up on the color squares. Can you tell me how to rescue this print head, or where I can buy a replacement?

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Re: I admit it, I used cheapo refill ink! Now the black...

Hey, that's terrific! Ah, well, thanks for your advice. I guess I'll be buying a new printer very soon. Shopping around, it looks like most brands use the same disposable printer setup. Can you suggest any inkjet MFPs that have replaceable print heads in case I make the same foolish mistake again?

Thanks Again

Posted on Jan 26, 2008

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Re: I admit it, I used cheapo refill ink! Now the black...

I'm afraid there is no real sucessful way of cleaning these print heads, tiny micro filters built into the head unit will blocked. I have never unblocked one fully.

Fix is to replace head

These heads are not easy to fit, then once they are you must program in the head id and run a purge with four gen inks, this purge uses like 1/4 of each ink.

Recommennd you replace printer it is cheaper to

LINK to UNRECOMENDED removal of head

I dont have the 420 cn listed but here is link to mfc425cn head info so you can see how much they are not worth buying

below is pic of head

2d7dc76.jpg .

Posted on Jan 13, 2008

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Please do accept the solution if the issue is resolved or else revert for further assistance.


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A place that refill in should carry some kind of a cleaning solution that you can use.
I hope this help you

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