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Refilling the HP Black Print Cartridge 21 (C9351A)

Inkjet print cartridges costs a lot of money. And recently, they've become smaller and smaller. Take, for example, my brand new HP Deskjet D1341. I just put this printer into service so I can print out all my tax return forms. After printing this year's return, a return from last year, and a few other things, the print cartridge is already empty.

The HP Deskjet D1341 uses the HP Black Print Cartridge 21 (C9351A), shown in the photograph below. This ink cartridge seems to be half the size of the previous generation cartridges.

Attached Image:

HP Black Print Cartridge 21 (C9351A).jpg

Chieh Cheng
Fri, 13 Apr 2007 00:08:21 -0700

So, sitting here at midnight, half-way printing through last year's tax return, the ink cartridge is out of ink again. Rather than driving out to Wal-mart in the middle of the night to pick up a new cartridge, I decided to play around with it.

I used an Xacto knife to peel back the label on top of the cartridge. And viola, the ink filling hole is revealed (see photo below).

What ink to use? I happen to have a pack of Universal Inkjet Refill Kit in my office. Those are usually good bets.

Well, what do you know? As I'm finishing this post, my 24 page tax return just finished printing using the new refilled ink. The document looks flawless.

Attached Image:

Peel Back the Label to Reveal the Refill Hole.jpg

Chieh Cheng
Fri, 13 Apr 2007 00:13:26 -0700

Thanks for the tip dude!

Note it's the hole in the center - I already started drilling in the corner niche before I looked at the picture more closely.

Fri, 06 Jul 2007 05:33:22 -0700

thanks for telling dude!

Mon, 27 Aug 2007 10:24:52 +0000

Hi Thanks for the info. I have been drilling out another hole and this sure looks faster and cleaner. I just peeled back the label on a 97 color and there are three openings for the three colors. Sure beats drilling out three holes.

Mon, 15 Oct 2007 03:03:26 +0000

Brilliant - thanks so much for the tip! I came across this when searching for this replacement cartridge, but now I'll just buy the refill kit.

Jennifer Payne
Fri, 26 Oct 2007 03:18:18 +0000

How do you remove lots of refill ink from your hands !??

Fri, 08 Feb 2008 04:08:23 +0000

I know what you mean. It's difficult to come off. Use lots of soap. What doesn't come off right away will come off after a few days. Now I try not to get any ink on myself. But that's still a challenge.

Chieh Cheng
Fri, 08 Feb 2008 19:00:14 +0000

Hey guys...(leave it to men), you can wear a pair of disposable gloves. :)

Sat, 10 May 2008 03:56:10 +0000

Haha, you are right, Dianne. I haven't thought of that . . . even though I see my wife use disposable gloves all the time.

Chieh Cheng
Sun, 11 May 2008 04:10:22 +0000

BRILLIANT! Thanks for the great tip and screenshots! I don't know why but the refill pack I bought instructs to fill the top right of the four holes in the catridge....Was about to try and drill a hole in my cartridge!:P

Pierre Rohloff
Sun, 18 May 2008 13:32:47 +0000

Hey, I was wondering if it was necessary to reset the chip on the top of the cartridge some how.
thanks in advanced.

Karl Langdon
Sun, 01 Jun 2008 02:27:12 +0000

There is a chip on top of the cartridge? How do you reset it?

Chieh Cheng
Sun, 01 Jun 2008 03:30:29 +0000

use bleach to clean hands stains

Wed, 25 Jun 2008 03:20:46 +0000

It has a chip, but not in bottom
Better disable ink level detection before any refills

Tue, 30 Sep 2008 09:21:31 +0000

good idea i too have the same model cartridge

Thu, 25 Dec 2008 13:37:55 +0000

Great Thanks,
were can i buy the inkjet refill kit ???

Wed, 06 Oct 2010 09:53:22 +0000

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Tracked: Wed, 23 Jan 2008 01:50:09 +0000

Title: Refill Ink Cartridge for your Printer
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