We have a 6-year-old laser printer that works pretty good still, but it only prints in black. Wendell wanted something that also printed in color so about a year ago he picked up an inkjet printer from Walmart, an HP Deskjet 3752, "the world's smallest printer/copier/scanner".
A few months ago it stopped printing in black. I figured that the cartridge was clogged because we hardly use it. After unsuccessfully trying all the recommended methods for cleaning the printhead on the cartridge I gave up. The good ole laser printer still worked after all.
But every few weeks or so, I would try again to fix that bloody thing. And I would give up.
A few days ago, I came across a YouTube video that recommended something different. There was a good chance that I would mess up the cartridge, but I figured WTH, right? It wasn't working anyway.
Following the instructions on the video here's what I did. I peeled back the label on top of the cartridge to reveal this puka.
Using the nozzle on a can of dust remover I blasted air into the puka several times. Thick, sludgy ink squeezed out of the print head. Sorry, I didn't take photos. My fingers were all black from the ink.
After wiping up the sludge, I soaked the print head in a little bit of warm water for about an hour or two (I forgot about it). The water actually got all black. This is a re-creation for you.
It worked!! I printed this yesterday. Even though I don't like to waste the expensive ink, I'd hate for it to clog again from non-use.
Side note about the laser printer: It's a Canon printer that's not made anymore. I bought it on Amazon and paid $69 for it back then, which is about what the HP Inkjet printer cost. The laser cartridge is expensive ($76), but I've only needed to replace it twice in the six years we've had it (second cartridge still in use). And so far, it hasn't clogged.