HP Color LaserJet 2605dn color alignment issue

Its a good idea to your homework before getting a printer - some brands are easier than others (canon has been reliable for us, tho we eventually worked out how to do it with dells too) - generally refilling the ink will void your warranty (but in many cases, that's easy to work around - swap in a non refilled cartridge if needed). There is also supposed to be some risk of print head clogging.

In my experience i haven't had too many issues with refilling printer inks. Apparently the formulation differs based on the ink type (pigment based ink vs Dye based ink) - which is why there's brand specific inks.

Dumb cartridges refill better - IE, the cartridge itself dosen't have the print head built in, and as such there's no 'intelligence' in the cartridge. Some printers also have RFID chips to monitor if a cart is genuine (dell does this. You can sort of tell the printer to ignore an empty cart and print anyway, so its an anti 3rd party ink rather than an anti refill measure. Ideally cartridges should have NO logic whatsoever in them, or minimal logic. We've never had print head clogging, so far, but in general deep cleaning should fix it (or in many cases they are user replaceable - I haven't worked out how expensive that is yet)

Not all ink carts need you to drill a hole - with canons, we punched a hole in with a special tool, and with some others (dell), you inject the ink with a hypodermic needle into one of the holes already on the printer.

Finally, most printers will NOT detect ink levels on refilled cartridges, so you'll need to monitor ink levels yourself. Its fairly easy on printers with ink tanks, as opposed to having the ink soaked in a sponge, but its something to keep in mind.

Laser printer toners.. eh, don't do it yourself. that dust is NASTY. I've seen some office printers use big bottles of toner which might be more sensible. For regular printers... its probably not practical.

Before throwing it out the window, it's worth taking a pencil eraser and rubbing off the ink head contacts.

Ambient humidity whether you live near the ocean or if your particular printer was mildly defective... can tarnish copper contacts.

A pencil eraser rubbed as gently as you'd erase a word off paper can rejuvenate electronic devices from cell phone batteries to your printer.

I can't hurt and you'll be surprised how effective it can be.

In every HP I own, I can still find ink in places you wouldn't think, take a dry (non Puff's moistened) kleenex, paper towel or toilet paper and rub the printers cartridge tray for any ink and this will be your culprit.

If you have ink accumulation, using high concentrate rubbing alchol dabbed paper towel to dlean it then immediately dry it will rejuvenate the printer

These are worth trying before kicking it out your window, but kicking an HP printer can be immensely satisfying .