I've been bitten by an HP printer auto updating and my aftermarket ink suddenly not being acceptable. Never buying HP again after that.

I once updated my Epson, and it started rejecting aftermarket ink. Fortunately there is a way to downgrade the firmware.

Never buying a cartridge based inkjet printer again.

If you don't care about ink quality, then aftermarket ink is fine.

However, if you want your pictures to last 10+ years under the sun, or being able to read what you have printed after some time, getting the genuine ink is the way.

People think ink is simple. It is not.

Anybody thinking otherwise, some points of pondering:

     - Why Xerox and HP run their own toner/ink labs to formulate their own ink down to molecule level?
     - Look at your standard disposable pens. Gel, liquid, dye, pigment, alcohol/water/oil based, UV resistant or not... It's a hard chemical problem.
     - Similarly even something bland like fountain pen ink has hundreds of different formulations. Not colors, formulations. Washable to cellulose reactive and everything in between...
It's not dyed drinking water.

Lastly, I'm not against people using 3rd party ink at any level. I just want to point out that not every ink cartridge is created equal.

> then aftermarket ink is fine

Then why don't they allow it, perhaps with warnings?

They don't block after market ink because of quality concerns, though they might claim so, they block it because they want to make more money from you themselves through ink sales. The common response here is “but they make a loss on selling the hardware!”, to which my response is “their bad pricing decision is not my problem”.

I agree that "making loss on the hardware and using ink to offset that" is a very bad business decision. I have an 10+ year old HP Deskjet 4515 Ink Advantage which had a high initial price but cheap refills (black ink is pigment, but color cartridge is dye, but is UV resistant if printed on good photo paper), and that thing never created any problems for me hardware or software wise.

I can still use any print I got from it even after a decade. Ink's that stable on these.

From my perspective, 3rd party ink or toner is a support nightmare, esp. if it's bottom of the barrel. Again, from my perspective you should be able to take the responsibility and use these if you really want, but any ink or toner related damage might be out of warranty then (HP's genuine cartridges come with their own guarantees).

So, I can speculate that makers both offset the price and don't want to handle support tickets related to 3rd party ink damage for lower end devices, and buyers of higher end models are either using 1st party ink, or fine with paying the repair costs if their 3rd party installations go haywire.

Also, it's possible that kits for higher end inkjet systems (large format/plotter systems) tend to be higher quality since these models cater to professional shops which needs high quality supplies.

Lastly, I talked with someone who said that they buy the cheapest paper and cheapest ink because the printouts are disposable for them, and I find that point entirely fair, too.

My main point was underlining the fact that ink is not something simple in formulation. I don't defend banning 3rd party ink, but just pointing out some facts. I believe everybody can carry out their own fafo procedure.

That does not mean I cannot use the ink I want in a tool that I own.

Yes, your ink might be better. Market it that way and make it known. No problem with that. But prevent me from using my tool using DRM and firmware updates? That is customer hostile.

We don't disagree. See my longer comment above.

> However, if you want your pictures to last 10+ years under the sun

Ah yes, the standard usecase for a printer. putting pictures outside for a decade.

Printing a family picture on 4"x6" photo paper, framing it and putting in a living room exposes it to copious amount of UV light over a decade.

It's one of the exact reasons inkjet printers and blank, inkjet-compatible photo paper exists. HP was bundling them with their printers when I last opened mine.