How do inkjet cartridges work?

I need some replacement cartridges for my HP 1200 inkjet printer. There are some sold on EBay much cheaper than stores, but some have expired dates. I am wondering if anyone has had any experience with using expired ink cartridges, and if so, how old...

There are people selling generic brand inkjet cartridges on Ebay for a lot less than the HP brand. Does anyone know if these work just as well or if it is better to just buy the name brand? Thanks.

I purchased a remanufactured Lexmark cartridge and my Lexmark will not recognize it. I see everyone else has the same problem. Why do we recycle them, thinking we are doing well, when the company blocks them from working on their printers?

My experience: My first photo/inkjet was a Canon S800 ? Loved it, but when the cartridges needed to be replaced, they were over $20 a piece (6 cartridges). I got a Lexmart--cheap ink, but the quality sucked and I returned it within a few days. I splurged...

I've had pretty good luck refilling inkjet cartridges, but when they sit around a while they seem to go bad/dry up? Is there a routine or procedure for cycling and maintaining cartridges so I don't waste time refilling them only to find out, after multiple...

Does anyone know of a good website store to buy inkjet cartridges? A place that is reliable and inexpensive? I was using LD Products and they were great for a while---but lately, their products suck. The cartridges don't work right and customer service...

I have a Canon Pixma MP150 inkjet printer which is several years old. It has always worked fine, with no real problems. I've just replaced the colour ink cartridge, but the blue ink now won't print. I've tried the 'cleaning' and 'deep cleaning' functions...

Currently, I have a HP inkjet color printer which I use mainly for school work. I use it quite frequently and I hate how the ink runs out very quickly. I don't use color ink a lot unless I have to print some photos or pictures. Printing pictures consumes...