Does the ink cartridge have to be the same brand as the printer? -

I have a Lexmark printer and hp ink.The cartridge does not fit and is #56.

No, The look for the brand that fits your style printer.

It doesn t have to be the same brand, but the same model number

depends, some cartridges can be use for another printer, but for best result make sure you only use cartridge recommended for your printr. I ve try to use cheaper cartridges and trust me its will cost you more

As long as it is the same # or style it s good.

There are compatables - I ve never purchased my printer cartridges by name - always generic.... be picky and make sure that the ink is certified for that printer. They usually will tell you. I get them off e-bay pretty cheap. Even use cleaning cartridges between just to get rid of residue.

Preferably same. The incompatibility may damage your printers. Also some printer manufacturers insist on the same make s cartridge otherwise the warranty is not valid.See the printers documentations for details.

Doesnt have to be the same model as long the the numbers match.

yes you should have the same number and type printer cartridges.what does your printer cartridge replacement tell you in the manual?use the one s it tells you to use.