Hewlett-Packard sues two companies that sell refilled ink cartridges, but it stops short of trying to block the refill business altogether.

Hewlett-Packard on Thursday accused a national cartridge reseller of refilling used printer cartridges with ink that relies on a formula for an HP-patented ink brand. In its letter to Cartridge ...

A typical cartridge-refilling kit includes a bottle of replacement ink, a syringe with which the ink is injected into the cartridge and a seal to prevent leakage.

If you're refilling a cartridge for a HP or a Lexmark bear in mind that these are sponge based cartridges. That means that Lexmark and HP ink cartridges contain an internal sponge through which air ...

Our cheapskate serial refiller saved a few bucks by buying remanufactured HP cartridges from Cartridge World--but the retailer’s pricing quirks mean your savings will vary.

HP has filed patents for an ink cartridge-refilling machine, even though disposables rake in billions.

Our serial refiller more than halved his printing costs with Costco’s ink-refill service, but he found that the warehouse club’s ink wasn’t as vibrant as HP’s.

Hewlett-Packard sues two companies that sell refilled ink cartridges, but it stops short of trying to block the refill business altogether.

That means that Lexmark and HP ink cartridges contain an internal sponge through which air enters the cartridge and, consequently, the same volume of ink goes out of the cartridge. If these cartridges ...