About this item

• Empty Ink Cartridge Kit: Get 4 empty ink cartridges?each color-coded so you won¡¯t mix ¡®em up. The set also includes 4 ink injectors and disposable gloves, making refilling a piece of cake. And here¡¯s the best part: these cartridges come with built-in disposable chips. No need to hunt down extra chips?just pop ¡®em in and start refilling!
• Matching printer:Our 812XL ink cartridges are a perfect match for the WF-7840, WF-7820, WF-7310, and EC-C7000 printers?no fuss, just smooth printing. But hey, before you buy, make sure it¡¯s the right fit for your printer. Check those model numbers, and you¡¯ll be good to go
• Easy Ink Refills£ºOur 812XL sublimation ink cartridge features a white, transparent shell. This makes it super easy to see exactly how much ink is left and track your daily usage at a glance. And when it¡¯s time to refill? Just grab the included ink refill tool?it¡¯s a no - brainer, getting the job done quickly and hassle - free!
• Crucial Notice£º It's extremely important that you refrain from upgrading the printer's firmware online. In fact, go ahead and turn off the printer's automatic upgrade feature right away. This helps avoid any potential compatibility issues with our ink cartridges. If the printer fails to recognize the chip initially, there's no need to panic. Our chips come with a range of different serial numbers, which might sometimes cause a bit of a hiccup in the recognition process.
• The simple solution is to take out the ink cartridge and put it back in. This often triggers the printer to recognize the chip all over again. When you're reinstalling the cartridge, make sure that the chip on the cartridge is fully and securely attached to the printer. And if, after trying that, the printer still won't recognize the chip, don't be too quick to send it back for a return. Instead, reach out to us directly via Amazon. We're here to assist you and will do our best to resolve the issue so that you can get back to smooth printing in no time.