Laser Tek Services Compatible Toner Cartridge Replacement for Okidata C310dn C330dn Printers - 5 Pack (Black, Cyan, Magenta, Yellow) | High-Quality Printing for Office Documents, Reports & Color Graphics

These cartridges worked great and were a great price, but yielded similar to standard yield. Even for standard yield the price is good, but I keep going back to Speedy Inks HY cartridges, which are new (so less mess with leaky cartridges), have more Prime shipping options, are similarly priced (especially when you add in the cost of shipping for the Laser Tek ones), and have always given me great results. Also these cartridges were refurbished, not new as pictured. I still recommend keeping one genuine OKI black cartridge around, since off-brand black cartridges tend to give the most errors regardless of brand (due to the waste-toner bin in the black, which is hard to replicate I guess).good price, works well, however, the ink does not last long, as if these are not filled fully.Product was advertised to meet O.E.M. requirements. My OKI data printer did not recognize newly installed toner (I tried both) After calling Laser Tek Services, I was told that my machine must be a newer one and therefore all the stock they had would not work. They were good to issue refund and return labels but that does not get documents printed. Price is good, return service was good but the product is not compatible. After calling OKI Data about it they said these off brand replacement toner cartridges only work about 50 % of the time. I am sure I understand the racket going on here; Okidata ( HP and others do the same) wants to continue to make money on toner so they change the little chip reader that reads the chip in the toner cartridge every so often so that competing toner companies products are not compatible and therefore people shy away from them and buy their outrageously priced toner !My OkiData printer doesn't recognize that a Laser Tek cartridge is in the slot so we get a LOT of messages about Toner Missing or Toner Low. But somehow the machine marches on and does eventually squeeze out the prints.I installed the first toner (K) today (07/11/16) and the machine still says toner not installed and toner empty. It is printing but it says it has no toner installed. From this 5 pack I tried installing the second toner (K) and the message is the same. The quality of the printing is also not very good. I always ordered the OKI toners and I can see the big difference with this toners.The are the right replacements for my printerWrong products suggestion from Amazon so we didn’t get to see the print qualityPurchased this for our work printer but when we opened the package two of the cartridges were used and none of them would register on our printer. Returned and purchased the same thing from our local office supply store and had no trouble. Should have known the price was to good to be true.