My ML2850 toner cartridge arrived safely. I have only just got round to trying it out. When I did try it I thought that I was going to have to return it as at first I could not get it to print. When I tried to print something a sheet of paper would start coming out of the printer but it would jam with about one third still in the printer. Nothing was printed on the paper. I eventually traced the problem to the 4 contacts that the supplied cartridge has that my original does not have -- see the attachment where you can see that my cartridge has no contacts and yours has four. One has to be a bit forceful in inserting your cartridge to make sure that good contacts are made. My original cartridge goes in very easily. It would be helpful if advice regarding making sure that the cartridge is firmly inserted were included with the cartridge.

I first came across Toner Express on eBay having tried approximately 4 - 5 other refill services - As we print quite a lot it started to become a big expense and unfortunately none of the 4 - 5 other companies refilled the cartridges correctly, you wouldn't believe the quality we recieved some cartridges in that we had paid £25 - £40 for, the chips where broke, the chips where missing, some said 30% full, some said 100% full but after the first print it dropped to 20% etc etc. So I made a brave decision to try yet another refill company this being Toner Express - and my god! what a relief, the cartridges arrived in perfect working order, extremely well packaged and branded up very professionally - you would sware they are new. I have always expressed where possible the sheer quality and convenience of using Toner Express. I have never had any problems only quality first class service from Toner Express - I highly recommend them to anyone. Please dont think this review is fake/biased etc - Please feel free to contact me via KoOSK.net and I will tell you over the phone, in email etc they are fantastic. Cheers Rob at KoOSK.net