MIROO Compatible Ink Cartridge Replacement for Hp 564XL 564(1Set+1Black),Compatible with HP Officejet 4620 Deskjet 3520 Photosmart 5520 6520 6510 7520 B8550 7515 C6380 C309a C310a C309g C4110 Printer

Having read some of the complaints about this ink I was a little hesitant to go non-HP but figured "what the heck, so I'll be o9ut a few bucks" aand ordered. The result was a delightful surprise. The order came in promptly.; Each cartridge was neatly sealed and wrapped AND most important, they all slipped into the printer without a hitch and have, for the past several weeks, have been happily pouring out their multi-colored souls. Frankly, I couldn't be more pleased with both the product and the price.

I was worried using a generic ink in my HP Photosmart Premium C309a printer. But not for long! The main thing is to FOLLOW INSTRUCTIONS! Let the cartridges rest ink pad up for two hours prior to removing the orange cap and installing them. Made sure my print heads were clean and cartridges aligned before printing. Not a smudge, color bleed, or quality issue from page one! Perfect so far. Have not printed photos, just business flyers and correspondence, but will check back when I do. Had one page that I accidentally printed on glossy 52 pound paper with odd color - but as it was one only - going with user error in setting print parameters. At this point I am more than happy. If photos print this well, I will no longer be buying overpriced HP inks. Thank you.

I was hesitant to use ink cartridges other than the HP brand but finally decided to give these a try. My local store never seems to carry replacement ink for my printer or is out of the one I need so desperation called for action. After reading glowing reviews on this product, I ordered a set. They arrived in a timely fashion and were duly installed in my printer the same day. I tested them by printing several different pages and they worked flawlessly. I am now a convert and will continue purchasing these cartridges. I purchased an entire set for less than I could purchase one individual cartridge from Wally World. As a note, colors are bright, blacks are true black.UPDATE:I have been using these cartridges for a few years now and my previous review still stands. They are an excellent value, long lasting and work in my printer without any problems. Print is clear and sharp as are color images. I can highly recommend these cartridges AND seller as shipping is FAST!

Note that these cartridges are not refilled original HP cartridges but a compatible cartridge. The ink richness is not as good as original hp cartridge from what I printed. The black ink is noticeable not as deep rich and has a tendency to either spread so the letters are not crisp. Also I had several times the black ink smudges or get no ink at all on the paper. I never had this happen with refills or hp cartridges. To bad I really wanted these to work out as a substitute to refills. Also my Photosmart 309g printer almost brick itself, kept getting ink system failure in the beginning. I had to turn off and on for a number of times, pull the plug, install and re install the cartridges until finally my printer un-brick itself. Not sure how. Even still the printing is subpar to hp cartridges color richness, crispness, and I wasted a lot of time and paper (smudges, missing print).

I own a HP Photosmart 5520 for which I have always refilled my own cartridges without problem. This last time I refilled them and ran the clean print head utility, the test printout started showed printing problems, e.g. missing colors and/or streaking of colors. No matter how many times I ran the utility, I had the same problems. If the print head utility does not fix the problem, HP suggests to replace the cartridges. I was aware that cartridges have a finite number of times that they can be refilled before becoming defective but I didn't like the idea of spending $50 or more for standard HP cartridges only to find out that that did not fix the problem. Less than $13 for a set of non-HP XL cartridges appealed to me as a low cost troubleshooting technique so I ordered the MIROO replacements. I unpacked the individual packaged cartridges and installed them. No leaks or mess whatsoever. They were clear so that I could see that they were all filled to the brim. After I installed them and ran the print head utility twice, everything was like new. From now on, I will never again refill cartridges or buy expensive OEM cartridges. MIROO 564 XL replacements are all I will ever use.

Works great and seems to last as long as HPs XL cartridges. But a huge amount cheaper than HP! The $13 paid for these would have easily cost over $100 via HP. The colors also match the HP colors quite well.My HP does say they are non-HP when it is installed but soon starts tracking it fine.As of Sept. 2017 I'm now on my 2nd full set of these. For me, they work every bit as good as HP for a fraction of the cost. I use 20 weight paper and get no problems with using these.