BlastCase Compatible LC79 High Capacity Printer Ink Cartridge 10-Pack for BROTHER Printers MFC J6510DW J6710DW J6910DW LC-79 4x Black, 2x Cyan, Magenta, Yellow

I purchased a Brother MFCJ6910DW MFC inkjet that uses LC 79 cartridges. I installed these in lieu of the smaller starter cartridges provided by Brother, after a few days there has been no problem. The size and ml capacity of the black ink is massive (49 ml) the color ink seems to be 29 ml, which is about 50% larger than an LC 61 cartridge which is used on my smaller Brother J615W color MFC.This offer contains a lot of black inkjet cartridges. 4 black and 2 of each color for about the price of a Brother black cartridge, these are a much better value in my opinion at this time. The price has dropped from $28 to $19 delivered over the past 4 months. This offer is best if you do a lot of black and white only printing, as if you use color often, it is likely a pile of unopened black cartridge will exist while you are running out of cyan, magenta or another color. There is another offer, with 2 less black cartridges at a lower price of the same capacity ink if you need or want to use color regularly.This review was updated after 4 months and approximately 10,000 pages printed on my Brother MFCJ6910DW MFC inkjet. So far, not a single smeared sheet, and the printer and cartridges work well together. The cost has been lowered from $28 to $19 and from shipped by store to shipped via Amazon prime. Ordering via prime is always nice, tracking works well, and total cost is clear at time of hitting one click. My cost per page is significantly lower due to the decrease in price.There is absolutely no reason to purchase branded Brother LC 79 ink cartridges in my opinion based on thousands of pages of printing. I also use OEM LC61 cartridges for another Brother inkjet printer and have printed over 3,000 sheets without incident.The cost per page with this product is amazingly low compared to using Brother brand cartridges.My use indicates approximately 2,000-2,500 sheets per black cartridge which varies a bit by how much black is in each page, and around 900-1,400 sheets per color cartridge. My color use tends to use a bit more blue, as a result my cyan tends to go first. Likely due to just having more blue per page than other colors. This is based on my personal printing experience with about 10,000 sheets over a 4.5 month period using a Brother MFCJ6910DW printer.Based on a my printing experience with this offer, cost per black and white page for ink is .19 (that is 1 fifth of a cent not 19 cents). Cost per page for color is 1.15 cents, with a lot of black cartridges left over. By comparison the cost of using Brother branded cartridges from Amazon would have been 3 cents per color page, and 1.25 cents per black and white page. Using Brother branded ink is at least 3 times and up to 6 times more expensive per page based on my use.My estimates assume 2 color cartridges print approximately 2,400 pages, and black cartridge will print about the same. Your individual use and experience may vary from mine. I offer it as a reference in this review.

There has always been 3 printing laws in my life that have been infallible:1. Lexmarks are crap2. Refilling your own cartridges ruins more than it saves3. Aftermarket cartridges are garbage.As sure as the sun will rise tomorrow, those three rules have always stayed true. Recently we purchased a new printer and because we print in high volume my boss asked me to form a list of the cheapest cartridges on Amazon for our new Brother 6710DW before we ran low on ink. When he saw the price and quantity of cartridges in this pack, he asked me to look into the cartridges, find reviews, basically make sure that they could be what we are looking for. Well after reading reviews, I figured for 10 bucks, lets grab them, and if we have to we can always buy the Brother manufactured cartridges from Staples.I am happy to say that we shaved 40 bucks a month off of printing costs from purchasing these cartridges. I haven't had an ink blotting problem, they print in the same quality (well for blueprints anyways) as the Brother cartridges, and honestly they somehow broke the third law of printing; they are cheap and good. I have probably printed 600 pages, and there hasn't been a print error. At the end of the week I always test print and calibrate, and I haven't had to calibrate to be honest. I had low expectations for these, and honestly, even if I had high expectations, I still feel that they would have matched them. I'm not comparing the cartridges to how much I got for the price, I am saying that even if we spent name-brand price, I would not have felt ripped off by these cartridges, its just a cherry on top that they are 10 bucks.For the price, there is no doubt in my mind that these are the way to go. If you really are thinking about buying the manufactures cartridge, I can understand that, but trying these out has been one of the most pleasant surprises I have ever had in a purchase.

In beginning I was sceptical in using these.A problem faced -I started with black ink. In a few days the printing showed missing parts of letters in black. I was almost sure that my head is dying. I wanted to blame the ink.There was a tape which covered a hole on the top of the ink. Just to experiment I removed it. After that printing was good again as if the cartridge could breath and the printing quality restored.Then I installed all other colors also.Another problem ongoing-After printing a lot of pages, when the printer reported it empty, there was still ink showing in the cartridge.And when I remove the cartridge, ink spilled in printer and floor. Every time and every cartridge did that. I do not know how to stop spilling or how to use all of it.5/6/2013- I second ordered the ink. Still good. I little improvement in mechanism found. Place of top hole changed, so the ink does not leak when applying or removing.I wonder why the removing cartridge still has a lot of ink left. I have become smarter. I used extra in fountain pen, pilot pen or dot pens with thick tubes and liquid ink. The ink can spill if pen not positioned correctly.