The labels came very very light black background almost like the printer needed ink
596902
You could buy the labels and print them yourself.  The labels came very  very light black background almost like the printer needed ink.  :( disappointed  seeing as how the photo shows the background as black..even the description says chalkboard.. chalkboards are black.. wouldn't recommend.
3473322
The black was not as dark as the cartridge that was replaced, but it prints great. 4 out the 5 due to the darkness of the print text
872627
Labels were just as expected. They did not work out as I planned them for my RSVP envelopes but that's not the products fault. I give it 4 stars because when I printed on the labels (just using black and white), there were some spots and marks on the labels, possibly because of the weight of the paper mixed with my printer type. Maybe there should be more specific details on what printer should be used when printing these labels.
1867735
I ordered two of these to use as a background for my sons birthday party. It worked out well but one of the backgrounds was printed with a thick black line all the way accross, which totally ruined it. I couldn't try to exchange for a new one since I received it the week of the party. Also, they were both very wrinkled, I wish they would've been rolled up rather than folded. Other than that I received it in a timely manner.
4509982
There is a grayish cast on all the labels. The kind that happens when an item has already been run through a printer.
418810
I installed the second brand new black ink cartridges in my printer & the ink was so dim when I printed a page that I could hardly read it. The first black cartridge was bad also. I would not buy from this company again.
2017194
Received the 2 black and 1 color. One black was DOA  and other I have to take out and shake once a week to print, I only print a few pages a week. The color had no blue in it. But what can I expect for 12.00 works but not great
708897
The black ink must be clogged, or old or something. It's print is very faint. Each color is individally installed on this printer, and I didn't need the black until after the return timeframe was past.  I am frustrated because toner is expensive.
4073436
The labels that I received were not glossy or clear like they should have been.
1348017
These tanks are a little over filled perhaps.  They don't have the special valves that regulate the flow and so when you up the cartridge ink will literally drip out.  A few shakes into the sink and a dap with a dry papertowel should remove the excess ink though.  The black isn't a true black but the overall print quality is fine for any kinds of documents.  I'd stay away from photos and the like with these though.
3883524
My HP printer stopped printing black (colors were okay), so to check if it was something wrong with the printer or just a problem with the black cartridge, I bought this replacement brand rather than than the more expensive HP one, which I always use. Big mistake!! Upon removing the orange plastic protective cover, black ink poured out of the cartridge. Luckily,  I was able to remove the stain on my white crafting table using a mold/mildew product; however, my hands were a different matter. I finally resorted to using Comet and a scrub brush, which removed most of the ink. Very disappointing!
163295
black ink indicated less than 1/4 full and color cartridge although did not indicate quantity, color was poor.  upon complaint, received credit fior black ink but not the color although this was a package.  To appease me, they sent a set of cartridges but I have not tried it yet.
3184492
These are printed on a clear, light plastic background which was not evident when I read the description. After we decorated around them with garlands beads etc they were OK but I wouldn't buy them again.
2033260
The black ink was not the right size did not fit in printer tried using magneta but it didn't fit very well not happy ith product
2006077
The black ink does not cover the labels. Once the ink dries you can see the label very clearly. I applied the roller 4 times and the label was clearly visible. The concept is very good but the product fails miserably to perform.
2675368
The black ink is terrible and my printer only reads it half the time.  When itvwould print the black ink created lines on the whole sheet of paper
4173467
2 stars only because the instructions were easy to follow and technically the product worked.  The only issue is really the main thing I was concerned about in the first place.  The print output is VERY light.  It just won't print black or even dark grey.  Printing is often not even legible.  Unfortunately I still have most of it left.  I'm not sure what to do with it but I won't be putting it in my toner cartridge.

In the picture: The left page is a page I just printed with the refill.  The right page is a page I printed with the original cartridge before it ran out.