Compatible with Brother DK-2251 Continuous Length Label Black/Red on White Paper Tape DK-22251 Replacement for Brother QL-820NWB QL 810W QL800, 2.4”x 50ft, 6 Rolls + 1 Refillable Cartridges

I didn't realize they made 2 color thermal paper. This was fun to play with. I do not have a Brother printer, so I experimented to see how this would work in other printer models. The first thing to know is that this is reverse wound, so the print side is on the inside, and not the outside of the roll (like normal receipt paper would be). One of my thermal printers was unhappy with feeding a roll that rolled from the other side (the paper feed rollers would slip). The other printer was just fine with it. Since this is a thick label + backing roll, it is more rigid than a paper only roll, hence the slipping feed wheels. The printer that did work was one of my thermal photo printers, so it actually outputs different temperatures, to produce lighter or darker pixels. When used with this paper, it produced mostly light and dark RED color (printing white to dark gray), and produced BLACK only on the darkest black pixels. What this means is that you will get a RED print out, with a normal print darkness setting, and a BLACK print out with your printer's darkest print setting. I wish I had time to write a custom driver for this. The standard Epson ESC command set does allow changes in darkness for each line. The challenge would be supporting 2 colors on a single line. It might be possible if there is a reverse feed command. That way you could print once at a light setting, for RED, then back feed and print a second pass, on dark, for BLACK. Enjoy.

I double checked the listing that my Brother QL-1050 label printer was compatible with these labels before I ordered them. I knew the listing said they were red/black on white. Long story short, I had a really hard to getting my printer to use these labels & I ended up putting a roll on my old frame because it will not accept the frame that came with them at all. My printer kept saying no labels installed. When it did finally print a shipping label, it was this weird red & black mixed color (that sorta looks like you're running out of ink on a computer printer). I contacted Brother's technical support & they said that these labels are in fact not compatible with my printer, but they are technically the right size for it.I'm really disappointed that I can't use these labels because they seem to be really good quality, they stick really well, print crisp & cleanly but it's not worth having my labels look unprofessional & weird, just to use them up. I wish the listing was accurate & made it clear that these labels cannot print in just black (even with the right printer) and that they have to print in black & red for them to look right. There are no instructions included to know how to put together the frame (instructions only on the listing). It is also really hard to get the frame apart to remove the label roll (not user friendly at all).