 the nozzle has gone bad. When you have a bad nozzle checking pattern, you should troubleshoot it. Miimaki have a really nice article here I'm going to post on the description of this video. I also have a nice playlist about how to unclog a Epson if you want to see that. Also I'm going to post in the description. Today I'm talking about there's no way you can save your printhead and your printhead print something look like this and you're already done the cleaning and you've already done everything possible and now the printhead is ready for the trash can. Can you still squeeze some life out of that printhead? I'm going to talk about two solutions here. The first one only apply to certain models of Canon but the second one is Universal. So let's say you have Windows 10 from the printer device then you go to manage. Then go to print preferences and then go to maintenance and then go to cartridge settings. If Canon allows you to only use the color or black cartridge, you're in luck. Let's say my black cartridge is damaged but I still my color cartridge is okay so now I can light the computer to mix up three colors to make black. However no matter what you do the other cartridge cannot be faulty so if you see the printer says the cartridge cannot be detected or cartridge is damaged and you cannot use that cartridge. You have to have a dummy cartridge. It's something that electronical sound on the other slot although you're not using it. You have to have it have it in there. So the leftmost one is the regular one. I use both cartridges. The middle one is that turn off the black cartridge and only use the color cartridge and you can see the black is not as dark as it could be. And the third one on the right is I only use the black cartridge. I do not use the color cartridge. However my cartridge run out at the end. So the second solution is when you have other nozzles working for example here we have cyan, yellow, magenta and photo black. We have four nozzles working. It's just one black nozzles not working. How about we just use the working nozzles. In this example we know the black is not working and how about we only use the yellow nozzles. We'll just fill the yellow with black and only print from yellow. You're going to ask me where I can get this cool stuff like this. I'm going to put a link in the description if you want to get one of those. It makes it feel really easy. There's a website that you can change a PDF into one color. I'm going to put this website in my description of this video. There are lots of software like Word, Excel. You can export your document into a PDF. Then after that you upload to this page and then you pick which color you want to download. I think you can just directly put in yellow cyan, magenta, light, magenta. I think you can also input the hash code. Here I put the yellow hash code here so you can see it get converted to yellow. So after that you can just click download. Download a PDF O in yellow. Okay let's print this. Because we know we filled the yellow with black so this should print out as black. Just think about it. After this yellow card, yellow nozzles went bad, you can still use the magenta and you can just swap to other set of other set of nozzles until the whole thing burns down. By the time you burn through this cartridge and exhaust its old nozzles, you might get a call from Natural History Museum. They want an exhibition for World's Eighth Wonder. I hope you enjoyed this video. Visit us at www.bchtechnologies.com. Cheers!