At some point, you'll get a message on your Brother printer indicating you that your waste ink tank is full. After all, ink has been collecting in this container since you've owned the printer (more than likely). You can try to clean it and dry it out, but eventually you'll probably have to buy another tank. It can be a more difficult process than you think, because the places where you buy your cartridges aren't always the places where you can find this supply.
How to Buy a Brother Printer Waste Ink Tank
Know the key words. For example, Brother's official Web site is a natural starting point, but you won't find the tank by searching it as such. You'll want to search by "waste" or "toner cleaner" as it is listed as a waste toner cleaner. It looks like a simple plastic container, and you can buy it directly from the site for $16.99.
Try Brother Mall.If you've exhausted searching at the "usual suspects," your local office supply retailer, check out Brother Mall. The manufacturer recommends it as a source for all kinds of hard-to-find Brother supplies and accessories.
Check and double-check the model number. No matter how or where you buy, make sure the tank will work with your specific Brother printer. You don't want to find out until it's too late that the tank isn't right. Hint: Online the appropirate model is listed under the photo and price. Often, one letter or one number can make a big difference.
Familiarize yourself with the return process. Many times, if opened, these supplies are non-refundable, making #3 all the more important.
Try discounted office supply sites. Note: Not all will have this product. Many specialize in toners and cartridges. A good bet is Quill.com, as well as OEM (Original Equipment Manufacturer) sites which authoirze to sell brands like Brother.