The kyocera tk 590k 360641 black cartridge is specifically designed for use with kyocera laser printers the transfer roller transfers the image to the paper and collects any excess toner in a waste reservoir it offers a usable life of up to 35000 page impressions this product has been tested and validated on kyocera systems it is supported by kyocera technical support when used with a kyocera system the kyocera tk 590k 360641 black cartridge makes business documents look professional w