The Konica Minolta A33K452 is essentially a tube with toner in it... don`t take this as a bad thing though. The simplistic design of the Konica Minolta TN512C keeps the cost down and also means Konica can fit sufficient toner into it for an estimated 26,000 pages! Every grain of the A33K452 toner powder has been produced by Konica to ensure prints are heard, wearing attractive and stunningly vibrant. This cyan Konica Minolta TN512C toner cartridge is only compatible with a few Bizhub series printers including the incredible C554.