The Canon 731BK cartridge is a high qualtiy black toner cartridge
that has been produced by Canon themselves. As a result you can
expect minimum fuss and maximum compatibility when using the Canon
731K laser toner cartridge in your printer.
The toner powder in this Canon 731 toner cartridge has been
specially formulated to work with the Canon Canon i-SENSYS
LBP-7100CN and all other compatible printers.
No additional drum unit is required as the 6272B002 cartridge
itself contains everything your printer needs to fuser the toner to