This Lexmark 18C1530E remanufactured cartridge has been recycled from a Lexmark original cartridge. This 18C01530 cartridge is often referred to as a Lexmark Number 3, No. 3 or #3.As a remanufactured cartridge, this 18C1530E has been recycled from an empty original Lexmark cartridge and has been fully tested and as such comes with a 100% satisfaction guarantee.In addition to being a lower cost this remanufactured Unit has the added advantage that it represents a more environmentally friendly way of running your printer.