Standard Black (K) EZ Cartridge with Cleaning Roller, 1000 images per roll. The ribbon is used to print in one monochrome color: black. This ribbon is used to print text and one-color images one or both sides of the card. Compatible with DTC400, DTC1000, DTC4000, C50, DTC1000Me, DTC1250e, and DTC4250e. This part is also known as 045102.