The "Di OPC DRUM Dark Green" refers to the OPC (Organic Photoconductor) drum used in various laser printers, including the Pantum PC-210 series and models like the P2500, P2200, P6508, and M6550. The color "Dark Green" usually refers to the color of the drum surface, which is typically a metallic or polymer coating designed for use in laser printing systems.

In laser printers, the OPC drum is a critical component of the printing process. It works in tandem with the toner to transfer images and text onto paper. The OPC drum is charged and exposed to light (from the laser), causing it to attract the toner particles in the correct pattern to form the printed document.

If you are looking for a replacement drum for your Pantum printer, you would want to ensure the part number (like "Di OPC DRUM Dark Green") matches the specifications for your particular printer model (PC-210, P2500, P2200, P6508, M6550).

Before purchasing, double-check that the drum is compatible with your printer model to ensure it works correctly. Would you like to know where you can find such a part or need additional details on installation or compatibility?