About OPC Drum: Uniformly coated photo-sensitive component that is responsible to receive and transfer the image to final print. OPC Drum is triple layered coated to deliver all around consistent and uniform ID (image density) from top to bottom and left to right. Economic, Efficient & Stable: Easy Replacement; High Performance. Premium Raw Materials, Perfectly Compatible; No Damage to Printers. Premium Compatible OPC Drums are produced to meet or exceed the performance of an OEM (Original) HP12A OPC Drums at a far more reasonable price.Applicable Printers: 12A Compatible Drum Cartridge For HP Q2612A Compatible with HP Laserjet Printers 1010, 1012, 1015, 1018, 1020, 1022, 3020, 3030, M1005, M1319f etc.