The HP CE278D Toner is a 2 pack of the HP 78 A Black Original LaserJet Toner Cartridges and contains two (2) of the HP 78 A Toner Cartridges. HP CE278A contains a single (1) Toner Cartridge.
According to the manufacturer this item only uses recycled HP shells and filled with their toner.
The HEWCF230A (CF230A) Black Original Cartridge yield is 1600 pages.
According to the manufacturer, the HEWF9J series cartridges have a 300mL output. They were unable to determine a page yield algorithm for these cartridges, as they are for the DesignJet series of printers, which are designed to print blueprints, drawings, and presentations and which can use varying amounts of ink.
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