HP C4811A No 11. Cyan Printhead for Business Inkjet 10PS/20PS/50PS/2200/2250/ 2600. Page life - 24,000. The HP No.11 Cyan Printhead is the perfect product for ensuring that your machine is working at its best possible level. HP consumables are developed in close proximity to HP machines, ensuring that they work together without any problems, achieving quality prints with every use. With a yield of approximately 24,000 pages, you don't have to worry about constantly switching printheads, saving you both time and energy.