Teacher's File

HP's 11 Long-life Black Printhead is a key component of the HP Modular Ink Delivery System delivering ultra-small ink drops for exceptionally refined print quality at superfast speeds. Separate black and colour printheads allow individual replacement when needed. The integrated printhead is around 1.25 cm wide, with 304 nozzles, resulting in printing up to twice as fast as previous inkjet printers. HP's Enhanced Colour Layering Technology (Photoret III) layers multiple drops of ink in a single dot to create smooth colour transitions and more directly printable colours.