HP

Original HP Head latch - Retains print cartridge in carriage assembly

Original HP Wheel guide - For tractor pin-feed wheels

Original HP Pinfeed wheel - Nubbed wheel

Original HP Reduction cluster gear (Double gear) - Mounts on right side of mech

Original HP Idler gear (Largest gear) - Driven by the paper drive motor

Original HP Drive gear - Mounts on the end of the square platen shaft