Patent ID: 7354121

Claim:
A printer for mounting in a conveyance, the printer including: (a) A cartridge including: (i) A base for receiving a stack of paper; (ii) An ink reservoir (b) A chassis adapted to be mounted in the conveyance, the chassis being adapted to receive the cartridge in use, the chassis including: (i) A printhead; (ii) Ink hoses for coupling the printhead to the ink reservoir; and, (iii) A feed system for feeding sheets of paper from the stack to the printhead for printing thereon, the feed system including: (a) A pick-up roller for engaging sheets of paper in the stack; (b) A first motor; and (c) A first gear train for coupling the motor to the pick-up roller; wherein the cartridge includes two first racks for engaging corresponding cogs mounted to an axle on the chassis to thereby prevent skewing of the cartridge as it is inserted into and removed from the chassis, the cartridge further including a second rack for engaging the first gear train such that operation of the gear train can be used to feed the cartridge into the chassis.