Patent ID: 7590545

Claim:
An information retrieval system for retrieving and processing information relating to a current state of one or more serviceable items of a conveyance, the system including: a data collecting means for collecting data on the one or more serviceable items from respective sensors, the data collecting means collecting the data in an unformatted form; a subsystem operable to monitor the collected data and determine from the collected data a current state of the one or more serviceable items, the subsystem further operable to determine if any of the one or more serviceable items requires servicing; a layout engine operable to receive the collected data in an unformatted form, and to format the data to conform to a user selected template; a processing means, in communication with said data collecting means and said subsystem, for processing said formatted collected data into a page description language; a printing unit, installed in said conveyance, for printing said formatted data according to the page description language; a cartridge for holding print media and ink, the cartridge adapted for insertion into the printing unit, and provided with a toothed rack on one side thereof; and a user terminal for providing a user interface to said data collecting means, said subsystem, said processing means, and said printing unit, wherein the toothed rack engages the printing unit upon insertion of the cartridge into the printing unit, whereby skewing of the cartridge with respect to the printing unit is inhibited.