Patent ID: 7837295

Claim:
A measuring arrangement that determines play of an inkjet cartridge pivot unit, comprising: an inkjet cartridge; a moveable cleaning and sealing unit configured to move into a sealing position with respect to said inkjet cartridge to clean said inkjet cartridge; a cartridge pivot unit connected to said inkjet cartridge and configured to pivot said inkjet cartridge relative to a stop formed by said cleaning and sealing unit; a motor and a gear train, said motor driving said cartridge pivot unit via the gear train, said gear train embodying mechanical play therein such that said cartridge pivot unit begins to move away from said stop only when said play is overcome; a pulse generator that emits pulses corresponding to operation of said motor; a movement sensor that detects movement of said cartridge pivot unit and emits a movement sensor output corresponding to the detected movement; and a counter that counts said pulses beginning at a start time when said motor begins to operate to move said cartridge pivot unit away from said stop and that ends at a stop time when, after said cartridge pivot unit mechanically separates from said stop, movement of the cartridge pivot unit, as represented by said movement sensor output, conforms to operation of said motor as represented by said pulses, with said count at said stop time representing said play.