Patent ID: 7878625

Claim:
A shuttle assembly in a digital printer, the shuttle assembly comprising: a printhead shuttle arranged to carry at least one printhead arranged to print on a receiver, the printhead shuttle arranged to be driven by a first motor system having a first positional accuracy; a utility shuttle including at least one utility device arranged to accompany printing on the receiver, the utility shuttle arranged to be driven by a second motor system which is coupled to the first motor system such that a total movement of the printhead shuttle is a summation of a movement of the first motor system and a movement of the second motor system, the second motor system having a second positional accuracy, and the printhead shuttle is arranged to be positioned independently of the utility shuttle; and a distance sensor arranged to measure a distance value between the printhead shuttle and the utility shuttle, the distance value being used to control a position of the utility shuttle relative to a position of the printhead shuttle within preset values; wherein the positional accuracy of the first motor system is higher than the positional accuracy of the second motor system.