Patent ID: 7806505

Claim:
A mobile telecommunications device comprising: a printhead with an array of nozzles for printing a media substrate; a capper assembly movable between a capped position covering the nozzles and an uncapped position spaced from the nozzles; a drive shaft for feeding the media past the printhead; and a print engine controller for operatively controlling the printhead, wherein the capper assembly is held in the uncapped position by the media such that it moves to the capped position upon disengagement with the media, during use, the print engine controller senses the number of complete and partial rotations of the drive shaft and adjusts the operation of the printhead in response to variations in the angular velocity of the drive shaft, the media substrate is a sheet and the trailing edge of the sheet disengages from the drive shaft before it is printed and is projected past the printhead by its momentum, the capper assembly lightly gripping the printed sheet so that it partially extends from the mobile telecommunications device.