Patent ID: 7690747

Claim:
An inkjet printer assembly comprising: a cartridge having an integrated pagewidth printhead integrated circuit (IC); a cradle configured to receive the cartridge such that the printhead IC is adjacent a media feed path; a driven mechanism configured to maintain the printhead and to feed print media through the media feed path, the drive mechanism including an air compressor for providing compressed air directed to keep the printhead IC clear of debris, and a motor to feed the print media; and a controller operatively connected to the cartridge and configured to determine a performance characteristic of the cartridge and to control operation of said driven mechanism and printhead IC in response to the determined performance characteristic of the cartridge, wherein the motor includes a transmission assembly having a direct drive coupling from a spindle of the motor to an impeller of the air compressor and a worm-gear and cog transmission of a media transport assembly, and the transmission assembly further includes a drive shaft arranged to engage and disengage with a roller upon rotation of the drive shaft in first and second directions respectively.