Patent ID: 6808259
Filing Date: 2004-10-26
Classification: B41J

Abstract:
An inkjet printing apparatus which moves print media along a media path, comprising:an inkjet printhead having a plurality of inkjet nozzles which eject ink onto a portion of said media located within a print-zone; a drive shaft located upstream of the printhead and incrementally rotateable about a longitudinal axis to advance the media, the drive shaft having a first radius over a central length and a second radius less than the first radius at a first recess and a second recess, each said recess being peripheral to the central length and extending around a circumference of the drive shaft, the first and second radii being substantially perpendicular to the longitudinal axis; a pinch devices which stabilizes the media against the drive shaft; a first guide aligned with the first recess; and a second guide aligned with the second recess; wherein each of the first and second guides are spaced apart from the drive roller and spaced from said longitudinal axis by a distance less than the first radius but greater than the second radius.