Patent ID: 8926086
Filing Date: 2015-01-06
Classification: B41J

Abstract:
1. A printer comprising a vacuum belt assembly for moving print media in a media feed direction along a media path, the vacuum belt assembly comprising: a plurality of spaced apart endless belts tensioned between first and second pulleys; a vacuum chamber for drawing print media onto an upper surface of the belts; and a plurality of vacuum antechambers arranged in one or more columns extending in the media feed direction, each vacuum antechamber communicating with the vacuum chamber, and each vacuum antechamber having a perimeter opening for suction engagement with print media, a length dimension of each perimeter opening extending longitudinally in the media feed direction, wherein: each column contains a first vacuum antechamber having a first perimeter opening positioned furthest upstream in the vacuum belt assembly and a second vacuum antechamber having a second perimeter opening positioned relatively downstream of the first vacuum antechamber, the upstream and downstream sides being defined with respect to the media feed direction the first perimeter opening is shorter than the second perimeter opening; and each first perimeter opening has a same length.