Patent ID: 8317197

Claim:
An apparatus comprising: a media transport belt configured to transport media sheets in a process direction in an image production machine, the media transport belt including a plurality of belt apertures arranged along a cross-process direction, the cross-process direction perpendicular to the process direction, the plurality of belt apertures configured to conduct air to secure the media sheets on the media transport belt; a vacuum plenum assembly, the vacuum plenum assembly including a plurality of plenum apertures arranged along the cross-process direction, the plurality of plenum apertures configured to conduct air through at least some of the plurality of belt apertures, the plurality of plenum apertures including at least a first plenum aperture of a first width in the cross-process direction and at least a second plenum aperture of a second width in the cross-process direction, the first width different from the second width; and a media transport shift assembly configured to shift a relative position between the media transport belt and the vacuum plenum assembly in the cross-process direction to align at least some of the plurality of belt apertures with at least some of the plurality of plenum apertures.