Patent ID: 6957887

Claim:
A method of controlling media cockle, the method comprising: (a) providing a printzone between an inkjet and a platen, the printzone having an upstream end and a downstream end relative to a direction of media advancement through the printzone, and wherein the platen has an upper surface spaced from the inkjet and plural vacuum zones arranged side-by-side across the platen, each vacuum zone defining a recess in the platen having a closed end at the upstream end of the platen and an open end at the downstream end of the platen, and wherein each vacuum zone further defines a first floor level at the upstream end and a second floor level at the downstream end, the distance from the first floor level to the platen upper surface is greater than the distance from the second floor level to the platen upper surface; (b) advancing media through the printzone; (c) applying ink to the media; and (d) applying suction to the surface of the media facing the platen to draw the media away from the inkjet.