Lexmark International, Inc.

Bill C Chappel

William Paul Cook

Larry Steven Foster

Benjamin Alan Askren

Christopher Gregory Chee

James Philip Harden

Robert Leonard Burdick

William Scott Klein

David Michael Cseledy

An apparatus and method for ink-jet printing onto an intermediate drum in a helical pattern while correcting for image skew and aliasing. A plurality of ink-jet print heads place an image on an intermediate drum, impervious to ink, in a helical patter. To compensate for helical printing, the image is altered by nozzle placement and image manipulation to correct for skewing errors, and thereafter, the nozzle timing is adjusted to correct for aliasing. The plurality of print heads move parallel to the axis of rotation of the drum while the drum is simultaneously rotating, causing the image to be placed in a helical pattern. Once the entire image is placed on the drum, paper is rolled against the drum under pressure and the image is transferred thereto.

Apparatus and method for ink-jet printing onto an intermediate drum in a helical pattern

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Mt. Sterling, KY, United States of America

Bill C Chappel