Hewlett-packard Company

Mark G Wisnosky

Todd R Medin

Peter C Morris

William D Meyer

Bruce E Mueller

Greg S Smith

A transparent medium for printers and plotters having optical edge and media sensors has one or more reflective strips applied to the non-image side to trip the sensors. The reflective strips can include a narrow strip along one lateral edge to locate the edge, and a wider strip along the other lateral edge to locate the edge and trip the media sensor. The strips are applied by a pressure-sensitive adhesive, and are removed after the printing operations on the medium. The reflective strips can be formed of the same transparent base as the medium, with fillers added to provide sufficient opacity to trip the optical sensors.

Image forming method using transparent printer media with reflective

Achromatic Component Addition technique for producing printed ink-jet images of high quality, low granularity, and increased resolution of dithered gradients. Drops of chromatic inks are combined with drops of achromatic ink in any predetermined ratio and in any predetermined order on predetermined areas on a printing medium to produce imaged areas having differing lightness and lower chroma. The technique increases the number of color levels without increasing printer resolution and effectively increases resolution of dithered gradients by requiring fewer addressable pixels to produce the same color transition.

Method and apparatus for improving image quality

Transparent printer media with reflective strips for media sensing

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Poway, CA, United States of America

Mark G Wisnosky