Hewlett-Packard Development Company, L.p.

John Heineck

David M Payne

Tiffany Lee Greyson

Derek Wade

Adam Greystone

Tyelisa C Shields

An example automatic document feeder device includes a document tray, a pair of rollers, at least one controller that automatically adjusts a height of the document tray and the pair of rollers based on an amount of media contained on the document tray, Sand a slide aligned to the pair of rollers to alter a media pathway distance as the height of the pair of rollers changes. The controller may adjust the height of the document tray independently from adjusting the height of the pair of rollers. A guide may be provided adjacent to the document tray, wherein the guide may bend as the height of the document tray increases. A sensor may determine a thickness of media contained on the document tray.

Automatic document feeders

An example of an apparatus including a memory to store a plurality of print profiles and sample page data. The apparatus includes a selection engine to select a first print profile and a second print profile from the plurality of print profiles. The apparatus includes a printing device to generate a first print sample in accordance with the first print profile and to generate a second print sample in accordance with the second print profile. The apparatus includes an input device to receive input to identify a preferred print sample. The apparatus includes a processor coupled to the memory and the input device, wherein the processor is to direct the selection engine to select a third print profile based on the first print profile, the second print profile, and the input to generate a third print sample for comparison with the preferred print sample.

Print profile adjustments via iterative sample selections

In an example, an apparatus is described that includes a transparent platen, a substrate, an array of light sources, and a sensor. The substrate is positioned on one side of the platen and has substantially uniform reflective properties. The array of light sources is positioned on an opposite side of the platen from the substrate and includes a plurality of light sources that emits light in a visible spectrum and a light source that emits light in an invisible spectrum. The sensor is positioned on the opposite side of the platen from the substrate and detects reflected portions of the light in the visible spectrum and the light in the invisible spectrum.

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Boise, ID, United States of America

John Heineck