Media stiffness detection device and method therefor

Details Media stiffness detection device and method therefor Media stiffness detection device and method therefor

2005-04-19

2005-04-19

Porta, David (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

With circuit for evaluating a web, strand, strip, or sheet

C271S258010, C271S259000, C271S265010, C271S265020, C073S849000, C073S862041

Reexamination Certificate

active

06881972

ABSTRACT:
A media processing system retrieves a sheet of media and transports it to an imaging process. Misalignment of media from retrieving and transporting is removed by a media realignment process which wedges the leading edge of the media into stopped rollers while additionally advancing the trailing edge of the media for a predetermined distance. The media flexes and forms an arching buckle which aligns parallel to the leading edge of the media with the stopped rollers, thereby removing the skew of the media in relationship with the stopped rollers. The amount of over-advancement of the trailing edge of the media is modified according to the stiffness of the media. A media stiffness sensor measures the media stiffness by quantifying the deflection of the media when a portion of the media is cantilevered into deflection-measuring sensors. Imaging processes are also improved by employing media stiffness measurements to modify imaging processes.

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