Hewlett-packard Development Company, L.p.

Michael F Klopfenstein

Kenneth R Williams

Geoff Wotton

Brent Ewald

Bradley B Branham

Kurt Steinke

Methods of compensating for position errors due to signal scaling, linearity, and offset between first and second members in a displacement transducer are provided, including: producing a first signal at the first member; producing a second signal at the first member; modulating the first signal at the second member to include at least one region with an invariant amplitude as the first and second members are displaced relative to one another along a measurement axis; determining a relation between a sample of the second signal and the invariant amplitude of the first signal as an indication of an error parameter; and generating a compensated sample based upon the determined relation.

Compensating for position errors in displacement transducers

An inkjet printer includes a microwave drying station passing media through a waveguide thereof. A vacuum source coupled to the waveguide draws air into the waveguide and thereby aides in disturbing and scrubbing a boundary layer of vapor at the media surface otherwise hindering efficient drying of media thereat. Supporting the media on a perforated belt through the waveguide couples media to the belt by vacuum force and thereby contributes to an overall media feed mechanism.

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Portland, OR, United States of America

Michael F Klopfenstein