Hewlett-packard Development Company, L.P.

Gidl Amir

Michael Plotkin

Eyal Shelef

Shlomo Harush

Haim Livne

Craig Breen

Gregory Braverman

Maya Shalev

Barak Markus

A correction method for correcting unintended spatial variation in lightness across a physical image produced by a xerographic process, the method comprising producing a test image using the xerographic process, measuring a difference between actual lightness and intended lightness across at least part of the test image, and varying the light source level used subsequently in the xerographic process to correct for the measured unintended difference.

Correction method, apparatus, data carrier or system for correcting for unintended spatial variation in lightness across a physical image produced by a xerographic process

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Ness Ziona, Israel

Gidl Amir