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SYMMETRIC DILATION Disclosure Number: IPCOM000027282D
Original Publication Date: 1996-Feb-29
Included in the Prior Art Database: 2004-Apr-07

Publishing Venue

Xerox Disclosure Journal


As is well known optical enlargement of the printing spot in a laser printer produces a darker output print. With white write xerography like that used in the Xerox 4235 the optical spot cannot be sufficiently enlarged to provide printer outputs as dark as desired. Asymmetric dilation has been used to increase the darkness of symmetrical optical spots without enlarging the optical spot. While producing a darker spot, asymmetrical dilation also produces undesired tints and halftones.