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METHOD AND APPARATUS FOR NON-UNIFORM PRINT DENSITY COMPENSATION OF COMMONLY ENERGIZED PRINT ELEMENTS

IP.com Disclosure Number: IPCOM000034031D
Publication Date: 2005-Jan-13

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The IP.com Prior Art Database

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Authors:
Martin A.K. Schwan

Abstract

A method and apparatus for reducing light center printing by applying static and or dynamic spatial compensation that produces a strobe period extension based upon the number of actuated print elements and their distribution along the print head which ensures that a minimum energy level is transferred to each actuated print element. A plurality of data masks may be applied to divide the actuated print elements into subgroups for smaller strobe periods which together provide the minimum energy level to each print element but avoids overheating individual print elements which do not require the longest calculated strobe period. The method may be combined with existing history compensation logic and or the calculations performed within the printer processor or external to the printer.