Radiation imagery chemistry: process – composition – or product th – Including control feature responsive to a test or measurement
Reexamination Certificate
2008-03-25
2008-03-25
Young, Christopher G. (Department: 1795)
Radiation imagery chemistry: process, composition, or product th
Including control feature responsive to a test or measurement
C347S239000, C347S255000, C359S247000, C359S291000, C430S945000
Reexamination Certificate
active
10845042
ABSTRACT:
A platesetter may have an optical imaging head which includes a diffractive modulator having individually controlled ribbons associated with individual pixels imaged onto a printing plate. One method for reducing artifacts transferred to a medium includes the steps of: determining values of intensity versus pulse width variations for each ribbon of the modulator based upon empirical data; weighting the determined values according to a predetermined weighting factor dependent upon physical, optical, chemical and structural characteristics of a printing plate to yield an image on the printing plate having minimum visible artifacts; and applying the weighted values to ribbon drivers of the modulator.
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Agfa Corporation
Sabourin Robert A.
Young Christopher G.
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