Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Reexamination Certificate
2005-11-30
2009-08-18
Meier, Stephen D (Department: 2853)
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
C347S116000
Reexamination Certificate
active
07576763
ABSTRACT:
Reflex writing is a group of algorithms developed to maintain color registration in xerographic systems using multiple imagers, in which sequential color separations are written based on events in the spatial domain. The imaging system includes a raster output scanner imager for the black station and a light emitting diode bar for the color station. A simulated machine clock signal is generated based on a running average of a plurality of actual machine clock periods determined from pulses received from a photoreceptor module drive roll encoder. For each black scanline written the distance the belt travels is tracked using the simulated machine clock signal, and when the black latent image scanline has traveled the known distance between the two imagers, the light emitting diode scanline is written registered with respect to the raster output scanner scanline.
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U.S. Appl. No. 10/909,075, filed Jul. 30, 2004, titled “Printer Using Hybrid Reflex Writing Image”.
Alva Carlos O.
Bracco Rosario A.
Durbin John Alan
Fitzpatrick Anne K.
Martin Michael J.
Martinez, Jr. Carlos A
Meier Stephen D
Xerox Corporation
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