Incremental printing of symbolic information – Ink jet – Fluid or fluid source handling means
Reexamination Certificate
2005-06-09
2008-09-16
Meier, Stephen D (Department: 2853)
Incremental printing of symbolic information
Ink jet
Fluid or fluid source handling means
C347S099000
Reexamination Certificate
active
07425061
ABSTRACT:
An ink jet printer includes an ink supply system and a printhead with nozzles for ejecting ink drops. The printer determines the average size of the ejected ink drops by comparing the number of ink drops ejected in a predetermined time with the quantity of ink delivered through the printers ink supply system during that time. If the determined average ink drop size does not match predetermined ink drop size criteria, the printer adjusts the activation signals for the ink jet nozzles to alter the ink drop size. A solid ink printer determines the quantity of ink delivered through the ink supply system by counting the number of whole or partial ink sticks that pass a predetermined point in the ink supply system. The counter detects a sensing element formed on an external surface of the ink stick. Exemplary detectors include a mechanical arm, or a thermistor to detect a change in the printer melt plate temperature due to a change in the cross sectional area of an ink stick being melted.
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Copending U.S. Patent Application No., filed concurrently herewith, entitled “Ink Jet Printer Performance Adjustment,” by James D. Buehler et al., Pub Date: Dec. 14, 2006.
Copending U.S. Patent Application No., filed concurrently herewith, entitled “Ink Consumption Determination,” by James D. Buehler et al., Pub Date: Dec. 14, 2006.
Copending U.S. Patent Application No., filed concurrently herewith, entitled “Ink Level Sensing,” by Scott J. Korn, Pub Date: Dec. 14, 2006.
Copending U.S. Patent Application No., filed concurrently herewith, entitled “Ink Consumption Determination,” by Amin M. Godil et al., Pub Date: Dec. 14, 2006.
Copending U.S. Patent Application No., filed concurrently herewith, entitled “Ink Consumption Determination,” by Brent R. Jones et al., Pub Date: Dec. 14, 2006.
Buehler James D.
Knierim David L.
Korn Scott J.
Yusem Gustavo J.
Liang Leonard S
Maginot Moore & Beck
Meier Stephen D
Xerox Corporation
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