Print head charge shield

Details Print head charge shield Print head charge shield

2005-10-04

2005-10-04

Nguyen, Thinh (Department: 2853)

Incremental printing of symbolic information

Ink jet

Controller

Reexamination Certificate

active

06951379

ABSTRACT:
A printer according to the present techniques includes a print head having at least one nozzle for ejecting an ink drop and a sensing element for detecting the ink drop. The print head includes a charge shield for imparting an electrical charge into the ink drop during ejection from the nozzle and for shielding electrical noise generated in the print head.

REFERENCES:
patent: 3852768 (1974-12-01), Carmichael et al.
patent: 3977010 (1976-08-01), Erickson et al.
patent: 4333083 (1982-06-01), Aldridge
patent: 4489335 (1984-12-01), Watanabe et al.
patent: 4651163 (1987-03-01), Sutera et al.
patent: 60253554 (1985-12-01), None
patent: 62063891 (1998-09-01), None
“Feedback for Synchronized Pressure Jet Using Optical Sensor”, IBM Technical Diclosure Bulletin vol. 16, No. 12, May 1974, pp. 3877, 3878.
British Search Report dated May 28, 2004.

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