Print head charge shield
AssigneeHewlett-Packard Development Company, L.P.
InventorsSam Sarmast, Wen-Li Su
Life of this patent
Estimating the term…
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.
Claims16
1-7 (cancelled).
A print head comprising a firing mechanism and a charge shield for imparting an electrical charge into an ink drop during ejection from a nozzle of the print head and for shielding electrical noise generated by the firing mechanism.
A method for drop detection, comprising the steps of:
- detecting an ink drop fired from a nozzle of a print head;
- shielding electrical noise generated in the print head by firing the ink drop.
An apparatus for drop detection, comprising:
- means for detecting an ink drop fired from a nozzle of a print head;
- means for shielding electrical noise generated in the print head by firing the ink drop.
Dependencies are inferred from the claim text.