Charge electrode array and combination for ink jet printing...

Details Charge electrode array and combination for ink jet printing... Charge electrode array and combination for ink jet printing...

G - Physics

01

D

101/96.021

G01D 15/16 (2006.01) B41J 2/085 (2006.01) G01D 15/18 (2006.01)

Patent

CA 1089912

CHARGE ELECTRODE ARRAY AND COMBINATION FOR INK JET PRINTING AND METHOD OF MANUFACTURE Abstract of the Invention A charge electrode array for use in an ink jet printing apparatus is formed by anisotropic etching of apertures through a single crystal silicon substrate of (110) orientation. Conductive diffusion layers in the walls of and adjacent to the apertures permit a charge to be placed on a jet stream passing through the apertures. Contacts can be formed on the adjacent diffusion layers to provide connection to an externally located charging circuit or the contacts may be omitted when the charging circuit is formed in the substrate itself and connected by diffusion or a metal layer to each adjacent diffusion layer. Jet nozzles and synchronization electrodes are shown incorporated in the charge electrode array to form a monolithic structure capable of performing a plurality of functions. Substrate contacts are also provided for biasing.

270285

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