Method of fabricating a charge plate for an ink jet printing device
AssigneeThe Mead Corporation
InventorsDonald L. Head, Edward A. Dudis
Life of this patent
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Abstract
A method is provided for forming a charge plate (10) for an ink jet printing device which includes coating a relatively more difficult to deplate metal layer (24) on a relatively easier to deplate core wire (22), mounting a plurality of the coated wires (20) in spaced parallel relation on a nonconductive support plate (12) and attaching leads to the metal layer (24) and then deplating the core wire (22) to leave the coating to form charge tunnels in the charge plate defining cylindrical holes through which droplets of printing liquid can pass to be charged by the electrodes.
Claims7
A method of forming a charge plate for an ink jet printing device, wherein the steps comprising:
- coating a relatively more difficult to deplate metal on a relatively easier to deplate core wire;
- positioning a plurality of said coated wires on a nonconductive support plate having notches formed in an edge portion thereof at predetermined equal intervals and at sufficient depth to locate said coated wires in parallel spaced relation along said edge portion;
- securing said coated wires to said support plate with nonconductive means;
- making said coated wires flush with opposite surfaces of said support plate longitudinal to longitudinal axes of said coated wires;
- deplating said core wires to leave said coating to form charge rings in said charge plate defining holes through which droplets of printing liquid can pass to be charged.
Dependencies are inferred from the claim text.