H - Electricity – 05 – K
Patent
H - Electricity
05
K
101/96.021
H05K 3/20 (2006.01) B41J 2/085 (2006.01)
Patent
CA 1227699
ELECTROFORMED CHARGE PLATE FOR INK JET PRINTERS Abstract of the Disclosure A charge plate for an ink jet printer comprises a plurality of electrodes and connecting circuit paths embedded into a molded dielectric substrate and anchored thereinto by means of retain- ing flanges which extend from the innermost embedded ends of the electrodes and circuit paths. The charge plate is formed by means of photolithographic, plating and molding techniques. Nickel electrodes and circuit paths are plated through a position defining pattern in a photoresistive covering onto a copper foil sheet to a height slightly exceeding the photoresistive covering to form the retaining flanges. The photoresistive covering is then removed and the composite foil sheet/plating is bent toward the plating such that the electrodes extend at approximately a 90° angle relative to the remainder of the sheet. The bent composite is then placed into mold and an epoxy substrate is formed to engage and surround the electrodes and circuit paths. After curing, the substrate with the embedded circuit paths and electrodes is removed from the mold, excessive copper foil is trimmed from the edges and it is placed in a copper etchant to remove the copper foil sheet thereby exposing the charge surface and the conducting circuit path surface of the molded charge plate substrate.
458154
Eastman Kodak Company
Gowling Lafleur Henderson Llp
LandOfFree
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