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US 6,896,787 B2Granted
Metal articles with smooth surface having durable visible marking and method of manufacture
AssigneeJas. D. Easton, Inc.
InventorPeter Yan
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Abstract
Metal articles having a durable visible marking on a smooth Type III hard anodized surface particularly useful for shock absorber tubes are produced by applying an alkaline solution to the anodized surface for not less than about 15 seconds at temperature of 100°-140° F.; applying a pattern of lacquer based solvent ink to said surface; and sealing the applied pattern by applying a liquid selected from the group consisting of nickel acetate, cobalt acetate and boiling water to said pattern.
Claims17
A method of producing a metal article having a durable visible marking and smooth surface comprising the steps of:
- a) applying an alkaline solution to a Type III hard anodized surface of a metal article for not less than about 15 seconds at temperature of 100°-140° F. to open pores in said hard anodized surface;
- b) applying a pattern of lacquer based solvent ink to said surface;
- c) allowing said pattern to dry;
- and
- d) sealing said pattern by applying a liquid selected from the group consisting of:
- nickel acetate, cobalt acetate and boiling water to said pattern.
3 more elements
Dependencies are inferred from the claim text.