The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 28, 2004
Filed:
Aug. 13, 2002
Eric Louis Killmeier, Louisville, KY (US);
Paul Timothy Spivey, Lexington, KY (US);
Sean Terrence Weaver, Lexington, KY (US);
Gary Raymond Williams, Lexington, KY (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
A method for encapsulating electrical traces on a flexible circuit or TAB circuit and electrical connections between the flexible circuit or TAB circuit and a printhead substrate to inhibit ink corrosion thereof. The method includes applying a first adhesive to a first surface of the flexible circuit or TAB circuit. A second adhesive is applied to first surface of the flexible circuit or TAB circuit whereby the first and second adhesives effectively coat exposed portions of the traces and connections. The first and second adhesives are thermally curable epoxy compositions that are miscible with each other and the first adhesive has a first viscosity and first thixotropy index that is lower than a second viscosity second thixotropy index of the second adhesive. After applying the adhesive, the first and second adhesives are cured.