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:
Feb. 05, 2013
Filed:
Dec. 29, 2008
Yimin Guan, Lexington, KY (US);
Burton Lee Joyner, Ii, Lexington, KY (US);
Zachary Justin Reitmeier, Lexington, KY (US);
Carl Edmond Sullivan, Stamping Ground, KY (US);
Yimin Guan, Lexington, KY (US);
Burton Lee Joyner, II, Lexington, KY (US);
Zachary Justin Reitmeier, Lexington, KY (US);
Carl Edmond Sullivan, Stamping Ground, KY (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
A fin-shaped heater stack includes first strata configured to support and form fluid heater elements responsive to repetitive electrical activation and deactivation to produce repetitive cycles of ejection of a fluid, and second strata on the first strata to protect the fluid heater elements from adverse effects of the repetitive cycles of fluid ejection and of contact with the fluid. The first strata include a substrate having a front surface, and heater substrata supported on the front surface. The heater substrata have opposite facing side surfaces which extend approximately perpendicular to the front surface and an end surface interconnecting the side surfaces which extends approximately parallel to the front surface such that the heater substrata is provided in either an upright or inverted fin-shaped configuration on the substrate with the fluid heater elements forming the opposite facing side surfaces of the heat substrata.