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:
Jul. 21, 2020
Filed:
Aug. 13, 2018
Funai Electric Co., Ltd., Daito-shi, Osaka, JP;
John Glenn Edelen, Lexington, KY (US);
Steve Bergstedt, Lexington, KY (US);
Funai Electric Co., Ltd., Osaka, JP;
Abstract
A fluid printhead including at least one fluid ejection element. The fluid ejection element includes a fluid chamber, a throat portion through which fluid is provided to the fluid chamber, and a heater element disposed within the fluid chamber. The fluid ejection element also includes a printhead condition detection system. The printhead condition detection system includes a first electrode at least a portion of which is disposed within the fluid chamber, the first electrode configured to receive a step voltage, a second electrode disposed within the throat portion, and a sense circuit electrically connected to the second electrode that generates an output based on the application of the step voltage to the first electrode as an indication of printhead condition.