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:
Jun. 06, 2017
Filed:
Dec. 28, 2015
Seiko Epson Corporation, Tokyo, JP;
Hidetoshi Yokoyama, Nagano, JP;
Masaki Tsukida, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
Provided is a liquid detecting unit and a liquid jetting device that avoid generation of air bubbles and deposit of the components of ink due to electrolysis of the liquid when detecting liquid information. The liquid detecting unit is provided with an alternating current generation circuit for generating an alternating current to be applied to the liquid, a detection output generation unit for generating a detection output for detecting the liquid information based on a potential of a first connection point in the alternating current generation circuit and a potential of a second connection point in the alternating current generation circuit, and a detection unit for detecting the liquid information based on the detection output.