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:
Sep. 24, 2013
Filed:
Nov. 01, 2010
Kenji Matoba, Nagoya, JP;
Kenji Matoba, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, Aichi, JP;
Abstract
A liquid ejection apparatus includes a valve which adjusts the flow rate of a recording liquid in a return passage connecting an outflow opening with a tank, a pump which supplies the recording liquid from the tank to the internal passage via the supply passage, a detecting unit which detects an operating state of the pump, and a calculating unit which calculates the viscosity of the recording liquid. The calculating unit calculates the viscosity of the recording liquid based on the operating state of the pump detected by the detecting unit, while the recording liquid in the tank circulates so as to serially pass through the supply passage, the internal passage, and the return passage.