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. 01, 2021
Filed:
Apr. 24, 2020
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Aichi-Ken, JP;
Abstract
A liquid ejection apparatus is provided, comprising a liquid ejection head, a signal output circuit which outputs different signals depending on the number of ejection-defective nozzles in which any defective discharge of a liquid occurs, and a controller. The controller executes judgment to judge whether a first condition that any ejection-defective nozzle is absent in two or more nozzles for constructing a first nozzle group is satisfied, a second condition that all of the nozzles are the ejection-defective nozzles is satisfied, or a third condition that only some of the nozzles are the ejection-defective nozzles is satisfied, on the basis of the signal outputted from the signal output circuit.