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. 16, 2020
Filed:
Oct. 26, 2018
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Shoji Sato, Okazaki, JP;
Satoru Arakane, Nagoya, JP;
BROTHER KOGYO KABUSHIKI KAISHA, Nagoya-shi, Aichi-ken, JP;
Abstract
A controller is configured to receive an output signal outputted from a light reception element. The controller is configured to perform: an existence detection of controlling a light emission element to emit light and detecting whether an ejection target exists at a facing position based on the output signal; and a distance detection of controlling the light emission element to emit light toward a surface of the ejection target and detecting a distance between the surface of the ejection target and a nozzle surface based on the output signal outputted from the light reception element upon receiving light reflected off the surface of the ejection target. An amount of change of the output signal with respect to change of the distance in the distance detection is larger than an amount of change of the output signal with respect to change of the distance in the existence detection.