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:
Aug. 10, 2021
Filed:
Feb. 10, 2020
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Takahiro Netsu, Nagano, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/175 (2006.01); G01F 23/292 (2006.01);
U.S. Cl.
CPC ...
B41J 2/17566 (2013.01); G01F 23/292 (2013.01); B41J 2002/17573 (2013.01);
Abstract
Provided is a production method of a printer that detects an amount of ink in an ink tank by using a light source and a photoelectric conversion device, the method including a first step of irradiating the ink tank with light by the light source in a state where the ink tank is not filled with ink to detect light from the ink tank by using the photoelectric conversion device, and a second step of storing a first correction parameter of an output of the photoelectric conversion device in a non-volatile storage unit of the printer based on the output of the photoelectric conversion device in the first step.