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:
Jul. 12, 2022
Filed:
Sep. 25, 2020
Seiko Epson Corporation, Tokyo, JP;
Eiji Takagi, Shiojiri, JP;
Masanori Koizumi, Suwa, JP;
Shunya Komatsu, Matsumoto, JP;
Shuichi Nakano, Shiojiri, JP;
Masashi Kamiyanagi, Matsumoto, JP;
Toru Matsuyama, Matsumoto, JP;
Abstract
A print head drive circuit outputs an output signal from a terminal electrically coupled to a low voltage logic signal input terminal to which a low voltage logic signal is input and has a first mode in which the print head drive circuit controls a print head to execute reading processing of reading information stored in a memory and not to execute ejection control processing of controlling whether or not to supply a high voltage signal to an ejecting portion group by switching a switch group in accordance with the output signal and a second mode in which the print head drive circuit controls the print head not to execute the reading processing and to execute the ejection control processing in accordance with the output signal.