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:
Apr. 02, 2019
Filed:
Mar. 08, 2018
Seiko Epson Corporation, Tokyo, JP;
Hisashi Watamura, Shiojiri, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A printer includes a switching power supply circuit including a primary side circuit configured to perform a power switching operation, a secondary side circuit having a shunt regulator, a feedback configured to feed a comparison result between the output voltage output from the secondary side circuit and a reference voltage of the shunt regulator back to the primary side circuit to control the output voltage of the secondary side circuit, a control signal circuit configured to input a PSC signal input from an SOC to the photocoupler to control the output voltage of the secondary side circuit, and a switch circuit configured to cut off a current to be supplied to the shunt regulator in a case where the output voltage of the secondary side circuit is a low voltage in accordance with the input of the PSC signal.