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. 12, 2025
Filed:
Feb. 29, 2024
Shuichi Honda, Kanagawa, JP;
Shuichi Honda, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A drive voltage control device includes a first drive power source to supply a first drive voltage to a first driver and a second driver connected to the first driver in series; a second drive power source to supply a second drive voltage; a voltage dropper; a first switching circuit, a second switching circuit, a third switching circuit, a third switching circuit, and a fourth switching circuit. The first switching circuit includes a first switching element between the first drive power source and the voltage dropper on the drive voltage line, and first circuitry configured to switch the first switching element between ON and OFF. The second switching circuit includes a second switching element between the second drive power source and the voltage dropper on the drive voltage line; and second circuitry configured to switch the second switching element between ON and OFF.