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:
Oct. 11, 2016
Filed:
Mar. 13, 2014
Tomonori Maekawa, Kanagawa, JP;
Masahide Nakaya, Kanagawa, JP;
Tomokazu Takeuchi, Kanagawa, JP;
Katsuhito Suzuki, Kanagawa, JP;
Shohgo Miura, Kanagawa, JP;
Tomonori Maekawa, Kanagawa, JP;
Masahide Nakaya, Kanagawa, JP;
Tomokazu Takeuchi, Kanagawa, JP;
Katsuhito Suzuki, Kanagawa, JP;
Shohgo Miura, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
According to an aspect of the present invention, a power supply device includes: a DC power supply that outputs a DC voltage; an AC power supply that outputs any one of the DC voltage and a superimposed voltage being the DC voltage with an AC voltage superimposed thereon; and a bypass capacitor that charges a part of a voltage that is output from the AC power supply. The DC power supply starts outputting the DC voltage in a constant voltage mode and, when a predetermined condition is satisfied, switches from the constant voltage mode to a constant current mode to output the DC voltage in the constant current mode.