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. 11, 2009
Filed:
Oct. 27, 2006
Applicant:
Yoshihisa Ashikawa, Kanagawa, JP;
Inventor:
Yoshihisa Ashikawa, Kanagawa, JP;
Assignee:
Ricoh Company, Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An AC high-voltage device includes a voltage controlling unit that controls an AC transforming unit. The AC transforming unit transforms supplied power to an AC high voltage. The voltage controlling unit includes a constant-voltage controlling unit and an turn-off unit. The constant-voltage controlling unit controls the AC transforming unit when an over-current does not occur in the AC high voltage. The turn-off unit turns off the AC transforming unit during a period in which an over-correct occurs. The constant-voltage controlling unit re-starts the AC transforming unit after the period.