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:
Sep. 20, 2022
Filed:
Jan. 24, 2020
Ricoh Company, Ltd., Tokyo, JP;
Norihiro Yoshida, Tokyo, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A stage driving device includes a secured section; a movable section supported movably along a movement plane relative to the secured section; a driver including a magnet at one of the secured section and the movable section and a coil at the other one of the secured section and the movable section; a magnetic sensor at one of the secured section and the movable section provided with the coil, the magnetic sensor configured to detect a position of the movable section with respect to the secured section; and a magnetic body at the one of the secured section and the movable section provided with the coil, the magnetic body configured to make the position of the movable section stable with respect to the secured section in a direction perpendicular to the movement plane using a magnetic force that acts between the magnetic body and the magnet.