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:
Jun. 15, 2010
Filed:
Apr. 30, 2004
Hirohito Ito, Tochigi, JP;
Hirohito Ito, Tochigi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In driving a movable body in a target direction, a force in another direction, which may act on the movable body, is reduced. A system includes a current amplifier, which drives X1 and X2 electromagnets (a first actuator) for aligning the movable body in the X direction, a system including a current amplifier, which drives Y1 and Y2 electromagnets (a second actuator) for aligning the movable body in the Y direction, a subordinate direction component correction unit, which reduces a force in the Y direction acting on the movable body when driving the movable body in the X direction by the first actuator, and a subordinate direction component correction unit, which reduces a force in the X direction acting on the movable body when driving the movable body in the Y direction by the second actuator.