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:
Apr. 29, 1997
Filed:
Feb. 08, 1996
Noboru Chigira, Saitama-ken, JP;
Sanyo Electric Co., Ltd., Osaku-fu, JP;
Abstract
A positioning apparatus performs positioning of a second movable member relative to a first stationary member in respect of two (X and Y) directions perpendicular to each other. A first optical sensor detects a predetermined position of the second member relative to the first member in respect of the X direction. The first optical sensor has a light projector and a light receiver separately arranged on the first and second members such that they are opposed to each other in the Y direction, when the second member is in the predetermined position in respect of the X direction. A second optical sensor detects a predetermined position of the second member relative to the first member in respect of the Y direction. The second optical sensor has a light projector and a light receiver separately arranged on the first and second members such that they are opposed to each other in the X direction, when the second member is in the predetermined position in respect of the Y direction. An X-direction moving mechanism moves the second member in the X direction. A Y-direction moving mechanism moves the second member in the Y direction. A controller stops a moving operation of the X-direction moving mechanism based on a detection signal from the first optical sensor, and stops a moving operation of the Y-direction moving mechanism based on a detection signal from the second optical sensor.