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:
Jul. 22, 2003
Filed:
May. 02, 2002
Applicant:
Inventor:
Ryoichi Ida, Tokyo, JP;
Assignee:
Adtec Engineering Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 2/760 ; G03B 2/742 ; G03B 2/720 ; B25B 1/100 ;
U.S. Cl.
CPC ...
G03B 2/760 ; G03B 2/742 ; G03B 2/720 ; B25B 1/100 ;
Abstract
A board stage of an aligner that can avoid bending of a printed circuit board to be exposed and accomplish high accurate exposure. In one preferred mode a suction plate having small holes is mounted on a supporting body on which a space bigger than the small holes is provided. The holes are connected to the space and to a vacuum device via an air passage and a bottom passage . The diameter of the suction hole is so less than 0.4 mm not to make at the printed circuit board such bending that causes exposure troubles.