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. 06, 2004
Filed:
May. 09, 2001
Kimiyuki Yamasaki, Fukuoka, JP;
Michinori Tomomatsu, Fukuoka, JP;
Seikoh Abe, Fukuoka, JP;
Seiichi Miyahara, Fukuoka, JP;
Yuji Otake, Fukuoka, JP;
Takahiro Fukagawa, Fukuoka, JP;
Kunihiko Tokita, Fukuoka, JP;
Masayuki Mantani, Fukuoka, JP;
Minoru Murakami, Fukuoka, JP;
Abstract
A screen-printing apparatus for printing creamy solder paste on a substrate by attaching a screen mask to the substrate. A laser-measuring device mounted in the apparatus measures the top surface of the screen mask at a printing position and the top of the substrate at a substrate-measurement position by three-dimensional measurement, and detects a shape of the substrate or the screen mask, and determines whether or not they are acceptable. After screen printing is completed, the substrate and the screen mask undergo a printing inspection where their shapes are inspected. This provides not only inspection data of the printing results but also data for identifying the causes of print failures. As a result, the screen-printing apparatus, which has high-printing accuracy and can prevent printing failures from occurring, is provided.