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:
Mar. 22, 2005
Filed:
Aug. 25, 2003
Yuji Otake, Fukuoka, JP;
Seiichi Miyahara, Kurume, JP;
Akira Maeda, Kasuga, JP;
Masayuki Mantani, Chikushino, JP;
Yuji Otake, Fukuoka, JP;
Seiichi Miyahara, Kurume, JP;
Akira Maeda, Kasuga, JP;
Masayuki Mantani, Chikushino, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
In a screen printing method of bringing a mask plate into contact with a substrate to print solder cream through a pattern hole on the substrate, a plate separating operation of separating the substrate from the mask plate after a squeegeeing step in which the solder cream is filled into the pattern hole comprises an operation pattern in which acceleration and deceleration pattern in which a descending speed is accelerated up to an upper limit speed and thereafter decelerated up to a lower limit speed is repeated plural times. Further, an initial upper limit speed in start of the plate separating operation is set higher than the succeeding upper limit speeds, whereby viscosity of the solder cream into the pattern hole in start of the plate separating operation is lowered, and the mask plate can be separated with a high accuracy throughout the entire range of the substrate.