Method for detecting absence of electronic elements on PCB


Application Number: 00109425
Application Date: 2000.06.23
Publication Number: 1330508
Publication Date: 2002.01.09
Priority Information:
International: H05K1/02
Applicant(s) Name: Yingyeda Co Ltd
Address:
Inventor(s) Name: Huang Yanmou
Patent Agency Code: 11127
Patent Agent: li qiang
Abstract A method for detecting the absence of electronic elements on PCB features that the obvious colour markers, fluorescent markers, or light reflecting markers are made on all of the solder pads on PCB, where electronic elements are soldered, before the PCB is soldered. After the PCB has been soldered, the absence of electronic elements can be easily sean according to their markers.