Patent ID: 8131061
Filing Date: 2012-03-06
Classification: G01N,G06T,H05K

Abstract:
1. An apparatus for inspecting solder printing comprising: an irradiation unit operable to irradiate a light on solder printed on a board by a solder printing machine; an imaging unit operable to image the solder irradiated by the light; an image processing unit operable to extract an actual solder region, which is a solder region that has actually been printed, among a certain multiplicity of solders on the board based on image data imaged by the imaging unit; and an ideal solder size generation unit operable to generate an ideal solder size indicating size the ideal solder regions and ideal solder position information indicating positions of the ideal solder regions on the board corresponding to the certain multiplicity of solders and based on the ideal solder regions which are solder regions in design data or manufacturing data; wherein the image processing unit: generates actual solder position information showing positions of actual solder regions on the board based on the actual solder regions; generates for each of the certain multiplicity of solders a print misalignment rate showing extent of positional misalignment between the ideal solder position information and the actual solder position information with respect to ideal solder size; and calculates a correction value based on the print misalignment rate, and outputs a correction value signal to the solder printing machine relating to solder printing position.