Metal working – Means to assemble or disassemble – Means to assemble electrical device
Reexamination Certificate
2005-09-13
2005-09-13
Arbes, Carl J. (Department: 3729)
Metal working
Means to assemble or disassemble
Means to assemble electrical device
C029S739000, C029S759000
Reexamination Certificate
active
06941646
ABSTRACT:
A method of detecting a relative positioning error between a fiducial-mark imaging device and a substrate-holding device in an electric-component mounting system wherein the fiducial-mark imaging device is arranged to take an image of at least one substrate fiducial mark provided on a circuit substrate, and a positioning error of the circuit substrate as held by the substrate-holding device is detected on the basis of the image of the at least one substrate fiducial mark, so that an electric component is mounted by a mounting head onto the circuit substrate, so as to eliminate the positioning error of the circuit substrate, wherein the fiducial-mark imaging device is operated to take an image of at least one holding-device fiducial mark provided on the substrate-holding device, and the relative positioning error between the fiducial-mark imaging device and the substrate-holding device is detected on the basis of a positioning error of the image of the holding-device fiducial mark within an imaging area of the at least one fiducial-mark imaging device.
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U.S. Appl. No. 09/721,953, filed Nov. 27, 2000, Kawada.
Arbes Carl J.
Fuji Machine Mfg. Co. Ltd.
Oliff & Berridg,e PLC
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