Boots – shoes – and leggings
Patent
1991-11-20
1994-11-22
Black, Thomas G.
Boots, shoes, and leggings
364488, 364490, 364491, G01N 2304
Patent
active
053674677
ABSTRACT:
A cross operator is applied to the image of a wiring pattern provided on a printed board, to obtain respective sizes of the image in first and second directions. When the condition that the size of the wiring pattern in one of first and second directions is larger than a threshold value but the size in the other direction is smaller than the threshold value is satisfied, it is decided that the wiring pattern is a wiring line., The width of the wiring line is measured with the operator and is compared with a predetermined allowable range of the width. A land and a pin hole which may be present on the printed board do not satisfy the condition for detecting the wiring line and accurate inspection of the wiring line is attained.
REFERENCES:
patent: 5004339 (1991-04-01), Pryor et al.
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patent: 5019997 (1991-05-01), Haller
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patent: 5052816 (1991-10-01), Nakamura et al.
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Patent Abstracts of Japan, vol. 15, No. 111 (P-1180), Mar. 18, 1991 & JP-A-3002648, Ando Electric Co., Ltd., Jan. 9, 1991.
Atsuta Hitoshi
Kanai Takao
Mandai Ichirou
Sezaki Yoshinori
Black Thomas G.
Dainippon Screen Mfg. Co,. Ltd.
Walder, Jr. Stephen J.
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