System for generating hole diameter information of printed board

Details System for generating hole diameter information of printed board System for generating hole diameter information of printed board

1984-09-25

1987-04-21

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250226, G06K 710

Patent

active

046599380

ABSTRACT:
Hole diameter information is represented by color information. After detecting the color information, the detected color information is converted and generated into the hole diameter information. In this manner, a plurality of kinds of hole diameter information can be processed simultaneously, and efficiently with error reduction. The invention disclosed includes a pattern figure (2a) having a plurality of marks corresponding to holing positions of a printed board or the like and indicated by identification colors (3) corresponding to hole diameters of the holing positions. A detecting device 4 for generating detection signals corrsponding to the identification colors (2) of the marks in the pattern figure (2a), and hole diameter information generating means (6) for generating information representing the hole diameters by deciding the identification colors.

REFERENCES:
patent: 2760404 (1956-08-01), King
patent: 3890048 (1975-06-01), Abbondio
patent: 3894217 (1975-07-01), Ebukuro
patent: 3945729 (1976-03-01), Rosen
patent: 4494875 (1985-01-01), Schramm

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