Substrate positioning device and substrate positioning method

Details Substrate positioning device and substrate positioning method Substrate positioning device and substrate positioning method

2011-07-05

2011-07-05

Luu, Thanh X (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

With circuit for evaluating a web, strand, strip, or sheet

C356S237400

Reexamination Certificate

active

07973300

ABSTRACT:
It is intended to achieve a high level of positioning accuracy for a substrate assuming a two-layer structure constituted with a transparent layer with a high level of light transmissivity and a nontransparent layer with a low level of light transmissivity. A substrate positioning device according to the present invention characterized in that only the edge of the nontransparent layer, not the edge of the transparent layer, is exclusively detected and the substrate is positioned based upon the detection results.

REFERENCES:
patent: 5781230 (1998-07-01), Nguyen et al.
patent: 6071796 (2000-06-01), Voutsas
patent: 6323954 (2001-11-01), Halter
patent: 6-45226 (1994-02-01), None
patent: 7-326665 (1995-12-01), None
patent: 10-199809 (1998-07-01), None
patent: 2006-19388 (2006-01-01), None

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