Apparatus for inspecting surface strain of magnetic tape

Details Apparatus for inspecting surface strain of magnetic tape Apparatus for inspecting surface strain of magnetic tape

2005-01-25

2005-01-25

Stafira, Michael P. (Department: 2877)

Optics: measuring and testing

Material strain analysis

Reexamination Certificate

active

06847438

ABSTRACT:
A tape surface strain inspecting apparatus which optically inspects a surface of a tape and surface strain of the tape is characterized by being provided with a light emitting device emitting a light on the surface of the tape and forming a linear image which slants at a predetermined angle for a tape width direction of the tape, an image taking device taking the image formed on the surface of the tape, an image inspecting means investigating an edge linearity of an image taken by said image taking device, and a strain discriminating means discriminating largeness of surface strain of the tape based on an inspection result by the image inspecting means.

REFERENCES:
patent: 5270781 (1993-12-01), Singh et al.
patent: 5365333 (1994-11-01), Wirth et al.
patent: 6118132 (2000-09-01), Tullis
patent: 08-233560 (1996-09-01), None

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