Sheet-surface analyser and method of analysing a sheet-surface

Details Sheet-surface analyser and method of analysing a sheet-surface Sheet-surface analyser and method of analysing a sheet-surface

2004-09-16

2008-12-16

Epps, Georgia Y (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

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

C250S559410, C250S559450, C356S239800, C356S429000

Reexamination Certificate

active

07465948

ABSTRACT:
The present invention relates to a sheet-surface analyser (10) including illuminating means (32) for casting shadows on the sheet-surface; capturing means (36) for capturing an image of the shadows; analysing means (40) for analysing the captured image to thereby analyse the sheet surface; and curving means (22) for curving the sheet, wherein the illuminating means and the curving means are configured to enable the illuminating means to cast shadows on a curved part of said sheet-surface, and the capturing means is configured to capture said shadow-image.

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