Monitoring device for missing and skewed sheets in sheet feeds

Details Monitoring device for missing and skewed sheets in sheet feeds Monitoring device for missing and skewed sheets in sheet feeds

1975-02-04

1980-01-22

Stoner, Jr., Bruce H.

Sheet feeding or delivering

Feeding

With means to interrupt feeding

192128, 200 82R, 271261, 271268, B65H 708

Patent

active

041846745

ABSTRACT:
A monitoring device for missing and skewed sheets in sheet feeding devices on printing machines having feed grippers includes at least two sensors spaced along the width of the feed table for monitoring the front edge of the sheet being fed. The sensors have air outlet means which are disposed to be covered by a transported sheet when the latter is properly aligned.

REFERENCES:
patent: 597652 (1898-01-01), McNutt
patent: 1790465 (1931-01-01), Dudley
patent: 2922646 (1960-01-01), Buttner
patent: 2937020 (1960-05-01), Layden

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