Rotary-screen printer with magnetically attracted wiper

Details Rotary-screen printer with magnetically attracted wiper Rotary-screen printer with magnetically attracted wiper

1984-05-25

1985-12-10

Coughenour, Clyde I.

Printing

Stenciling

Rotary machines

101124, B41L 1306

Patent

active

045571945

ABSTRACT:
The nadir of a cylindrical printing screen rotatable about a horizontal axis is pressed against an underlying substrate, moving over a flat support, by a wiper in the form of a roller or a blade which is attracted by a bank of electromagnets having pole faces flush with the upper surface of the support. The line of contact between the screen and the substrate, determined by the location of the wiper inside the screen, is offset in the direction of substrate motion from a common midplane of the underlying pole faces; the extent of this offset, designed to stabilize the position of the wiper, is adjustable to accommodate substrates of different thicknesses.

REFERENCES:
patent: 3592132 (1968-07-01), Weber
patent: 3902414 (1975-09-01), Zimmer
patent: 3919973 (1974-04-01), Zimmer
patent: 4090443 (1978-05-01), Gasser

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