Cleaning attachment for cylindrical printing screen

Details Cleaning attachment for cylindrical printing screen Cleaning attachment for cylindrical printing screen

1974-12-27

1976-10-19

Burr, Edgar S.

Printing

Stenciling

Multicolor

101116, 101425, B41F 1512, B41F 3500

Patent

active

039864502

ABSTRACT:
A cylindrical printing screen, rotatable about a horizontal axis, rolls on a continuously moving substrate to be imprinted and is internally provided with an applicator forming a gap through which a printing dye can pass to the substrate along the nadir of the screen. A codirectionally rotating scraper roll continuously sweeps the descending part of the outer screen surface and is in turn contacted by a squeeze roller or a doctor blade for the removal of excess dye. A similar cleaning device, e.g. in the form of an elongate suction nozzle, may be disposed along the rising part of the inner screen surface. The scraper roll can be continuously irrigated with rinse water and may be mounted, together with one or more spray heads, on a swingable frame for disengagement from the printing screen.

REFERENCES:
patent: 2648088 (1953-08-01), Barley
patent: 2731916 (1956-01-01), Koch
patent: 2792780 (1957-05-01), Jacob
patent: 3693547 (1972-09-01), Morgan
patent: 3785286 (1974-01-01), Giori

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