Perforated doctor roll

Details Perforated doctor roll Perforated doctor roll

1976-08-23

1978-06-13

Suter, Ronald E.

Printing

Stenciling

Rotary machines

118406, 118414, B41F 1544

Patent

active

040942414

ABSTRACT:
A doctor roll arrangement, especially for stencil printing, comprising a hollow tube rollable on a support, the tube being provided with gaps through which part of a supply of an inking substance can enter into the interior of the tube, the supply being normally placed in front of the tube. The arrangement may include an internal doctor that is fitted into the tube, and being preferably adapted to revolve. The internal doctor may be constructed as a magnetic roller that can be attracted by a magnetic body. In accordance with the invention, the internal doctor can also be constructed as a perforated, hollow tube. Furthermore, a further magnetic roller can be fitted in the perforated tube, acting as a further internal doctor. Finally, at least one of the hollow tubes, the internal doctor, and the further internal doctor can consist of a magnetizable material that can be attracted by the magnetic body.

REFERENCES:
patent: 3718117 (1973-02-01), Lewicki, Jr.
patent: 3845712 (1974-11-01), Lewicki, Jr.
patent: 3965817 (1976-06-01), Ipek

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