Profile squeegee blade for screen process printing

Details Profile squeegee blade for screen process printing Profile squeegee blade for screen process printing

1990-05-29

1991-07-02

Burr, Edgar S.

Printing

Stenciling

Traveling-inker machines

152565, B41F 1544

Patent

active

050277030

ABSTRACT:
A profile squeegee blade is formed by forming the forward portion of a squeegee blade to create a leading cavity which extends the entire length of the squeegee blade, to define and control the shape and volume of leading ink. The ends of the profile squeegee cavity are sealed to preclude side run-off of the ink. Cavity end seals may be permanent or made as removable inserts to facilitate cleaning and manufacture. Additional control of the ink supply may be obtained through a series of weeper vent holes formed and extending between the internal cavity and the forward face of the squeegee blade, allowing the operator to maintain or release ink pressure by the blocking or unblocking of the holes. A preferred profile design extends vertically in front of the leading edge of the forwardly tilted squeegee blade, and includes a downwardly extending lip at its leading edge so as to provide forward enclosure for the cavity. Alternative to the internal profile cavity, an external cavity may be formed through the positioning of an appropriately cavity-shaped, resilient, external profile member attached to the front of the squeegee handle and contacting the squeegee blade along its length. The ends are sealed to maintain a constant volume of ink along the length of the squeegee blade. A groove may be formed along the length of the squeegee blade to permit sub-surface seating of the contacting end of the external profile member.

REFERENCES:
patent: 3110919 (1963-11-01), Barnby
patent: 3624860 (1971-12-01), Grimston et al.
patent: 4964336 (1990-10-01), Bock et al.

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