Method and apparatus for screen printing registered images on op

Details Method and apparatus for screen printing registered images on op Method and apparatus for screen printing registered images on op

1979-01-23

1981-06-30

Crowder, Clifford D.

Printing

Stenciling

Traveling-inker machines

101129, B41F 1536, B41F 1508

Patent

active

042756553

ABSTRACT:
A method and machine are disclosed for screen printing acid-resist mirror inversion images in registration on opposite sides of a metal web with a degree of precision sufficient to permit the incorporation of screen printing techniques in the fabrication of lead frames, electromagnetic core laminations, and other metal plate products by chemical milling processes. A matched pair of upright screen stencils supported in spaced relation on opposite sides of the web is provided with a cooperable pair of squeegees for printing through the image areas of the stencils. The directly opposed squeegees are mounted on a common reciprocable carriage for conjoint movement such that printing on opposite sides of the web is effected synchronously. In preferred forms, a web drive is provided for incrementally advancing the web between the stencils and for holding the web under tension during printing. A screen separator mounted on the carriage in offset relation to the squeegees assures release of the stencils from the web after printing.

REFERENCES:
patent: 3102472 (1963-09-01), Kiecklefer
patent: 3398680 (1968-08-01), Moskowitz
patent: 3955501 (1976-05-01), Bubley et al.
patent: 4005651 (1977-02-01), Sigel
patent: 4084506 (1978-04-01), Nakatani

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