Process for the preparation of silk-screens for use in printing

Details Process for the preparation of silk-screens for use in printing Process for the preparation of silk-screens for use in printing

1996-03-29

1999-02-09

Hughes, S. Thomas

Metal working

Method of mechanical manufacture

Assembling or joining

29458, 1011284, 3810291, B23P 1102, B41C 114, D06C 308

Patent

active

058678824

ABSTRACT:
An apparatus and process for the manufacture of silk-screens is provided for use in the printing of halftones, e.g. in a four color printing process. The angle at which the mesh of a silk-screen should be relative to the screen frame to eliminate or at least minimize or localize moire' is predetermined for each of the color film separations. This angle is then carried to stretching apparatus for the woven fabric from which the silk-screens are to be made. The stretching appararatus has a table that is provided with a plurality of rotatable members. A screen frame is placed on each of the rotatable members and the rotable member is rotated to the angle determined by the pre-registration apparatus. The fabric is stretched to the desired tension and the screen frames having been provided at the desired angles are adhered to the stretched fabric, resulting in the mesh in each silk-screen being at the correct angle with respect to the screen frame.

REFERENCES:
patent: 4291116 (1981-09-01), Tibbetts
patent: 4337134 (1982-06-01), Norman
patent: 4368587 (1983-01-01), Childs
patent: 5220867 (1993-06-01), Carpenter
patent: 5327828 (1994-07-01), Barocas et al.
patent: 5353701 (1994-10-01), Casagrande
patent: 5355791 (1994-10-01), Benedetto et al.
patent: 5396721 (1995-03-01), Levine et al.
patent: 5580698 (1996-12-01), Andersen
patent: 5581918 (1996-12-01), Schilling et al.

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