Accurate registration of printing screens to a platen

Details Accurate registration of printing screens to a platen Accurate registration of printing screens to a platen

1988-01-28

1992-03-10

Fisher, J. Reed

Printing

Stenciling

Stencils

B41F 1536

Patent

active

050941607

ABSTRACT:
Printing screens for the screen printing of garments (e.g. T-shirts and caps) are accurately registered with respect to a printing platen of a printing machine for four color printing, or the like. The equipment utilized for the accurate registration is exeptionally versatile and easy to use, requiring no skilled labor to properly implement it. A kit includes a registration plate having pins upstanding from its, the pins having a predetermined size and spacing; four clamps for engaging a screen frame and each with an extension having openings of the same size and spacing as the pins of the registration plate; and a collar for removable attachment to the printing machine and including upstanding pins of the same size and spacing as the registration plate pins. The collar can be for attachment to a T-shirt platen, cap platen, or printing machine arm. In use four positives are stacked and punched so that they have openings of the same size and spacing as those on the clamp. Each positive is mounted to a screen using the registration plate and clamp, and exposed. Then a screen is loosely mounted to the printing machine and moved so that the extension openings are in alignment with the collar pins, and then the screen is tightened into place on the machine. This is repeated for all screens, and after mounting of the screens on the machine the position of the clamps with respect to the screens are marked, and the clamps are removed before printing.

REFERENCES:
patent: 2680405 (1954-06-01), Faeber et al.
patent: 3356023 (1967-12-01), Schuttenberg
patent: 3483820 (1969-12-01), Schuttenberg
patent: 3605614 (1971-09-01), Gilman et al.
patent: 3943851 (1976-03-01), Inada et al.
patent: 4223055 (1980-09-01), Castilluzzo et al.
patent: 4738909 (1988-04-01), Jennings
Preregistration, Susan Venell, Screen Printing, pp. 92-95, Jul., 1983.

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