Stencil exposure seal combination

Details Stencil exposure seal combination Stencil exposure seal combination

1976-10-19

1978-04-11

Suter, Ronald E.

Printing

Stenciling

Stencils

355 91, 355 93, G03F 900

Patent

active

040833011

ABSTRACT:
Stencil exposure apparatus having a flexible compressible peripheral seal element suspended by a plurality of radiating tension straps in a selected configuration between a translucent stencil pattern support surface on one side, and a stencil fabric layer retained in a stencil frame or chase on the other side, there being a suction connection for the space enclosed by said seal, said translucent surface, and said stencil fabric.
In one apparatus embodiment disclosed, the peripheral seal is a traveling seal suspended on a stencil frame carriage which is selectively shiftable relative to the translucent surface and supports the stencil chase.
In another apparatus embodiment disclosed, the tension straps are shiftable to vary the dimensions of the area enclosed by the peripheral seal.

REFERENCES:
patent: 654421 (1900-07-01), Soltman
patent: 3007390 (1961-11-01), Forester et al.
patent: 3463587 (1969-08-01), Oltra et al.
patent: 3506348 (1970-04-01), Brodie

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