Printing frame

Photocopying – Contact printing – Superimposed carriers

Patent

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Details

355 26, 355 91, 355 94, G03B 2702, G03B 2720, G03B 2732, G03B 2752

Patent

active

048273163

ABSTRACT:
A frame for properly aligning to glass masters on opposite sides of a substrate is disclosed. The frame includes: (a) first alignment means comprised of spherical balls projecting from one frame member intended to mate with associated concave ball receiving surfaces associated with the other frame member; and (b) second alignment means comprised of pins capable of being inserted into bores in one frame member and pin seats in the second frame member. The frame also includes a pump and solenoid valve. Depending upon the position of the valve, the pump will either draw air from between the frame members to close the frame or push air between the frame members to open the frame.

REFERENCES:
patent: 3199430 (1965-08-01), Brown
patent: 3531198 (1970-09-01), Delp
patent: 3619056 (1971-11-01), Hantusch et al.
patent: 3645621 (1972-02-01), Wally, Jr.
patent: 3695760 (1972-10-01), Orr
patent: 3762816 (1973-10-01), Wally, Jr.
patent: 3798782 (1974-03-01), Lindahl
patent: 4089603 (1978-05-01), Jacobs
patent: 4423954 (1984-01-01), Curti
patent: 4494867 (1985-01-01), Wally, Jr.
patent: 4525061 (1985-06-01), Oki
patent: 4582422 (1986-04-01), Stroud

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