Combination registration pin

Details Combination registration pin Combination registration pin

1990-06-11

1991-06-11

Hayes, Monroe H.

Photocopying

Contact printing

Exposing on sensitized printing press plate or cylinder

355 78, 355 79, G03B 2704

Patent

active

050236598

ABSTRACT:
A compound register pin is provided for aligning lithographic plates and mask sheets which has a rectilinear base portion adapted to fit into the slot of the lithographic plate and a further outer cylindrical portion adapted to accurately fit within the hole of a mask sheet so as to accurately align the mask sheet over the lithographic plate for transfer of the mask sheet images to the lithographic plate in precise registration.

REFERENCES:
patent: 3436149 (1969-04-01), Wicker
patent: 4636067 (1987-01-01), Richards
patent: 4652118 (1987-03-01), d'Heureuse et al.

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