Copyboard cover for a photographic copying machine

Details Copyboard cover for a photographic copying machine Copyboard cover for a photographic copying machine

1974-04-05

1976-03-16

Hix, L. T.

Photocopying

Projection printing and copying cameras

Detailed holder for original

355131, G03B 2762

Patent

active

039443671

ABSTRACT:
Disclosed is a copyboard cover for covering and holding in position documents placed upon a copyboard of a photographic copying machine. The copyboard cover in its preferred embodiment includes a frame, means for reciprocating the frame to and from a load position uncovering the copyboard for placement of a document on the copyboard and a copy position covering the document and the copyboard, a light-blocking cover material for covering the copyboard when the frame is in the copy position to block out undesirable light, a pressure plate mounted within the frame for holding the document flat against the copyboard, and means for reciprocating the pressure plate towards the copyboard in response to the frame moving into the copy position and from the copyboard in response to the frame beginning movement back to the load position. In the preferred form of the copyboard cover, the light-blocking cover material is provided by a flexible, wide belt which is moved over the document on the copyboard without relative movement between the document and the portion of the belt in contact with the document.

REFERENCES:
patent: 1414582 (1922-05-01), Roth
patent: 1417403 (1922-05-01), Moninger
patent: 3183805 (1965-05-01), Ritzerfeld et al.
patent: 3288047 (1966-11-01), Limberger

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