Work alignment apparatus for double-sided exposure of a work

Details Work alignment apparatus for double-sided exposure of a work Work alignment apparatus for double-sided exposure of a work

1987-08-13

1988-08-16

Hayes, Monroe H.

Photocopying

Projection printing and copying cameras

Photographing on both sides of photo-sensitive paper

355 72, 355 99, 355 53, G03B 2732, G03B 2752

Patent

active

047647914

ABSTRACT:
Disclosed is a work alignment apparatus for double-sided exposure of a work which serves to convey to and locate the work in an exposing position such that the work is exposed on either side thereof between printing frames each holding an image mask on each corresponding side of the work. The work alignment apparatus comprises means for detecting and calculating an amount of misalignment between the work in the exposing position and each of the image masks, an alignment stage disposed outside the printing frames and adapted to determine a mounting position of the work in an alignment coordinate system in accordance with the misalignment, and means for conveying the work, in the mounting position located in the alignment coordinate system, to the exposing position.

REFERENCES:
patent: 4389115 (1983-06-01), Richter
patent: 4565443 (1986-01-01), Yazaki
patent: 4614425 (1986-09-01), Copeland et al.
patent: 4721980 (1988-01-01), Yazaki

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