3D photographic printer with direct key-subject alignment

Details 3D photographic printer with direct key-subject alignment 3D photographic printer with direct key-subject alignment

1993-05-28

1995-04-18

Gellner, Michael L.

Photocopying

Projection printing and copying cameras

Stereoscopic

355 33, 355 40, 355 75, 355 43, 348 87, 348 94, 348 95, G03B 2732

Patent

active

054082943

ABSTRACT:
A 3D printer and method which uses a beamsplitter or a mirror to form a reflected image which is a mirror image of the actual image exposed on the print material. A CCD detector array is placed on the reflected image plane to monitor the key-subject registration. The beamsplitter or mirror is physically linked to the print material cassette so that the CCD detector array shares the same projected image that is exposed on the print material regardless of the printing position. With such an approach, the CCD detector array can directly detect any off-alignment due to mechanical errors or distortion/aberration by the projection lens.

REFERENCES:
patent: 5028950 (1991-07-01), Fritsch
patent: 5036356 (1991-07-01), Lo

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