Detection and correction of skew between a reference and lenticu

Details Detection and correction of skew between a reference and lenticu Detection and correction of skew between a reference and lenticu

1998-12-21

2000-07-11

McPherson, John A.

Radiation imagery chemistry: process, composition, or product th

Including control feature responsive to a test or measurement

430 22, 430946, 355 22, 355 33, 355 77, G03C 900

Patent

active

060870540

ABSTRACT:
A lenticular image product is formed from a lenticular material having an array of cylindrical lenses and a photographic emulsion coated thereon, by scanning the lenticular material with an intensity modulated first beam of light in a direction parallel to the long axes of the cylindrical lenses to form a latent lenticular image in the photographic emulsion. A second beam of light having a wavelength outside of the range of sensitivity of the photographic emulsion is focused into two distinct spots or a line both with a width smaller than the pitch of the cylindrical lenses onto the lenticular material. The lenticular material is moved through the beam in a direction perpendicular to the axes of the cylindrical lenses to provide a page scan motion of the lenticular material and to modulate the angle of reflection or refraction of the second beam of light. The position of the angularly modulated second beam of light is sensed at two locations along the long axes of the lenticules to generate a skew correction signal to control the alignment of a writing beam to the lenticular material.

REFERENCES:
patent: 3534164 (1970-10-01), Glenn, Jr.
patent: 5681676 (1997-10-01), Telfer et al.
patent: 5689340 (1997-11-01), Young
patent: 5697006 (1997-12-01), Taguchi et al.
patent: 5812152 (1998-09-01), Torigoe et al.

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