Lenticular-printing calibration targets

Details Lenticular-printing calibration targets Lenticular-printing calibration targets

2006-04-25

2006-04-25

Hirshfeld, Andrew H. (Department: 2854)

Typewriting machines

Including control of format and selection of type-face by...

Including means for responding to input program or incoming...

C327S165000

Reexamination Certificate

active

07033090

ABSTRACT:
Calibration targets are generated for lenticular printing. A method involves generating a square wave at a frequency determined by a target pitch for the lenticules. Then filtering the square wave to eliminate aliased harmonics having regard to a Nyquist frequency determined by the resolution of the printer and the required calibration precision. The resulting spatial domain square wave is printed onto a lenticular sheet to produce a calibration target. The targets are used to determine the true pitch of lenticules on a lenticular sheet.

REFERENCES:
patent: 4168484 (1979-09-01), Wright, Jr.
patent: 2003/0081229 (2003-05-01), Underwood et al.

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