Method for production of and distinction between combined validification and identification photographs
First Claim
1. A method of making an identification image in the form of a compositive photograph containing at least two different images, one of which is a holder image and the other of which is a check image, with the holder image not being clearly discernible when viewed normally because the check image dominates the view, which method comprises:
- projecting a first holder image on a sheet of photosensitive material through a first board formed of a plurality of slats disposed parallel to one another at an even pitch and separated by gaps, said gaps being less wide than the slats and being no greater than 45 mm in width, with said slats being approximately at least twice as wide as the width of said gap, with said board being positioned in close contact with said photosensitive sheet, whereby, only said photosensitive sheet portions defined by said gaps of said first board are initially exposed, andprojecting a second check image on said photosensitive sheet through a second board, which is positioned in close contact with said photosensitive sheet, with said second board slats being at least as wide as said gaps of said first board and lying over the previously exposed portions of said photosensitive sheet and having gaps between said second board slats which are at least twice as wide as the gaps of said first board and being aligned with unexposed portions thereof, whereby, only said photosensitive sheet portions defined by said gaps between said second board slats are exposed to form a compositive photograph containing said first and second images, said first image being contained in thin striate portions corresponding to said photosensitive sheet portions exposed through gaps between said first positioned board slats, and said second image being contained in thin, straite portions corresponding to said photosensitive sheet portions exposed through said gaps between said second positioned board slats, whereby, said second image is readily viewable and dominates said view, and said first image becomes apparent and dominates said view only when viewed through a lenticular lens having plano-convex portions disposed at the same pitch as said slats of said first board when placed in close contact with said composite photograph and moved into a position in which said lens plano-convex portions are aligned with respective striate portions containing said first image.
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Accused Products
Abstract
A method production of a composite photograph containing at least two images, i.e. a mark image and a holder image, and a method for distinguishing images in said composite photograph, said photograph being composed of alternate strips containing elements of the holder identify photograph and strips containing elements of validity check mark photograph, all strips being disposed at equal intervals from one another, and said photograph of the holder being hidden by said check mark photograph when viewed normally, and to be discernible only when viewed through a lenticular lens.
49 Citations
4 Claims
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1. A method of making an identification image in the form of a compositive photograph containing at least two different images, one of which is a holder image and the other of which is a check image, with the holder image not being clearly discernible when viewed normally because the check image dominates the view, which method comprises:
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projecting a first holder image on a sheet of photosensitive material through a first board formed of a plurality of slats disposed parallel to one another at an even pitch and separated by gaps, said gaps being less wide than the slats and being no greater than 45 mm in width, with said slats being approximately at least twice as wide as the width of said gap, with said board being positioned in close contact with said photosensitive sheet, whereby, only said photosensitive sheet portions defined by said gaps of said first board are initially exposed, and projecting a second check image on said photosensitive sheet through a second board, which is positioned in close contact with said photosensitive sheet, with said second board slats being at least as wide as said gaps of said first board and lying over the previously exposed portions of said photosensitive sheet and having gaps between said second board slats which are at least twice as wide as the gaps of said first board and being aligned with unexposed portions thereof, whereby, only said photosensitive sheet portions defined by said gaps between said second board slats are exposed to form a compositive photograph containing said first and second images, said first image being contained in thin striate portions corresponding to said photosensitive sheet portions exposed through gaps between said first positioned board slats, and said second image being contained in thin, straite portions corresponding to said photosensitive sheet portions exposed through said gaps between said second positioned board slats, whereby, said second image is readily viewable and dominates said view, and said first image becomes apparent and dominates said view only when viewed through a lenticular lens having plano-convex portions disposed at the same pitch as said slats of said first board when placed in close contact with said composite photograph and moved into a position in which said lens plano-convex portions are aligned with respective striate portions containing said first image. - View Dependent Claims (2)
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3. A method of making an identification image in the form of a composite photograph containing at least two different images, one of which is a holder image and the other of which is a check image, with the holder image not being clearly discernible when viewed normally because the check image dominates the view, which method comprises:
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projecting a first holder image onto a sheet of photosensitive material through a first board formed of a plurality of slats disposed parallel to one another at an even pitch and separated by gaps, said gaps being less wide than the width of said slats and having a dimension no greater than 45 mm, with said board positioned in close contract with said photosensitive sheet, whereby only said photosensitive sheet portions defined by said gaps of said first board are initially exposed, and projecting a second check image onto said photosensitive sheet through a second board which comprises a plurality of slats disposed parallel to one another at the same even pitch as that of said first board slats and separated by gaps, with said second board slats being less wide than the first board slats and the gaps between said second board slats being at least twice as wide as the gaps between said first board slats, with said second board being positioned in close contact with said photosensitive sheet and with said second board slats lying over exposed portions of said photosensitive sheet and with the gaps between the second board slats being aligned with unexposed portions of said photosensitive sheets, whereby;
only said photosensitive sheet portions aligned with said gaps of said second board are exposed to form a composite photograph containing said first and second images, said first image being contained in thin striate portions corresponding to said photosensitive sheet portions exposed through gaps between said first board slats and said second image being contained in thin striate portions corresponding to said photosensitive sheet portions exposed through said gaps between said second board slats, said first image becoming apparent only when viewed through a lenticular lens having plano-convex portions disposed at the same pitch as said slats of the first and second boards when placed in close contact with said composite photograph and moved into a position in which said lens plano-convex portions are aligned with said striate portions containing said first image. - View Dependent Claims (4)
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Specification