US5772250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copy restrictive color-reversal documents
Assignee: Eastman Kodak Co
•
Filing: 1997-04-11
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Granted: 1998-06-30
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Expires: 2017-04-11
Abstract
Abstract A media for restricting the copying of a color-reversal document utilizing one or more microdots that are embedded in the color-reversal document for providing a non-visual, but machine detectable signal. By detecting the presence of one or more microdots in the color-reversal document, a copy machine is controllably prevented from copying the color-reversal document.
Inventors
- 👤 John Gasper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:43
CPC Classifications
B; B42; B42D; B42D15/00; B41; B41M; B41M3/00; B41M3/14; B41M3/146; B42D25/00; B42D25/20; B42D25/29; G; G03; G03C; G03C5/00; G03C5/08; G03G; G03G21/00; G03G21/04; G03G21/046; Y; Y10; Y10S; Y10S283/00; Y10S283/902
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
50 words
A color-reversal copy restrictive medium comprising: a support layer; at least one image-forming layer supported by said support layer; and at least one of said at least one image-forming layers capable of forming a pattern of microdots of diminished optical density from a latent image of a pattern of microdots.
Claim 2
Dependent Claim
50 words
A color-reversal copy restrictive medium comprising: a support layer; at least one image-forming layer supported by said support layer; and at least one of said at least one image-forming layers capable of forming a pattern of microdots of diminished optical density from a latent image of a pattern of microdots.
Claim 3
Dependent Claim
25 words
The color-reversal copy restrictive medium according to claim 1 wherein said pattern of microdots is absent from areas of the document of minimal optical density.
Claim 4
Dependent Claim
20 words
The color-reversal copy restrictive medium according to claim 1 wherein said microdots have a spectral character of low visual perceptibility.
Claim 5
Dependent Claim
57 words
The color-reversal copy restrictive medium according to claim 1 wherein the equivalent circular diameter of the microdots is 300 microns or less with the edge of a microdot defined by the isodensity profile at which the optical density is midway between the minimum density of the microdot and the density of the region adjacent to the microdot.
Claim 6
Dependent Claim
23 words
The color-reversal copy restrictive medium according to claim 1 wherein the spatial arrangement of the microdots is periodic with one or more periodicities.
Claim 7
Dependent Claim
23 words
The color-reversal copy restrictive medium according to claim 1 wherein the spatial arrangement of the microdots is aperiodic with one or more aperiodicities.
Claim 8
Dependent Claim
23 words
The color-reversal copy restrictive medium according to claim 1 wherein the spatial arrangement of the microdots is a combination of periodic and aperiodic.
Claim 9
Dependent Claim
16 words
A color-reversal copy restrictive medium according to claim 1 wherein said pattern of microdots is unique.
Claim 10
Dependent Claim
38 words
The color-reversal copy restrictive medium according to claim 1 wherein the microdots have an optical density, size, and spacing so as to not visually modify the lightness, color balance, or tone reproduction of the image in the document.
Claim 11
Dependent Claim
18 words
The color-reversal copy restrictive medium according to claim 1 wherein the microdots are minimally spaced 0.5 mm center-to-center.
Claim 12
Dependent Claim
74 words
A color-reversal copy restrictive medium comprising: a support layer; at least one image-forming layer supported by said support layer; and at least one of said at least one image-forming layers capable of forming a pattern of microdots of diminished optical density from a latent image of a pattern of microdots wherein the formed microdots are minls-yellow in hue when viewed against a yellow background and blue in hue when viewed against a neutral background.
Claim 13
Dependent Claim
74 words
A color-reversal copy restrictive medium comprising: a support layer; at least one image-forming layer supported by said support layer; and at least one of said at least one image-forming layers capable of forming a pattern of microdots of diminished optical density from a latent image of a pattern of microdots wherein the formed microdots are minls-yellow in hue when viewed against a yellow background and blue in hue when viewed against a neutral background.
Claim 14
Dependent Claim
25 words
The color-reversal copy restrictive medium according to claim 11 wherein said pattern of microdots is absent from areas of the document of minimal optical density.
Claim 15
Dependent Claim
20 words
The color-reversal copy restrictive medium according to claim 11 wherein said microdots have a spectral character of low visual perceptibility.
Claim 16
Dependent Claim
58 words
The color-reversal copy restrictive medium according to claim 11 wherein the equivalent circular diameter of the microdots is 300 microns or less with the edge of a microdot defined by the isodensity profile at which the yellow optical density is midway between the minimum density of the microdot and the density of the region adjacent to the microdot.
Claim 17
Dependent Claim
23 words
The color-reversal copy restrictive medium according to claim 11 wherein the spatial arrangement of the microdots is periodic with one or more periodicities.
Claim 18
Dependent Claim
23 words
The color-reversal copy restrictive medium according to claim 11 wherein the spatial arrangement of the microdots is aperiodic with one or more aperiodicities.
Claim 19
Dependent Claim
23 words
The color-reversal copy restrictive medium according to claim 11 wherein the spatial arrangement of the microdots is a combination of periodic and aperiodic.
Claim 20
Dependent Claim
16 words
A color-reversal copy restrictive medium according to claim 11 wherein said pattern of microdots is unique.
Claim 21
Dependent Claim
38 words
The color-reversal copy restrictive medium according to claim 11 wherein the microdots have an optical density, size, and spacing so as to not visually modify the lightness, color balance, or tone reproduction of the image in the document.
Claim 22
Dependent Claim
18 words
The color-reversal copy restrictive medium according to claim 11 wherein the microdots are minimally spaced 0.5 mm center-to-center.
Claim 23
Dependent Claim
20 words
The color-reversal copy restrictive photographic medium according to claim 11 wherein said support layer is a reflective paper support layer.
Claim 24
Dependent Claim
31 words
The color-reversal copy restrictive photographic medium according to claim 21 and further comprising a light reflective layer positioned between said reflective paper support layer and said at least one image-forming layer.
Claim 25
Dependent Claim
28 words
The color-reversal copy restrictive photographic medium according to claim 22 and further comprising a protective layer coated on said reflective paper support layer opposite said light reflective layer.
Claim 26
Dependent Claim
20 words
The color-reversal copy restrictive photographic medium according to claim 11 wherein said support layer is an optically clear film base.
Claim 27
Dependent Claim
30 words
The color-reversal copy restrictive photographic medium according to claim 24 and further comprising a pigmented layer positioned between said optically clear film base and said at least one image-forming layer.
Claim 28
Dependent Claim
19 words
The color-reversal copy restrictive photographic medium according to claim 11 wherein said support layer is a pigmented film base.
Claim 29
Dependent Claim
31 words
The color-reversal copy restrictive photographic medium according to claim 24 and further comprising a pigmented layer coated on said optically clear film base opposite said at least one image forming layer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-06-29 | 2001-12-29 | 2002-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-29 | 2005-12-29 | 2006-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-29 | 2009-12-29 | 2010-06-30 | $7700.00 | Window Closed / Lapsed |