Patent US5485792A successfully refreshed from Google Patents.
US5485792A
Expired / Lapsed
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Latent image development system
Assignee: GOLDEN BOOKS PUBLISHING COMPANY Inc
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Filing: 1995-07-07
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Granted: 1996-01-23
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Expires: 2015-07-07
Abstract
Abstract A latent image development system for producing a multicolor image on a substrate, includes in combination a substrate and dispenser. The substrate has a colorless or faintly colored latent multicolor image thereon, the latent image being formed by a plurality of different color former compositions, each including a Lewis base color former. The dispenser is adapted to development of the latent multicolor image on the substrate by marking thereover and reacting with a single color developer composition, the color developer composition being free of inorganic metallic salts and including a Lewis acid color developer operative for each of the color former compositions.
Inventors
- 👤 Patrick J. Keyser
- 👤 W. James Bousman
- 👤 Robert W. Biemeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:14
CPC Classifications
B; B41; B41M; B41M1/00; B41M1/26; B41M1/36; B41M3/00; B41M3/001
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
100 words
A latent image development system for producing a multicolor image on a substrate, comprising in combination: (A) a substrate having a colorless or faintly colored latent multicolor image thereon, said latent image being formed by a plurality of different color former compositions, each including a Lewis base color former; and (B) a dispenser adapted to development of said latent multicolor image on said substrate by marking thereover and reacting with a single color developer composition, said color developer composition being free of inorganic metallic salts and including a Lewis acid color developer operative for each of said color former compositions.
Claim 2
Dependent Claim
100 words
A latent image development system for producing a multicolor image on a substrate, comprising in combination: (A) a substrate having a colorless or faintly colored latent multicolor image thereon, said latent image being formed by a plurality of different color former compositions, each including a Lewis base color former; and (B) a dispenser adapted to development of said latent multicolor image on said substrate by marking thereover and reacting with a single color developer composition, said color developer composition being free of inorganic metallic salts and including a Lewis acid color developer operative for each of said color former compositions.
Claim 3
Dependent Claim
16 words
The system of claim 1 wherein said substrate is paper printed with said color former compositions.
Claim 4
Dependent Claim
40 words
The system of claim 1 wherein said substrate is printed with both said color former compositions and a visible color image which will cooperate with the latent multicolor image later developed by said dispenser to form a visible multicolor image.
Claim 5
Dependent Claim
29 words
The system of claim 1 wherein said color former changes hybridization from sp 3 to sp 2 in going from a colorless non-planar geometry to a colored planar geometry.
Claim 6
Dependent Claim
31 words
The system of claim 1 wherein said color former is selected from the group consisting of crystal violet lactone, Michler's hydrol, fluoran, leuco and auramine compounds, bis-indolylphthalide compounds and combinations thereof.
Claim 7
Dependent Claim
12 words
The system of claim 1 wherein said dispenser is in solid form.
Claim 8
Dependent Claim
17 words
The system of claim 1 wherein said dispenser is a felt tip pen or a liquid paint.
Claim 9
Dependent Claim
25 words
The system of claim 7 wherein said dispenser contains a plurality of different types of wax compositions and a solvent for said color developer composition.
Claim 10
Dependent Claim
17 words
The system of claim 8 wherein said color developer is a zinc salt of a phenolic compound.
Claim 11
Dependent Claim
15 words
The system of claim 9 wherein said color developer is a phenolic hydroxy group-containing compound.
Claim 12
Dependent Claim
16 words
The system of claim 10 wherein said color developer is a zinc modified phenolic resin compound.
Claim 13
Dependent Claim
98 words
A latent image development system for producing a multicolor image on a substrate, comprising: a substrate having a colorless or faintly colored latent multicolor image thereon, said latent image being formed by a plurality of different color former compositions, each including a Lewis base color former, and said latent image being adapted to development of said latent multicolor image on said substrate by marking thereover and reacting with a single color developer composition, the color developer composition being free of inorganic metallic salts and including a Lewis acid color developer operative for each of said color former compositions.
Claim 14
Dependent Claim
98 words
A latent image development system for producing a multicolor image on a substrate, comprising: a substrate having a colorless or faintly colored latent multicolor image thereon, said latent image being formed by a plurality of different color former compositions, each including a Lewis base color former, and said latent image being adapted to development of said latent multicolor image on said substrate by marking thereover and reacting with a single color developer composition, the color developer composition being free of inorganic metallic salts and including a Lewis acid color developer operative for each of said color former compositions.
Claim 15
Dependent Claim
16 words
The system of claim 12 wherein said substrate is paper printed with said color former compositions.
Claim 16
Dependent Claim
37 words
The system of claim 12 wherein said substrate is printed with both said color former compositions and a visible color image which will cooperate with the latent multicolor image later developed to form a visible multicolor image.
Claim 17
Dependent Claim
29 words
The system of claim 12 wherein said color former changes hybridization from sp 3 to sp 2 in going from a colorless non-planar geometry to a colored planar geometry.
Claim 18
Dependent Claim
31 words
The system of claim 12 wherein said color former is selected from the group consisting of crystal violet lactone, Michler's hydrol, fluoran, leuco and auramine compounds, bis-indolylphthalide compounds and combinations thereof.
Claim 19
Dependent Claim
91 words
A latent image development system for producing a multicolor image on a substrate having a colorless or faintly colored latent multicolor image thereon, the latent image being formed by a plurality of different color former compositions, each including a Lewis base color former, comprising: a dispenser adapted to development of a latent multicolor image on a substrate by marking thereover and reacting with a single color developer composition, said color developer composition being free of inorganic metallic salts and including a Lewis acid color developer operative for each color former composition.
Claim 20
Dependent Claim
91 words
A latent image development system for producing a multicolor image on a substrate having a colorless or faintly colored latent multicolor image thereon, the latent image being formed by a plurality of different color former compositions, each including a Lewis base color former, comprising: a dispenser adapted to development of a latent multicolor image on a substrate by marking thereover and reacting with a single color developer composition, said color developer composition being free of inorganic metallic salts and including a Lewis acid color developer operative for each color former composition.
Claim 21
Dependent Claim
12 words
The system of claim 17 wherein said dispenser is in solid form.
Claim 22
Dependent Claim
17 words
The system of claim 17 wherein said dispenser is a felt tip pen or a liquid paint.
Claim 23
Dependent Claim
25 words
The system of claim 18 wherein said dispenser contains a plurality of different types of wax compositions and a solvent for said color developer composition.
Claim 24
Dependent Claim
17 words
The system of claim 20 wherein said color developer is a zinc salt of a phenolic compound.
Claim 25
Dependent Claim
15 words
The system of claim 21 wherein said color developer is a phenolic hydroxy group-containing compound.
Claim 26
Dependent Claim
16 words
The system of claim 22 wherein said color developer is a zinc modified phenolic resin compound.
Claim 27
Dependent Claim
137 words
A latent image development system for producing a multicolor image on a substrate, comprising in combination: (A) a paper substrate having a colorless or faintly colored latent multicolor image printed thereon, said latent image being formed by a plurality of different color former compositions, each including a Lewis base color former; and (B) a dispenser in solid form adapted to development of said latent multicolor image on said substrate by marking thereover and reacting with a single color developer composition, said color developer composition being free of inorganic metallic salts and including a Lewis acid color developer operative for each of said color former compositions, said dispenser containing a plurality of different types of wax compositions and a solvent for said color developer composition, said color developer being a zinc salt of a phenolic hydroxy group-containing compound.
Claim 28
Dependent Claim
137 words
A latent image development system for producing a multicolor image on a substrate, comprising in combination: (A) a paper substrate having a colorless or faintly colored latent multicolor image printed thereon, said latent image being formed by a plurality of different color former compositions, each including a Lewis base color former; and (B) a dispenser in solid form adapted to development of said latent multicolor image on said substrate by marking thereover and reacting with a single color developer composition, said color developer composition being free of inorganic metallic salts and including a Lewis acid color developer operative for each of said color former compositions, said dispenser containing a plurality of different types of wax compositions and a solvent for said color developer composition, said color developer being a zinc salt of a phenolic hydroxy group-containing compound.
Claim 29
Dependent Claim
40 words
The system of claim 24 wherein said substrate is printed with both said color former compositions and a visible color image which will cooperate with the latent multicolor image later developed by said dispenser to form a visible multicolor image.
Claim 30
Dependent Claim
29 words
The system of claim 24 wherein said color former changes hybridization from sp 3 to sp 2 in going from a colorless non-planar geometry to a colored planar geometry.
Claim 31
Dependent Claim
31 words
The system of claim 24 wherein said color former is selected from the group consisting of crystal violet lactone, Michler's hydrol, fluoran, leuco and auramine compounds, bis-indolylphthalide compounds and combinations thereof.
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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) | 1999-01-22 | 1999-07-24 | 2000-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-22 | 2003-07-24 | 2004-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-22 | 2007-07-24 | 2008-01-23 | $7700.00 | Window Closed / Lapsed |