Patent US5024898A successfully refreshed from Google Patents.
US5024898A
Expired / Lapsed
US
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Erasably markable articles and methods of making such articles
Assignee: Dennison Manufacturing Co
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Filing: 1990-02-06
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Granted: 1991-06-18
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Expires: 2010-02-06
Abstract
Abstract An erasably markable luminescent article formed of a coated substrate that is markable with dry wipe inks without causing permanent discernible distortion of the substrate. The surface after marking is substantially fully erasable. The surface is provided by a smooth coating of cured lacquer perferably a radiation cured lacquer, for example, electron beam radiation cured urethane acrylate. The luminescent appearance results from a phosphorescent layer between the substrate and an unpigmented cured lacquer coating.
Inventors
- 👤 Warren R. Pitts
- 👤 Hayden F. Estrada
- 👤 Peter West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:41
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/30; D21H25/00; D21H25/04; D21H25/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
64 words
An erasably markable luminescent article comprising a substrate having at least two surfaces, wherein at least one surface of the substrate is markable with dry wipe inks, said surface after marking being substantially fully erasable, and said markable surface being provided by a smooth coating of cured lacquer, and said luminescent appearance resulting from a phosphorescent material which is embedded within the cured lacquer.
Claim 2
Dependent Claim
64 words
An erasably markable luminescent article comprising a substrate having at least two surfaces, wherein at least one surface of the substrate is markable with dry wipe inks, said surface after marking being substantially fully erasable, and said markable surface being provided by a smooth coating of cured lacquer, and said luminescent appearance resulting from a phosphorescent material which is embedded within the cured lacquer.
Claim 3
Dependent Claim
12 words
The article of claim 1, wherein the substrate is paper or cardboard.
Claim 4
Dependent Claim
11 words
The article of claim 1, wherein the substrate is plastic film.
Claim 5
Dependent Claim
14 words
The article of claim 1, wherein the cured lacquer comprises a radiation cured lacquer.
Claim 6
Dependent Claim
13 words
The article of claim 4, wherein the radiation cured lacquer comprises urethane acrylate.
Claim 7
Dependent Claim
23 words
The article of claim 1, wherein the phosphorescent material is selected from the group consisting of sulfides of zinc, strontium, cadmium, and calcium.
Claim 8
Dependent Claim
67 words
An erasably markable luminescent article comprising a substrate having at least two surfaces, wherein at least one surface of the substrate is markable with dry wipe inks, said surface after marking being substantially fully erasable, and said markable surface being provided by a smooth coating of cured lacquer, and said luminescent appearance resulting from a phosphorescent layer between said substrate and said smooth coating of cured lacquer.
Claim 9
Dependent Claim
67 words
An erasably markable luminescent article comprising a substrate having at least two surfaces, wherein at least one surface of the substrate is markable with dry wipe inks, said surface after marking being substantially fully erasable, and said markable surface being provided by a smooth coating of cured lacquer, and said luminescent appearance resulting from a phosphorescent layer between said substrate and said smooth coating of cured lacquer.
Claim 10
Dependent Claim
12 words
The article of claim 7, wherein the substrate is paper or cardboard.
Claim 11
Dependent Claim
11 words
The article of claim 7, wherein the substrate is plastic film.
Claim 12
Dependent Claim
14 words
The article of claim 7, wherein the cured lacquer comprises a radiation cured lacquer.
Claim 13
Dependent Claim
13 words
The article of claim 10 wherein the radiation cured lacquer comprises urethane acrylate.
Claim 14
Dependent Claim
23 words
The article of claim 7, wherein the phosphorescent material is selected from the group consisting of sulfides of zinc, strontium, cadmium, and calcium.
Claim 15
Independent Claim
125 words
A method for producing an erasably markable, luminescent article comprising a substrate having at least two surfaces wherein at least one surface of the substrate is markable with dry wipe inks without permanent discernible distortion of the substrate, the method comprising: a. forming over at least one surface of the substrate a layer of phosphorescent material; b. forming over said layer of phosphorescent material a continuous layer of curable lacquer; and c. exposing the article to an energy source to cure the lacquer, resulting in a smooth coating of cured lacquer forming said markable surface wherein said markable surface has the property that it prevents permanent discernible distortion of the substrate after marking with dry wipe ink and is substantially fully erasable after said marking.
Claim 16
Independent Claim
125 words
A method for producing an erasably markable, luminescent article comprising a substrate having at least two surfaces wherein at least one surface of the substrate is markable with dry wipe inks without permanent discernible distortion of the substrate, the method comprising: a. forming over at least one surface of the substrate a layer of phosphorescent material; b. forming over said layer of phosphorescent material a continuous layer of curable lacquer; and c. exposing the article to an energy source to cure the lacquer, resulting in a smooth coating of cured lacquer forming said markable surface wherein said markable surface has the property that it prevents permanent discernible distortion of the substrate after marking with dry wipe ink and is substantially fully erasable after said marking.
Claim 17
Dependent Claim
16 words
A method in accordance with claim 13, wherein the lacquer is cured by exposing to heat.
Claim 18
Dependent Claim
20 words
A method in accordance with claim 13, wherein the lacquer is cured by exposing to electron beam and/or ultraviolet radiation.
Claim 19
Dependent Claim
15 words
A method in accordance with claim 13, wherein the layer of phosphorescent material is continuous.
Claim 20
Dependent Claim
18 words
A method in accordance with claim 13, wherein prior to step (a), the one surface is corona treated.
Claim 21
Independent Claim
116 words
A method for producing an erasably markable, luminescent article comprising a substrate having at least two surfaces wherein at least one surface of the substrate is markable with dry wipe inks without permanent discernible distortion of the substrate, the method comprising: a. forming over at least one surface of the substrate a continuous layer of curable lacquer containing a phosphorescent material; and b. exposing the article to an energy source to cure the lacquer, resulting in a smooth coating of cured lacquer forming said markable surface wherein said markable surface has the property that it prevents permanent discernible distortion of the substrate after marking with dry wipe ink and is substantially fully erasable after said marking.
Claim 22
Independent Claim
116 words
A method for producing an erasably markable, luminescent article comprising a substrate having at least two surfaces wherein at least one surface of the substrate is markable with dry wipe inks without permanent discernible distortion of the substrate, the method comprising: a. forming over at least one surface of the substrate a continuous layer of curable lacquer containing a phosphorescent material; and b. exposing the article to an energy source to cure the lacquer, resulting in a smooth coating of cured lacquer forming said markable surface wherein said markable surface has the property that it prevents permanent discernible distortion of the substrate after marking with dry wipe ink and is substantially fully erasable after said marking.
References Cited (Backward Citations)
US4393103A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-06-17 | 1994-12-17 | 1995-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-17 | 1998-12-17 | 1999-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-17 | 2002-12-17 | 2003-06-18 | $7700.00 | Window Closed / Lapsed |