US4115602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reprinting on a print removable paper product
Assignee: Individual
•
Filing: 1977-02-28
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Granted: 1978-09-19
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Expires: 1997-02-28
Abstract
Abstract A print removable and thus reusable or reprintable paper product is described. Complete erasability by means of rubbing with an abrasive containing rubber eraser is achieved by providing a dried, ink printable coating of a selected water soluble thermoplastic resin, particularly a selected cellulose ether, on the surface of the paper to be printed such that the ink does not bleed through to the paper fibers. A computer card is described wherein machine readable indicia are initially printed on the coating which can then be erased after use by rubbing with an abrasive containing rubber eraser, recoated, reprinted and then reused.
Inventors
- 👤 Wade A. Bullard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:25
CPC Classifications
B; B43; B43L; B43L1/00; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41M5/5236; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24901; Y10T428/24934
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
128 words
A method for reprinting on reusable paper which is precut to precise dimensions which comprises: (a) providing a reusable paper surface a portion of which is coated with an ink printable water soluble thermoplastic reaction product of alkylene oxides containing 1 to 6 carbon atoms with cellulose which is dried sufficiently to be tack free such that the coated portion of the paper surface becomes non-porous; (b) printing with an ink on the coated portion without penetration of the ink to fibers forming the paper such that the ink is completely removable by rubbing with an abrasive containing rubber eraser; and (c) removing the ink on the coating and a portion of the coating in order to render the surface recoatable with the thermoplastic resin and then reprintable.
Claim 2
Independent Claim
128 words
A method for reprinting on reusable paper which is precut to precise dimensions which comprises: (a) providing a reusable paper surface a portion of which is coated with an ink printable water soluble thermoplastic reaction product of alkylene oxides containing 1 to 6 carbon atoms with cellulose which is dried sufficiently to be tack free such that the coated portion of the paper surface becomes non-porous; (b) printing with an ink on the coated portion without penetration of the ink to fibers forming the paper such that the ink is completely removable by rubbing with an abrasive containing rubber eraser; and (c) removing the ink on the coating and a portion of the coating in order to render the surface recoatable with the thermoplastic resin and then reprintable.
Claim 3
Dependent Claim
12 words
The method of claim 1 wherein the reaction product is hydroxypropyl cellulose.
Claim 4
Dependent Claim
24 words
The method of claim 1 wherein the paper is porous and the thermoplastic reaction product impregnates into the paper as well as coating it.
Claim 5
Dependent Claim
31 words
The method of claim 1 wherein the ink is a magnetic ink and wherein the magnetic ink is completely removed from the paper along with a portion of the reaction product.
Claim 6
Dependent Claim
16 words
The method of claim 1 wherein the ink and reaction product are removed with an abrasive.
Claim 7
Dependent Claim
20 words
The method of claim 1 wherein the ink and reaction product are removed with a solvent by wetting and rubbing.
Claim 8
Dependent Claim
45 words
The method of claim 1 wherein the reusable paper is in the form of a computer card which is repeatedly coated with the reaction product, printed with the ink to form indicia, used and then the ink and a portion of the reaction product removed.
Claim 9
Dependent Claim
22 words
The method of claim 1 wherein the reaction product is hydroxypropyl cellulose which is coated on the paper surface by heat sealing.
Claim 10
Dependent Claim
26 words
The method of claim 1 wherein the reaction product is hydroxypropyl cellulose which is coated on the paper surface in water or a polar organic solvent.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |