US Patent No: 7,172,992
Number of patents in Portfolio can not be more than 2000
Biguanide bleaching agent for a thermal-imaging receptor element
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Feb 6, 2007
Issued date -
Sep 24, 2004
filing date -
10/949,899
serial no -
In Force
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Abstract
The present invention provides a receptor element for use in thermal transfer imaging. The receptor element includes a coating having a polymeric binder and a biguanide bleaching agent. The biguanide bleaching agent is capable of bleaching an infrared-absorbing dye when the biguanide bleaching agent and the infrared-absorbing dye are in contact. A particularly suitable biguanide bleaching agent is 1-(o-tolyl)biguanide. The invention also provides compositions and methods for manufacturing a receptor element. Also provided by the invention is an imaging system for thermal transfer imaging. The imaging system includes a color-bearing element and a bleaching element, wherein the bleaching element includes a coating having a polymeric binder and a biguanide bleaching agent. The invention further provides methods useful in the production of integral proofs.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 5,935,758 Laser induced film transfer system | 37 | 1997 | |
| 6,171,766 Laser absorbable photobleachable compositions | 14 | 1999 | |
| 6,291,143 Laser absorbable photobleachable compositions | 17 | 2000 | |
| 6,899,988 Laser thermal metallic donors | 5 | 2003 | |
| 6,855,474 Laser thermal color donors with improved aging characteristics | 4 | 2004 | |
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| 5,126,760 Direct digital halftone color proofing involving diode laser imaging | 54 | 1990 | |
| 5,017,547 Use of vacuum for improved density in laser-induced thermal dye transfer | 28 | 1990 | |
| 5,219,703 Laser-induced thermal dye transfer with bleachable near-infrared absorbing sensitizers | 81 | 1992 | |
| 5,380,644 Additive for the reduction of mottle in photothermographic and thermographic elements | 40 | 1993 | |
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| 5,843,617 Thermal bleaching of infrared dyes | 19 | 1997 | |
| 5,945,249 Laser absorbable photobleachable compositions | 21 | 1997 | |
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| 5,171,650 Ablation-transfer imaging/recording | 210 | 1991 | |
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| 4,876,235 Dye-receiving element containing spacer beads in a laser-induced thermal dye transfer | 45 | 1988 | |
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| 4,891,423 Polymeric biguanides | 13 | 1989 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Aug 6, 2014 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Aug 6, 2018 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |