Patent US5290346A successfully refreshed from Google Patents.
US5290346A
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Ink for printer
Assignee: Brother Industries Ltd
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Filing: 1992-07-31
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Granted: 1994-03-01
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Expires: 2012-07-31
Abstract
Abstract An ink for an ink jet printer capable of decoloring a recorded image or changing a color of the recorded image to thereby save resources, improve economy, and improve functionality. As a coloring composition of the ink, an organoboron salt of cyanine dye and an ammonium salt of organoboron are employed in combination. After printing, the recorded image is decolored by irradiating near infrared light emissions onto a recording surface of a recording paper. As a result, the recording paper can be reused.
Inventors
- 👤 Masaya Fujioka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:40
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/328; B; B41; B41M; B41M3/00; B41M7/00; B41M7/0009
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
50 words
An ink for a printer, comprising: a coloring composition comprising an organoboron salt of a cationic dye and an ammonium salt of organoboron that is capable of being one of decolored and changed in concentration of color by addition of external energy; and a vehicle for retaining the coloring composition.
Claim 2
Dependent Claim
50 words
An ink for a printer, comprising: a coloring composition comprising an organoboron salt of a cationic dye and an ammonium salt of organoboron that is capable of being one of decolored and changed in concentration of color by addition of external energy; and a vehicle for retaining the coloring composition.
Claim 3
Dependent Claim
35 words
The ink as defined in claim 1, wherein the vehicle is a solid at ordinary temperatures and becomes a liquid when the solid is heated to a temperature not lower than a melting point thereof.
Claim 4
Dependent Claim
16 words
The ink as defined in claim 1, wherein the vehicle is a liquid at ordinary temperatures.
Claim 5
Dependent Claim
30 words
The ink as defined in claim 1, wherein the external energy is light energy and the organoboron salt of the cationic dye is an organoboron salt of a cyanine dye.
Claim 6
Dependent Claim
30 words
The ink as defined in claim 2, wherein the external energy is light energy and the organoboron salt of the cationic dye is an organoboron salt of a cyanine dye.
Claim 7
Dependent Claim
30 words
The ink as defined in claim 3, wherein the external energy is light energy and the organoboron salt of the cationic dye is an organoboron salt of a cyanine dye.
Claim 8
Dependent Claim
28 words
The ink as defined in claim 4, wherein a molar ratio of the organoboron salt of cyanine dye and the ammonium salt of organoboron is set to 1:2.
Claim 9
Dependent Claim
22 words
The ink as defined in claim 2, wherein the vehicle is a wax having a melting point of 50° C. or higher.
Claim 10
Dependent Claim
12 words
The ink as defined in claim 8, wherein the wax is stearone.
Claim 11
Dependent Claim
17 words
The ink as defined in claim 4, wherein the ammonium salt of organoboron is tetrabutylammonium butyltriphenyl borate.
Claim 12
Dependent Claim
16 words
The ink as defined in claim 4, wherein the light energy is a near infrared emission.
Claim 13
Dependent Claim
14 words
The ink as defined in claim 3, wherein the vehicle is an aromatic solvent.
Claim 14
Dependent Claim
21 words
The ink as defined in claim 12, wherein the aromatic solvent is selected from a group consisting of toluene and xylene.
Claim 15
Dependent Claim
16 words
The ink as defined in claim 4, further comprising one of a dye and a pigment.
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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) | 1997-02-28 | 1997-08-30 | 1998-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-28 | 2001-08-30 | 2002-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-28 | 2005-08-30 | 2006-03-01 | $7700.00 | Window Closed / Lapsed |