US5538549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording ink having pigment particles
Assignee: Brother Industries Ltd
•
Filing: 1995-06-05
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Granted: 1996-07-23
•
Expires: 2015-06-05
Abstract
Abstract A recording ink including a pigment as a coloring agent, and a solvent which contains at least water. The pigment consists of particles that are dispersed in the solvent, and has an average particle size of 0.05-0.1 mu m. Substantially all of the particles of the pigment have particle sizes in a range of 0.01-0.3 mu m.
Inventors
- 👤 Masahito Kato
- 👤 Shunichi Higashiyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:36
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/322
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
52 words
A recording ink including a pigment as a coloring agent, and a solvent containing at least water, said pigment consisting of particles dispersed in said solvent and having an average particle size of 0.05-0.1 μm, substantially all of said particles of said pigment having particle sizes in a range of 0.01-0.3 μm.
Claim 2
Dependent Claim
52 words
A recording ink including a pigment as a coloring agent, and a solvent containing at least water, said pigment consisting of particles dispersed in said solvent and having an average particle size of 0.05-0.1 μm, substantially all of said particles of said pigment having particle sizes in a range of 0.01-0.3 μm.
Claim 3
Dependent Claim
24 words
A recording ink according to claim 1, wherein substantially all of said particles of said pigment have diameters in a range of 0.01-0.2 μm.
Claim 4
Dependent Claim
35 words
A recording ink according to claim 1, which is used in an ink jet device for jetting the ink from a nozzle formed through the device, so as to effect printing on a recording medium.
Claim 5
Dependent Claim
17 words
A recording ink according to claim 1, which has a viscosity of 1-50 centipoises at 25° C.
Claim 6
Dependent Claim
20 words
A recording ink according to claim 4, wherein said viscosity is in a range of 1-10 centipoises at 25° C.
Claim 7
Dependent Claim
20 words
A recording ink according to claim 5, wherein said viscosity is in a range of 2-3 centipoises at 25° C.
Claim 8
Dependent Claim
16 words
A recording ink according to claim 1, wherein said solvent further contains a low-volatile water-soluble solvent.
Claim 9
Dependent Claim
17 words
A recording ink according to claim 7, wherein said low-volatile water-soluble solvent is selected from polyhydric alcohols.
Claim 10
Dependent Claim
19 words
A recording ink according to claim 1, wherein said pigment is contained in an amount of 3-20% by weight.
Claim 11
Dependent Claim
16 words
A recording ink according to claim 1, further including 1-15% by weight of a dispersing agent.
Claim 12
Dependent Claim
15 words
A recording ink according to claim 1, further including 1-10% by weight of a resin.
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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) | 1999-07-23 | 2000-01-22 | 2000-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-07-23 | 2004-01-22 | 2004-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-07-23 | 2008-01-22 | 2008-07-23 | $7700.00 | Window Closed / Lapsed |