Patent US5837754A successfully refreshed from Google Patents.
US5837754A
Expired / Lapsed
US
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Ink for ink jet printer
Assignee: Toyobo Co Ltd
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Filing: 1996-10-03
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Granted: 1998-11-17
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Expires: 2016-10-03
Abstract
Abstract Ink for an ink-jet printer of the present invention includes polyester particles colored with a colorant which are dispersed in an aqueous medium.
Inventors
- 👤 Tetsuo Shimomura
- 👤 Satoshi Maeda
- 👤 Yozo Yamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:26
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/324; C09D11/326; Y; Y10; Y10S; Y10S260/00; Y10S260/38
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
124 words
Ink for an ink-jet printer comprising polyester particles colored with a colorant and dispersed in an aqueous medium, wherein: (a) the polyester particles are made of a polyester containing an ionic group on a main chain or a side chain of the polyester in the range of 20 to 1000 equivalents/10 6 g; (b) the polyester particles have an average particle size in the range of 0.1 to 1.0 μm; (c) the colorant is a dye which is insoluble in water at room temperature; (d) the content of the dye in the polyester particles is in the range of 2 to 20% by weight; and (e) the ink for the ink-jet printer has a surface tension in a range of 25 to 40 dyne/cm.
Claim 2
Dependent Claim
124 words
Ink for an ink-jet printer comprising polyester particles colored with a colorant and dispersed in an aqueous medium, wherein: (a) the polyester particles are made of a polyester containing an ionic group on a main chain or a side chain of the polyester in the range of 20 to 1000 equivalents/10 6 g; (b) the polyester particles have an average particle size in the range of 0.1 to 1.0 μm; (c) the colorant is a dye which is insoluble in water at room temperature; (d) the content of the dye in the polyester particles is in the range of 2 to 20% by weight; and (e) the ink for the ink-jet printer has a surface tension in a range of 25 to 40 dyne/cm.
Claim 3
Dependent Claim
30 words
Ink for an ink-jet printer according to claim 1, wherein the content of the colored polyester particles in the ink is in a range of 10 to 50% by weight.
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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) | 2001-11-16 | 2002-05-18 | 2002-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-11-16 | 2006-05-18 | 2006-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-11-16 | 2010-05-18 | 2010-11-17 | $7700.00 | Window Closed / Lapsed |