Patent US5188664A successfully refreshed from Google Patents.
US5188664A
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Anti-coalescent ink composition and method for making the same
Assignee: HP Inc
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Filing: 1991-11-26
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Granted: 1993-02-23
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Expires: 2011-11-26
Abstract
Abstract An improved ink composition having an additive therein for reducing the surface tension of the composition and increasing the drip mass per firing. Reduced surface tension and increased drop mass per firing enable the production of graphic images having enhanced clarity and contrast while avoiding problems such as bubble adhesion/longevity and ink mottling/coalescence. The additive basically consists of at least one polyether polyol. The additive is usable in a wide variety of ink compositions. In a preferred embodiment, ink compositions using the additive will include about 0.001-1.0% by weight additive (0.0075%=optimum). The resulting ink formulations are capable of printing high resolution graphic images while avoiding the problems described above.
Inventors
- 👤 Raymond J. Adamic
- 👤 Theresa A. Gibney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:55
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
85 words
A method for manufacturing a reduced surface tension ink composition having an increased drop mass per firing comprising the steps of: obtaining a supply of at least one chemical dye; and combining said chemical dye with at least one polyether polyol in order to produce said ink composition, said polyether polyol having physical characteristics sufficient to enable said ink composition to have a reduced surface tension and increased drop mass per firing compared with an ink composition produced in the absence of said polyether polyol.
Claim 2
Independent Claim
85 words
A method for manufacturing a reduced surface tension ink composition having an increased drop mass per firing comprising the steps of: obtaining a supply of at least one chemical dye; and combining said chemical dye with at least one polyether polyol in order to produce said ink composition, said polyether polyol having physical characteristics sufficient to enable said ink composition to have a reduced surface tension and increased drop mass per firing compared with an ink composition produced in the absence of said polyether polyol.
Claim 3
Dependent Claim
31 words
The method of claim 1 wherein said polyether polyol has an average molecular weight of about 3000, about 56 --OH groups, and a viscosity of about 225 cks at 100° F.
Claim 4
Dependent Claim
17 words
The method of claim 1 wherein said ink composition comprises about 0.001-1.0% by weight said polyether polyol.
Claim 5
Dependent Claim
17 words
The method of claim 1 wherein said ink composition comprises about 0.5-20.0% by weight said chemical dye.
Claim 6
Independent Claim
128 words
A method for manufacturing a reduced surface tension ink composition having an increased drop mass per firing comprising the steps of: obtaining a supply of at least one chemical dye; and combining said chemical dye with at least one polyether polyol in order to produce said ink composition, said composition comprising about 0.001-1.0% by weight said polyether polyol, and about 0.5-20.0% by weight said chemical dye, said polyether polyol having physical characteristics sufficient to enable said ink composition to have a reduced surface tension and increased drop mass per firing compared with an ink composition produced in the absence of said polyether polyol, said polyether polyol having an average molecular weight of about 3000, about 56 --OH groups, and a viscosity of about 225 cks at 100° F.
Claim 7
Independent Claim
128 words
A method for manufacturing a reduced surface tension ink composition having an increased drop mass per firing comprising the steps of: obtaining a supply of at least one chemical dye; and combining said chemical dye with at least one polyether polyol in order to produce said ink composition, said composition comprising about 0.001-1.0% by weight said polyether polyol, and about 0.5-20.0% by weight said chemical dye, said polyether polyol having physical characteristics sufficient to enable said ink composition to have a reduced surface tension and increased drop mass per firing compared with an ink composition produced in the absence of said polyether polyol, said polyether polyol having an average molecular weight of about 3000, about 56 --OH groups, and a viscosity of about 225 cks at 100° F.
Claim 8
Dependent Claim
76 words
An ink composition having a reduced surface tension and an increased drop mass per firing comprising: at least one chemical dye; and at least one polyether polyol combined with said chemical dye in order to produce said ink composition, said polyether polyol having physical characteristics sufficient to enable said ink composition to have a reduced surface tension and increased drop mass per firing compared with an ink composition produced in the absence of said polyether polyol.
Claim 9
Dependent Claim
76 words
An ink composition having a reduced surface tension and an increased drop mass per firing comprising: at least one chemical dye; and at least one polyether polyol combined with said chemical dye in order to produce said ink composition, said polyether polyol having physical characteristics sufficient to enable said ink composition to have a reduced surface tension and increased drop mass per firing compared with an ink composition produced in the absence of said polyether polyol.
Claim 10
Dependent Claim
31 words
The composition of claim 6 wherein said polyether polyol has an average molecular weight of about 3000, about 56 --OH groups, and a viscosity of about 225 cks at 100° F.
Claim 11
Dependent Claim
16 words
The composition of claim 6 wherein said composition comprises about 0.001-1.0% by weight said polyether polyol.
Claim 12
Dependent Claim
16 words
The composition of claim 6 wherein said composition comprises about 0.5-20.0% by weight said chemical dye.
Claim 13
Dependent Claim
118 words
An ink composition having a reduced surface tension and an increased drop mass per firing comprising: at least one chemical dye; and at least one polyether polyol combined with said chemical dye in order to form said composition, said composition comprising about 0.001-1.0% by weight said polyether polyol and about 0.5-20.0% by weight said chemical dye, said polyether polyol having physical characteristics sufficient to enable said ink composition to have a reduced surface tension and increased drop mass per firing compared with an ink composition produced in the absence of said polyether polyol, said polyether polyol having an average molecular weight of about 3000, about 56 --OH groups, and a viscosity of about 225 cks at 100° F.
Claim 14
Dependent Claim
118 words
An ink composition having a reduced surface tension and an increased drop mass per firing comprising: at least one chemical dye; and at least one polyether polyol combined with said chemical dye in order to form said composition, said composition comprising about 0.001-1.0% by weight said polyether polyol and about 0.5-20.0% by weight said chemical dye, said polyether polyol having physical characteristics sufficient to enable said ink composition to have a reduced surface tension and increased drop mass per firing compared with an ink composition produced in the absence of said polyether polyol, said polyether polyol having an average molecular weight of about 3000, about 56 --OH groups, and a viscosity of about 225 cks at 100° F.
Claim 15
Independent Claim
134 words
A method for printing a stable image onto a substrate comprising the steps of: providing an ink composition having a reduced surface tension and an increased drop mass per firing, said ink composition comprising at least one chemical dye and at least one polyether polyol combined with said chemical dye, said polyether polyol having physical characteristics sufficient to enable said ink composition to have a reduced surface tension and increased drop mass per firing compared with an ink composition produced in the absence of said polyether polyol; providing a printing apparatus; supplying said printing apparatus with said ink composition; activating said printing apparatus in order to cause said apparatus to apply said ink composition onto said substrate; and allowing said ink composition on said substrate to dry in order to produce said image thereon.
Claim 16
Independent Claim
134 words
A method for printing a stable image onto a substrate comprising the steps of: providing an ink composition having a reduced surface tension and an increased drop mass per firing, said ink composition comprising at least one chemical dye and at least one polyether polyol combined with said chemical dye, said polyether polyol having physical characteristics sufficient to enable said ink composition to have a reduced surface tension and increased drop mass per firing compared with an ink composition produced in the absence of said polyether polyol; providing a printing apparatus; supplying said printing apparatus with said ink composition; activating said printing apparatus in order to cause said apparatus to apply said ink composition onto said substrate; and allowing said ink composition on said substrate to dry in order to produce said image thereon.
Claim 17
Dependent Claim
31 words
The method of claim 11 wherein said polyether polyol has an average molecular weight of about 3000, about 56 --OH groups, and a viscosity of about 225 cks at 100° F.
Claim 18
Dependent Claim
15 words
The method of claim 11 wherein said printing apparatus comprises a thermal inkjet printing system.
Claim 19
Dependent Claim
16 words
The method of claim 11 wherein said composition comprises about 0.001-1.0% by weight said polyether polyol.
Claim 20
Dependent Claim
17 words
The method of claim 11 wherein said ink composition comprises about 0.5-20.0% by weight said chemical dye.
Claim 21
Independent Claim
164 words
A method for printing a stable image onto a substrate comprising the steps of: providing an ink composition having a reduced surface tension and an increased drop mass per firing, said ink composition comprising about 0.5-20.0% by weight of at least one chemical dye and about 0.001-1.0% by weight of at least one polyether polyol, said polyether polyol having physical characteristics sufficient to enable said ink composition to have a reduced surface tension and increased drop mass per firing compared with an ink composition produced in the absence of said polyether polyol, said polyether polyol having an average molecular weight of about 3000, about 56 --OH groups, and a viscosity of about 225 cks at 100° F.; providing a printing apparatus; supplying said printing apparatus with said ink composition; activating said printing apparatus in order to cause said apparatus to apply said ink composition onto said substrate; and allowing said ink composition on said substrate to dry in order to produce said image thereon.
Claim 22
Independent Claim
164 words
A method for printing a stable image onto a substrate comprising the steps of: providing an ink composition having a reduced surface tension and an increased drop mass per firing, said ink composition comprising about 0.5-20.0% by weight of at least one chemical dye and about 0.001-1.0% by weight of at least one polyether polyol, said polyether polyol having physical characteristics sufficient to enable said ink composition to have a reduced surface tension and increased drop mass per firing compared with an ink composition produced in the absence of said polyether polyol, said polyether polyol having an average molecular weight of about 3000, about 56 --OH groups, and a viscosity of about 225 cks at 100° F.; providing a printing apparatus; supplying said printing apparatus with said ink composition; activating said printing apparatus in order to cause said apparatus to apply said ink composition onto said substrate; and allowing said ink composition on said substrate to dry in order to produce said image thereon.
Claim 23
Dependent Claim
15 words
The method of claim 16 wherein said printing apparatus comprises a thermal inkjet printing system.
References Cited (Backward Citations)
US4409040A
Cited
US4500895A
Cited
US4513298A
Cited
US4822417A
Cited
US4923515A
Cited
US4685968A
Cited
US5049188A
Cited
US4794409A
Cited
US5059246A
Cited
US4963189A
Cited
US5082496A
Cited
US5141558A
Cited
US5100469A
Cited
US5100469B1
Cited
US5141556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-02-23 | 1996-08-24 | 1997-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-23 | 2000-08-24 | 2001-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-23 | 2004-08-24 | 2005-02-23 | $7700.00 | Window Closed / Lapsed |