US5065167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vaporizable solid ink composition for thermal ink-jet printing
Assignee: HP Inc
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Filing: 1990-05-21
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Granted: 1991-11-12
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Expires: 2010-05-21
Abstract
Abstract An ink jet ink including a waxy carrier that is solid at 25° C. and liquid at the operating temperature of an ink jet nozzle and a driver having a critical pressure greater than 10 atmospheres, the carrier and driver being miscible in liquid phase.
Inventors
- 👤 Young S. You
- 👤 John D. Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:07
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/34
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
148 words
A process for applying ink comprising: providing an ink composition that is solid at 25° C. and liquid at the operating temperature of a ink jet, said ink composition having at least one component with a critical pressure of at least 10 atm. and a low enough boiling temperature to form vapor bubbles in an ink jet print head; passing said ink composition to an inlet of an ink jet printhead; and superheating at least a portion of said ink composition within said ink jet printhead with multiple heating pulses, an initial pulse preheating at least a portion of said ink composition at a temperature below its boiling temperature and a subsequent pulse heating at least a portion of said ink composition from a temperature lower than its boiling temperature to a temperature higher than its boiling temperature, the superheating forming vapor bubbles within the ink jet printhead.
Claim 2
Dependent Claim
148 words
A process for applying ink comprising: providing an ink composition that is solid at 25° C. and liquid at the operating temperature of a ink jet, said ink composition having at least one component with a critical pressure of at least 10 atm. and a low enough boiling temperature to form vapor bubbles in an ink jet print head; passing said ink composition to an inlet of an ink jet printhead; and superheating at least a portion of said ink composition within said ink jet printhead with multiple heating pulses, an initial pulse preheating at least a portion of said ink composition at a temperature below its boiling temperature and a subsequent pulse heating at least a portion of said ink composition from a temperature lower than its boiling temperature to a temperature higher than its boiling temperature, the superheating forming vapor bubbles within the ink jet printhead.
Claim 3
Dependent Claim
19 words
The process as in claim 1 further comprising: ejecting a substantially liquid ink jet from the ink jet printhead.
Claim 4
Dependent Claim
15 words
The process as in claim 1 wherein the superheating includes applying an electric energy pulse.
Claim 5
Dependent Claim
17 words
The process as in claim 1 wherein the subsequent pulse has a maximum duration of 10 μsec.
Claim 6
Dependent Claim
33 words
The process as in claim 1 wherein the at least one component includes a fatty acid selected from the group consisting of stearic acid, palmitic acid, myristic acid, behenic acid, and tridecanoic acid.
Claim 7
Dependent Claim
27 words
The process as in claim 1 wherein the at least one component includes a long chain alcohol selected from the group consisting of octadecanol, hexadecanol, and tetradecanol.
Claim 8
Dependent Claim
27 words
The process as in claim 1 wherein the at least one component includes a fatty acid ester selected from the group consisting of monoethylstearate, diethylstearate, and monoethylpalmitate.
References Cited (Backward Citations)
US4723129A
Cited
US4490731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-11-11 | 1995-05-13 | 1995-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-11 | 1999-05-13 | 1999-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-11 | 2003-05-13 | 2003-11-12 | $7700.00 | Window Closed / Lapsed |