EP0097823A2
Expired / Lapsed
EP
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Ink jet recording system
Assignee: International Business Machines Corp
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Filing: 1983-05-27
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Granted: —
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Expires: 2003-05-27
Abstract
Abstract An apparatus for liquid jet recording systems is described for providing drop-on-demand ink from a reservoir wherein the ink contained in the reservoir is a wax-based hot-melt ink which undergoes a liquid-solid phase transition. The apparatus includes an ink reservoir (10), a nozzle (12), and a piezoelectric transducer (14) connected to a source of electrical pulses to provide exitation to cause droplets of ink to be moved from the reservoir and out through the nozzle. A unique meltable wax-based ink (95 percent paraffin wax and 5 percent carnauba wax) capable of undergoing a liquid-to-solid phase transition is contained in the reservoir (10) which includes heaters (16) which are employed to impart thermal energy to the ink to carry out the phase change.
Inventors
- 👤 Ari Aviram
- 👤 Ferdinand Hendriks
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 18:38
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/175; B41J2/17593; B41J2/135; B41J2/14; B41J2/14201; B41J2/1429
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
106 words
Ink jet recording system comprising a reservoir (10) for holding a supply of ink, a nozzle (12) mounted in said reservoir for permitting ink to exit from said reservoir, an actuating element (14) connected to said nozzle and to a source of electrical excitation signals for causing droplets of ink to be expelled from said reservoir through said nozzle, a quantity of ink disposed in said reservoir, said ink being composed ir part of a meltable wax-base which undergoes a liquid to solid phase transition, and heating means (16) associated with said reservoir to melt said ink into said liquid phase for explusion from said nozzle.
Claim 2
Dependent Claim
106 words
Ink jet recording system comprising a reservoir (10) for holding a supply of ink, a nozzle (12) mounted in said reservoir for permitting ink to exit from said reservoir, an actuating element (14) connected to said nozzle and to a source of electrical excitation signals for causing droplets of ink to be expelled from said reservoir through said nozzle, a quantity of ink disposed in said reservoir, said ink being composed ir part of a meltable wax-base which undergoes a liquid to solid phase transition, and heating means (16) associated with said reservoir to melt said ink into said liquid phase for explusion from said nozzle.
Claim 3
Dependent Claim
45 words
Ink jet recording system as claimed in claim 1, further comprising a recording member in the path of said ink droplets expelled from said nozzle, said ink droplets being disposed on the surface of said recording member and undergoing said liquid to solid phase transition.
Claim 4
Dependent Claim
45 words
Ink jet recording system as claimed in claim 1 or 2, wherein said actuating element (14) is a piezoelectric transducer connected to a source of electrical pulses to provide excitation to cause droplets of ink to be moved from said reservoir out through said nozzle.
Claim 5
Dependent Claim
39 words
Ink jet recording system as claimed in claim 1, 2 or 3, wherein said heating means (16) is an electrical thin film heater including a laminated heat generating layer and conductive electrodes disposed on said reservoir and said nozzle.
Claim 6
Dependent Claim
28 words
Ink jet recording system as claimed in claim 1, 2, 3 or 4, wherein said ink is composed of approximately 95 percent paraffin and 5 percent carnauba wax.
Claim 7
Independent Claim
65 words
A method of recording data comprising storing in a reservoir an ink having a meltable wax-base which undergoes a thermally reversible liquid to solid phase transition, effecting a solid to liquid or a liquid to lower viscosity liquid transition of the ink in the reservoir by heating the ink, and ejecting a drop of the heated liquid ink from a nozzle connected to the reservoir.
Claim 8
Independent Claim
65 words
A method of recording data comprising storing in a reservoir an ink having a meltable wax-base which undergoes a thermally reversible liquid to solid phase transition, effecting a solid to liquid or a liquid to lower viscosity liquid transition of the ink in the reservoir by heating the ink, and ejecting a drop of the heated liquid ink from a nozzle connected to the reservoir.
References Cited (Backward Citations)
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