Patent
Nozzleless liquid droplet ejectors
Calvin F. Quate,Butrus T. Khuri-Yakub +1 more
- 05 Jan 1987
87
TL;DR: In this paper, the size of the ejected droplets is determined by the waist diameter of the focused acoustic beam, and provision is made for producing a controllable acoustical asymmetry for steering the focused beam in a direction generally parallel to the surface of the reservoir.
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Abstract: A nozzleless print head for ink jet printing and the like comprises one or more essentially planar surface acoustic wave transducers which are submerged at a predetermined depth in a liquid filled reservoir, so that each of the transducers launches a converging cone of coherent acoustic waves into the reservoir, thereby producing an acoustic beam which comes to a focus at or near the surface of the reservoir (i.e., the liquid/air interface). The acoustic beam may be intensity modulated to control the ejection timing, or an external source may be used to extract droplets from the acoustically excited liquid on the surface of the reservoir on demand. Regardless of the timing mechanism employed, the size of the ejected droplets is determined by the waist diameter of the focused acoustic beam. To control, the direction in which the droplets are ejected, provision may be made for producing a controllable acoustical asymmetry for steering the focused acoustic beam in a direction generally parallel to the surface of the reservoir.
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Citations
Patent
Ink jet printing process
Thomas W. Smith,Kathleen M. McGrane,David J. Luca,William W. Limburg +3 more
- 06 Dec 2001
TL;DR: In this paper, the authors present a process comprising of a developing composition comprising a liquid vehicle and a color developer, an oxidizing composition comprising of liquid vehicles and oxidizing agents, and a coloring composition consisting of a dye coupler and a fixative.
167
Multi-discrete-phase Fresnel acoustic lenses and their applications to acoustic ink printing
TL;DR: In this paper, the authors describe the diffractive performance of multi-discrete-phase binary Fresnel lenses for acoustic ink printing applications, which are defined by patterning acoustically flat surfaces, such as a flat face of a substrate or a layer of etchable material.
105
Acoustically mediated fluid transfer methods and uses thereof
TL;DR: In this paper, acoustic waves are used to transfer small amounts of fluid in a non-contact manner, where the fluid is not contacted by any fluid transfer device such as a pipette, the opportunities for contamination are minimized.
92
Acoustic ejection of fluids from a plurality of reservoirs
TL;DR: In this article, a method and device for the acoustic ejection of fluid droplets from each of a plurality of fluid-containing reservoirs is presented, where the droplets are ejected toward sites on a substrate surface for deposition thereon.
90
Patent
Ink jet transparencies
Shadi L. Malhotra,Kirit N. Naik,David N. MacKinnon,Arthur Y. Jones +3 more
- 03 Jun 1996
TL;DR: In this article, a transparency comprised of a supporting substrate, and thereover two coatings, a first coating layer which comprises a binder having a melting point of 100° to 275° C. and a heat dissipating and a fire retardant component, a second dye immobilizing light resistant, water resistant ink receiving coating layer situated so that the first layer is between the second dye, and the substrate, said second layer comprising a blend of a hydrophilic polymer, an ink spreading agent, cationic component monomeric or polymeric capable of complexing with
89
References
Patent
Liquid drop emitter
Kenneth T. Lovelady,Larimore F. Toye +1 more
- 26 Dec 1979
TL;DR: A liquid drop emitter utilizing acoustical principles ejects liquid from a body of liquid onto a moving document to form characters or bar codes thereon as discussed by the authors, which can be used to generate bar codes.
131
Patent
Electrostatic ink ejection printing head
Paolo Cielo,William D. Westwood +1 more
- 25 Oct 1977
TL;DR: An electrostatic ink ejection printing head uses an ink reservoir having small holes in its wall, the ink retained within the holes by surface tension as discussed by the authors, and an electrostatic field is produced at each hole, as required, to overcome the surface tension and cause the ink to move into contact with a paper sheet to produce a dot.
65
Patent
Ink jet method and apparatus using a thin film piezoelectric excitor for drop generation with spherical and cylindrical fluid chambers
Roger G. Markham,Doyle P. Skinner +1 more
- 04 Jun 1979
TL;DR: In this article, a thin polyvinylidene fluoride film was operated in the piezoelectric thickness mode to stimulate fluid drop formation for ink jet printing systems.
21
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