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Title: Method and apparatus for producing drops using a drop-on-demand dispenser

Patent ·
OSTI ID:875015
;

A method and apparatus for dispensing fluid from a drop-on-demand (DOD) fluid dispenser. The method involves withdrawing fluid in the dispenser for a first duration of time, followed by a second duration of time during which the fluid is propelled toward the orifice of the dispenser. Following the period during which the fluid is propelled, there is a second withdrawing of the fluid into the dispenser. The duration of the propelling period is shorter than the duration of either the first withdrawing or the second withdrawing. The propelling of the fluid results in the extension of a small tongue of fluid from the meniscus of the fluid. The second withdrawing of the fluid results in a retraction of the meniscus into the passageway such that only the small tongue of fluid separates and is ejected from the dispenser.

Research Organization:
Purdue Univ., West Lafayette, IN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FG02-96ER14641
Assignee:
Purdue Research Foundation (West Lafayette, IN)
Patent Number(s):
6,513,894
Application Number:
09/716,576
OSTI ID:
875015
Resource Relation:
Patent File Date: 2000 Nov 20
Country of Publication:
United States
Language:
English

References (20)

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Nonreproducible phenomena in thermal ink jets with real high-speed cine photomicrography
  • Rembe, Christian; aus der Wiesche, Stefan; Beuten, Michael
  • SYBEN-Broadband European Networks and Electronic Image Capture and Publishing, SPIE Proceedings https://doi.org/10.1117/12.324123
conference September 1998
Significance of inertia and resistance in fluidics of thermal ink-jet transducers conference March 1996
Mechanism of drop constriction in a drop-on-demand inkjet system
  • Badie, Ramin; Dirk Frits, de Lange
  • Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, Vol. 453, Issue 1967 https://doi.org/10.1098/rspa.1997.0137
journal December 1997
High-density oligonucleotide arrays journal January 1996
Real-cinematographic visualization of droplet ejection in thermal ink jets conference March 1996
Ink-Jet Printing of Catalyst Patterns for Electroless Metal Deposition journal February 1999
A One-Dimensional Numerical Model of a Drop-On-Demand Ink Jet journal March 1986
Hydro-Acoustics of Piezoelectrically Driven Ink-Jet Print Heads journal December 1998
Ink jet printing nozzle arrays etched in silicon journal July 1977
The Design of a Droplet Ejector journal September 1999
Characterization of an Inkjet Chemical Microdispenser for Combinatorial Library Synthesis journal February 1997
Microjet fabrication of microlens arrays journal September 1994
Thermal ink jet technology journal July 1997
Drop formation by DOD ink-jet nozzles: A comparison of experiment and numerical simulation journal January 1987
Ink-Jet Printing book January 1985
Hydrodynamics of small tubular pumps journal February 1984

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