<title>Design aspects for a smart thermal ink-jet print head</title>

Ink jet printing, as the key point of digital printing development, has already got some progress as technical be concerned, and also it has been used in industrial producing. But until now, ink jet printing still has some problems to be solved, include satellite droplet, droplet dimension, and spreading of droplet on substrate and so on. These problems involving parameters include dimension and geometry of the print-head, quality and characteristics of the control signal, surface tension of the ink, viscosity of the ink, characteristics of the substrate surface and so on. In this paper we just analysis the influence of ink surface tension to the process from jet to formation of the droplet by establishing mathematical model, but keep other parameters unchanged. At last, we get the relationship between ink surface tension and droplet parameters, so that it can be used as theoretical basement for print-head design and researching of ink.

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Continuous ink-jet print head utilizing silicon micromachined nozzles

Sensors and Actuators A Physical ◽

10.1016/0924-4247(93)00707-b ◽

1994 ◽

Vol 43 (1-3) ◽

pp. 311-316 ◽

Cited By ~ 9

Author(s):

L. Smith ◽

A. Söderbärg ◽

U. Björkengren

Keyword(s):

Print Head ◽

Ink Jet

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Analysis of Drop-on-Demand Ink Jet Print Head for Rapid Prototyping

MRS Proceedings ◽

10.1557/proc-698-q4.5.1 ◽

2001 ◽

Vol 698 ◽

Author(s):

Dong-Youn Shin ◽

Paul Grassia ◽

Brian Derby

Keyword(s):

Rapid Prototyping ◽

Formation Process ◽

Stokes Equations ◽

Navier Stokes ◽

Hydrodynamic Characteristics ◽

Drop Formation ◽

Print Head ◽

Drop On Demand ◽

Ink Jet ◽

The Operating Mechanism

ABSTRACTThe rapid prototyping industry is growing dramatically because of its high potential to reduce product design and prototyping cycles. One of the recent technologies in this field is 3D printing using conventional ink jet technology. In order to maximize the capability of this process, it is required to understand the operating mechanism and drop formation process. The current work focuses on the mechanism of a piezoelectric cylindrical actuator and the hydrodynamic characteristics inside a print head in order to achieve more realistic boundary conditions for the numerical simulation of the drop formation process. Linearised Navier-Stokes equations for Newtonian fluid flow are solved analytically for the pump section with a constant radius and for the nozzle section with a tapering angle. Results from the developed solutions are input to Flow 3D and it is observed that analytical pressure histories show better agreement with numerical results than axial velocity histories. The presented analytic model can be used for fully further drop formation simulation as an upstream pressure boundary within an acceptable tolerance.

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Two-dimension full array high-speed ink-jet print head

Applied Physics Letters ◽

10.1063/1.2337107 ◽

2006 ◽

Vol 89 (7) ◽

pp. 073505 ◽

Cited By ~ 9

Author(s):

M. Einat ◽

N. Einat

Keyword(s):

High Speed ◽

Two Dimension ◽

Print Head ◽

Ink Jet

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Lifetime Improvement for Full-Width-Array Piezo Ink Jet Print Head Using Matrix Nozzle Arrangement

Journal of Imaging Science and Technology ◽

10.2352/j.imagingsci.technol.2009.53.5.050305 ◽

2009 ◽

Vol 53 (5) ◽

pp. 050305 ◽

Cited By ~ 1

Author(s):

Shinji Seto ◽

Takashi Yagi ◽

Masakazu Okuda ◽

Shigeru Umehara ◽

Masaki Kataoka

Keyword(s):

Full Width ◽

Print Head ◽

Ink Jet

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