Design and Performance of Inkjet Print Heads for Non-Graphic-Arts Applications

Abstract

Inkjet print heads have become the dominant printing element for home and office printers; they have been a key driver forthe digitization of wide-format graphic arts printing and other printing areas as diverse as addressing and carton coding. In the past few years, inkjet print heads have begun to have an impact in areas outside the graphics arts. In these applications, the inkjet print head may be considered a manufacturing tool; this implies that it will differ in design depending on the application. Also, standards forreliability, consistency, and dependability will differ from those in graphic arts areas. Even though non-graphic-arts applications differ widely in their details, there are general considerations in terms of the systems that are required. Each nontraditional application has specific goals for manufacturing, and a unique inkjet print head designed to meet these goals may be required. This article focuses on a specific piezo-based inkjet print head that has been engineered to meet the manufacturing requirements for flat-panel displays basedon light-emitting polymeric materials.

Drop-on-demand microdroplet generation: a very stable platform for single-droplet experimentation

“…7 DoD droplet dispensers most are commonly deployed in inkjet printing platforms as they offer great control over droplet delivery timing and liquid volume. 8,9 Inkjet printing exploits the droplet stream generated from the dispenser to deposit a thin layer of liquid onto a substrate and is commonly implemented, for example, in the generation of graphics, 10 deposition of biomaterials 11,12 and fabrication of electronic circuits. 13 In order to achieve a clean and even thin-layer on the substrate the droplets must be highly reproducible and most commercial inkjet dispensers having droplet size reproducibility of ~1%.…”

Sintering Behavior of Copper Nanoparticles

“…[1][2][3] The establishment of such low-cost graphic printing techniques has facilitated the development of affordable electronics for a variety of applications, including flexible displays, smart labels and animated posters. 4,5 Printed electronics combines materials, printing equipment and process technologies.…”

“…4,5 Printed electronics combines materials, printing equipment and process technologies. Electrically functional materials, such as metal nanoparticles, 6 semiconductor nanomaterials, 7 polymers, 3,8 and carbon nanotubes, 9 are employed in printable electronics. These materials can be printed onto a substrate, to create active or passive devices, such as conducting electrodes, thin film transistors and resistors.…”

Research of influencing factors on the change of geometric parameters of Braille elements on self-adhesive labels

“…Quality of items Braille printed on self-adhesive label depends on technological (physical and mechanical proper-ties of the substrate and varnish) and operating conditions (temperature and pressure of varnish, substrate feed rate) factors that require detailed studies for getting quality tactile images. Printing Braille with ink-jet, varnish viscosity and printing material surface stresses have effect to Braille dot size [10][11][12].…”