Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Droplet deposition apparatus

A droplet and actuator technology, applied in printing, inking devices, etc., can solve problems such as uneven shrinkage and crossing of piezoelectric materials

Inactive Publication Date: 2006-01-18
XAAR TECH LTD
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This shrinkage is not uniform across the piezoelectric material, and this results in actuators with varying channel spacing along the length of the array

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Droplet deposition apparatus
  • Droplet deposition apparatus
  • Droplet deposition apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0061] In the drawings, similar elements are denoted by the same reference numerals.

[0062] refer to Figure 1A with 1B ,in Figure 1B is along Figure 1A In the cross-sectional view of line X-X, the impulse droplet printing head consists of a cover element 14 and an actuator element 1, and has an ejection chamber 12 defined between these elements.

[0063] The cover element 14 is made of a nickel alloy, which is a material thermally matched to the material of the actuator element 12 , which is mainly silicon but also includes the active part 8 . The firing chamber is elongate and has an acoustic length AL defined by the distance between ink supply ports 3 formed through the actuator elements. The variation in ink depth at the ink supply port provides an acoustic boundary that effectively reflects sound waves propagating in the ink.

[0064] The ink supply port 3 is arranged to supply ink into the chamber or to allow a jetting fluid to circulate through the chamber by pas...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A drop on demand ink jet printer, has a passive component (14) defining ink ejector chambers (12) with respective ejection nozzles (16); and an actuator component comprising a body (2) with an opening and an actuator structure (8) located within the opening. The actuator structure is formed of piezoelectric material by moulding from a slurry or vacuum forming of flexible sheets using formers that are burnt away. MEM's techniques may also be employed to build the structure on a silicon wafer using a succession of masked deposition; etch back and similar process steps.

Description

technical field [0001] The present invention relates to a drop deposition apparatus and, in particular, to drop-on-demand inkjet printers, components thereof and methods of their manufacture. Background technique [0002] Drop-on-demand inkjet printers typically fall into two broad categories: bubble jet or mechanical. Bubble jet printers eject droplets by selectively heating a fluid and generating air bubbles that provide sufficient force to eject the droplets. Mechanical printers eject droplets by changing the volume of the chamber to apply pressure to the fluid within the chamber and thereby eject the droplets. The present invention relates generally to mechanical drop-on-demand inkjet printers and more particularly to mechanical printers using piezoelectric materials. Therefore, the bubble jet device will not be described in more detail. [0003] The piezoelectric material traditionally used in inkjet printing is lead zirconate titanate (PZT) ceramic material. PZT is...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B41J2/14
CPCB41J2/14209B41J2002/14225B41J2202/20B41J2/14201B41J2/045B41J2/14
Inventor 斯蒂芬·坦普尔罗伯特·哈维罗伯特·乔纳森·洛保罗·雷蒙德·德鲁里
Owner XAAR TECH LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com