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Ink jet printer

An inkjet printer, printer technology, used in printing, inking devices, etc.

Inactive Publication Date: 2007-02-07
XAAR TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this prior art, the drive mechanism does not extend in the direction of the nozzle axis

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] 1(a) is a sectional view of an actuator 30 formed in a piezoelectric sheet 14 of a drop-on-demand inkjet printer according to a first embodiment of the present invention. The piezoelectric sheet 14 , the insert plate 17 and the nozzle plate 18 define an ink chamber 22 extending radially around the axis of the nozzles 19 formed in the nozzle plate 18 . The ink chamber 22 communicates with the nozzle 19 through a hole 20 formed in the insert plate 17 . As shown in FIG. 1( a ), the piezoelectric sheet 14 forms part of a layered structure including an interposer plate 17 , a nozzle plate 18 and a base 44 .

[0053] Ink is supplied to the ink chamber 22 by a pair of ink channels 15 formed in the piezoelectric sheet, the ink channels 15 being circumferentially disposed around the ink chamber 22 . As shown in Figure 1(b), the ink channel 15 communicates with a manifold 102 formed in the piezoelectric sheet 14, and ink is supplied to the manifold from an ink container (not sho...

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PUM

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Abstract

Drop-on-demand ink jet printing apparatus comprises a nozzle (19) on a nozzle axis; an ink chamber (22; 122) communicating with the nozzle; a piezoelectric actuating structure (31; 131), said structure extending around the nozzle axis and extending in the direction of the nozzle axis; an actuating surface facing the nozzle, said structure being actuable to move said actuating surface in the direction of the nozzle axis to effect droplet ejection through the nozzle; and electrodes (24,25;124,125) for applying an actuating electric field to the actuating structure.

Description

technical field [0001] The present invention relates to drop on demand inkjet printers, and more particularly, the invention relates to a drop on demand inkjet printer having a two-dimensional array of ink chambers. Background technique [0002] US Patent No. 5,459,501A discloses an inkjet printing head, which includes an ink driving unit formed on a first substrate and an ink storage unit formed on a second substrate. The ink drive unit includes a thin film piezoelectric sensor formed on one side of the substrate. The ink storage unit includes an etched cavity in the substrate, the cavity having a through-substrate hole at the bottom to form an ink nozzle. The ink driving unit and the ink storage unit are bonded together with the piezoelectric unit. The actuation sensor ejects ink from the reservoir through the ink nozzles. [0003] As shown in FIG. 4 of this prior art, the piezoelectric actuation structure is an expandable layer 44 formed of a layer of piezoelectric mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J2/045B41J2/055B41J2/14
CPCB41J2002/14459B41J2202/18B41J2/14209B41J2002/14225B41J2/095
Inventor R·A·哈维S·特姆普勒
Owner XAAR TECH LTD