Inkjet printer head

An inkjet print head and nozzle technology, applied in printing and other directions, can solve problems that have not yet received attention

Active Publication Date: 2015-10-14
KK TOSHIBA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the conventional inkjet print head, no attention has been paid to the relationship between the nozzle diameter of the nozzle plate, which is a resin member having nozzles, and the diameter of the communicating hole of the metal cap stacked on the nozzle plate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0025] (structure)

[0026] Figure 1 to Figure 5 (B1) to (B6) show the first embodiment of the present invention. The inkjet head 11 of the present embodiment is an inkjet head of a so-called shear mode shared wall method and an ink circulation type, and has a structure called a side jet type. like figure 1 and figure 2 As shown, the inkjet head 11 has: a substrate 12, a frame member 13 bonded to the substrate 12, a nozzle plate 14 bonded to the frame member 13, and a piezoelectric nozzle bonded to the substrate 12 at a position inside the frame member 13. Component 15 and IC 16 for driving the nozzle head for driving the piezoelectric component 15 .

[0027] The nozzle plate 14 is formed of a rectangular polyimide film. The nozzle plate 14 has a pair of nozzle rows 21 . Each nozzle row 21 includes a plurality of nozzles 22 .

[0028] The piezoelectric member 15 is formed by bonding, for example, two piezoelectric plates 23 made of PZT (lead zirconate titanate) so tha...

no. 2 approach

[0055] (structure)

[0056] Figure 6 to Figure 10 (B1) to (B6) show the second embodiment of the present invention. The same code|symbol is attached|subjected to the same part as 1st Embodiment. The inkjet head 11 of the present embodiment is an inkjet head of a so-called shear mode shared wall method and an ink circulation type, and has a structure called a side jet type. Such as Figure 6 and Figure 7 As shown, the inkjet head 11 has: a substrate 12, a frame member 13 bonded to the substrate 12, a nozzle plate 14 bonded to the frame member 13, and a piezoelectric nozzle bonded to the substrate 12 at a position inside the frame member 13. Component 15 and IC 16 for driving the nozzle head for driving the piezoelectric component 15 .

[0057] The nozzle plate 14 is formed of a resin material having a thickness of 25 μm to 75 μm, for example, a rectangular polyimide film. The nozzle plate 14 has a pair of nozzle rows 21 . Each nozzle row 21 includes a plurality of nozz...

no. 3 approach

[0089] (structure)

[0090] Figure 11 to Figure 15 (B1)-(B6) show the 3rd embodiment of this invention. The same code|symbol is attached|subjected to the same part as 1st and 2nd embodiment. The inkjet head 11 of the present embodiment is an inkjet head of a so-called shear mode shared wall method and an ink circulation type, and has a structure called a side jet type. like Figure 11 and Figure 12 As shown, the inkjet head 11 has: a substrate 12, a frame member 13 bonded to the substrate 12, a nozzle plate 14 bonded to the frame member 13, and a piezoelectric nozzle bonded to the substrate 12 at a position inside the frame member 13. Component 15 and IC 16 for driving the nozzle head for driving the piezoelectric component 15 .

[0091] The nozzle plate 14 is formed of a resin material having a thickness of 25 μm to 75 μm, for example, a rectangular polyimide film. The nozzle plate 14 has a pair of nozzle rows 21 . Each nozzle row 21 includes a plurality of nozzles 2...

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PUM

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Abstract

In accordance with one embodiment, an inkjet head comprises a plurality of groove-shaped pressure chambers formed on piezoelectric members of which the polarization directions are opposite, and a nozzle plate arranged at the lateral side of the pressure chambers across a lid section with high rigidity. A plurality of through holes connected to a plurality of nozzles formed on the nozzle plate is formed in the lid section. The inkjet head is set in a range of 10-25% before and after a center, that is, a length ratio where the relation between ejection voltage of ink ejected from the nozzles and a length ratio between the length of the through hole of the lid section in the longitudinal direction of the pressure chamber and the length of the pressure chamber in the longitudinal direction of the pressure chamber is minimized.

Description

technical field [0001] Embodiments of the invention relate to inkjet printheads. Background technique [0002] As an inkjet printhead, for example, a shear mode shared wall type inkjet printhead is known, and a so-called side jet type has nozzles on the side of the pressure chamber. The inkjet print head has a substrate, a frame member bonded to the substrate, a nozzle plate bonded to the frame member, a piezoelectric member bonded to the substrate at a position inside the frame member, and a head for driving the piezoelectric member. Driver IC. In addition, when printing, the piezoelectric member is driven, and the pillars serving as driving elements provided on both sides of each pressure chamber in the piezoelectric member are deformed in shear mode and bent, thereby pressurizing the ink in the pressure chamber, Thus, ink droplets are ejected from the nozzles. [0003] In a conventional inkjet print head, when a flexible resin nozzle plate is fixed to a piezoelectric m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/14
CPCB41J2/1433B41J2/14201B41J2/14209
Inventor 下里正志西田英明山本敬三郎楠竜太郎
Owner KK TOSHIBA
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