Liquid discharge head, and recording device using the same

Patent metadata

Field	Value
Publication number	US-10086609-B2
Application number	US-201515507467-A
Country	US
Kind code	B2
Filing date	Aug 26, 2015
Priority date	Aug 29, 2014
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

A liquid discharge head is configured to achieve decrease in temperature difference in the liquid discharge head, and includes a recording device including the liquid discharge head. The liquid discharge head includes a channel member having a plurality of discharge holes, a plurality of pressurization chambers, and a plurality of common channels, and a plurality of pressurizing parts. The plurality of common channels extends in a first direction and configures a common channel group aligned in a second direction crossing the first direction, the common channels are connected with the plurality of pressurization chambers disposed along the common channels among the plurality of pressurization chambers, and the channel member is disposed outside, in the second direction, with respect to the common channel group, and further includes a first end channel extending in the first direction, and the first end channel is lower in channel resistance than the common channels.

First claim

The invention claimed is:

1. A liquid discharge head comprising:
a channel member including a plurality of discharge holes, a plurality of pressurization chambers connected with the plurality of discharge holes, respectively, and a plurality of common channels; and
a plurality of pressurizing parts for pressurizing the plurality of pressurization chambers, respectively,
wherein the plurality of common channels extends in a first direction and configures a common channel group aligned in a second direction crossing the first direction,
wherein the common channels are connected with the plurality of pressurization chambers disposed along the common channels among the plurality of pressurization chambers, and
wherein the channel member is disposed outside, in the second direction, with respect to the common channel group, and further includes a first end channel extending in the first direction, and the first end channel is lower in channel resistance than the common channels,
wherein in a section perpendicular to the first direction, the first end channel has at least one wide portions larger in width than the common channels, and is provided, at the wide portion, with a damper.

2. The liquid discharge head according to claim 1 , wherein the channel member extends in the first direction between the common channel group and the first end channel, and includes a second end channel substantially equal in channel resistance to the common channels.

3. The liquid discharge head according to claim 1 , wherein the channel member includes a first integrated channel for supply of liquid to the plurality of common channels and the first end channel, and a second integrated channel for collection of liquid from the plurality of common channels and the first end channel.

4. The liquid discharge head according to claim 3 , wherein the first end channel has a narrowed portion smaller in sectional area than the wide portions.

5. The liquid discharge head according to claim 4 , wherein the first end channel includes at least two wide portions, one of the wide portions is disposed between the narrowed portion and the first integrated channel, and the other wide portion is disposed between the narrowed portion and the second integrated channel.

6. The liquid discharge head according to claim 3 , wherein with respect to the first integrated channel, a portion connected with the first end channel is disposed between a portion wherein the first integrated channel receives the supply of liquid from the outside and a portion connected with the plurality of common channels.

7. The liquid discharge head according to claim 1 , wherein with respect to the second integrated channel, a portion connected with the first end channel is disposed between a portion wherein the liquid is discharged from the second integrated channel to the outside and a portion connected with the plurality of common channels.

8. A recording device comprising:
the liquid discharge head according to claim 1 ;
a conveyor for conveying a recording medium relatively to the liquid discharge head; and
a controller for controlling the liquid discharge head.

9. A liquid discharge head comprising:
a channel member including a plurality of discharge holes, a plurality of pressurization chambers connected with the plurality of discharge holes, respectively, and a plurality of common channels; and
a plurality of pressurizing parts for pressurizing the plurality of pressurization chambers, respectively,
wherein the plurality of common channels extends in a first direction and configures a common channel group aligned in a second direction crossing the first direction,
wherein the common channels are connected with the plurality of pressurization chambers disposed along the common channels among the plurality of pressurization chambers, and
wherein the channel member is disposed outside, in the second direction, with respect to the common channel group, and further includes a first end channel extending in the first direction, and the first end channel is lower in channel resistance than the common channels,

wherein in a section perpendicular to the first direction, the first end channel has at least one wide portion larger in width than the common channels,
wherein the channel member includes a first integrated channel for supply of liquid to the plurality of common channels and the first end channel, and a second integrated channel for collection of liquid from the plurality of common channels and the first end channel,
wherein the first end channel has a narrowed portion smaller in sectional area than the wide portions, and
wherein the first end channel includes at least two wide portions, one of the wide portions is disposed between the narrowed portion and the first integrated channel, and the other wide portion is disposed between the narrowed portion and the second integrated channel.

10. The liquid discharge head according to claim 9 , wherein with respect to the first integrated channel, a portion connected with the first end channel is disposed between a portion wherein the first integrated channel receives the supply of liquid from the outside and a portion connected with the plurality of common channels.

11. The liquid discharge head according to claim 9 , wherein with respect to the second integrated channel, a portion connected with the first end channel is disposed between a portion wherein the liquid is discharged from the second integrated channel to the outside and a portion connected with the plurality of common channels.

12. A recording device comprising:
the liquid discharge head according to claim 9 ;
a conveyor for conveying a recording medium relatively to the liquid discharge head; and
a controller for controlling the liquid discharge head.

Assignees

• Kyocera Corp

Inventors

• Hozumi Daisuke
• Kawamura Hiroyuki
• Kobayashi Naoki

Classifications

• B41J2/06

  by electric or magnetic field · CPC title

• B41J2002/14306

  Flow passage between manifold and chamber · CPC title

• B41J2202/12

  with ink circulating through the whole print head · CPC title

• B41J2002/14217

  Multi layer finger type piezoelectric element · CPC title

• B41J2/1429

  of tubular type · CPC title