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Liquid sealing structure and method for preparing same, liquid containing container, re-filling liquid container and re-filling method

A technology for a liquid container and a liquid container, which is applied to printing, printing devices, etc., can solve the problems of seal failure, incomplete elastic sealing between the sealing member and the inner wall of the ink passage, and damage to the elastic seal between the sealing member and the inner wall of the ink passage. The effect of preventing liquid leakage

Inactive Publication Date: 2008-08-27
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, for example, when the accuracy of the roundness of the ink passage of the ink outlet part deteriorates, the elastic seal between the sealing member and the inner wall of the ink passage is not complete, and ink leakage may occur.
In addition, when the ink is pressurized and supplied as described in Patent Document 1, if the elastic sealing property between the sealing member and the inner wall of the ink passage is weak, the seal may be broken by the pressure-fed ink.
Also, when the ink cartridge is dropped or vibration is applied to the ink cartridge, the elastic seal between the sealing member and the inner wall of the ink passage may be temporarily broken.
[0009] This problem is not limited to ink cartridges, and the same problem occurs in various applications of the type that elastically seals between the inner wall of the liquid passage formed in the liquid outlet part and the sealing member.

Method used

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  • Liquid sealing structure and method for preparing same, liquid containing container, re-filling liquid container and re-filling method
  • Liquid sealing structure and method for preparing same, liquid containing container, re-filling liquid container and re-filling method
  • Liquid sealing structure and method for preparing same, liquid containing container, re-filling liquid container and re-filling method

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no. 1 approach

[0117] Hereinafter, preferred embodiments of the present invention will be described in detail. The embodiments described below are not intended to unduly limit the content of the present invention described in the claims, and not all the configurations described in the present embodiments are essential as solutions of the present invention.

[0118] (Brief description of the liquid ejection device)

[0119] As shown in FIG. 1 , a printer 11 serving as a liquid ejecting device or a liquid consuming device according to this embodiment is covered by a housing 12 . And, as shown in FIG. 2, in the frame body 12, there are: a guide shaft 14, a carriage 15, a recording head 20 as a liquid ejection head, a valve unit 21, an ink cartridge 23 as a liquid container, and a pressurizing pump 25 ( Refer to Figure 1).

[0120] As shown in FIG. 1 , the frame body 12 is a box having an approximately rectangular parallelepiped shape, and an ink cartridge holder 12 a is formed on the front su...

no. 2 approach

[0171] FIG. 6 is an exploded perspective view of an ink outlet unit 50 different from that of the first embodiment. The external shape of the ink outlet part 50 shown in FIG. 6 is different from the ink outlet part 32b of the first embodiment. In addition, in the present embodiment, the sealing film F2 having the cutout portion C is not welded to the ink case, but is only welded to the ink outlet portion 51 and the sealing member 60 . This embodiment differs from the first embodiment only in the above points, and is the same as the first embodiment in other points. The notch C shown in FIG. 6 may be the same cutout shown in FIG. 3 as in the first embodiment.

[0172] FIG. 7 is a partial cross-sectional view of a state before the sealing member 60 is inserted into the ink outlet 51 and the sealing film F2 is thermally welded.

[0173] The ink outlet portion 50 has an annular first weldable portion 54 protruding from the opening end surface 53 with a height H. Similarly, the ...

no. 3 approach

[0178] Next, a third embodiment will be described using FIGS. 8 to 15( b ). In this embodiment, the structure of an ink cartridge serving as a liquid container is different from that of the first embodiment. The ink cartridge of this embodiment can be mounted in the same liquid ejecting device as that of the first embodiment. Therefore, detailed descriptions related to the liquid ejecting device are omitted.

[0179] 8 is an exploded perspective view of an ink cartridge as an embodiment of a liquid storage container according to a third embodiment, and FIG. 9( a ) shows installation of an ink pack as a liquid storage unit and a spacer filling a gap around the ink pack. The perspective view of the state in the bag housing portion of the container main body shown in FIG. 8, FIG. 9(b) is an enlarged view of part A of FIG. 9(a), and FIG. Exploded stereogram.

[0180] In addition, FIG. 11 is an assembled perspective view of the remaining liquid amount detection unit, and FIG. 12...

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Abstract

Liquid leakage between an inner wall of a liquid channel and a sealing member is prevented in a condition that the elastic sealing between the inner wall of the liquid channel formed in the liquid leading out portion and the sealing member is not depended, and the sealing membrane is prevented from being drafted when the liquid leading out member inserts through the sealing membrane. The liquid sealing structure comprises a liquid leading out portion (32b) comprising a liquid channel (32d) and an opening end surface formed at the liquid leading out end of the liquid channel (32d); a sealing member (33) disposed in the liquid channel (32d) of the liquid leading out portion (32b); a valve (34, 35) disposed at the internal side of the sealing member (33) in the liquid channel (32d); and a sealing membrane (F2) covering the liquid channel (32d) of the liquid leading out portion (32b) and the opening end surface, and hot-melting applying on the opening end surface and the sealing member (33). A cut out portion is formed on the sealing membrane (F2).

Description

technical field [0001] The present invention relates to, for example, a liquid-tight structure suitable for use in an ink cartridge for a printer, a method for manufacturing the same, a liquid container, a refill liquid container, and a method for refilling the same. Background technique [0002] Conventionally, there is an inkjet printer as a liquid ejecting device that ejects liquid droplets from nozzles of a liquid ejecting head. Some of the inkjet printers have an off-carriage ink supply system in which the ink cartridges are loaded in a position other than the carriage. As a case of having this off-carriage type ink supply system, there is a case of having a large-capacity ink cartridge for large-scale printing, and a case of reducing the size and thickness of an inkjet printer by reducing the size of the carriage by not loading the ink cartridge Wait. [0003] In this off-rack type ink supply system, for example, the bracket is arranged on the side of the main body. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/175
CPCB41J29/00B41J2/1752Y10T29/49401B41J2/17596B41J2/17509B41J2/17513B41J2/17553
Inventor 青木雄司木村仁俊野泽泉
Owner SEIKO EPSON CORP
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