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Liquid container, Liquid supply system

A liquid container and liquid supply technology, applied in the direction of printing, etc., can solve the problems of thickening of the inner wall and increase of the bonding layer, and achieve the effect of reducing the buffer space

Inactive Publication Date: 2004-05-12
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, if a bonding layer is provided in order to firmly bond multiple layers to each other, the thickness of the bonding layer inevitably concentrates on the central portion, thereby thickening the inner wall as a whole.

Method used

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  • Liquid container, Liquid supply system
  • Liquid container, Liquid supply system
  • Liquid container, Liquid supply system

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0061] Figure 1A The inner wall 102 of the ink cartridge 100 shown to 1C is composed of a different material. According to the materials applicable to the inner wall, the characteristics of the negative pressure are tested through the change of temperature.

[0062] The results of the inspection are shown in the following Table 1, wherein the capacity of the ink cartridge is 12CC; the thickness of the inner wall 102 is 200um (hereinafter referred to as the maximum thickness); the width of the ink cartridge is about 10m; and the outside temperature is 5°C and 35°C.

[0063] Material

5℃

35℃

Changes in negative pressure characteristics

PET

-95mmAq

-96mmAq

good

APL

-115mmAq

-110mmAq

good

HDPE

(comparative example)

-140mmAq

-30mmAq

bad

[0064] As can be seen from Table 1 above, when the inner wall is composed of PET (polyethylene terephthalate) or APL (Apel: registered trademark by...

no. 2 example

[0073] The outer wall 101 and inner wall 102 of the ink cartridge can be made of different materials, respectively. Furthermore, the inner wall 102 can be constructed by laminating several sheets of different materials.

[0074] The inventor has prepared one such as structure embodiment A (see Figure 10 ) ink cartridge, by using 1000 μm thick PP (polypropylene) to construct the outer wall 101, while using EVOH (EVH saponified product (ethylene ethyl acetate)) with a thickness of 10-15 μm to construct the outermost layer 102a of the inner wall, using The middle sheet layer 102b of the inner wall is constructed with APL having a thickness of 200-230 μm and a mixed resin containing a functional adhesive resin therein, and the innermost sheet layer 102c of the inner wall is constructed with HDPE (high-density polyethylene) having a thickness of 60 μm, and they are Rolled together to form the inner wall. The inner wall thickness of Structural Example A is about 300 μm.

[0075]...

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PUM

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Abstract

A liquid container comprises an inner wall that forms the liquid containing portion to contain liquid therein; an outer wall that forms the container to contain the liquid containing portion therein; and a liquid supply portion for supplying liquid from the liquid containing portion to the outside. Then, the inner wall is arranged to be a member to generate negative pressure in the liquid containing portion by being deformed following the leading-out of the liquid, and also, formed by the material having an elastic modulus change of 25% or less against the temperature change of use environment. With the liquid container thus structured, it is possible to implement the stable supply of liquid by stabilizing the characteristic of negative pressure in the liquid containing portion thereof irrespective of the temperature changes of use environments.

Description

technical field [0001] The present invention relates to a liquid container which utilizes negative pressure to supply liquid to the outside. The invention also relates to a liquid supply system. Background technique [0002] As disclosed in Japanese Patent Application Laid-Open No. Hei 9-267483 filed by the applicant, there has been disclosed a conventional ink cartridge having an ink containing area (hereinafter referred to as an ink containing portion) which Surrounded by inner walls which are separated from each other by outer walls which constitute its outer shell. [0003] The wall thickness of the inner wall of the aforementioned ink cartridge constitutes significantly greater than the wall thickness of the outer wall. Like this, even if the ink contained therein flows out and affects the deformation of the inner wall, the outer wall hardly deforms. At the same time, an air inlet is provided for the outer wall to introduce air into the The gap between the outer and i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J2/175
CPCB41J2/17559B41J2/17513B41J2002/17516
Inventor 松本英久服部省三山本肇清水英一郎日南淳林弘毅
Owner CANON KK
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