Liquid-jet apparatus

A spray device and liquid technology, applied in printing and other directions, can solve problems such as ink waste

Active Publication Date: 2008-05-28
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in order to discharge the air bubbles in the ink introduction needle, it is necessary to perform frequent cleaning operations that generate an ink flow several times the flow rate during the recording operation, and there is a problem that ink is wasted needlessly.

Method used

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  • Liquid-jet apparatus
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0043] Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. In addition, in the embodiments described below, various limitations are made as preferred specific examples of the present invention, but the scope of the present invention is not limited to these unless there is no description of the meaning of limiting the present invention in the following description. Way. In addition, in this embodiment, an ink jet recording device (hereinafter, a printer) which is a typical liquid ejecting device will be described as an example.

[0044] Here, FIG. 1 is a perspective view of a printer represented by an inkjet recording device, FIG. 2 is an exploded perspective view of a recording head, FIG. 3 is a plan view of the recording head, FIG. 4 is a cross-sectional view of the recording head, and FIG. 5 is an outline of the recording head. Sectional view.

[0045] First, with reference to FIG. 1 , a schematic configuratio...

Embodiment approach 2

[0074] In Embodiment 1, the ink introduction needle 21 is provided with the groove portion 54 to discharge the air in the needle insertion port 44 to the outside, but by providing the groove portion corresponding to the sealing film 46 sealing the needle insertion port 44, more reliable The air in the needle insertion port 44 is exhausted to the outside. Hereinafter, the ink introduction needle of this embodiment will be described. In addition, the same code|symbol is attached|subjected to the same part as Embodiment 1, and redundant description is abbreviate|omitted.

[0075] First, the ink cartridge 7A will be described. FIG. 11 is a sectional view of a needle insertion port portion of the ink cartridge, and FIG. 12 is a perspective view of a valve body of the ink cartridge.

[0076] The ink cartridge 7A functions as a type of liquid storage means of the present invention, and stores ink supplied to the recording head 3 . The printer 1 of the present embodiment can eject ...

Embodiment approach 3

[0104] In Embodiment 1 and Embodiment 2, ink introduction needles 21 , 21A, 21B having tapered tips as liquid introduction columnar bodies were described, but the shape is not limited to this. The liquid introduction columnar body may be shaped to break the seal film 46 of the ink cartridge 7, 7A and insert it into the needle insertion port 44 to introduce the ink in the ink cartridge 7, 7A to the ink introduction path 38. For example, a protrusion protruding toward the needle insertion opening 44A of the ink cartridge 7, 7A may be provided. Fig. 19 (a) is a top view of the needle insertion port of the ink cartridge, Fig. 19 (b) is a top view of the ink introduction needle, Fig. 19 (c) is a cross-sectional view taken along line XX of Fig. 19 (b), and Fig. 19 (d) is a top view of the ink cartridge. (b) YY line sectional view. Hereinafter, the same parts as those of the inkjet recording apparatuses of Embodiments 1 and 2 are denoted by the same reference numerals, and redundant...

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PUM

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Abstract

The present invention provides a liquid ejection that suppresses air that becomes air bubbles from entering into a liquid introduction column when replacing a liquid storage member, thereby reducing the number of cleaning operations for discharging air bubbles in a liquid flow path, and suppressing consumption of liquid. device. The ink introduction needle (21) of the printer includes: a needle-shaped protrusion (23) having a tapered portion gradually expanding in diameter from the front end to the base end side; a straight portion (51) formed continuously from the tapered portion (48) in a straight line A groove portion (54) reaching the edge of the tapered portion (48) is provided on the tapered portion (48) of the needle-shaped protrusion (23) of the ink introduction needle (21).

Description

technical field [0001] The present invention relates to a liquid ejecting device such as an ink jet recording device, and more particularly to a liquid ejecting method in which a liquid stored in a liquid storage member is introduced to a liquid ejecting head side through a liquid introducing needle, and the liquid is ejected from a nozzle opening of the liquid ejecting head. device. Background technique [0002] As a representative of a liquid ejecting device having a liquid ejecting head capable of ejecting liquid and ejecting various liquids from the ejecting head, for example, ink droplets ejected and hit on recording paper as an ejection object (recording medium) , so as to record the inkjet printer and other image recording devices. In addition, in recent years, it has been applied not only to the image recording device but also to various manufacturing devices. For example, in display manufacturing devices such as liquid crystal displays, plasma displays, organic EL...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/175
Inventor 小池保则大久保胜弘冈泽宣昭熊谷惠一藤城武
Owner SEIKO EPSON CORP
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