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Liquid container for liquid-jet head

A liquid container and liquid technology, applied in the direction of instruments, applications, household appliances, etc., can solve the problems of unstable internal negative pressure, ink leakage, and restrictions

Inactive Publication Date: 2005-09-14
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the divided chamber type has a problem that when the position of the ink tank changes, the small hole cannot reach the ink depending on the amount of remaining ink, and as a result, the internal negative pressure becomes unstable and may even reach the level of ink leakage. Therefore, this ink tank has just been limited in use

Method used

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  • Liquid container for liquid-jet head
  • Liquid container for liquid-jet head
  • Liquid container for liquid-jet head

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0110] image 3 represents the first embodiment. The material 3 that creates the vacuum in the ink tank is an ink-absorbing material such as polyurethane foam or the like. When the absorbent material is placed in the vacuum-generating material tank 4, a gap A32 is left in a part of the vacuum-generating material tank to function as a passage for introducing air. This gap extends to the vicinity of the gap 8 between the bottom of the ink tank 11 and the end 8 of the rib 5 . In this way, it communicates with the atmosphere through the vent. When the ink supply from the ink supply portion is started, the ink in the absorbent material 3 is first consumed, so that the internal pressure of the ink supply portion reaches a predetermined value. Then, stably formed in the absorbent material 3 image 3 The ink surface A31 is shown, while a meniscus between the ink and the atmosphere is formed adjacent to the void 8 . The height of the gap 8 is preferably not greater than 1.5 mm, and ...

Embodiment 2

[0142] Figure 5 represents another example device.

[0143] In this embodiment, two ribs 61 are provided on the partition rib 5 of the vacuum-generating material tank 4 . An air introduction passage A51 is formed between these two ribs and the absorbent material 3 . The position of the bottom end A of the rib 61 is higher than the bottom end B of the rib plate 5, so that, as long as a rectangular parallelepiped absorbent material 3 is simply put into the vacuum-generating material tank 4, the gap 8 is covered by the absorbent material 3 . Therefore, the air introduction channel A51 can easily and stably extend to a position very close to the gap 8 . Arrow A52 indicates the air flow direction.

[0144] With this ink tank, the printing process can be effectively performed, and it has been confirmed that Figure 5 The ink surface and meniscus shown in , can be quickly formed due to the ink supply surface caused by the recording work, and the rapid replacement between air an...

Embodiment 3

[0146] Figure 6 A device showing a third embodiment in which the number of ribs 71 is increased to increase the number of air introduction passages. Ribs 71 are provided to separate the vacuum-generating material tanks. According to this embodiment, a plurality of air introduction passages can provide stable airflow from the vent 13 to the vicinity of the gap 8, so, like the first and second embodiments, ink supply can be realized with a small pressure loss, And can stably realize high-speed printing process.

[0147] In this embodiment, even if the passage port 13 is arranged far from the gap 8, air can be smoothly introduced.

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PUM

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Abstract

A fluid container for fluid spraying head, comprises: a chamber for containing a negative pressure generator, which is provided with a vent hole and a fluid supply part; a fluid chamber in liquid communication with the chamber for containing a negative pressure generator by a liquid communication passage; a wall forming the chamber for containing a negative pressure generator. The chamber for containing a negative pressure generator is provided with a passage for intruducing surrounding air to admit the gas-liquid exchanging in the liquid communication passage during consuming the liquid when the liquid level of the negative pressure generator is maintained within a level above the liquid communication passage. The negative pressure generator is disposed in a passage for connecting the vent hole and the passage for intruducing surrounding air.

Description

[0001] This application is a divisional application of "Replaceable Process Cartridge for Bubble Jet Printer" filed on July 24, 1993 with application number No. 02106257.9. technical field [0002] The present invention relates to a liquid container for a liquid ejecting head. Background technique [0003] An ink tank used with an inkjet recording device supplies an appropriate amount of ink according to the amount of ink ejected by the recording head during recording, and at the same time prevents ink from leaking through the ejection port of the recording head when recording is not performed. [0004] When the ink tank is of a replaceable type, it is required that the ink tank can be easily disassembled from the recording device without ink leakage, and that the ink can be reliably supplied into the recording head. [0005] A common example of an ink tank usable with an inkjet recording device is disclosed in Japanese Laid-Open Patent Application No. 87242 / 1988 (first prio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/175G01D15/16
CPCB41J2/17506B41J2/17513B41J2/1752B41J2/17523B41J2/17533B41J2/17536B41J2/17553B41J2/17556B41J2/17566B41J2002/17573C09D11/30
Inventor 小板桥规文池田雅实须釜定之浅井直人平林弘光阿部力佐藤博名越重泰清水英一郎日隈昌彦秋山勇治杉本仁松原美由纪佐藤真一后藤史博植月雅哉
Owner CANON KK
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