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Liquid ejection head, liquid supply apparatus, liquid ejection apparatus, and liquid supply method

A liquid discharge head and liquid supply technology, applied to inking devices, printing, etc., can solve problems such as difficulty in recording actions, increased pressure fluctuations, and increased flow resistance, and achieve high-efficiency air bubble removal, recording, and improved Effect of Liquid Supply Rate

Inactive Publication Date: 2011-02-16
COPYER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, according to the methods described in such JP-A-06-064183 and JP-A-08-118672, since the valve is provided near the filter, the structure becomes complicated.
[0007] Furthermore, according to these conventional methods, since the filter increases the flow path resistance during the recording operation, it is difficult to maintain the inside of the recording head at a predetermined negative pressure.
In particular, in a recording device that uses a long recording head (wide line head) and performs a recording operation at high speed, the pressure fluctuation near the nozzles in such a recording head increases, making it difficult to maintain a good recording operation. The recording head extends across the width of the medium to be recorded

Method used

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  • Liquid ejection head, liquid supply apparatus, liquid ejection apparatus, and liquid supply method
  • Liquid ejection head, liquid supply apparatus, liquid ejection apparatus, and liquid supply method
  • Liquid ejection head, liquid supply apparatus, liquid ejection apparatus, and liquid supply method

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no. 1 approach

[0035] Figure 1 to Figure 1 0 is an explanatory diagram of the first embodiment of the present invention.

[0036] figure 1 It is a schematic front view illustrating a configuration example of the ink discharge device (liquid discharge device) of the present invention. The ink discharge device of this example is a recording device configured to record an image on recording paper (recording medium) P using six liquid discharge heads 11 . The ink discharge device of this example is composed of a reset unit 12 corresponding to each discharge head 11, an ink cartridge 13 for storing ink (liquid) supplied to each discharge head 11, a transport unit 14, an operation panel unit 15, a paper feed unit 16, and the like. The recording paper P is fed from the paper feeding unit 16 to the transport unit 14 , and is transported in the arrow A direction by the transport unit 14 . When the recording paper P moves to a recording position facing each of the discharge heads 11, an image is r...

no. 2 approach

[0070] Figure 11 and FIG. 12 is an explanatory diagram of a second embodiment of the present invention. In these figures, the same symbols are used for the same parts as those in the above-mentioned embodiment, and description thereof will be omitted.

[0071] Similar to the above-mentioned embodiment, the main ink supply chamber (main liquid supply chamber) 42 is formed by wall portions 42A to 42F, and a supply port 43G communicating with the lower wall portion 42B and the common liquid chamber 33 is formed in parallel with Figure 11 in the left-right direction.

[0072] In the present embodiment, an inclined surface inclined at an angle θ1 with respect to the horizontal direction is formed on the upper wall portion 42A, and the inclined surface is inclined upward from the first filter 40 side toward the second filter 41 side. That is, an inclined surface that is not perpendicular to the direction of gravity is formed on the wall portion 42A. By forming the inclined surf...

no. 3 approach

[0075] Fig. 13 is an explanatory diagram of a third embodiment of the present invention. In FIG. 13, the same parts as those in the above-mentioned embodiment are denoted by the same reference numerals, and description thereof will be omitted.

[0076] In this embodiment, on the right side in FIG. 13 of the upper wall portion 42A, a portion (inclined surface) 42A- 1 inclined at an angle θ1 with respect to the horizontal direction is formed. The side is inclined upward toward the side of the second filter 41 . Furthermore, in the part on the left side in FIG. 13 of the upper wall part 42A, a part (inclined surface) 42A- 2 inclined at an angle θ2 relative to the horizontal direction is formed, and this part 42A- 2 is formed from the second filter 41 side. It slopes upward toward the side of the first filter 40 . An apex portion (apex) 42A- 3 located between the first filter 40 and the second filter 41 is formed by these portions 42A- 1 , 42A- 2 .

[0077] If minute air bubble...

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Abstract

The present invention provides a liquid ejection head, a liquid supply apparatus, a liquid ejection apparatus, and a liquid supply method which enable the channel resistance and pressure loss of liquid in the liquid ejection head to be reduced to increase the speed at which liquid is supplied to the nozzles. To achieve this, an ink supply chamber (44) is placed so as to be laminated on a main inksupply chamber (42). A filter (40) interposed between the main ink supply chamber (42) and the ink supply chamber (44) extends along a surface substantially parallel to a nozzle arrangement plane on which a plurality of nozzles are arranged.

Description

technical field [0001] The present invention relates to a liquid discharge head capable of discharging liquid from nozzles, a liquid discharge device for discharging liquid from the liquid discharge head, a liquid supply device for supplying liquid to the liquid discharge head, and a liquid supply method. [0002] As the liquid discharged from the liquid discharge head, various liquids such as ink and liquid medicine can be used. In the case of using ink, an image can be recorded by applying the ink to a recording medium. Background technique [0003] As a conventional liquid supply system for a liquid discharge head, an ink supply system for supplying ink to an ink jet recording discharge head (liquid discharge head), for example, has been improved in response to an increase in recording speed. However, since it is necessary to provide a filter for filtering foreign substances and air bubbles in the ink (liquid) in the flow path, the pressure loss in the filter portion with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J2/175B41J2/14
CPCB41J2202/12
Inventor 向井佳代藤井友裕石永博之园部洋一
Owner COPYER