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Ink jet recording head and its mfg. method

A technology of inkjet recording and ink, which is applied in the field of inkjet recording head, and can solve the problems of long drying time, poor printing, difficult to remove, etc.

Inactive Publication Date: 2003-12-10
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, if the buffer chamber is intruded with garbage in advance, it will be difficult to remove during the cleaning process, so the garbage will enter the flow path during use, resulting in poor printing caused by the remaining dust.
[0006] In addition, drying after washing also takes a long time

Method used

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  • Ink jet recording head and its mfg. method
  • Ink jet recording head and its mfg. method
  • Ink jet recording head and its mfg. method

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Experimental program
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no. 2 Embodiment approach

[0044] Next, a second embodiment of the present invention will be described using the drawings. 8 is an exploded perspective view of a liquid discharge head unit according to a second embodiment of the present invention, Figure 9 Shown is a schematic sectional view of the liquid discharge unit and liquid container holder unit.

[0045] As shown in FIG. 8 , in the inkjet recording head according to the present embodiment, the buffer chamber 25 is not connected to the liquid supply port 22 , but both sides are penetrated. In this way, the cleaning of the buffer chamber 25 can be made easier, and the metal mold for forming the frame 20 becomes simpler. The opening 25(b) of the buffer chamber 25 can be sealed with the sealant in the assembling process of the liquid discharge head unit described above to form a space as a buffer chamber. The sealing step is an ordinary step in assembling the liquid discharge head unit, and there is no need to add a special step to the sealing of...

no. 3 Embodiment approach

[0048] Figure 10 ~ Figure 12 Shown is a schematic exploded perspective view of the structure of the ink jet recording head according to the third embodiment of the present invention. The recording head mounted on the inkjet recording head H1001 is a recording head of the bubble jet (registered trademark) method using an electrothermal transducer that generates thermal energy for causing film boiling of ink in response to an electrical signal. An inkjet recording head of a so-called side-emission type in which an electrothermal transducer and an ink discharge port are arranged to face each other. In this embodiment, an electrothermal transducer is used, but it is also an effective device for an inkjet recording head that ejects ink using a piezoelectric element that converts an electrical signal into a pressure vibration.

[0049] Such as Figure 10 As shown in the exploded perspective view of , the inkjet recording head H1001 is composed of a liquid ejection head unit H1002...

no. 4 Embodiment approach

[0064] Figure 15 Shown is a schematic sectional view of an inkjet recording head according to a fourth embodiment of the present invention, in which the formation positions of bubble buffer chambers H1204(a) and H1204(b) are different from those of the inkjet recording head according to the third embodiment. constitute. The same reference numerals are assigned to the same components as those in the third embodiment, and description thereof will be omitted. Figure 15 Among them, bubble buffer chambers H1204(a) and H1204(b) are formed on the first board H1200 and close to the center of the recording element substrate to increase the distance from the bonding surface of the recording element substrate H1100 and the first board H1200. In order to improve the recoverability when the ink is suctioned and returned by a printing device (not shown), it is configured to extend from the connection portion with the liquid container holder unit H1003 to the recording element substrate H...

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PUM

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Abstract

An ink jet recording head includes a liquid discharge head unit having discharge ports and ink flow paths; a liquid container holder unit capable of holding liquid containers and having supply paths for supplying liquid to the liquid discharge head units; and a buffer chamber for allowing gas to exist in the liquid supply paths, the buffer chamber being formed by coupling the liquid discharge head to the liquid supply holder unit. The ink jet recording head enables the buffer chamber allowing to gas to exist to be sufficiently cleaned, and requires no additional process for the formation of the buffer chamber thereof. Furthermore, the ink jet recording head can inhibit ink oscillations in flow paths during ink discharge to keep a stable discharging state, thereby acquiring a high-quality image at all times.

Description

technical field [0001] The present invention relates to an inkjet recording head that discharges ink to record on a recording medium such as paper or cloth, a printing device using the recording head, and a method for manufacturing the recording head. Background technique [0002] Conventional printing devices such as printers, copiers, and facsimile machines are configured to record an image composed of a dot pattern on a recording material based on image information. The above-mentioned printing device can be divided into inkjet type, stylus dot matrix type, heat sensitive type, laser beam type, etc. according to its printing method. Utilize the energy conversion device that can generate discharge energy, the ink is introduced into the above-mentioned liquid passage from the ink supply port through the liquid chamber, and here, the ink is made to fly to the recording material as a flying droplet by utilizing the discharge energy given to the ink by the energy conversion de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/05B41J2/055B41J2/14B41J2/16B41J2/175
CPCB41J2/14145B41J2/17553B41J2/055B41J2/14024
Inventor 大桥哲也小泉宽山口裕久雄木上博之后藤显
Owner CANON KK