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Liquid jetting device

A technology of jetting device and liquid jetting head, which is applied in the direction of measuring device, sampling, printing, etc., and can solve problems such as hindering ink jetting

Inactive Publication Date: 2006-05-10
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This affects to some extent the meniscus of the ink generated in the nozzle, thereby hindering the desired ink ejection of the ink recording apparatus 100

Method used

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  • Liquid jetting device
  • Liquid jetting device
  • Liquid jetting device

Examples

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no. 1 example

[0041] The following will refer to figure 1 A first embodiment of the present invention is described up to FIG. 4 .

[0042] Such as figure 1 As shown, a printer 1 serving as a liquid ejecting device includes a substantially parallelepiped frame 2 . A paper feed tray 3 is formed on the upper surface of the frame 2 , and a paper output tray 4 is provided on the front surface of the frame 2 . Each of the paper feed tray 3 and the paper output tray 4 is configured to be accommodated in the frame 2 in a state of being folded with an unillustrated hinge mechanism.

[0043] The deck 5 extends longitudinally in the frame 2 . Recording paper is inserted into the frame 2 via a paper feed tray 3 and supplied to a platen 5 by a paper feed mechanism not shown. Then, the recording paper is conveyed from the frame 2 to the outside via the paper output tray 4 .

[0044] A guide member 6 is provided in the frame 2 and extends parallel to the platen 5 . The carriage 7 is supported by a...

no. 2 example

[0071] The following will refer to Figure 5 and Figure 6 A second embodiment of the present invention is described.

[0072] In the second embodiment, similar to the check valve 14 of the first embodiment, the check valve suppresses the backflow of waste ink and air to the cap member 12 . The check valve of the second embodiment differs from the check valve 14 of the first embodiment in terms of the installation position relative to the frame 2 of the printer 1 . Thus, the configuration of the check valve of the second embodiment is modified accordingly. Therefore, the following description focuses on the differences between the first embodiment and the second embodiment. The same or similar reference numerals are used to designate the same or similar parts of the second embodiment as the corresponding parts of the first embodiment.

[0073] Such as Figure 5 As shown, the gear pump GP is connected to the cover member 50 through a check valve 51 and a tube T13. The fir...

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Abstract

To clean the recording head, the printer seals the nozzles with a cap member, thus forming a closed circulation system. In this state, the gear pump is activated to suck waste liquid and air from the cover member. Then, waste ink and air are introduced into the first ink tank by sequentially flowing in the cap member, the check valve, the tube, the gear pump, and a different tube. Air is introduced into the second ink tank as pressurized air through a corresponding tube. A check valve prevents waste ink and pressurized air from returning to the cover assembly. This suppresses backflow of liquid and air, and ink ejection is efficiently performed.

Description

technical field [0001] The present invention relates to liquid ejection devices. Background technique [0002] Conventionally, an inkjet recording device is collectively referred to as a type of liquid ejection device. Inkjet recording devices include "off-carriage" types in which an ink holder is connected to a recording head via an ink supply tube. The ink holder is provided in an ink tank as an ink container. The ink holder is pressurized with pressurized air introduced into the ink cartridge, for example by a pump. This causes the ink in the ink holder to be sent to the recording head through the ink supply tube, so that the recording head is supplied with ink. Then, the ink is ejected from the nozzles of the recording head toward the recording paper as ink droplets for recording characters or images. [0003] Typically, when it is necessary to prevent ink ejection problems, the inkjet recording apparatus performs cleaning that discharges air bubbles or ink with incr...

Claims

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Application Information

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IPC IPC(8): B41J2/18G01N1/00G01N35/10
Inventor 岩崎充孝
Owner SEIKO EPSON CORP
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