JPS62158054A - Ink jet recorder - Google Patents

Abstract

PURPOSE:To prevent the outflow of ink and the mixture of bubbles and to make the installation and removal of an ink feed system possible, by using the connector in which a rubber stopper and a needle are used in the way of an ink feed path. CONSTITUTION:The ink 3 in an ink feed tube 1 and a connector 2 is hermetically sealed with a rubber stopper 4 to prevent the mixture of bubbles. The protective cover 8 energized by a spring 9 is attached to the injection needle 5 fitted to a connector base 7. A connector 2 is inserted into the connector base 7 with the rubber stopper 4 turned downward, and the injection needle 5 is inserted into the rubber stopper 4 while pushing the protective cover 8 down with the bottom surface. The needle 5 bores a hole into the rubber stopper 4 and an ink feed path is secured. Even if the connector 2 is extracted from the connector base 7 in head exchanging time, the hole of the rubber stopper 4 is closed and the outflow of the ink 3 and the mixture of bubbles in the ink feed tube 1 are prevented.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an inkjet recording device.

[Conventional technology]

In recent years, with the spread of office automation, the demand for creating and printing documents in offices has increased, and printers with low noise and good print quality are in demand. Furthermore, with the spread of personal computers, there is an increasing demand for outputting characters and graphics on color displays in color. In recent years, efforts have been made to put inkjet printers and color inkjet printers into practical use as printers that meet these demands.

Conventionally, in inkjet printers, ink is supplied to the inkjet head by mounting an ink tank connected to the inkjet head on a carriage, or from an ink tank placed in the device by an ink supply tube to an inkjet jet on the carriage. A method of supplying the liquid to the head is used.

[Problem that the invention seeks to solve]

Although the ink supply method using an ink supply tube makes it easy to recover from air bubbles entering the ejection nozzle, it is difficult to attach and detach the ink supply tube when replacing the inkjet head or adjusting the device. There are drawbacks such as air bubbles being mixed in when attaching and detaching. Particularly in color inkjet printers, there are a plurality of ink supply tubes, so it is not easy to attach and detach them.

The present invention provides an inkjet recording device in which an ink supply tube can be easily attached and detached while preventing air bubbles from entering the inkjet recording device.

[Means for solving problems]

The present invention is an ink jet recording apparatus characterized in that a self-container, which is a combination of a rubber stopper and an injection needle inserted into the rubber stopper to secure a passage, is installed in the middle of an ink supply path.

〔Example〕

Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows an ink supply connector in one embodiment of the present invention. The ink supply tube 1 is connected to a connector 2, and the other end is connected to an inkjet head (not shown). The ink 3 in the ink supply tube 1 and the connector 2 is sealed with a rubber stopper 4 that is resistant to liquid contact to prevent air bubbles from entering.

FIG. 2 shows an ink supply connector base, and an ink supply tube 6 is connected to an injection needle 5 attached to the connector base 7 from an ink tank (not shown). A protective cover 8 biased by a spring 9 is attached to the injection needle 5.

FIG. 3 shows a state in which the ink supply connector 2 and the ink supply connector base 7 are connected. That is, the connector 2 is inserted into the connector base 7 with the rubber stopper 4 facing downward, and the injection needle 5 is inserted into the rubber stopper 4 while pushing down the protective cover 8 on the bottom surface, and the needle 5 makes a hole in the rubber stopper 4. , secure the ink supply path.

Even when the connector 2 is pulled out from the connector base 7 when replacing the head, the hole in the rubber stopper 4 is closed, preventing the ink 3 in the ink supply tube 1 from flowing out and air bubbles from entering.

Even when using multiple ink supply channels, by using multiple rubber plugs 4 and needles 5 in the same connector,
Multiple ink paths can be attached and detached at the same time.

〔Effect of the invention〕

As explained above, the present invention uses a connector using a rubber stopper and a needle in the middle of the ink supply path to prevent ink from flowing out and air bubbles from entering, and allows multiple ink supply systems to be easily attached and detached. There is an effect that

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing an ink supply connector of the present invention;
FIG. 2 is a longitudinal sectional view showing the ink supply connector base, and FIG. 3 is a sectional view showing the state in which the ink supply connector and the ink supply connector base are joined. l...Ink supply tube 2...Connector 3...
・Ink 4...Rubber stopper 5...Needle
6...Ink supply tube 7...Connector base 8...Protective cover 9...Spring Patent applicant NEC Corporation Same as above NEC Engineering Co., Ltd. Same tube as above Figure 2

Claims (1)

[Claims] (1) An inkjet recording apparatus characterized in that a connector combining a rubber stopper and an injection needle inserted into the rubber stopper to secure a passage is installed in the middle of an ink supply path.