JPH05112002A - Ink jet cartridge - Google Patents

Abstract

PURPOSE:To provide an ink jet cartridge preventing an ink jet means from damage and clogging and a recording paper from staining. CONSTITUTION:The subject cartridge has an ink jet means consisting of an ink feeding hole 11 jetting ink on a recording paper and being supported by a housing 3 and a nozzle 12, an ink storing part formed in a housing 3 wherein the ink fed to the ink extrusion means is stored and an electrically connecting device feeding electric energy being necessary for extrusion of the ink to the ink jet means and being supported in the housing 3 and the ink jet means is provided on the recessed part being lower than the end face 3a of the housing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet cartridge, and more particularly to an ink jet cartridge in which an ink ejecting means and an ink containing portion in an ink jet recording system and a clogging preventing shutter are integrated.

[0002]

2. Description of the Related Art In recent years, as computers have been downsized from desktop types to laptop types and notebook size types, printers have also been required to be portable and compact. Under these circumstances, disposable ink jet cartridges have been attracting attention as a printer system for laptop and notebook size computers because they are easy to use and the size of the printer can be easily reduced.

A conventional ink jet cartridge will be described below. 7, FIG. 8, FIG. 9 and FIG. 10, 3 is a housing, 3a is an end surface of the housing, 4 is a head having an ejection means and an electrical connection means 16 for delivering and receiving electric energy, 6 is ink, 8 Is an ink containing portion for containing ink, 11 is an ink supply hole (ejection means) for introducing ink from the ink containing portion 8 to the head 4, 12 is a nozzle (ejection means), and 14 is for removing bubbles and dust in the ink 6. A filter, 15 is a porous material filled with ink 6, 2 is an ink lid of the ink containing portion 8, 17 is an ink droplet ejected from the nozzle 12, 18 is a recording paper, and 19 is a recording paper 18 which supports the recording paper 18 and is not shown. A platen that can rotate in a counterclockwise direction by a driving unit to feed the paper, a pressing plate 21 that presses the recording paper 18 against the platen 19, and a perforation portion 22 of the continuous paper.

The structure of the ink jet cartridge (hereinafter referred to as a cartridge) having the above-described structure will be described below. When the ink 6 filled in the porous material 15 passes through the filter 14 by a capillary force, bubbles and dust are removed. The ink 6 is the ink supply hole 1
1, through the head 4 to flow into the end surface of the nozzle 12. Although not shown, the electrical connection means 1 is connected to the electrical energy supply means 1
Electrical energy is supplied to 6. After that, an ink is realized by implementing a system in which electric energy is converted into thermal energy by an ejection unit of the head 4, for example, an electric-heat conversion unit, and the ink is heated to cause a phase change, thereby causing a rapid pressure fluctuation. 6 is discharged. Nozzle 12
The ejected ink droplet 17 is printed on the recording paper 18 supported by the platen 19. Although not shown, the cartridge is mounted on the carriage inside the printer, and can reciprocate in the longitudinal direction of the plantain 19,
Printing of one line is completed. After the cartridge prints one line, the recording paper 18 is fed by the platen 19.

[0005]

However, in the above-mentioned conventional configuration, since the ink ejecting means (ink supply hole 11 and nozzle 12) is formed in the convex portion from the housing end face 3a, the user may wear the ink 6 or the like and the cartridge may be consumed. When the replacement work is performed, the nozzle 12 is directly touched, and not only the finger is soiled but also dust is attached to the nozzle 12, which may cause clogging. 9 and FIG. 10
As shown in FIG. 2, when the recording paper is folded or bent, and the continuous paper reaches the perforations 22 or the like, the recording paper
However, there is a problem in that the ink 9 comes into contact with the recording paper 19 to cause paper stains.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an ink jet cartridge in which the ink ejection means is prevented from coming into contact with the outside.

[0007]

In order to solve the above problems, the ink jet cartridge of the present invention comprises an ink ejecting means supported by a casing for ejecting ink onto a recording paper,
An ink containing portion formed in the housing for containing the ink to be supplied to the ink ejecting means, and an electric device supported in the housing for supplying the ink ejecting means with electric energy required to eject the ink. Have a means of dynamic connection,
The ink ejecting means is formed as a recess from the end face of the casing.

[0008]

According to the ink jet cartridge of the present invention having the above-mentioned structure, the ink ejecting means can be prevented from coming into contact with the outside when the cartridge is attached by forming the ink ejecting means into the concave portion from the end face of the housing.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An ink jet cartridge according to an embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is a protective lid for protecting the ink ejection means, 2 is an ink lid for sealing the ink containing portion, 3
Is a head, and 4 is a head having an ejecting means and an electrical connecting means 16 for delivering and receiving electric energy. In FIG. 1, only the electrical connecting means 16 is exposed. Reference numeral 5 denotes a blind cover that covers the ejection means and the electrical connection means 16 of the head.
In FIG. 2, 6 is an ink, 7 is a porous material that prevents the flow of the ink 6 and 8 is an ink containing portion that is formed in the housing 3 in a flat and meandering shape. In FIG. 3, 11 is an ink supply hole (ejection means) communicating with the ink containing portion 8, 12 is a nozzle (ejection means) for ejecting ink inside the head 4, and 14 is a filter for removing bubbles and dust. is there. In FIG. 4, 17 is an ink droplet discharged from the nozzle 12,
Reference numeral 18 is a recording paper, and 19 is a platen which supports the recording paper 18 and which can rotate in a counterclockwise direction by a driving means to feed the paper, although not shown. Reference numeral 21 denotes a pressing plate that presses the recording paper 18 against the platen 19.

The structure of the cartridge constructed as described above will be described below. The protective lid 1 covers the peripheral portion of the nozzle 12 in the head 4, and is supported by the housing 3 and the head 4. The protective lid 1 and the housing 3 are made of engineering plastic such as modified polyphenylene oxide or polyethylene terephthalate, which has high chemical resistance and high rigidity. The head 4 is incorporated in the housing 3, and the blind cover 5 electrically connects the peripheral portion of the nozzle 12 to the electrical connection means 16.
Others are blindfolded. As shown in FIG. 2, the ink 6 is continuously filled up to the ink containing portion 8, the ink supply hole 11, and the end surface of the nozzle 12 of the head 4. Bubbles and dust of the ink 6 are removed up to the head 4 by the filter 14 arranged in the ink supply hole 11. Further, a porous material 7 made of urethane resin is arranged to prevent the backflow of the ink 6. The ink lid 2 is made of metal such as stainless steel or resin such as polyimide, and is adhered to the housing 3. The electric connection means 16 of the head 4 is connected to the electric energy supply means on the printer side to enable printing. The principle of printing may be any method such as the electric-heat exchange means and the inverse piezoelectric effect of the piezo as shown in the conventional example, and the detailed description will be omitted. The ink droplets 17 ejected from the nozzles 12 are printed by adhering to the recording paper 18 supported by the platen 19. Although not shown, the cartridge is mounted on a carriage inside the printer and can reciprocate in the longitudinal direction of the platen 19 with printing, thus completing the printing of one line. After printing one line, the recording paper 18 is fed by the platen 19. In this embodiment, since the ink ejecting means is formed as a recess from the housing end face 3a, the recording paper 18 comes into contact with only the housing 3 even when the paper is folded or bent, and when the paper reaches the perforations 22 of the continuous paper, The recording paper 18 does not come into contact with the nozzles 12, and paper stains in which the ink 6 adheres to unnecessary parts are improved.

[0012]

As is apparent from the above description of the embodiments, the ink jet cartridge of the present invention supplies ink to the ink ejection means supported by the casing for ejecting the ink onto the recording paper and the ink ejection means. An ink containing portion formed in the housing for containing the ink, and an electrical connecting means supported in the housing for supplying the ink ejecting means with electric energy necessary for ejecting the ink. The ink ejecting means is configured to be a recess from the end face of the housing, and when the ink ejecting means comes into contact with the outside during mounting, ejection failure is improved, and paper due to bending, bending, or perforation of recording paper is formed. It is possible to provide an excellent inkjet cartridge that can avoid dirt.

[Brief description of drawings]

FIG. 1A is a top view showing the overall configuration of an inkjet cartridge according to an embodiment of the present invention. FIG. 1B is the same as the front view, and FIG.

FIG. 2 (a) is a partially cutaway top view showing the overall structure.

FIG. 3 (a) is a vertical cross-sectional view showing an enlarged view of a nozzle peripheral portion, and FIG.

FIG. 4A is a front view of an inkjet cartridge of a printer using the inkjet cartridge and its peripheral portion. FIG. 4B is a side view of the same.

FIG. 5 is a front view showing the configuration when the continuous paper is used.

FIG. 6 is a front view showing the configuration when a curved recording paper is used.

FIG. 7 is an exploded perspective view showing the overall configuration of a conventional inkjet cartridge.

FIG. 8A is a front view of an inkjet cartridge of a printer using the inkjet cartridge and its peripheral portion; FIG. 8B is a side sectional view of the same.

FIG. 9 is a side view showing the configuration when continuous paper is used.

FIG. 10 is a front view showing the configuration when the curved recording paper is used.

[Explanation of symbols]

 3 Housing 3a End surface of housing 6 Ink 8 Ink storage portion 11 Ink supply hole (ejection means) 12 Nozzle (ejection means) 16 Electrical connection means 18 Recording paper

Front page continuation (72) Inventor Takumi Inoue 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (1)

[Claims] 1. An ink ejecting unit supported by a casing for ejecting ink onto a recording paper, an ink accommodating portion formed in the casing accommodating the ink to be supplied to the ink ejecting unit, and the ink ejecting unit. An ink jet cartridge having means for supplying electric energy required for ejecting the ink, the electric connecting means being supported in the casing, and the ink ejecting means provided in a recess from an end surface of the casing.