WO2007104250A1

WO2007104250A1 - An ink cartridge

Info

Publication number: WO2007104250A1
Application number: PCT/CN2007/000772
Authority: WO
Inventors: Yonggang He; Yongzhong Tian
Original assignee: Print-Rite Technology Development Co. Ltd Of Zhuhai
Priority date: 2006-03-16
Filing date: 2007-03-12
Publication date: 2007-09-20
Also published as: CN2871203Y

Abstract

An ink cartridge comprises: a cartridge body, used for containing ink and provided with an ink outlet; a cartridge cover, used for sealing the cartridge body and provided with overflow cushion chambers in it; the first air inlet, communicating surrounding air with the overflow cushion chambers; and the second air inlet, communicating the overflow cushion chambers with the cartridge body, wherein the number of the overflow cushion chambers is at least two, and these chambers communicate with each other by a passage provided on the upper part of the cartridge cover. It has many advantages such as a better effect for introducing air and preventing ink overflow.

Description

Technical field

The present invention relates to an ink cartridge for an ink jet printer. The present invention is based on a Chinese utility model patent application filed on March 16, 2006, with the application number of 200620008492. X, the contents of which are incorporated herein by reference. Background technique

At present, an ink cartridge used in an ink jet printer is formed by welding an ink cartridge body having an ink outlet port and a cartridge cover for sealing the ink cartridge body, and ink is injected into the ink chamber between the ink cartridge body and the ink cartridge cover. An air inlet opening communicating with the inside and outside of the ink cartridge is also formed. When the printer is working, the ink in the ink cartridge of the printer is sucked out from the ink outlet by the negative pressure of the ink suction port of the printer to realize inkjet printing, and air enters the ink cartridge from the air inlet hole, and the ink is replenished in the ink chamber. The resulting negative pressure reaches the pressure balance.

ZL 200520002528. No. 9 Chinese utility model patent discloses an ink cartridge overflowing air inlet device, which is provided with two overflow buffer chambers in the interlayer of the ink cartridge cover, the gas enters the first overflow buffer chamber from the top, and then from the second The bottom or side of the overflow buffer chamber enters the cartridge body. A partition plate is disposed between the first and second overflow ink buffer chambers, and the partition plate is provided with through holes so that they communicate with each other. A porous sponge is also placed in the overflow buffer chamber to absorb the overflowed ink.

The ink cartridge having the above-mentioned anti-overflow air intake device can prevent ink overflow in the ink cartridge to a certain extent, but the communication hole between the two overflow ink buffer chambers is disposed on the partition plate, and the overflowed ink is not filled with the second overflow. When the ink buffer chamber or the porous sponge not disposed in the second overflow buffer chamber is completely adsorbed, the overflowed ink may flow into the first overflow buffer chamber and overflow from the top of the first overflow buffer chamber. The space of the overflow ink buffer chamber and the adsorption capacity of the porous sponge in the overflow buffer chamber are not good. Summary of the invention

The main object of the present invention is to provide an ink cartridge having a good anti-overflow and air guiding effect.

In order to achieve the above object, the ink cartridge provided by the present invention comprises: an ink cartridge body for accommodating ink, and an ink outlet; an ink cartridge cover for sealing the ink cartridge body, an ink overflow buffer chamber inside; a hole connecting the outside atmosphere and the overflow ink buffer cavity; a second air inlet hole connecting the overflow ink buffer cavity and the ink cartridge body, wherein

1

Confirmation There are at least two overflow ink buffer chambers which communicate with each other through a passage provided in the upper portion of the ink cartridge cover.

A better solution is to place an ink absorbing material in the overflow buffer chamber, which can absorb the overflowed ink and have better anti-overflow effect.

Another preferred solution is to place a waterproof and breathable material in the overflow buffer chamber to enhance the resistance to the ink. DRAWINGS

1 is a schematic structural view of an ink cartridge of a first embodiment;

Figure 2 is a schematic view showing the assembly of the ink cartridge cover of the first embodiment;

Figure 3 is a plan view showing the cover of the ink cartridge cover of the ink cartridge of the first embodiment;

Figure 4 is a bottom plan view of the cover of the ink cartridge cover of the ink cartridge of the first embodiment;

Figure 5 is a schematic view showing the structure of the ink cartridge cover of the ink cartridge of the second embodiment;

Figure 6 is a schematic view showing the structure of an ink cartridge cover of the ink cartridge of the third embodiment.

The invention is further described below in conjunction with the drawings and specific embodiments. detailed description

First Embodiment - Referring to Fig. 1, an ink cartridge 1 includes an ink cartridge body 2 containing ink, and an ink outlet 3 is provided at a lower portion thereof, and a top portion is sealed by a cartridge cover 4. For the sake of clarity of explanation, the cover is omitted in each of the figures in this example. Referring to FIG. 2, the ink cartridge cover 4 includes a cover 41 and a thin member 42. On the lower surface of the cover body 41 (shown as the upper surface in FIG. 2), a protruding fence 411 is formed which is higher than the cover body 41. The fence 411 is partitioned into three parts by partitions 412 and 413 to form an ink overflow buffer chamber 51. 52, 53, wherein the ink absorbing buffers 51, 53 are provided with ink absorbing materials 61, 62. The thin member 42 may be bonded or thermally welded to the fence 411 to seal the ink overflow buffer chambers 51, 52, 53. The thin member may be a sealing film or a plastic sheet or the like.

The air guiding direction of the ink cartridge will be described in detail below with reference to Figs. 3 and 4. The outside atmosphere passes through the meandering air guiding passage 43 provided on the upper surface of the cover body 41, enters the overflow ink buffer chamber 51 from the first air inlet hole 414 in the direction of the arrow a, and then passes through the ink overflow buffer chamber 51 in the directions of arrows b and c. Inner air guiding hole 511, provided in the cover body The channel 416 of the upper surface of the 41, the air guiding hole 521 provided in the ink overflow buffer chamber 52 enters the ink overflow buffer chamber 52, and then passes through the ink overflow buffer chamber 52 in the direction of the arrow (3, e, f, g). The air guiding hole 522, the passage 417 provided on the upper surface of the cover 41, the air guiding holes 531 and 532 provided on the partition 413, the passage 418 provided on the upper surface of the cover 41, and the air guiding hole provided in the overflow buffer chamber 53 533 enters the overflow ink buffer chamber 53, and finally passes through the air guiding hole 534 provided in the ink overflow buffer chamber 53 in the direction of the arrow h, i, the passage 419 provided on the surface of the cover body 41, and the second air inlet provided on the cover body 41. A hole 415, a hole 421 (see Fig. 2) provided on the thin member 42, flows into the inside of the ink cartridge body 1.

'When the ink cartridge 1 overflows due to movement or environmental changes, the overflowed ink will flow in the opposite direction to the above-mentioned air guiding direction, that is, first overflow into the overflow ink buffer chamber 53, and then overflow into the overflow ink buffer chamber. 52, 51. Since the communication holes of the three overflow buffer chambers are all communicated through the passage provided on the surface of the cover body 41, only when an overflow ink buffer chamber is filled with ink, the next overflow ink buffer chamber overflows, and the overflow is fully utilized. The space inside the ink buffer cavity effectively prevents the ink from overflowing.

Further, the ink adsorbing materials 62, 61 placed in the overflow buffer chambers 51, 53 can also sufficiently exert the absorbing action to further block the ink from flowing out.

Second embodiment:

Referring to Fig. 5, the structure of the ink cartridge cover 4 of the ink container of this embodiment is substantially the same as that of the first embodiment, wherein the same structure is denoted by the same reference numeral in this embodiment. This embodiment differs from the first embodiment in that a protruding fence 411 is provided on the upper surface of the cover 41, and the middle of the fence 411 is partitioned into three parts by partitions 412, 413 to form an ink overflow buffer chamber 51, 52, 53, wherein Water-repellent and permeable materials 71, 72 are provided in the overflow ink buffer chambers 51, 53. Channels 416, 417, 418 (not shown), 419, which connect the overflow ink buffer chambers 51, 52, 53 and the second air inlet holes 415, are provided on the lower surface of the thin member 42, and the film 8 is attached to the upper surface of the thin member 42. .

Third embodiment:

Referring to Fig. 6, the structure of the ink cartridge cover 4 of the ink cartridge of this embodiment is substantially the same as that of the first embodiment, wherein the same structure is denoted by the same reference numeral in this embodiment. This embodiment is different from the first embodiment in that the first air inlet hole 414 is provided at the side of the cover body 41, and two different ink adsorbing materials 611, 612, 621 are respectively placed in the ink overflow buffer chambers 51, 53. 622, the film 8 is attached to the upper surface of the thin member 42, forming a part of the channels 416, 417.

The ink cartridge of the invention designs a plurality of ink spills on the ink cartridge cover by rationally utilizing the structure of the ink cartridge cover Punching the cavity, arranging different flow channels and placing different leak-proof materials can effectively block the capillary phenomenon of the ink while maximizing the efficiency of the leak-proof material, and well prevent the ink from overflowing.

The variation based on the present invention is not limited to the above embodiment, and various changes may be made, such as the first air intake hole being provided on the thin member, or the ink adsorbing material and the waterproof gas permeable material being placed simultaneously in the overflow ink buffer chamber, etc. The effect achieved is the same. These simple structural changes are still within the scope of protection required by the present invention. Industrial applicability

According to the ink cartridge of the above aspect, since the overflow ink buffer chamber communicates with the passage provided in the upper portion of the ink cartridge cover, the overflowed ink continues to flow into the next ink overflow buffer chamber only after being filled in an overflow ink buffer chamber. Increased blocking of spilled ink.

Claims

Claim

1, ink cartridges, including

An ink cartridge body for accommodating ink, which is provided with an ink outlet;

The ink cartridge cover is used for sealing the ink cartridge body, and an ink overflow buffer chamber is arranged inside;

a first air inlet hole connecting the external atmosphere and the overflow ink buffering chamber;

a second air inlet hole communicating with the ink overflow buffer chamber and the ink cartridge body;

It is characterized by:

The overflow ink buffer chamber has at least two, and is connected to each other through a channel provided at an upper portion of the ink cartridge cover

2. The ink cartridge according to claim 1, wherein:

At least one of the overflow buffer chambers is internally provided with a hydrophobic adsorbent material.

3. An ink cartridge according to claim 1, wherein:

At least one of the overflow buffer chambers is internally provided with a waterproof gas permeable material.

4. The ink cartridge according to claim 1, wherein:

The first air inlet hole is provided at a side of the ink cartridge cover.

5. The ink cartridge according to claim 1, wherein:

The ink cartridge cover includes a cover body having a protruding fence on one side thereof to form the overflow ink buffer cavity;

a thin member for sealing the overflow buffer chamber.

6. The ink cartridge according to claim 5, wherein:

The passage is provided on an upper surface of the cover.

7. The ink cartridge according to claim 5, wherein:

The passage is provided on an upper surface of the thin member.