WO2007012258A1

WO2007012258A1 - An ink cartridge provided with a pressure adjusting chamber

Info

Publication number: WO2007012258A1
Application number: PCT/CN2006/001667
Authority: WO
Inventors: Jun Li
Original assignee: Jun Li
Priority date: 2005-07-23
Filing date: 2006-07-13
Publication date: 2007-02-01
Also published as: CN1899830A

Abstract

The present invention discloses an ink cartridge comprised of an ink chamber and a first air passage. The ink chamber is provided with an ink outlet. One end of the first air passage is communicated with the atmosphere. The ink cartridge further comprises a pressure adjusting chamber and a second air passage. The pressure adjusting chamber is communicated with the other end of the first air passage. One end of the second air passage is communicated with the pressure adjusting chamber and the other end of it is communicated with the gas in the ink chamber.

Description

Ink tank with pressure regulating chamber

Technical field

The present invention relates to an ink cartridge for use in a digital signal pattern output device, and more particularly to an ink cartridge provided with a pressure regulating chamber. Background technique

Digital signal graphic output devices such as ink jet printers, facsimile machines, copiers, etc., usually use a removable ink cartridge and cooperate with it to form an image on the medium. The ink cartridge requires the ink supply pressure to be stabilized within a certain range. At present, the ink supply pressure of the ink tank is stabilized by filling a non-rigid material having a capillary force (e.g., sponge, fiber cotton, etc.) in the ink chamber of the ink cartridge and a check valve on the ink discharge passage.

The above-mentioned ink cartridge using a non-rigid material having capillary force has the greatest drawback that the amount of ink remaining in the ink cartridge is quite large when the ink cartridge is unusable, and the ink cartridge has the ink cartridge when it is produced or used. Capillary non-hard materials cannot be recycled and reused, which causes considerable harm to the environment. Another type of ink cartridge using a one-way valve is greatly improved in terms of environmental protection, but the manufacturing precision and assembly precision of the one-way valve are quite high, and it is difficult to control the quality of the product in mass production, resulting in a high manufacturing cost of the product. .

An ink cartridge disclosed in Chinese Patent No. CN03146636.2, the ink cartridge comprising: an ink containing portion for holding ink; an air passage for connecting the ink containing portion to the atmosphere; and a valve mechanism Provided in the air passage, the valve mechanism includes an air release valve member for sealing a communication hole provided in the partition wall, the partition wall being accommodated along the ink from a side close to the ink containing portion Partially separating the ink accommodating portion side from the air side in a direction toward the atmospheric side on the air side, wherein the air dry valve member has a contact portion that can be used to receive from the atmosphere side An external force to the side of the ink containing portion opens the air passage. However, the ink cartridge disclosed in the Japanese Patent No. CN03146636.2 adopts two check valve structures of an ink check valve and an air check valve, which not only makes the manufacturing cost of the ink cartridge high, but also makes other structures of the ink cartridge follow the one-way. The structure of the valve becomes more complicated; in addition, these complicated structures also make it difficult to effectively ensure the manufacturing precision, thereby hindering the technical orientation.

1

Confirmation General SME promotion and application. Summary of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to provide an ink cartridge which is capable of both the existing ink cartridge structure and manufacturing process and the environmental protection requirements.

In order to achieve the object of the present invention, the present invention provides an ink cartridge including a top wall, a bottom wall, a front wall, a rear wall, a left side wall, a right side wall, an ink chamber, and a first air passage, and an ink chamber An ink outlet is provided, one end of the first air passage is in communication with the atmospheric gas, wherein the ink tank further comprises a pressure regulating chamber and a second air passage, the pressure adjusting chamber is in gas communication with the other end of the first air passage, and the second air passage is One end is in gas communication with the pressure regulating chamber, and the other end of the second air passage is in gas communication with the ink chamber.

The first air passage includes a first communication port and a second communication port, and the second air passage includes a third communication port and a fourth communication port, where the first communication port is a communication port between the atmosphere and the first air channel, The second communication port is a communication port between the first air passage and the pressure adjustment chamber, the third communication port is a communication port between the pressure adjustment cavity and the second air passage, and the fourth communication port is a second air passage and an ink chamber. The communication port between.

For convenience of description, the spatial orientation of the ink tank is defined, and each structure is introduced along the flow direction of the air. The ink tank includes a top wall, a bottom wall, a front wall, a rear wall, a left side wall, and a right side wall, and the pressure The adjustment chamber is located below the ink chamber and the fourth communication port is located at the bottom of the ink chamber.

Specifically, the second communication port is disposed at a middle upper portion of the pressure adjustment cavity, the third communication port is disposed at a middle and a lower portion of the pressure adjustment cavity, and a height difference between the second communication port and the third communication port in a vertical direction is 1~ 20 mm.

Preferably, the second communication port is disposed in the pressure adjustment chamber near the top wall of the pressure adjustment chamber and substantially in the middle of the pressure adjustment chamber, and the third communication port is disposed in the pressure adjustment chamber near the bottom wall of the pressure adjustment chamber. And close to the left side wall of the pressure regulating chamber.

In order to prevent the ink from flowing back from the air passage or the ink from freely overflowing from the ink outlet, the height difference between the fourth communication port and the ink outlet in the vertical direction is between 5 and 30 mm, preferably less than 25 mm. The opening area of the fourth communication port is between 0.2 and 5 square meters, preferably less than 3 square millimeters. Preferably, the first air passage includes at least one elongated passage prior to entering the pressure regulating chamber, the elongated passage having a passage cross-sectional area of between 0.1 and 1 square millimeter.

Preferably, the second air passage includes at least one elongated passage after exiting the pressure regulating chamber, the elongated passage having a passage cross-sectional area of between 0.1 and 1 square millimeter.

The elongate channel may be straight. Preferably, the elongate channel of the first air channel and/or the second air channel is provided with one or more tortuous turns in the spatial direction, and may even form a plurality of return paths. Alternatively, the elongated passage of the first air passage is provided with a bending return path, and the elongated passage of the second air passage is not provided with a bending return path. For example, the elongated passage of the first air passage starts from the upper portion of one end of the pressure regulating chamber on the rear wall of the ink tank, and is downward along the height direction of the pressure regulating chamber (ie, perpendicular to the top wall and the bottom wall of the ink tank) Extending, when approaching the bottom wall of the ink tank, is bent to extend a distance along the width direction of the pressure regulating chamber (ie, perpendicular to the left and right side walls of the ink tank), and then bent into a pressure regulating chamber The height direction extends upwardly and is bent to extend along the width direction of the pressure regulating chamber when approaching the top wall of the pressure regulating chamber, and extends to the other end of the pressure regulating chamber.

Specifically, the elongated passages of the first air passage and the second air passage are respectively disposed at upper and lower portions of the rear wall of the pressure regulating chamber, and the elongated end of the first air passage and the leading end of the elongated passage of the second air passage An extension hole is provided at each end and the tail end.

Preferably, an inlet passage, an inlet chamber, a slot passage and a first conducting chamber are further disposed between the first communication port and the elongated passage of the first air passage, and are adjacent to the top wall of the ink tank in the inlet chamber and substantially in the inlet chamber a boss is protruded from a central portion of the top wall, and an inlet passage is opened in the center of the boss

Air flows through the inlet passage, the inlet chamber, and the slot passage from the first communication port and then enters the first conduction chamber.

Wherein the opening position of the slot passage into the first conducting chamber is away from the top wall of the pressure regulating chamber and close to the front wall of the ink tank, and the elongated passage of the first air passage leaves the opening position of the outlet of the first conducting chamber Near the top wall of the pressure regulating chamber and close to the back wall of the ink tank.

Preferably, a second conducting chamber is disposed between the elongated passage of the second air passage and the fourth communicating port, and the elongated passage of the second air passage enters the opening of the second conducting chamber at a position close to the bottom of the ink tank The wall is adjacent to the rear wall of the ink tank, and the fourth communication port is located away from the bottom wall of the ink tank and close to the front wall of the ink tank. The elongated passage may be a narrow passage of a polygonal cross section or a circular cross section, and the leading end and the trailing end of the elongated passage are respectively disposed perpendicular to the center line direction of the elongated passage and extending along the thickness direction of the ink tank (ie, perpendicular to the ink tank) The direction of the front wall and the rear wall) extends the hole.

An extended hole at a first end of the elongated passage of the first air passage communicates with the first conductive chamber, and an extended hole provided at a tail end of the elongated passage of the first air passage communicates with the pressure regulating chamber, thereby being in the pressure regulating chamber The upper portion of the rear wall forms a second communication port.

An extension hole provided at a leading end of the elongated passage of the second air passage communicates with the pressure regulating chamber, thereby forming a third communication port at a lower portion of the rear wall of the pressure regulating chamber. An extended hole provided at a rear end of the elongated passage of the second air passage communicates with the second conductive chamber.

In addition, a sealing cover is further provided, and the sealing cover is detachably mounted on the ink outlet, and the sealing cover can be correspondingly pierced by the printing head of the printer. Alternatively, the sealing cap has a thinner end face that can be inserted into the ink cartridge by breaking the thin end face of the printer when the ink cartridge is used. Alternatively, the sealing cover is made of a resilient resin or rubber material, and the sealing cover is tightly fitted with the cylindrical surface of the ink outlet of the ink tank to form a liquid seal and a gas seal.

Further, a chip holder is detachably mounted on the left side wall or the right side wall of the ink tank.

Further, a resilient arm is provided on the left side wall or the right side wall of the ink tank.

The ink cartridge of the present invention comprises a body, a front wall cover and a rear wall film. After the body is formed into various structures, the front side surface of the body and the rear side surface of the body are respectively closed by the front wall cover and the rear wall film, thereby forming the present invention. Various connected channels.

Alternatively, the ink cartridge of the present invention may employ other space-shaped narrow first air passages or second air passages which are bendable to the ink tank in the up, down, left and right or front and rear directions.

When the ink cartridge is placed with the front wall facing up, since the second conductive chamber between the ink chamber and the pressure regulating chamber is provided with an extending hole extending in the thickness direction of the ink cartridge, the ink does not substantially flow into the pressure regulating chamber; The first conducting chamber of the first air passage is also provided with an extending hole extending in the thickness direction of the ink tank to substantially prevent ink from entering the inlet chamber.

When the ink tank is placed with the top surface facing up, the bent air passage of the first air passage can substantially prevent ink from entering the first conductive chamber; in addition, the air inlet of the ink chamber is designed in the lower left corner of the ink tank. It is possible to prevent ink from flowing into the pressure regulating chamber.

Alternatively, the first air passage includes an elongated bent passage, and the second communication port is The top wall of the pressure regulating chamber conducts the elongated bending passage and the pressure regulating chamber, the third communication port is disposed on the left side wall of the pressure regulating chamber and close to the bottom wall of the pressure regulating chamber, and the third communication port directly passes through the second guiding The through chamber is electrically connected to the fourth communication port.

Another technical solution of the present invention is to provide a combined ink cartridge in which two or more ink cartridges of the present invention are laminated and integrated into one unit.

According to still another aspect of the present invention, an ink cartridge is provided. The ink cartridge includes an ink chamber and an air passage. The ink chamber is provided with an ink outlet, and the ink outlet is sealed by a detachable sealing cover. The gas tank further includes a pressure regulating chamber and a switching valve. The pressure regulating chamber is in gas communication with the other end of the air passage, and the switching valve is opened before the installation is used, and the ink chamber is electrically connected to the pressure regulating chamber. The working mode and principle are the same as the first scheme. In order to make the mold manufacturing and production process more simple, a switch valve can be opened between the ink chamber and the pressure regulating chamber before the ink cartridge is installed, so that The narrow passage and the curved structure portion of the first air passage and the second air passage in the first scheme can be omitted, and the use of the rear wall membrane can be eliminated.

The invention has the beneficial effects that the ink supply function of the existing ink cartridge is realized by using simple structural features, thereby avoiding the use of the ink supply check valve and the air supply check valve with high precision, which saves cost and reduces The waste of resources, while avoiding environmental pollution, making the manufacturing process of the ink cartridge simple, effectively reducing the market price of the ink cartridge; the structural features of the ink cartridge of the present invention enable the ink filling and packaging of the ink cartridge Can be carried out under positive pressure conditions, reducing manufacturing requirements and costs; Since the air replenishment of the ink tank enters the ink chamber in the form of negative pressure suction, when the external ambient temperature rises, the air in the ink chamber is caused. The expansion causes the pressure in the ink chamber to increase, and the ink in the ink chamber flows into the pressure regulating chamber until the pressure in the ink chamber reaches a relative equilibrium, and the ink is not pushed in due to the pressure increase in the ink chamber. Leaking ink into the print head of the printer; in addition, the first air passage and the second air passage are respectively provided with elongated passages, extending holes, a conducting chamber, and a structure such as a boss, an inlet chamber, a slot channel, and the like in the air passage, so that the entire air passage becomes a three-dimensional zigzag shape which is spatially up, down, left and right, and curved back and forth, and therefore, is not used up. The ink cartridge of the ink is placed in any direction after the digital signal output device is taken out, and the ink ice does not flow out of the ink cartridge; and, by adjusting the relative height of the fourth communication port and the ink outlet, the ink chamber can be adjusted. The role of internal pressure, according to this way can be manufactured to suit a variety of The ink tank of the model; the communication between the pressure regulating chamber and the ink chamber is designed as a narrow passage with a multi-faceted cross section, which facilitates product assembly and mold manufacturing.

The invention is further described in the following with reference to the accompanying drawings and embodiments, but the invention is not limited thereto, and any modifications or substitutions of the basic spirit of the invention are still within the scope of the invention as claimed. DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing a first embodiment of the present invention.

Fig. 2 is a cross-sectional view showing the front view of the first embodiment of the present invention.

Figure 3 is a rear elevational view of Embodiment 1 of the present invention.

Fig. 4 is a cross-sectional view in the plan view of the first embodiment of the present invention.

Figure 5 is a cross-sectional view in the right direction of Embodiment 1 of the present invention.

Fig. 6 is a cross-sectional view showing the direction of the bottom view of the first embodiment of the present invention.

Figure 7 is a cross-sectional view in the left-view direction of Embodiment 1 of the present invention.

Figure 8 is a cross-sectional view showing still another direction of the bottom view of the first embodiment of the present invention.

Fig. 9 is a cross-sectional view showing still another right direction of the first embodiment of the present invention.

Figure 10 is a cross-sectional view in the front view of Embodiment 4 of the present invention.

Figure 11 is a rear elevational view of Embodiment 4 of the present invention. detailed description

Example 1

Referring to FIG. 1, FIG. 2 and FIG. 3, the ink cartridge 1 provided by the present invention is composed of a first air passage 10, a pressure regulating chamber 20, a second air passage 30, and an ink chamber 40, wherein the first air passage 10 is The end is in communication with the atmosphere, the other end of the first air passage 10 is in gaseous communication with the pressure regulating chamber 20, one end of the second air passage 30 is in gaseous communication with the pressure regulating chamber 20, and the other end of the second air passage 30 is in gas with the ink chamber 40. Connected.

For convenience of description, the spatial orientation of the ink cartridge 1 is defined herein, and the respective structures are described along the flow direction of the air. The ink cartridge 1 includes a top wall 11, a bottom wall 12, a front wall 13, a rear wall 14, and a left side. Wall 15 and right side wall 16. The ink chamber 40 is disposed at the upper middle portion of the ink tank 1, the pressure adjusting chamber 20 is disposed at a lower portion of the ink tank 1, and the first air passage 10 is wound around the ink Right and below the cavity 40, the second air passage 30 is wound below the ink chamber 40.

Referring to FIG. 1 to FIG. 9 together, the first air passage 10 includes a first communication port 101 and a second communication port 109. The first communication port 101 is a communication port between the atmosphere and the first air passage 10, and the second communication is The port 109 is a communication port between the first air passage 10 and the pressure regulating chamber 20.

The first air passage 10 further includes an inlet passage 102, an inlet chamber 104, a slot passage 105, a first passage chamber 106, a first extension hole 1072, an elongated passage 107, and a second extension hole 1074. The air enters the inlet passage 102 directly through the first communication port 101, and then sequentially flows through the inlet chamber 104, the slot passage 105, the first conduction chamber 106, the first extension hole 1072, the elongated passage 107, and the second extension hole 1074. Finally, the pressure regulating chamber 20 is entered through the second communication port 109.

Among them, the entrance chamber 104 is disposed at the upper right corner of the entire ink cartridge 1. The inlet chamber 104 is a relatively large chamber, and a boss 1045 is protruded downward from an end of the top wall 11 of the ink tank 1, and the inlet passage 102 is opened at the center of the boss 1045. The lower surface of the boss 1045 and the inner surface of the inlet chamber 104 are spaced apart from each other, and the passage cross-sectional area of the inlet passage 102 is much smaller than the cross-sectional area of the boss 1045, thereby ensuring that even if the ink enters the inlet chamber 104 also does not enter the inlet passage 102 at all, avoiding the capillary force of the ink and the first air passage 10 to cause the ink to flow along the first air passage 10 to the outside of the ink tank. Of course, this arrangement is only a preferred approach. Alternatively, the boss 1045 in the inlet chamber 104 is placed on the other wall of the inlet chamber 104, and then the air inlet passage 102 is placed on the boss.

Wherein, the slot channel 105 is disposed adjacent to the front wall 13 of the ink tank 1, and the opening of the slot channel 105 into the inlet 1056 of the first conducting chamber 106 is away from the top wall of the pressure regulating chamber 20 and adjacent to the front wall of the ink tank 1. 13.

The elongated passage 107 is disposed at the rear wall of the pressure regulating chamber 20. The elongated passage 107 may be a narrow passage having a polygonal cross section or a circular cross section, and the elongated passage 107 has a passage sectional area of 0.1 to 1 square inch. The first extension hole 1072 and the second extension hole 1074 are respectively perpendicular to the center line direction of the elongated channel 107 and extend along the thickness direction of the ink cartridge 1 (ie, the direction perpendicular to the front wall 13 and the rear wall 14 of the ink cartridge 1). The leading and trailing ends of the elongated channel 107. Moreover, the first extension aperture 1072 provides gas communication between the first conduction chamber 106 and the leading end of the elongated channel 107. Also, the opening position of the first extension hole 1072 in the first conduction chamber 106 is close to the top wall of the pressure adjustment chamber 20 and close to the rear wall 14 of the ink cartridge 1. In addition, the second extension hole 1074 will be thin The rear end of the long passage 107 is in gas communication with the pressure regulating chamber 20, whereby a second communication port 109 is formed in the upper middle portion of the rear wall of the pressure regulating chamber 20, and the position of the second communication port 109 in the pressure regulating chamber 20 is provided. It is close to the top wall of the pressure regulating chamber 20 and close to the middle of the pressure regulating chamber 20. Of course, this arrangement is only a preferred mode. Alternatively, it is sufficient to ensure that the position of the second communication port 109 in the pressure regulating chamber 20 is close to the top wall of the pressure regulating chamber 20.

The elongated passage 107 is provided with a meander in the spatial direction. For example, the elongated passage 107 starts from the upper extension hole 1072 at the upper end of the right end of the pressure regulating chamber 20 on the rear wall 14 of the ink cartridge 1, along the pressure regulating chamber 20. The height direction (ie, the direction perpendicular to the top wall 11 and the bottom wall 12 of the ink tank 1) extends downward, and is bent to be along the width direction of the pressure adjustment chamber 20 when approaching the bottom wall 12 of the ink tank 1 (ie, perpendicular to the ink tank) 1) The direction of the left side wall 13 and the right side wall 14 extends a distance to the left end, and then is bent to extend upward along the height direction of the pressure regulating chamber 20, and is bent to be close to the top wall of the pressure regulating chamber 20. It extends to the left end along the width direction of the pressure regulating chamber 20 and extends up to the left end second extending hole 1074 of the pressure regulating chamber 20.

The pressure regulating chamber 20 is in the shape of a hollow rectangular parallelepiped, which is located below the ink chamber 40, and a portion thereof is passed through the ink outlet port 44 in a sealed manner.

The second air passage 30 includes a third communication port 301 and a fourth communication port 309. The third communication port 301 is a communication port between the pressure adjustment chamber 20 and the second air passage 30, and the fourth communication port 309 is a second air passage. The communication port between the 30 and the ink chamber 40.

The second air passage 30 further includes a third extension hole 3072, an elongated passage 307, and a second conduction chamber 306. The air in the pressure regulating chamber 20 enters the third extending hole 3072 from the third communication port 301, and sequentially flows through the elongated passage 307 and the second conducting chamber 306, and finally enters the ink chamber 40 from the fourth connecting port 309.

Wherein the elongate channel 307 is similar in shape to the elongate channel 107 of the first air channel 10, except that in the present embodiment, the elongate channel 307 is straight, it is not provided with a folded backhaul, and It is disposed at a lower portion of the rear wall of the pressure regulating chamber 20.

Similarly, the third extension hole 3072 is similarly disposed at one end of the elongated channel 307. The third extension hole 3072 electrically connects the first end of the elongated passage 307 with the pressure regulating chamber, and thereby forms a third communication port 301 at a lower portion of the rear wall of the pressure regulating chamber 20, wherein the pressure of the third communication port 301 is under pressure The position in the adjustment chamber 20 is close to the bottom wall of the pressure regulating chamber 20 and close to the left side wall of the pressure regulating chamber 20. Of course, this arrangement is only a preferred mode. Alternatively, as long as it is guaranteed The position of the third communication port 301 in the pressure regulating chamber 20 may be close to the bottom wall of the pressure regulating chamber 20. Further, the trailing end of the elongated passage 307 is in gas communication with the second conducting chamber 306, and the opening end of the elongated passage 307 and the opening position of the second conducting chamber 306 are close to the bottom wall 12 of the ink tank 1 and close to the ink. The rear wall 14 of the box 1.

The second conductive chamber 306 is disposed at the lower left corner of the entire ink tank 1. The fourth communication port 309 is an opening along the height direction of the ink cartridge 1, which is disposed at the bottom of the ink chamber 40, and communicates the second conduction chamber 306 with the ink chamber 40, and the fourth communication port 309 is at the The position in the second conducting chamber 306 is away from the bottom wall 12 of the ink tank 1 and near the front wall 13 of the ink tank 1.

Further, a sealing cover 50 detachably corresponding to the print head of the printer is detachably provided at the ink outlet port 44. Alternatively, the sealing cover 50 has a thin end face 55 which, when the ink cartridge 1 is installed, can be inserted into the ink cartridge 1 by rupturing the thin end face 55 of the print head. Alternatively, the sealing cover 50 is made of a resilient resin, rubber material or other elastic material. After assembly, the sealing cover 50 is tightly fitted with the cylindrical surface of the ink outlet port 44 of the ink tank 1 to form a liquid seal and a gas seal.

In order to prevent the ink in the ink chamber 40 from flowing back from the air passage or the ink from freely overflowing from the ink outlet 44, the height difference between the fourth communication port 309 and the ink outlet port 44 in the vertical direction is between 5 and 30 mm, preferably Less than 25 mm. The opening area of the fourth communication port 309 is between 0.2 and 5 square millimeters, preferably less than 3 square millimeters.

In addition, the ink cartridge 1 of the present invention comprises a body, a front wall cover and a rear wall film (not shown). After the body forms various communication structures, the front side surface and the body of the body are respectively passed through the front wall cover and the rear wall film. The rear side surface is closed to form the various communicating passages of the present invention.

The left side wall 15 or the right side wall 16 of the ink tank 1 of the present invention is provided with a chip holder 60. The left side wall 15 or the right side wall 16 of the ink tank 1 of the present invention is provided with a resilient arm 70. Example 2

As an alternative embodiment of the present invention, the ink cartridge 1 of the present invention may be provided with a corresponding mounting mechanism on the left side wall 15 or the right side wall 16 of the ink tank 1 without the chip holder 60. The standardized chip holder 60 is fixed to the ink tank 1 of the present invention directly through the mounting mechanism, and a corresponding signal connection is established. Thus, a standardized chip carrier 60 can be repeatedly used on a plurality of ink cartridges 1 of the present invention, thereby avoiding waste of resources and reducing The cost of the ink tank.

Alternatively, the elastic arm structure may not be provided on the left side wall or the right side wall of the ink tank. Alternatively, the first air passage portions 10, 101, 102, 104, 105, 106, 1045, 1056, 1072 are disposed on the left side of the ink cartridge.

Alternatively, the elongated channels 1072, 1074, 3072 may be omitted to directly connect the elongated channels to the conductive cells.

The elongated passages 107, 307 may be straight, or may have one or more tortuous turns in the spatial direction, and may even form a plurality of bending back strokes.

Alternatively, the positions of the respective openings of the ink cartridge of the present invention may be appropriately adjusted, for example, the second communication port 109 is disposed at the upper middle portion of one end of the pressure adjustment chamber 20, and the third communication port 301 is disposed at the other end of the pressure adjustment chamber 20. The middle and lower portions, and the height difference between the second communication port 109 and the third communication port 301 in the vertical direction is 1 to 20 mm.

Alternatively, other space-shaped narrow first air passages 10 or second air passages 30 which are bendable in the up, down, left and right or front and rear directions of the ink tank may be employed.

Alternatively, the sealing cover 50 of the ink cartridge 1 of the present invention may not have a thin end face 55 but a uniform end face. In addition, it is also possible to pre-punch the end face.

The aforementioned two or more ink cartridges of the present invention may be laminated to form a unitary integrated ink cartridge.

Example 3

As an alternative embodiment of the present invention, in order to simplify the mold manufacturing and production process, the pressure regulating chamber 20 may be integrated with the majority of the first air passage 10 except the air inlet, and The second air passage 30 between the ink chamber 40 and the pressure regulating chamber 20 is replaced by a switching valve which is opened before the ink tank is installed, so that the ink chamber and the outside air are turned on after the valve is opened. The structure of such a valve can be a common valve structure in the art, for example, it can be a top open valve or a wide open door manually opened before installation.

Example 4

Referring to FIG. 10 and FIG. 11, as an alternative still embodiment of the present invention, in order to make the mold manufacturing and production process more uniform, the elongated channel 107 may not be disposed on the rear wall 14 of the ink cartridge 1. Slender channel 307. And a section is set in the ink tank 1 near the front wall 13. An elongated bending passage 1077 communicating with the slot passage 105 opens the second communication port 109 at the top wall of the pressure regulating chamber 20. The second communication port 109 conducts the pressure regulating chamber 20 and the elongated bending passage 1077. The third communication port 301 is opened on the left side wall of the pressure regulating chamber 20 and adjacent to the bottom wall of the pressure regulating chamber 20. The third communication port 301 directly conducts the pressure adjustment chamber 20 and the second conduction chamber 306.

For the first air passage 10, air enters the inlet passage 102 through the first communication port 101, and then sequentially flows through the inlet chamber 104, the slot passage 105, the elongated bending passage 1077, the second communication port 109, and finally enters the pressure regulation. Cavity 20.

For the second air passage 30, the air in the pressure regulating chamber 20 directly enters the second conducting chamber 306 from the third communication port 301, and then enters the ink chamber 40 from the fourth communication port 309.

In this way, it is not necessary to use the back wall film.

Claims

Rights request

An ink cartridge comprising a top wall, a bottom wall, a front wall, a rear wall, a left side wall and a right side wall, the ink tank further comprising an ink chamber and a first air passage, the ink The chamber is provided with an ink outlet, and one end of the first air passage is in communication with atmospheric gas, wherein: the ink cartridge further comprises a pressure adjusting chamber and a second air passage, the pressure adjusting chamber and the first air passage The other end of the gas is in gas communication, one end of the second air passage is in gas communication with the pressure regulating chamber, and the other end of the second air passage is in gas communication with the ink chamber.

2. The ink cartridge according to claim 1, wherein said ink outlet is provided with a detachable sealing cover.

3. The ink cartridge according to claim 2, wherein the sealing cover is a sealing cover that can be pierced by a print head of the printer.

The ink cartridge according to any one of claims 1 to 3, wherein the first air passage includes a first communication port and a second communication port, and the second air passage includes a third communication port and a a communication port between the atmosphere and the first air passage, where the second communication port is a communication port between the first air channel and the pressure adjustment cavity, The third communication port is a communication port between the pressure adjustment chamber and the second air passage, and the fourth communication port is a communication port between the second air passage and the ink chamber.

The ink cartridge according to claim 4, wherein the pressure regulating chamber is located below or below the ink chamber, and the fourth communication port is located at the bottom of the ink chamber.

The ink cartridge according to claim 5, wherein the second communication port is disposed at an upper middle portion of the pressure adjustment chamber, and the third communication port is disposed at a middle and a lower portion of the pressure adjustment chamber, And a height difference between the second communication port and the third communication port in the vertical direction is 1-20 mm.

The ink cartridge according to claim 6, wherein the second communication port is disposed in the pressure regulating chamber at a position close to a top wall of the pressure regulating chamber, and the third communication port is in the The set position in the pressure regulating chamber is close to the bottom wall of the pressure regulating chamber.

The ink cartridge according to claim 7, wherein a height difference between the fourth communication port and the ink outlet port in a vertical direction is between 5 and 30 mm, and the fourth communication port is The opening area is between 0.2 and 5 square millimeters.

9. The ink cartridge according to claim 1, wherein the first air passage includes at least one elongated passage before entering the pressure regulating chamber, and the passage area of the elongated passage is 0.1 to 1.5 Between square millimeters.

10. The ink cartridge according to claim 1, wherein the second air passage includes at least one elongated passage after leaving the pressure regulating chamber, and the passage area of the elongated passage is 0.1 to 1.5 Between square meters.

The ink cartridge according to claim 9 or 10, wherein the elongated passage of the first air passage and/or the elongated passage of the second air passage are disposed in a spatial direction There is at least one twist.

12. The ink cartridge according to claim 11, wherein the elongated passage of the first air passage and the elongated passage of the second air passage are respectively disposed behind the pressure adjustment chamber An upper portion and a lower portion of the wall, and the elongated end of the first air passage and the leading end and the trailing end of the elongated passage of the second air passage are respectively provided with an extending hole.

The ink cartridge according to claim 12, wherein the first communication port and the elongated passage of the first air passage further comprise an inlet passage, an inlet chamber, a slot passage, and a first conducting chamber, adjacent to the top wall of the ink tank in the inlet chamber, and a boss protruding from a central portion of the top wall of the inlet chamber, the inlet passage being formed on the boss.

14. The ink cartridge according to claim 13, wherein an opening position of the slot passage into the inlet of the first conduction chamber is away from a top wall of the pressure adjustment chamber and adjacent to the ink cartridge The front wall, the open position of the elongated passage of the first air passage from the outlet of the first conductive chamber is close to the top wall of the pressure regulating chamber and adjacent to the rear wall of the ink tank.

The ink cartridge according to claim 12, wherein a second conductive chamber is disposed between the elongated passage of the second air passage and the fourth communication port, the second air An opening position of the elongated passage of the passage into the inlet of the second conduction chamber is adjacent to a bottom wall of the ink tank and adjacent to a rear wall of the ink tank, and the fourth communication port is in the conduction chamber The opening position is away from the bottom wall of the ink tank and near the front wall of the ink tank.

16. The ink cartridge according to claim 1, wherein a chip holder is detachably mounted to a left side wall or a right side wall of the ink tank.

17. The ink cartridge according to claim 5, wherein: said first air passage includes an elongated bent passage, said second communication opening said said elongated at a top wall of said pressure regulating chamber a bending passage is electrically connected to the pressure regulating chamber, the third communication port is disposed on a left side wall of the pressure regulating chamber and adjacent to a bottom wall of the pressure regulating chamber, and the third communication port passes through a second The conduction chamber is electrically connected to the fourth communication port.

A combined ink cartridge, characterized in that the combined ink cartridge is laminated and integrated into two in one or two or more ink cartridges according to any one of claims 1 to 17.

19. An ink cartridge, the ink cartridge comprising an ink chamber and an air passage, the ink chamber being provided with an ink outlet, the ink outlet being sealed by a detachable sealing cover, the air passage end and the atmosphere Gas communication, characterized in that: the ink cartridge further comprises a pressure regulating chamber and a switching valve, wherein the pressure regulating chamber is in gas communication with the other end of the air passage, and the switching valve is opened before being installed and used The ink chamber is electrically connected to the pressure regulating chamber.