CN215705131U - Ink cartridge and ink jet printer - Google Patents

Abstract

The utility model provides an ink box and an ink-jet printer, and relates to the technical field of printing. The ink box comprises an ink box shell and an expansion shell; the ink box shell comprises an upper surface, and an air guide outflow part and an ink channel inflow part are arranged on the upper surface; the expansion shell is provided with an air guide inflow part and an ink channel outflow part on the surface abutted to the upper surface of the ink box shell, and an ink channel communicated with the ink channel outflow part is arranged in the expansion shell. An inkjet printer includes a device body and an ink cartridge. The inside through setting up gas circulation and ink circulation and dilatation casing between the upper surface of cartridge case and dilatation casing increases the ink passageway, has realized that the ink in the dilatation casing gets into cartridge case from cartridge case's upper surface, has avoided the problem that the in-process that the ink in the dilatation casing flowed into cartridge case can receive the hindrance under the ink pressure effect in cartridge case.

Description

Ink cartridge and ink jet printer

Technical Field

The utility model relates to the technical field of printing, in particular to an ink box and an ink-jet printer.

Background

An ink cartridge refers to a part for storing printing ink in an ink jet printer, and is an important component in an ink jet printer. In the design phase, manufacturers of ink jet printers consider that a printer of the same type can be suitable for two types of ink cartridges with different capacities, and the two types of ink cartridges are only different in size. For the ink cartridge compatible manufacturer, it is necessary to prepare two types of empty cases at the same time, which will undoubtedly increase the manufacturing cost of the compatible manufacturer. The smaller size ink cartridge may contain a smaller amount of ink, resulting in a larger number of empty cases in the smaller size ink cartridge, while the larger size ink cartridge may contain a smaller number of empty cases, and the smaller size ink cartridge may be expanded in capacity by the cartridge recycling manufacturer.

In the related art, an ink cartridge includes a cartridge case and a volume-expanding member detachably coupled to each other and accommodating ink, an air outflow port and an ink inflow port are formed in a rear side surface of the cartridge case, an ink inflow port is located below the air outflow port, an air inflow tube and an ink outflow tube are formed in the volume-expanding member, the air inflow tube is located below the ink outflow tube, and when the cartridge case and the volume-expanding member are coupled, the air outflow port communicates with the air inflow tube and the ink inflow port communicates with the ink outflow tube.

However, the ink in the container in the related art is prevented from flowing into the cartridge case by the pressure of the ink in the cartridge case.

SUMMERY OF THE UTILITY MODEL

The utility model provides an ink box and an ink-jet printer, which aim to solve the problem that ink in an expansion piece in the related art is blocked under the action of ink pressure in an ink box shell in the process of flowing into the ink box shell.

In one aspect, the present invention provides an ink cartridge including a cartridge housing and a flash chamber housing;

the ink box comprises an ink box shell and an ink outlet, wherein the ink box shell is provided with an ink outlet and a first air inlet which are used for connecting an ink-jet printer, the ink box shell comprises an upper surface, and an air guide outflow part and an ink channel inflow part are arranged on the upper surface;

the volume expansion shell is provided with an air guide inflow part and an ink channel outflow part, the air guide inflow part is communicated with the air guide outflow part, the ink channel outflow part is communicated with the ink channel inflow part, an ink channel communicated with the ink channel outflow part is arranged in the volume expansion shell, and the ink channel is used for enabling ink in the volume expansion shell to enter the ink box shell along the ink channel when the air pressure in the volume expansion shell is increased.

Optionally, the flash enclosure comprises a first front panel, a second front panel, a rear panel, an upper panel, a first lower panel, a second lower panel, a left panel, and a cover panel, the first front panel is respectively and vertically connected with the upper panel and the first lower panel, the second front panel is respectively and vertically connected with the first lower panel and the second lower panel, the rear panel is respectively vertically connected with the upper panel and the second lower panel, the left panel is arranged at one side of the first front panel, the second front panel, the rear panel, the upper panel, the first lower panel and the second lower panel, the first front panel, the second front panel, the rear panel, the upper panel, the first lower panel, the second lower panel and the left panel enclose an ink storage space with one side open, and the cover plate covers the opening.

Optionally, the expansion casing further includes a first guide plate, a second guide plate, and a third guide plate, the first guide plate is respectively connected to the first lower plate and the second guide plate vertically, the second guide plate is parallel to the first lower plate, the third guide plate is parallel to the second front plate, the third guide plate is connected to the second guide plate vertically, and the first guide plate, the second guide plate, the third guide plate, the first lower plate, the second front plate, the left plate, and the cover plate enclose the ink channel.

Optionally, the third guide plate is disposed close to the second lower panel, and a gap is formed between the third guide plate and the second lower panel.

Optionally, the cover plate is a transparent plate.

Optionally, the cartridge housing further includes a lower surface, a front surface, a rear surface, a left surface, and a right surface, the ink outlet and the first air inlet are disposed on the front surface, the ink outlet is located below the first air inlet, and an ink inlet is disposed between the ink outlet and the first air inlet.

Optionally, the air guide outflow part is an air guide outflow hole, the ink channel inflow part is an ink channel inflow hole, the air guide inflow part is the air guide inflow pipe, and the ink channel outflow part is the ink channel outflow pipe.

Optionally, the front surface of ink horn casing is provided with the concave part, be provided with the chip mounting panel on the concave part, the chip mounting panel along the front surface is directional the direction of rear surface extends, install the chip on the chip mounting panel, the chip is located the chip mounting panel orientation one side of right surface.

Alternatively, the recess penetrates the cartridge case in a direction in which the left surface is directed to the right surface.

In another aspect, the present invention provides an ink jet printer comprising: an apparatus main body and the ink cartridge as described above;

the ink cartridge is detachably mounted in the apparatus main body.

The utility model provides an ink box and an ink-jet printer, wherein an air circulation and an ink circulation are arranged between the upper surface of an ink box shell and an expansion shell, and an ink channel is additionally arranged in the expansion shell, so that ink in the expansion shell enters the ink box shell from the upper surface of the ink box shell, and the problem that the ink in the expansion shell is blocked under the action of the ink pressure in the ink box shell in the process of flowing into the ink box shell is solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of an ink cartridge according to an embodiment of the present invention;

FIG. 2 is a schematic view of a cartridge housing of the ink cartridge of FIG. 1;

FIG. 3 is a schematic view of the internal structure of the cartridge housing provided in FIG. 2;

FIG. 4 is a schematic view of an expansion housing of the ink cartridge of FIG. 1;

fig. 5 is a schematic view of an internal structure of the expansion case provided in fig. 4.

Description of reference numerals:

1-ink cartridge; 10-cartridge housing;

101-a front surface; 102-a rear surface;

103-left surface; 104-right surface;

105-an upper surface; 106-lower surface;

107-recesses; 108-a chip mounting board;

109-chip; 11-an ink outlet;

12-a first air inlet; 13-an air guide outflow part;

14-ink channel inflow; 15-pressure bag;

16-a resilient element; 17-a baffle plate;

18-ball valve; 20-expansion shell;

201-a first front panel; 202-a second front panel;

203-a rear panel; 204-upper panel;

205-a first lower panel; 206-a second lower panel;

207-left panel; 208-a cover plate;

209-a first guide plate; 210-a second guide plate;

211-a third guide plate; 21-air guide inflow part;

22-ink channel outflow; 23-ink channel.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description above, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

In the related art, an ink cartridge includes a cartridge case and a volume-expanding member detachably coupled to each other and accommodating ink, an air outflow port and an ink inflow port are formed in a rear side surface of the cartridge case, an ink inflow port is located below the air outflow port, an air inflow tube and an ink outflow tube are formed in the volume-expanding member, the air inflow tube is located below the ink outflow tube, and when the cartridge case and the volume-expanding member are coupled, the air outflow port communicates with the air inflow tube and the ink inflow port communicates with the ink outflow tube. However, the ink in the container in the related art is prevented from flowing into the cartridge case by the pressure of the ink in the cartridge case.

In order to solve the above problems, the present invention provides an ink cartridge and an inkjet printer, in which a gas flow and an ink flow are provided between an upper surface of a cartridge housing and an expansion housing, and an ink passage is added inside the expansion housing, so that ink in the expansion housing enters the cartridge housing from the upper surface of the cartridge housing, and the problem that the ink in the expansion housing is blocked by the pressure of the ink in the cartridge housing when flowing into the cartridge housing is avoided.

The ink cartridge and the ink jet printer provided by the embodiment of the present invention will be described in detail with reference to specific embodiments.

FIG. 1 is a schematic view of an ink cartridge according to an embodiment of the present invention; FIG. 2 is a schematic view of a cartridge housing of the ink cartridge of FIG. 1; FIG. 3 is a schematic view of the internal structure of the cartridge housing provided in FIG. 2; FIG. 4 is a schematic view of an expansion housing of the ink cartridge of FIG. 1; fig. 5 is a schematic view of an internal structure of the expansion case provided in fig. 4.

As shown in fig. 1 to 5, an ink cartridge 1 according to an embodiment of the present invention includes a cartridge case 10 and an expansion case 20.

The cartridge case 10 may be formed by modifying an empty cartridge case with a smaller capacity, or may be formed by injection molding, and is not specifically configured here.

The cartridge case 10 has a polygonal shape as a whole. The cartridge housing is provided with an ink outlet 11 and a first air inlet 12 for connection to an ink jet printer.

The side where the ink outlet 11 is located is defined as a front surface 101, the side opposite to the front surface 101 is defined as a rear surface 102, with respect to the state after the cartridge case 10 is mounted, and when viewed from the front surface 101, the left side of the line of sight is a left surface 103, the right side of the line of sight is a right surface 104, the upper side of the line of sight is an upper surface 105, and the lower side of the line of sight is a lower surface 106. The front surface 101, the rear surface 102, the left surface 103, the right surface 104, the upper surface 105, and the lower surface 106 of the cartridge case 10 enclose a cavity that contains ink.

The air guide outflow portion 13 and the ink passage inflow portion 14 are provided on the upper surface 105 of the cartridge case 10.

Note that the ink outlet 11 and the first air inlet 12 are provided on the front surface 101, the ink outlet 11 is located below the first air inlet 12, and an ink injection inlet is provided between the ink outlet 11 and the first air inlet 12.

The chamber of the cartridge housing 10 is provided with a pressure bag 15, an elastic element 16, a baffle 17, a ball valve 18 and a second air inlet. The pressure bag 15 is connected with the first air inlet 12, and air can be fed or discharged to the pressure bag 15 through the first air inlet; the elastic element 16 abuts against the pressure bag 15, and the elastic element 16 is used for preventing the pressure bag 15 from being over-expanded; the baffle 17 is connected with the ball valve 18, and the baffle 17 is driven to move by the air intake or air exhaust of the pressure bag 15, so that the ball valve 18 opens or closes the second air inlet; the second inlet port communicates with the air guide outflow portion 13. The gas entering from the second inlet port flows out from the air guide outflow portion 13 and does not flow out from the ink passage inflow portion 14.

The resilient member 16 comprises a leaf spring, which may be relatively flat. The spring plate may be disposed between the sidewall of the cartridge case 10 and the pressure bag 15 and/or against the sidewall of the cartridge case 10 and the pressure bag 15. The resilient element 16 may comprise at least one or at least two biasing legs biasing the spring leaf towards the pressure bag 15. The spring plate may include a bonding surface for engaging the pressure pocket 15. The spring plate further includes at least one gripping extension for gripping and assembling the spring plate. Specifically, the resilient element 16 includes two opposing biasing legs disposed around an outer contour of the engagement surface of the spring plate, the biasing legs being bendable in a surface perpendicular to the side walls of the cartridge housing 10 to bias the spring plate away from the side walls of the cartridge housing 10.

The flap 17 is configured to be pivotable substantially about a pivot axis. Flap 17 may be combined with a ball valve 18, the ball valve 18 sealing the second inlet. The ball valve may comprise a rubber disc which closes the second inlet between the flap 17 and the rubber disc.

In the above described embodiment the pressure bag 15 actuates the ball valve 18 via the resilient element 16 and the flap 17, however, in other embodiments the ball valve 18 may be actuated directly by the pressure bag 15 or via one of the resilient element 16 or the flap 17 or via other arrangements.

The expansion case 20 is L-shaped as a whole. The expansion case 20 contains ink therein for combining with the cartridge case 10 to expand the cavity capacity of the cartridge case 10.

Like the cartridge case 10, the expansion case 20 also has the front, rear, lower, left, and right. The expansion case 20 and the cartridge case 10 have the same size in the up-down direction, and thus the ink cartridge 1 after expansion is substantially flush in the up-down direction.

The flash housing 20 abuts the upper surface 105 and the rear surface 102 of the cartridge housing 10. An air guide inflow portion 21 and an ink passage outflow portion 22 are provided on a surface of the expansion case 20 that abuts the upper surface 105 of the cartridge case 10. When the cartridge case 10 and the expansion case 20 are combined, the air guide inflow portion 21 communicates with the air guide outflow portion 13, and the ink passage outflow portion 22 communicates with the ink passage inflow portion 14.

In an alternative embodiment, the flash case 20 includes a first front panel 201, a second front panel 202, a rear panel 203, an upper panel 204, a first lower panel 205, a second lower panel 206, a left panel 207, and a cover panel 208, the first front panel 201 is vertically connected to the upper panel 204 and the first lower panel 205, the second front panel 202 is vertically connected to the first lower panel 205 and the second lower panel 206, the rear panel 203 is vertically connected to the upper panel 204 and the second lower panel 206, the left panel 207 is disposed on one side of the first front panel 205, the second front panel 206, the rear panel 203, the upper panel 204, the first lower panel 205, the second lower panel 206, and the left panel 207, the first front panel 205, the second front panel 206, the rear panel 203, the upper panel 204, the first lower panel 205, the second lower panel 206, and the cover panel 208 cover the open area. The first front panel 201, the second front panel 202, the rear panel 203, the upper panel 204, the first lower panel 205, and the second lower panel 206 are all rectangular in shape. The left panel 207 and the cover plate 208 are L-shaped.

The inside of the expansion case 20 is provided with an ink passage 23 communicating with the ink passage outflow portion 22, and the ink passage 23 is used for flowing the ink in the expansion case 20 out of the ink passage outflow portion 22 along the ink passage 23.

In an alternative embodiment, the expansion casing 20 further includes a first guide plate 209, a second guide plate 210, and a third guide plate 211, the first guide plate 209 is vertically connected to the first lower panel 205 and the second guide plate 210, respectively, the second guide plate 210 is parallel to the first lower panel 205, the third guide plate 211 is parallel to the second front panel 202, the third guide plate 211 is vertically connected to the second guide plate 210, and the first guide plate 209, the second guide plate 210, the third guide plate 211, the first lower panel 205, the second front panel 202, the left panel 207, and the cover plate 208 enclose an ink channel. The first guide plate 209, the second guide plate 210, and the third guide plate 211 are all rectangular in shape.

The ink box 1 provided by the embodiment of the utility model has the following ink conveying process: the ink box is used for inflating a pressure bag 15 through a first air inlet 12 of the ink box 1 by an ink-jet printer, increasing the air pressure in the ink box shell 10, and leading ink to be output from an ink outlet 11; the flap 17 is driven by the inflation of the pressure bag 15 to move, so that the ball valve 18 opens the second air inlet, the air entering from the second air inlet flows into the expansion casing 20 from the air guide outflow part 13, the air pressure inside the expansion casing 20 is increased, and the ink inside the expansion casing 20 enters the ink box casing 10 from the ink channel outflow part 22 and the ink channel inflow part 14 along the ink channel 23.

In the ink cartridge 1 provided in the embodiment of the present invention, the gas circulation and the ink circulation are provided between the upper surface 105 of the cartridge housing 10 and the expansion housing 20, and the ink passage is added in the expansion housing, so that the ink in the expansion housing 20 enters the cartridge housing 10 from the upper surface 105 of the cartridge housing 10, and the problem that the ink in the expansion housing 20 is blocked under the action of the ink pressure in the cartridge housing 10 in the process of flowing into the cartridge housing is avoided.

Alternatively, in order to ensure that the ink in the ink storage space of the expansion case 20 is consumed as much as possible, the third guide plate 211 is disposed close to the second lower surface plate 206 with a gap between the third guide plate 211 and the second lower surface plate 206.

Alternatively, in order to prevent the cartridge housing 10 and the expansion housing 20 from moving relative to each other, the air guide outflow portion 13 may be an air guide outflow hole, the ink channel inflow portion 14 may be an ink channel inflow hole, the air guide inflow portion 21 may be an air guide inflow pipe, the ink channel outflow portion 22 may be an ink channel outflow pipe, the air guide outflow hole is connected to the air guide inflow pipe in an inserting manner, and the ink channel inflow hole is connected to the ink channel outflow pipe in an inserting manner.

In an alternative embodiment, the air guide outflow portion 13 is an air guide outflow hole, the ink channel inflow portion 14 is an ink channel inflow hole, the air guide inflow portion 21 is an air guide inflow tube, the ink channel outflow portion 22 is an ink channel outflow tube, and steps are provided in both the air guide outflow hole and the ink channel inflow hole. Before the ink cartridge 10 is filled with ink, the air guide outlet and the ink passage inlet are sealed respectively. The ink cartridge 1 further includes a sealing member for sealing the air guide outflow hole and the ink passage inflow hole, the sealing member having an automatic sealing function, the sealing member including a sealing body having an insertion port and a flange formed at one end of the sealing body. When the sealing member is combined with the air guide outflow hole, the end flange of the sealing member is fitted with the step of the air guide outflow hole, and the sealing member does not go beyond the upper surface 105 in the up-down direction; when the cartridge case 10 is combined with the expansion case 20, the air guide inflow tube is inserted into the cavity of the cartridge case 10 through the insertion opening of the sealing member, so that the cavity of the cartridge case 10 and the cavity of the expansion case 20 are in air communication.

When the sealing member is combined with the ink passage inflow hole, the end flange of the sealing member is matched with the step of the ink passage inflow hole, and the sealing member does not exceed the upper surface 105 in the up-down direction; when the cartridge case 10 is combined with the expansion case 20, the ink channel outflow tube is inserted into the cavity of the cartridge case 10 through the insertion opening of the sealing member, so that the ink communication between the cavity of the cartridge case 10 and the cavity of the expansion case 20 is realized. Since the sealing member does not extend beyond the upper surface 105, when the cartridge case 10 is coupled to the expansion case 20, the upper surface 105 of the cartridge case 10 is closely coupled to the first lower panel 205 of the expansion case 20, so that the appearance of the ink cartridge 1 can be improved.

Of course, in other implementations, the air outflow portion 13 may be an air guide outflow pipe, the ink channel inflow portion 14 may be an ink channel inflow pipe, the air guide inflow portion 21 may be an air guide inflow hole, the ink channel outflow portion 22 may be an ink channel outflow hole, the air guide outflow pipe is connected to the air guide inflow hole in an inserting manner, and the ink channel inflow pipe is connected to the ink channel outflow hole in an inserting manner.

Optionally, the cover plate 208 is a transparent plate. The cover plate 208 is made of a transparent material. The amount of ink in the ink storage space in the expansion housing 20 can be observed through the cover plate 208, so that the expansion housing 20 can be replaced in time.

Wherein the operator can readily observe the change in the amount of ink in the flash tank 20 through the transparent cover plate 208. In the embodiment of the present invention, the expansion case 20 is replaceable, that is, the expansion case 20 and the cartridge case 10 are separable. When the operator observes that the ink in the expansion housing 20 is consumed, the expansion housing 20 with the consumed ink can be separated from the cartridge housing 10, and then a new expansion housing 20 can be combined with the cartridge housing 10.

The replacement process of the expansion shell 20 is as follows:

first, the expansion case 20 and the cartridge case 10, which have been exhausted with ink, are separated from each other, and since the sealing member has an automatic sealing function, the sealing members located at the air guide outflow hole and the ink passage inflow hole are automatically sealed after the air guide outflow hole and the ink passage inflow hole are disengaged from the air guide inflow pipe and the ink passage outflow pipe, respectively, so that the ink in the cartridge case 10 does not overflow. Then, the first lower panel 205 where the air guide inflow conduit and the ink passage of the prepared expansion case 20 are flowed out is upward, the upper surface 105 where the air guide outflow hole and the ink passage inflow hole of the cartridge case 10 are downward, so that the air guide outflow hole corresponds to the air guide inflow conduit, the ink passage inflow hole corresponds to the ink passage outflow conduit, and finally the expansion case 20 is combined with the cartridge case 10.

Alternatively, the front surface 101 of the cartridge housing 10 is provided with a recess 107, the recess 107 is provided with a chip mounting board 108, the chip mounting board 108 extends along the front surface 101 in a direction toward the rear surface 102, the chip mounting board 108 is mounted with a chip 109, and the chip 109 is located on a side of the chip mounting board 108 facing the right surface 104.

Wherein the recess 107 penetrates the cartridge housing 10 in a direction in which the left surface 103 is directed to the right surface 104. The recess 107 may receive an electrical connector of the inkjet printer to establish an electrical connection between the chip 109 and the electrical connector.

The embodiment of the utility model also provides an ink-jet printer, which comprises a device main body and an ink box 1; the ink cartridge 1 is detachably mounted in the apparatus main body.

The ink cartridge 1 in this embodiment has the same structure as the ink cartridge provided in any of the above embodiments, and can bring about the same or similar technical effects, and therefore, the description thereof is omitted for brevity, and reference may be specifically made to the description of the above embodiments.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. An ink cartridge, comprising a cartridge case and an expansion case;

the ink box comprises an ink box shell and an ink outlet, wherein the ink box shell is provided with an ink outlet and a first air inlet which are used for connecting an ink-jet printer, the ink box shell comprises an upper surface, and an air guide outflow part and an ink channel inflow part are arranged on the upper surface;

the volume expansion shell is provided with an air guide inflow part and an ink channel outflow part, the air guide inflow part is communicated with the air guide outflow part, the ink channel outflow part is communicated with the ink channel inflow part, an ink channel communicated with the ink channel outflow part is arranged in the volume expansion shell, and the ink channel is used for enabling ink in the volume expansion shell to enter the ink box shell along the ink channel when the air pressure in the volume expansion shell is increased.

2. The ink cartridge as claimed in claim 1, wherein the expansion case includes a first front panel, a second front panel, a rear panel, an upper panel, a first lower panel, a second lower panel, a left panel and a cover panel, the first front panel is vertically connected with the upper panel and the first lower panel, respectively, the second front panel is vertically connected with the first lower panel and the second lower panel, respectively, the rear panel is vertically connected with the upper panel and the second lower panel, respectively, the left panel is disposed at one side of the first front panel, the second front panel, the rear panel, the upper panel, the first lower panel, the second lower panel and the left panel, the first front panel, the second front panel, the rear panel, the upper panel, the first lower panel, the second lower panel and the left panel enclose an ink storage space with one side open, the cover plate covers the open mouth.

3. The ink cartridge of claim 2, wherein the flash housing further includes a first guide plate, a second guide plate, and a third guide plate, the first guide plate being perpendicularly connected to the first lower plate and the second guide plate, respectively, the second guide plate being parallel to the first lower plate, the third guide plate being parallel to the second front plate, the third guide plate being perpendicularly connected to the second guide plate, the first guide plate, the second guide plate, the third guide plate, the first lower plate, the second front plate, the left plate, and the cover plate enclosing the ink channel.

4. The ink cartridge of claim 3, wherein the third guide plate is disposed adjacent to the second lower panel with a gap therebetween.

5. The cartridge of claim 2 wherein the cover plate is a transparent plate.

6. The ink cartridge according to any one of claims 1 to 5, wherein said cartridge case further comprises a lower surface, a front surface, a rear surface, a left surface, and a right surface, said ink outlet and said first air inlet are provided on said front surface, said ink outlet is located below said first air inlet, and an ink injection inlet is provided between said ink outlet and said first air inlet.

7. The ink cartridge as claimed in claim 6, wherein the air guide outflow portion is an air guide outflow hole, the ink passage inflow portion is an ink passage inflow hole, the air guide inflow portion is the air guide inflow tube, and the ink passage outflow portion is the ink passage outflow tube.

8. The ink cartridge as claimed in claim 6, wherein a front surface of the cartridge case is provided with a recess on which a chip mounting board is provided, the chip mounting board extending in a direction in which the front surface is directed toward the rear surface, the chip mounting board having a chip mounted thereon, the chip being located on a side of the chip mounting board directed toward the right surface.

9. The ink cartridge as claimed in claim 8, wherein the recess penetrates the cartridge case in a direction in which the left surface is directed to a right surface.

10. An ink jet printer, comprising: a device main body and the ink cartridge according to any one of claims 1 to 9;

the ink cartridge is detachably mounted in the apparatus main body.

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