CN212353274U - Ink-jet printer - Google Patents

Abstract

The utility model relates to an ink-jet printer, including first china ink jar and second china ink jar. Wherein the ink tank height of the first ink tank is the same as the ink tank height of the second ink tank. The first ink tank includes a first ink reservoir and a first buffer chamber. The first ink reservoir has a first maximum ink capacity. The first buffer chamber has a first buffer chamber volume. The ratio of the first maximum ink capacity to the first buffer chamber volume is greater than or equal to 3. According to the utility model discloses, first china ink jar is the same with the height of second china ink jar. Thus, the first ink tank and the second ink tank can be easily provided without causing an excessive increase in the overall height of the ink jet printer. In addition, the ratio of the first maximum ink capacity to the first buffer chamber volume is greater than or equal to 3, and the first ink storage chamber volume can be increased without increasing or excessively increasing the height of the first ink tank, so that the amount of ink that can be contained in the first ink tank is increased, and the miniaturization of the ink jet printer is facilitated.

Description

Ink-jet printer

Technical Field

The utility model relates to a printing apparatus technical field specifically relates to an ink jet printer.

Background

An inkjet printer generally performs printing by ejecting ink from a recording unit onto a recording medium (for example, printing paper).

Fig. 1 schematically shows an example of an existing ink jet printer 1. Hereinafter, for convenience of description, a direction in which the ink jet printer 1 faces the user is defined as "front" and a direction opposite thereto is defined as "rear" with reference to a position at which the user uses the ink jet printer 1, and a left-hand side of the user is defined as "left" and a right-hand side of the user is defined as "right".

As shown in fig. 1, the inkjet printer 1 includes a printer body 2 and an ink tank provided on one side (e.g., the front side) of the printer body 2. The printer body 2 includes a frame portion 3. An ink tank is provided in the frame portion 3 for containing ink to be supplied to the recording portion 9. Fig. 1 shows an ink jet printer 1 having four ink tanks. Specifically, the four ink tanks include one first ink tank 10 disposed at the front left of the frame portion 3 and three second ink tanks 20 disposed side by side at the front right of the frame portion 3. The first ink tank 10 may contain black ink. The three second ink tanks 20 can contain cyan, pink, and yellow inks, respectively, so that the printing contents of the inkjet printer 1 have more abundant colors.

As shown in fig. 2, the entire first ink tank 10 may be constituted by a resin frame 31 formed of a resin material, and the first and second coatings 18 and 19. The first ink tank 10 may be divided into several parts, i.e., a first ink storage chamber 11, a first ink injection port 12, a first buffer chamber 14, a first ink supply portion 15, and a first atmosphere communication portion 16, according to the function of each part.

Wherein the first ink reservoir 11 is for containing ink to be supplied to the recording portion 9. The first ink injection port 12 is provided at the top of the first ink tank 10 and communicates with the first ink reservoir 11. The user can inject ink into the first ink reservoir 11 through the first ink injection port 12. The first ink supply portion 15 communicates with the recording portion 9 through an ink supply tube (not shown) to supply ink to the recording portion 9. The first buffer chamber 14 is located below the first ink reservoir 11, and communicates with the first ink reservoir 11 through a fine flow path. The first atmosphere communication portion 16 is provided at the top of the first buffer chamber 14, and has a passage therein that communicates with the first buffer chamber 14. The first buffer chamber 14 can thereby communicate with the outside atmosphere through the first atmosphere communication portion 16.

Further, the first ink tank 10 has a first tank bottom surface 17. The ink tank height D of the first ink tank 10 is defined between the first ink supply port 12 and the first ink tank bottom surface 17 in a direction perpendicular to the plane of the first ink supply port 12.

Similarly, the second ink tank 20 may be entirely constituted by the resin frame 32 and the first and second coatings 28, 29 formed of a resin material. And the second ink tank 20 may be divided into several parts, a second ink storage chamber 21, a second ink injection port 22, a second buffer chamber 24, a second ink supply portion 25, and a second atmosphere communication portion 26, according to the function of each part. The above-described structure of the second ink tank 20 functions substantially the same as that realized by the similar structure in the first ink tank 10, and will not be described in detail here.

The second ink tank 20 has a second tank bottom surface 27. The ink tank height D of the second ink tank 20 is defined between the second ink supply port 22 and the second ink tank bottom surface 27 in a direction perpendicular to the plane of the second ink supply port 22.

In the use of an ink jet printer, the amount of black ink used is generally large. As shown in fig. 3, in the above-described ink jet printer 1, the first ink tank 10 has the first height D1, and the second ink tank 20 has the second height D2. Wherein the first height D1 is greater than the second height D2. Thus, the first ink tank 10 has a larger ink capacity than the second ink tank 20. The use of the first ink tank 10 allows more black ink to be contained, avoiding the case where ink is frequently replenished.

Meanwhile, the first height D1 of the first ink tank 10 is large, and even if the ink capacity thereof is increased, the dimension of the first ink tank 10 in the width direction is not excessively increased. This makes it possible to downsize the entire ink jet printer 1 in the width direction (substantially horizontal direction) of the first ink tank 10.

In order to facilitate the user to replenish the different ink tanks with ink, the inkjet printer 1 is configured such that the first ink filling port 12 of the first ink tank 10 and the second ink filling port 22 of the second ink tank 20 are located in the same horizontal plane. However, the first ink tank 10 is higher than the second ink tank 20. To achieve this, the height of the second ink tank 20 needs to be raised. Therefore, although the ink jet printer 1 achieves miniaturization in the width direction of the first ink tank 10, its size in the height direction increases.

Further, when the user supplies ink to the ink tank, the ink occasionally leaks out. In order to prevent the leaked ink from flowing out of the frame portion 3 or other undesired positions, an absorber is generally provided below the ink tank. The absorber can absorb the leaking ink and prevent it from flowing out of the frame part 3 or other undesired locations.

However, in the inkjet printer 1, in order to avoid an excessive increase in height, the absorber 5 is provided only below the second ink tank 20. Therefore, when ink is injected into the first ink tank 10, the ink leaks out and flows to the outside of the frame portion 3 or other undesirable positions, which is inconvenient for the user.

Therefore, there is a need for an inkjet printer that at least partially solves the above problems of the prior art.

SUMMERY OF THE UTILITY MODEL

In the summary section a series of concepts in a simplified form is introduced, which will be described in further detail in the detailed description section. The inventive content does not imply any attempt to define the essential features and essential features of the claimed solution, nor is it implied to be intended to define the scope of the claimed solution.

In order to solve the above problem at least in part, the present invention provides an ink jet printer, comprising:

a first ink tank, the first ink tank comprising:

a first reservoir for containing ink, the first reservoir having a first maximum ink capacity;

the first ink injection port is communicated with the first ink storage chamber and is used for injecting ink into the first ink storage chamber;

the first buffer chamber is positioned below the first ink storage chamber and is used for communicating the first ink storage chamber with the outside atmosphere, and the first buffer chamber has a first buffer chamber volume; and

the bottom surface of the first ink tank is provided with a plurality of ink tanks,

the first ink tank is provided with a first height which is defined between the first ink injection port and the bottom surface of the first ink tank along a first direction which is vertical to the plane of the first ink injection port; and

a second ink tank including:

a second ink reservoir for containing ink, the second ink reservoir having a second maximum ink capacity less than the first maximum ink capacity;

the second ink injection port is communicated with the second ink storage chamber and is used for injecting ink into the second ink storage chamber;

the second buffer chamber is positioned below the second ink storage chamber and is used for communicating the second ink storage chamber with the external atmosphere, and the second buffer chamber has a second buffer chamber volume; and

the bottom surface of the second ink tank is provided with a plurality of ink grooves,

the second ink tank has a second height defined between the second ink injection port and the bottom surface of the second ink tank along a second direction perpendicular to the plane of the second ink injection port,

wherein the first height is the same as the second height, and a ratio of the first maximum ink capacity to the first buffer chamber volume is greater than or equal to 3.

According to the utility model discloses an ink jet printer, first china ink jar is the same with the height of second china ink jar. Thus, the first ink tank and the second ink tank can be easily provided without causing an excessive increase in the overall height of the ink jet printer. In addition, the ratio of the first maximum ink capacity of the first ink reservoir of the first ink tank to the first buffer chamber volume of the first buffer chamber is greater than or equal to 3, whereby the first ink reservoir volume can be increased without increasing or excessively increasing the height of the first ink tank, thereby increasing the amount of ink that can be accommodated by the first ink tank and facilitating miniaturization of the ink jet printer.

Optionally, the first reservoir has a first maximum width and the second reservoir has a second maximum width, the first maximum width being greater than the second maximum width.

Thereby, the volume of the first ink reservoir of the first ink tank can be further increased.

Optionally, a first absorber is disposed below the first ink tank, and a second absorber is disposed below the second ink tank.

This makes it possible to absorb ink leaking when the first ink tank and the second ink tank are filled with ink, and reduces the possibility of ink leaking to the outside of the ink jet printer.

Alternatively, a thickness of a portion of the first absorber located below the first ink tank is equal to a thickness of a portion of the second absorber located below the second ink tank.

Thereby, the first ink tank and the second ink tank can be maintained at the same set height.

Optionally, the first buffer chamber comprises a first top surface and has a first buffer chamber height defined along the first direction between the first top surface and the first ink tank bottom surface;

the second buffer chamber includes a second top surface and has a second buffer chamber height defined between the second top surface and the second ink tank bottom surface along the second direction;

wherein a maximum value of the first buffer chamber height is less than a maximum value of the second buffer chamber height.

Thus, the increase in the volume of the first buffer chamber of the first ink tank can be reduced, thereby facilitating the increase in the volume of the first ink reservoir chamber.

Optionally, the inkjet printer includes a printer body, the first and second ink tanks are mounted to the printer body, and the first and second ink injection ports are located in a same horizontal plane.

Therefore, the first ink injection port and the second ink injection port are positioned in the same horizontal plane, and the operation of injecting ink into the first ink tank and the second ink tank is facilitated to be simplified.

Drawings

The above and other aspects of the present invention will become more apparent and more readily appreciated from the following description of the exemplary embodiments of the invention taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a perspective view of a prior art ink jet printer, also showing an ink jet printer according to a preferred embodiment of the present invention;

FIG. 2 is a perspective view of an ink tank of a conventional ink jet printer;

FIG. 3 is a partial cut-away view of the ink jet printer shown in FIG. 1, with only one second ink tank shown and the other two second ink tanks omitted;

FIG. 4 is a perspective view of the ink tank of the ink jet printer of FIG. 1 in accordance with a preferred embodiment of the present invention;

FIG. 5 is a view of the first ink tank of the ink jet printer shown in FIG. 4, viewed from the left side;

FIG. 6 is a view of the second ink tank of the ink jet printer shown in FIG. 4, viewed from the left side; and

fig. 7 is a partially cut-away view of the inkjet printer shown in fig. 1 according to a preferred embodiment of the present invention.

Description of reference numerals:

an ink jet printer: 1. 100, a recording part: 9. 109 to

The printer body: 2. 102 frame portion: 3. 103 of a gas turbine

Height of the ink tank: d. T absorber: 5

A first ink tank: 10. 110 second ink tank: 20. 120 of a plant

A first ink reservoir: 11. 111 second ink reservoir: 21. 121 of a gas turbine

A first ink injection port: 12. 112 second ink injection port: 22. 122 are provided

A first buffer chamber: 14. 114 second buffer chamber: 24. 124 of a group of three-dimensional structure

A first ink supply portion: 15. 115 second ink supply portion: 25. 125 of

A first direction: f1 second direction: f2

Resin frame: 31. 32, 131, 132

First atmosphere communication portion: 16. 116 second atmosphere communication portion: 26. 126 to

First ink tank bottom surface: 17. 117 second ink tank bottom surface: 27. 127

A first top surface: 113 second top surface: 123

First film coating: 18. 118 second coating: 19. 119 (b) of a chemical reaction

And (3) third film coating: 28. 128 fourth coating: 29. 129A of

A first absorber: 150 second absorbent body: 154

A first supporting part: 153 second support part: 157

The first height: d1, T1 second height: d2 and T2

First maximum ink capacity: v1 first buffer chamber volume: v2

Second maximum ink capacity: v3 second buffer chamber volume: v4

First buffer chamber height: t3 second buffer chamber height: t4

First maximum width: w1 second maximum width: w2

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that embodiments of the invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring embodiments of the present invention.

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It is to be understood that the terms "upper", "lower", and the like are used herein for purposes of illustration only and are not to be construed as limiting.

Ordinal words such as "first" and "second" are referred to herein merely as labels, and do not have any other meaning, e.g., a particular order, etc. Also, for example, the term "first component" does not itself imply the presence of "second component", and the term "second component" does not itself imply the presence of "first component".

The ink jet printer according to the present invention will be described in detail with reference to the accompanying drawings. According to the utility model discloses an ink jet printer can also have various functions such as image scanner function, facsimile function, duplicator function except having the printing function. As the printing function, a double-sided image recording function of recording images on both sides of a recording sheet may be provided. Of course, the function other than the printing function is arbitrary.

Fig. 1 shows an ink jet printer 100 according to a first embodiment of the present invention, which is substantially in the shape of a rectangular parallelepiped.

The inkjet printer 100 includes a printer body 102. The printer main body 102 is provided with a recording unit 109 for ejecting ink to a recording medium (e.g., printing paper) and printing the ink. Of course, a scanner (not shown) or the like may be provided in the printer body 102 to perform scanning or the like. The printer body 102 has a frame portion 103 formed by most of the outer surface thereof, and supports and protects various components inside.

Further, the inkjet printer 100 also includes an ink tank provided in the frame portion 103 for containing ink to be supplied to the recording portion 109. According to the present invention, the inkjet printer 100 includes a first ink tank 110 and a second ink tank 120. Among them, the first ink tank 110 includes one, which is provided at the front left side of the frame portion 103, and is for containing black ink. The second ink tanks 120 include three, which are disposed side by side in the front right of the frame portion 103 and can contain cyan, pink, and yellow inks, respectively, so that the print contents of the inkjet printer 100 have more abundant colors.

However, it is understood that the number of the first and second ink tanks 110 and 120 is not limited to the above description. For example, the number of the first ink tanks 110 may also be two, three, or more, and/or the number of the second ink tanks 120 may also be one, two, four, or more. And different ink tanks may contain ink of the same color or different colors.

As shown in fig. 4, the first ink tank 110 mainly includes a first ink reservoir 111, a first ink injection port 112, a first buffer chamber 114, a first ink supply portion 115, and a first atmosphere communication portion 116.

Wherein the first ink reservoir 111 is for containing ink to be supplied to the recording portion 109. As shown in fig. 5, the first ink reservoir 111 has a first maximum ink capacity V1. The first ink injection port 112 is provided at the top of the first ink tank 110 and communicates with the first ink reservoir 111. The user can fill the first ink reservoir 111 with ink through the first ink injection port 112. The first ink supply portion 115 communicates with the recording portion 109 through an ink supply tube (not shown) to supply ink to the recording portion 109. The first buffer chamber 114 is located below the first ink reservoir 111, and communicates with the first ink reservoir 111 through a fine flow path. The first atmosphere communication portion 116 is provided at the top of the first buffer chamber 114, and has a passage (not shown) therein that communicates with the first buffer chamber 114. The first buffer chamber 114 can thereby communicate with the outside atmosphere through the first atmosphere communication portion 116. The first buffer chamber 114 has a first buffer chamber volume V2.

As described above, the first ink tank 110 may be used to contain black ink. And the amount of black ink used is generally large. Therefore, according to the present invention, the first ink tank 110 is configured such that the ratio of the first maximum ink capacity V1 to the first buffer chamber volume V2 is greater than 3. Thus, in the first ink tank 110, the first buffer chamber 114 occupies a smaller volume, while the first ink reservoir chamber 111 occupies a larger volume, so that the ink containing amount thereof can be increased without increasing the size of the first ink tank 110 itself.

Further, the first ink tank 110 has a first tank bottom surface 117. The ink tank height T of the first ink tank 110 is defined between the first ink filling port 112 and the first ink tank bottom surface 117 along a first direction F1 perpendicular to the plane of the first ink filling port 112.

According to the present invention, the entire first ink tank 110 may be constituted by the resin frame 131, the first cover film 118, and the second cover film 119, which are formed of a resin material. Specifically, the resin frame 131 constituting the main body of the first ink tank 110 may be formed in a mold by injection molding using a resin material. The resin frame 131 is provided with a plurality of chambers for forming the inner spaces of the first ink reservoir 111 and the first buffer chamber 114. The cavity has a lateral (toward the left or right) opening to facilitate separation of the resin frame 131 from the mold. The first cover film 118 is then attached to the resin frame 131 by a connecting means such as bonding or the like and covers the lateral openings of the chambers to form the first ink reservoir 111 and passages for communicating the plurality of first buffer chambers 114. Is connected to the other side of the resin frame 131 by a second coating film 119 to form a first buffer chamber 114.

Similarly, the second ink tank 120 may be entirely constituted by a resin frame 132 and the first and second coating films 128, 129 formed of a resin material. And the second ink tank 120 may be divided into several parts, a second ink storage chamber 121, a second ink injection port 122, a second buffer chamber 124, a second ink supply portion 125, and a second atmosphere communication portion 126, according to the function of each part. Wherein the second ink reservoir 121 has a second maximum ink capacity V3. And the second buffer chamber 124 has a second buffer chamber volume V4. The above-described structure of the second ink tank 120 functions substantially the same as that realized by the similar structure in the first ink tank 110, and will not be described in detail here. However, it is understood that the ratio of the second maximum ink volume V3 to the second buffer chamber volume V4 may be less than, equal to, or greater than 3.

The second ink tank 120 has a second tank bottom surface 127. The ink tank height T of the second ink tank 120 is defined between the second ink injection port 122 and the second ink tank bottom surface 127 along a second direction F2 perpendicular to the plane of the second ink injection port 122.

As shown in fig. 7, the first ink tank 110 has a first height T1, and the second ink tank 120 has a second height T2. In order to conveniently dispose the first ink tank 110 and the second ink tank 120 in the frame portion 103, the first height T1 is equal to the second height T2.

With continued reference to fig. 7, the first ink reservoir 111 of the first ink tank 110 has a first maximum width W1 defined in the left-right direction. The second ink tank 121 of the second ink tank 120 has a second maximum width W2 defined in the left-right direction. In general, the amount of black ink used is larger than the amount of ink of other colors. Therefore, preferably, the first maximum width W1 may be set to be greater than the second maximum width W2. Thereby, the size of the first ink reservoir 111 in the left-right direction can be increased, contributing to further increase in volume thereof.

Further, as shown in fig. 5, the first buffer chamber 114 of the first ink tank 110 has a first top surface 113. Wherein a first buffer chamber height T3 of the first buffer chamber 114 is defined along the first direction F1 between the first top surface 113 and the first ink tank bottom surface 117. The first buffer chamber height T3 varies with the position of the first top surface 113 due to the variation in height of the first top surface 113.

Similarly, as shown in fig. 6, the second buffer chamber 124 of the second ink tank 120 has a second top surface 123. Wherein a second buffer chamber height T4 of the second buffer chamber 124 is defined along the second direction F2 between the second top surface 123 and the second ink tank bottom surface 127. The second buffer chamber height T4 varies with the position of the second top surface 123 due to the variation in the height of the second top surface 123.

Preferably, as can be seen by comparing fig. 5 and 6, the maximum value of the first buffer chamber height T3 is smaller than the maximum value of the second buffer chamber height T4. As such, when the first height T1 of the first ink tank 110 is the same as the second height T2 of the second ink tank 120, the first buffer chamber 114 occupies a smaller volume of the first ink tank 110 than the second buffer chamber 124 occupies a smaller volume of the second ink tank 120. Accordingly, the first ink tank 110 occupied by the first ink reservoir 111 has a larger volume than the second ink tank 120 occupied by the second ink reservoir 121. Thereby facilitating an increase in the ink containing amount of the first ink tank 110.

Preferably, as shown in fig. 7, in the inkjet printer 100, the first ink injection port 112 of the first ink tank 110 and the second ink injection port 122 of the second ink tank 120 have the same height. That is, the first ink injection port 112 and the second ink injection port 122 are located in the same horizontal plane. Therefore, the ink tank can be conveniently replenished with ink by a user.

Further, a first absorber 150 is provided below the first ink tank 110, and a second absorber 154 is provided below the second ink tank 120, for absorbing ink that leaks out inadvertently when the first and second ink tanks 110 and 120 are filled with ink, respectively. The first absorbent 150 and the second absorbent 154 may be made of a material having a high water absorbency, such as sponge or cotton.

Although not shown in the drawings, it is understood that the first absorber 150 may also be disposed partially or entirely on the side of the first ink tank 110 and against the outer side of the first ink tank 110. The second absorbent 154 may also have a similar construction.

Preferably, when the first absorber 150 includes a portion located under the first ink tank 110 and the second absorber 154 includes a portion located under the second ink tank 120, the thickness of the portion of the first absorber 150 located under the first ink tank 110 may be made equal to the thickness of the portion of the second absorber 154 located under the second ink tank 120. In this way, the first ink tank 110 and the second ink tank 120 can have substantially the same height, which is advantageous for the first ink injection port 112 and the second ink injection port 122 to be located in the same horizontal plane to simplify the ink injection operation.

Further, as shown in fig. 7, a first support portion 153 may also be provided in the printer body 102. The first support part 153 is supported on the first tank bottom surface 117 of the first ink tank 110. Accordingly, the weight of the first ink tank 110 is borne by the first support part 153 and the frame part 103, and the first ink tank 110 is prevented from pressing on the first absorber 150 and affecting the ink absorbing capability thereof. A stopper structure (not shown) may be further provided on at least one of the first support part 153 and the first ink tank bottom surface 117 to limit movement of the first ink tank 110 in a horizontal direction with respect to the first support part 153 such that the first ink tank 110 remains fixed.

Similarly, a second support portion 157 may also be provided within the printer body 102. The second support 157 is supported on the second tank bottom surface 127 of the second ink tank 120. Thus, the weight of the second ink tank 120 is borne by the second support portion 157 and the frame portion 103, and the second ink tank 120 is prevented from pressing on the second absorber 154 to affect its ability to absorb ink. And a stopper structure (not shown) may be further provided on at least one of the second support 157 and the second ink tank bottom surface 127 to limit movement of the second ink tank 120 in the horizontal direction with respect to the second support 157, so that the second ink tank 120 remains fixed.

However, at least one of the first and second supporting parts 153 and 157 may be omitted from the frame part 103.

In addition, in fig. 5, only one second ink tank 120 is shown for the sake of simplicity. However, it is understood that other not-shown second ink tanks 120 may have the same configuration and arrangement as the shown second ink tanks 120.

According to the utility model discloses an ink jet printer, first china ink jar is the same with the height of second china ink jar. Therefore, the first ink tank and the second ink tank can be conveniently arranged in the printer body, and the overall height of the ink-jet printer is not excessively increased. In addition, the ratio of the first maximum ink capacity of the first ink reservoir of the first ink tank to the first buffer chamber volume of the first buffer chamber is greater than or equal to 3, whereby the first ink reservoir volume can be increased without increasing or excessively increasing the height of the first ink tank, thereby increasing the amount of ink that can be accommodated by the first ink tank and facilitating miniaturization of the ink jet printer.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "component" and the like, when used herein, can refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like, as used herein, may refer to one component as being directly attached to another component or one component as being attached to another component through intervening components. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that many more modifications and variations can be made in accordance with the teachings of the present invention, all of which fall within the scope of the invention as claimed.

Claims (6)

1. An ink jet printer, characterized in that it comprises:

a first ink tank, the first ink tank comprising:

a first reservoir for containing ink, the first reservoir having a first maximum ink capacity;

the first ink injection port is communicated with the first ink storage chamber and is used for injecting ink into the first ink storage chamber;

the first buffer chamber is positioned below the first ink storage chamber and is used for communicating the first ink storage chamber with the outside atmosphere, and the first buffer chamber has a first buffer chamber volume; and

the bottom surface of the first ink tank is provided with a plurality of ink tanks,

the first ink tank is provided with a first height which is defined between the first ink injection port and the bottom surface of the first ink tank along a first direction which is vertical to the plane of the first ink injection port; and

a second ink tank including:

a second ink reservoir for containing ink, the second ink reservoir having a second maximum ink capacity less than the first maximum ink capacity;

the second ink injection port is communicated with the second ink storage chamber and is used for injecting ink into the second ink storage chamber;

the second buffer chamber is positioned below the second ink storage chamber and is used for communicating the second ink storage chamber with the external atmosphere, and the second buffer chamber has a second buffer chamber volume; and

the bottom surface of the second ink tank is provided with a plurality of ink grooves,

the second ink tank has a second height defined between the second ink injection port and the bottom surface of the second ink tank along a second direction perpendicular to the plane of the second ink injection port,

wherein the first height is the same as the second height, and a ratio of the first maximum ink capacity to the first buffer chamber volume is greater than or equal to 3.

2. The inkjet printer of claim 1, wherein the first reservoir has a first maximum width and the second reservoir has a second maximum width, the first maximum width being greater than the second maximum width.

3. The ink jet printer of claim 1, wherein a first absorber is disposed below the first ink tank, and a second absorber is disposed below the second ink tank.

4. The inkjet printer of claim 3, wherein a thickness of a portion of the first absorber located below the first ink tank is equal to a thickness of a portion of the second absorber located below the second ink tank.

5. The inkjet printer of claim 1,

the first buffer chamber includes a first top surface and has a first buffer chamber height defined along the first direction between the first top surface and the first ink tank bottom surface;

the second buffer chamber includes a second top surface and has a second buffer chamber height defined between the second top surface and the second ink tank bottom surface along the second direction;

wherein a maximum value of the first buffer chamber height is less than a maximum value of the second buffer chamber height.

6. The inkjet printer of claim 1, including a printer body, said first and second ink tanks being mounted to said printer body, and said first and second ink injection ports being located in a same horizontal plane.

Images