Ink cartridges, ink bottles, and ink filling devices

Abstract

This invention provides an ink cartridge, an ink bottle, and an ink filling device. The ink cartridge includes a top cover with several ink bottle slots and several ink filling needles. Each ink filling needle is hollow and communicates with an ink bottle slot. A locking structure is provided within each ink bottle slot for engaging with a corresponding ink bottle. The ink bottle's head has an alignment structure that corresponds to the locking structure within the ink bottle slot of the ink cartridge. The ink filling device includes an ink cartridge and an ink bottle, with the ink bottle engaging with the corresponding ink bottle slot in the ink cartridge. This invention enables the reuse of printer ink cartridges by placing ink filling needles inside the ink cartridge that pass through the top cover, and then filling the cartridge with ink via the ink bottle and the ink filling needles.

Description

Technical Field

[0001] This invention relates to an ink cartridge, an ink bottle, and an ink filling device. Background Technology

[0002] Current printer ink cartridges are disposable, meaning they can only be used once. Once the ink inside is used up, the cartridge cannot be reused. The sheer number of discarded cartridges each year causes significant environmental pollution. Furthermore, printer ink cartridges have reusable value; simply throwing them away after use results in a waste of resources. However, printer ink cannot be directly refilled into the cartridge. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defect of the prior art that cannot directly fill ink into the printer ink cartridge, and to provide an ink cartridge, ink bottle and ink filling device.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] An ink cartridge includes a top cover, on which an ink bottle inlet and an ink needle are provided. The ink needle is hollow inside and communicates with the ink bottle inlet. The ink bottle inlet is characterized in that a locking structure is provided inside, which is used to engage with a corresponding ink bottle.

[0006] In this solution, a locking structure is set on the ink bottle slot on the top cover of the ink cartridge. The locking structure is used to engage with the ink bottle, so that when the user uses the ink bottle, the alignment structure of the ink bottle head matches the locking structure in the ink bottle slot, thus preventing the user from accidentally filling the wrong ink into the ink cartridge.

[0007] Preferably, the locking structure includes at least one protrusion that protrudes from the inner surface of the ink bottle inlet.

[0008] Preferably, the ink cartridge includes several ink bottle slots, each with a different locking structure, and each slot is used to engage with a corresponding ink bottle.

[0009] Preferably, the locking structure includes a plurality of protrusions that protrude from the inner surface of the ink bottle inlet, and the plurality of protrusions have a locking angle between them, and the locking angles of different locking structures are different from each other.

[0010] In this solution, by setting the engagement angle of the protrusions of the locking structure of different ink bottle slots to different angles, and by setting corresponding alignment structures on the ink bottles to correspond with the locking structures, it is ensured that a certain ink bottle slot can only be inserted into the corresponding ink bottle, thus avoiding users accidentally filling the wrong ink cartridge.

[0011] Preferably, the number of protrusions in different positioning structures is not exactly the same.

[0012] In this solution, by setting different numbers of slot structures, it is ensured that a certain ink bottle slot can only be inserted into the corresponding ink bottle, thus preventing users from interoperating and filling the wrong ink cartridge.

[0013] Preferably, the top cover is further provided with a protective barrier that extends from the edge of the top cover in the same direction as the ink injection needle, and the length of the protective barrier is greater than the length of the ink injection needle.

[0014] In this solution, a protective barrier is installed on the edge of the top cover. The length of the protective barrier is greater than the length of the ink injection needle, thereby preventing the ink injection needle from puncturing the user or piercing other objects. The protective barrier also protects the ink injection needle, preventing it from being damaged and rendered unusable.

[0015] Preferably, the ink cartridge further includes a base that engages with the top cover, and the base has a receiving cavity that matches the bottom of the ink cartridge to be refilled.

[0016] In this solution, by setting a receiving cavity in the base that matches the shape of the ink cartridge, the ink cartridge can be securely installed in the base.

[0017] Preferably, the base is provided with a plurality of L-shaped positioning plates, two positioning plates are fixedly arranged side by side on one side of the inner wall of the base, two sets of positioning plates are arranged opposite to each other on both sides of the base, and the plurality of plates form the receiving cavity.

[0018] In this solution, several L-shaped positioning plates are set inside the base. These L-shaped positioning plates position the ink cartridges installed inside the ink cartridge and restrict the freedom of movement of the ink cartridges, so that the ink cartridges can be reliably positioned in the base without moving.

[0019] Preferably, recesses are provided on both opposite side walls of the base, with the lower edge of the recess being lower than the upper edge of the receiving cavity.

[0020] In this design, a notch is provided on the side wall of the base, making it easier to remove the ink cartridge from the base.

[0021] Preferably, the base is provided with an ink cartridge opening device, which includes two latching parts, which are respectively disposed on both sides of the base, and each of the two latching parts has a slot on the side wall facing the inner side of the base; the two slots and the base form a latching cavity for latching the top cover of the ink cartridge.

[0022] In this solution, by integrating the ink cartridge opening device and the ink refill cartridge into one unit, the ink cartridge opening device at the bottom of the ink refill cartridge can open the top cover of the ink cartridge when adding ink to the ink cartridge, thus preventing the ink cartridge opening device from being lost and improving the ease of use and convenience of the ink refill cartridge.

[0023] An ink bottle for an ink refill cartridge is characterized in that the bottle head is provided with an alignment structure, which cooperates with the locking structure in the ink bottle slot of the ink refill cartridge as described above.

[0024] In this solution, an alignment structure is provided on the ink bottle head, which matches the locking structure of the ink bottle socket on the ink cartridge. This means that the correct ink bottle is inserted as long as the user can insert it into the ink bottle plug, thus improving ease of use.

[0025] Preferably, the ink bottle has an alignment structure at its head, the alignment structure including at least one alignment point that protrudes from the circumferential outer surface of the bottle head; the alignment structure includes at least one protrusion, and the alignment point cooperates with the protrusion.

[0026] Preferably, the ink bottle has a plurality of alignment structures at its bottle head, each alignment structure including at least one alignment point that protrudes from the circumferential outer surface of the bottle head; the alignment structure includes a plurality of protrusions that engage with the alignment points.

[0027] Preferably, the ink bottle further includes an air vent and an air vent membrane, the air vent being disposed at the top of the ink bottle, and the air vent membrane being detachably and sealingly connected to the air vent.

[0028] In this solution, by setting a vent hole on the top of the ink bottle, when the ink bottle is not in use, the vent membrane is sealed to the vent hole, the air pressure inside the ink bottle remains constant, and the ink inside the ink bottle will not flow out; when the ink bottle needs to be used to refill the ink cartridge, the vent membrane is torn off, and the ink inside the ink bottle can then flow out.

[0029] Preferably, the ink bottle has an ink outlet, and the ink bottle is provided with a sealing ring, which is sealed to the ink outlet.

[0030] In this solution, a sealing ring is installed at the ink outlet to prevent ink leakage from the ink bottle during storage.

[0031] An ink refilling device is characterized in that the ink refilling device includes an ink cartridge and an ink bottle, wherein the ink bottle is snapped into the ink bottle socket corresponding to the ink cartridge.

[0032] The positive and progressive effects of this invention are as follows:

[0033] The ink cartridge, ink bottle, and ink filling device of the present invention achieve the reuse of printer ink cartridges by setting an ink filling needle inside the ink cartridge, passing through the top cover of the ink cartridge, and then filling the ink cartridge with ink through the ink bottle via the ink filling needle. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the ink-filling device of the present invention.

[0035] Figure 2 This is a schematic diagram of the ink cartridge structure of the present invention.

[0036] Figure 3 This is a schematic diagram of the base of the ink cartridge of the present invention.

[0037] Figure 4 This is a schematic diagram of the base of the ink cartridge of the present invention.

[0038] Figure 5 This is a schematic diagram of the ink cartridge opening device of the ink cartridge of the present invention opening the top cover of the ink cartridge.

[0039] Figure 6 This is a schematic diagram of the ink cartridge structure of the present invention.

[0040] Figure 7 This is a schematic diagram of the base of the ink cartridge of the present invention.

[0041] Figure 8 This is a schematic diagram of the structure of the top cover of the ink cartridge of the present invention.

[0042] Figure 9 This is a schematic diagram of the structure of the top cover of the ink cartridge of the present invention.

[0043] Figure 10 This is a top view of the ink cartridge for refilling monochrome ink cartridges according to the present invention.

[0044] Figure 11 This is a top view of the ink cartridge for refilling multi-color ink cartridges according to the present invention.

[0045] Figure 12 This is a schematic diagram of the structure of the ink bottle of the present invention.

[0046] Figure 13 This is a schematic diagram of the internal structure of the ink bottle of the present invention.

[0047] Figure 14 This is a schematic diagram of the structure of the ink bottle of the present invention.

[0048] Figure 15 This is a schematic diagram of the structure of the ink bottle of the present invention.

[0049] Figure 16 This is a schematic diagram of the structure of the ink bottle of the present invention.

[0050] Explanation of reference numerals in the attached figures:

[0051] Ink cartridge 1

[0052] Top cover 11

[0053] Ink bottle inlet 111

[0054] Card slot structure 1111

[0055] Ink injection needle 112

[0056] Protective fencing 113

[0057] Base 12

[0058] Positioning plate 121

[0059] Ink cartridge opening device 122

[0060] Connector 1221

[0061] Ink Bottle 2

[0062] Position 21

[0063] Air-conducting membrane 22

[0064] Sealing ring 23

[0065] Ink injection device 3

[0066] Ink cartridge 4

[0067] Ink cartridge top cover 41 Detailed Implementation

[0068] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0069] like Figure 2 , Figure 6 , Figure 8 and Figure 9 As shown, the present invention provides an ink cartridge 1, which includes an upper cover 11. The upper cover 11 is provided with an ink bottle inlet 111 and an ink needle 112. The ink needle 112 is hollow inside and is connected to the ink bottle inlet 111. The ink bottle inlet 111 is provided with a locking structure 1111, which is used to engage with the corresponding ink bottle 2.

[0070] The upper surface of the cover 11 is provided with an ink bottle inlet 111, and the lower surface of the cover 11 is fixedly provided with an ink filling needle 112. The ink bottle inlet 111 has a through hole that connects to the corresponding ink filling needle 112. When adding ink, the ink filling needle 112 is inserted into the corresponding ink filling hole of the ink cartridge 4, and the ink bottle 2 is inserted into the ink bottle inlet 111. The ink in the ink bottle 2 flows into the ink cartridge 4 through the through hole of the ink bottle inlet 111 and the corresponding ink filling needle 112. Thus, the ink in the ink bottle 2 is injected into the ink cartridge 4 through the ink filling needle 112. The ink bottle inlet 111 is provided with a locking structure 1111. A number of ink bottle inlets 111 are provided on an ink cartridge cover 41 for inserting ink bottles 2 of different colors. The locking structures 1111 of different ink bottle inlets 111 are also different. The bottle heads of different ink bottles 2 are provided with corresponding alignment points 21, and the alignment points 21 of the corresponding color ink bottle 2 match the corresponding locking structures 1111. This prevents users from accidentally injecting ink of different colors into ink cartridge 4.

[0071] like Figure 10 As shown, the slot structure 1111 includes at least one protrusion that protrudes from the inner surface of the ink bottle inlet 111.

[0072] The ink dispenser for refilling ink into monochrome ink cartridge 4 has only one ink bottle inlet 111, and the locking structure 1111 on the ink bottle inlet 111 also has only one protrusion. The central angle of the protrusion is larger than the central angle of the single protrusion used for multicolor ink cartridge 4.

[0073] like Figure 11 As shown, the ink cartridge 1 for refilling color ink cartridges includes several ink bottle slots 111. The locking structures 1111 of the several ink bottle slots 111 are all different and are used to lock into the corresponding ink bottles 2.

[0074] The ink cartridge 1, used for refilling the color ink cartridge 4, has three ink bottle slots 111, each corresponding to one of the three ink refill needles 112. The locking structures 1111 on the three ink bottle slots 111 are different, and each slot is used to connect to an ink bottle 2 of a different color. The ink bottles 2 of different colors have corresponding alignment points 21 on their caps, ensuring that only the alignment point 21 on the cap of the corresponding color ink bottle 2 can mate with the locking structure 1111 on the ink bottle slot 111.

[0075] The locking structure 1111 includes several protrusions that protrude from the inner surface of the ink bottle inlet 111. The protrusions have a locking angle between them, and the locking angles of different locking structures 1111 are different from each other.

[0076] The locking structure 1111 may include multiple protrusions. Multiple protrusions are provided circumferentially in an ink bottle holder 111, each protrusion having the same shape, but the locking angles between the protrusions of different ink bottle holders 111 are different. The locking angle is the central angle between corresponding two or more protrusions of an ink bottle holder 111. For example... Figure 11 As shown, the engagement angle of the protrusion of the ink bottle socket 111 corresponding to the letter C is 90°, the engagement angle of the protrusion of the ink bottle socket 111 corresponding to the letter Y is 180°, and the engagement angle of the protrusion of the ink bottle socket 111 corresponding to the letter M is 120°.

[0077] The number of protrusions in different card slot structures 1111 is not exactly the same.

[0078] The number of protrusions on the inlet 111 of different ink bottles may vary. For example... Figure 11 As shown, the ink bottle slot 111 corresponding to the letter C has two protrusions, the ink bottle slot 111 corresponding to the letter Y has two protrusions, and the ink bottle slot 111 corresponding to the letter M has three protrusions. Although the number of protrusions in the ink bottle slots 111 corresponding to the letters C and Y is the same, the angle between the protrusions in the ink bottle slots 111 corresponding to the letters C and Y is different, thus preventing the ink bottle 2 from being inserted incorrectly.

[0079] like Figure 9 As shown, the upper cover 11 is also provided with a protective barrier 113. The protective barrier 113 extends from the edge of the upper cover 11 in the same direction as the ink injection needle 112, and the length of the protective barrier 113 is greater than the length of the ink injection needle 112.

[0080] A protective barrier 113 is fixedly attached to the top cover 11. The protective barrier 113 extends downward from the edge of the top cover 11, and there are gaps between the protective barriers 113. The protective barrier 113 is made of a thin plastic sheet, and its length is greater than the length of the ink filling needle 112. When the top cover 11 is placed alone, because the length of the protective barrier 113 is greater than the length of the ink filling needle 112, it prevents the ink filling needle 112 from accidentally puncturing people or objects. At the same time, the protective barrier 113 also protects the ink filling needle 112 from being damaged by collisions with other objects or from the ink filling needle 112 breaking off from the top cover 11.

[0081] like Figure 4 and Figure 7 As shown, the ink cartridge 1 also includes a base 12, which is snapped into the top cover 11. The base 12 has a receiving cavity that matches the bottom of the ink cartridge 4 to be filled with ink.

[0082] The base 12 has a cavity that matches the shape of the ink cartridge 4 to be refilled. The ink cartridge 4 is not a regular cuboid; one side is slightly thicker than the other. To ensure that the ink refill needle 112 can be smoothly inserted into the ink refill hole on the ink cartridge 4 when the top cover 11 and the base 12 are closed, it is necessary to ensure that the ink cartridge 4 is placed horizontally inside the ink cartridge 1. The bottom of the cavity inside the ink cartridge 1 is higher on one side and lower on the other to match the ink cartridge 4, thus ensuring that the upper surface of the ink cartridge 4 can be placed horizontally after it is placed in the base 12 of the ink cartridge 1.

[0083] The base 12 is provided with several L-shaped positioning plates 121. Two positioning plates 121 are fixedly arranged side by side on one side of the inner wall of the base 12. Two sets of positioning plates 121 are arranged opposite to each other on both sides of the base 12, and a receiving cavity is formed between the plates.

[0084] Positioning plates 121 are fixedly installed inside the base 12. One side of the positioning plate 121 is fixedly connected to the side wall of the base 12, and the side of the positioning plate 121 away from the side wall of the base 12 is used to support the ink cartridge to be refilled. Two positioning plates 121 are arranged in parallel on one side of the base 12, and the two sets of positioning plates are arranged opposite each other on the two side walls of the base 12. When the ink cartridge 4 is placed in the base 12, the two opposing positioning plates 121 can position the ink cartridge 4 and prevent the ink cartridge 4 from moving inside the base 12. The positioning plates 121 in various directions on the side wall of the base 12 define the position of the ink cartridge 4 to be refilled within the base 12.

[0085] Recesses are provided on both opposite side walls of the base 12, with the lower edge of the recess being lower than the upper edge of the receiving cavity.

[0086] On the opposite side walls of the base 12, there are recesses of the same shape, which can be arranged as follows: Figure 7 As shown, the notch is located on the long side of the base 12, and the notch can also be... Figure 3 The ink cartridge 4 is shown to be located on the short side of the base 12. A notch is provided on the base 12 to facilitate the removal of the ink cartridge 4 from the base 12.

[0087] like Figure 2 , Figure 3 and Figure 5 As shown, the base 12 is provided with an ink cartridge opening device 122. The ink cartridge opening device 122 includes two latching parts 1221, which are respectively disposed on both sides of the base 12. Each of the two latching parts 1221 has a slot on the side wall facing the inside of the base 12. The two slots and the base 12 form a latching cavity for latching the ink cartridge cover 41.

[0088] Two latching portions 1221 are disposed opposite each other on both sides of the base 12, and two slots of the same size are disposed opposite each other within the latching portions 1221. A latching cavity is formed between the two slots and the base 12. When the ink cartridge opening device 122 is used to open the ink cartridge cover 41, the ink cartridge cover 41 is latched into the latching cavity so that the ink cartridge opening device 122 can pry the ink cartridge cover 41 open. The ink cartridge opening device 122 also has a limiting groove, which is disposed between the slots and the base 12. The depth of the limiting groove can be set according to the protrusion on the ink cartridge cover 41. The limiting groove is used to prevent the ink cartridge cover 41 from extending too far into the ink cartridge opening device 122, which would result in insufficient opening torque during use, making it difficult to open the ink cartridge cover 41. The limiting groove makes it easier for users to open the ink cartridge cover 41 using the ink cartridge opening device 122, improving the ease of use of the ink cartridge opening device 122. The limiting groove and the slot extend from the same side end face of the base 12 along the axis of the base 12 toward the interior of the base 12.

[0089] like Figure 12 , Figure 14 and Figure 15 As shown, the present invention also provides an ink bottle 2, the bottle head of the ink bottle 2 is provided with an alignment structure, the alignment structure and the locking structure 1111 in the ink bottle inlet 111 of the ink cartridge 1 as described above.

[0090] The alignment structure of the ink bottle 2 is designed to snap into the ink bottle slot 111 of the corresponding ink cartridge 1. The alignment structure of the ink bottle 2 has different shapes for different colors of ink bottles to prevent the ink bottle 2 from being inserted into the wrong ink bottle slot 111 of the ink cartridge 1.

[0091] like Figure 15 As shown, the ink bottle 2 has an alignment structure at its head, which includes at least one alignment point 21 that protrudes from the circumferential outer surface of the bottle head; the positioning structure 1111 includes at least one protrusion, and the alignment point 21 cooperates with the protrusion.

[0092] The alignment point 21 of the ink bottle 2 used to refill the monochrome ink cartridge 4 corresponds to the ink bottle inlet 111 used to refill the monochrome ink cartridge 1.

[0093] like Figure 14 As shown, the ink bottle 2 has several alignment structures at its bottle head. Each alignment structure includes at least one alignment point 21, which protrudes from the circumferential outer surface of the bottle head. The positioning structure 1111 includes several protrusions, and the alignment point 21 cooperates with the protrusions.

[0094] The alignment structures of the ink bottles 2 filled with different colors of ink are different. The alignment structure includes alignment points 21, and the included angle between the alignment points 21 of the ink bottles 2 filled with different colors of ink is different. The alignment points 21 of the ink bottles 2 filled with different colors of ink correspond to the locking structure 1111 on the ink bottle inlet 111 of the ink cartridge 1.

[0095] like Figure 16 As shown, the ink bottle 2 also includes an air vent and an air vent membrane 22. The air vent is located on the top of the ink bottle 2, and the air vent membrane 22 is detachably and sealingly connected to the air vent.

[0096] An air vent is located at the top of ink bottle 2 and connects to the inside of ink bottle 2. Before use, the air vent membrane 22 seals the air vent, preventing ink from flowing out of ink bottle 2 due to pressure imbalance. When ink bottle 2 is needed, the air vent membrane 22 is removed, allowing ink to flow out from the ink outlet.

[0097] like Figure 13 As shown, ink bottle 2 has an ink outlet, and ink bottle 2 is equipped with a sealing ring 23 inside, which is sealed to the ink outlet.

[0098] When ink bottle 2 is not in use, the sealing ring 23 seals the ink outlet of ink bottle 2. When ink bottle 2 is needed, pierce the sealing ring 23 of the ink outlet with a needle, install ink bottle 2 on ink bottle inlet 111 of ink cartridge 1, and then tear off the air guide film 22 on ink bottle 2 to add ink to ink cartridge 4.

[0099] like Figure 1 As shown, the present invention also provides an ink filling device 3, which includes an ink filling box 1 and an ink bottle 2 as described above, wherein the ink bottle 2 is snapped into the ink bottle socket 111 corresponding to the ink filling box 1.

[0100] Open the top cover 11 and base 12 of the ink cartridge 1 of the ink filling device 3, put the ink cartridge 4 to be filled into the base 12 and close the top cover 11 of the ink cartridge 1, insert the corresponding ink bottle 2 into the ink bottle inlet 111 on the ink cartridge 1, and tear off the air guide film 22 on the ink bottle 2 to fill the ink cartridge 4 with ink.

[0101] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. An ink cartridge, the ink cartridge comprising a top cover, the top cover having an ink bottle inlet and an ink injection needle, the ink injection needle being hollow and communicating with the ink bottle inlet, characterized in that, The ink bottle inlet is provided with a locking structure, which is used to engage with the corresponding ink bottle. The ink cartridge also includes a base, which is snapped into the top cover. The base has a receiving cavity that matches the bottom of the ink cartridge to be filled. The bottom of the base is provided with an ink cartridge opening device, which includes two latching parts. The latching parts are respectively disposed on both sides of the base, and each of the two latching parts has a slot on the side wall facing the inner side of the base; the two slots and the base form a latching cavity for latching the top cover of the ink cartridge. The base is provided with several L-shaped positioning plates. One side of each positioning plate is fixedly connected to the side wall of the base. The side of the positioning plate away from the side wall of the base is used to support the ink to be injected. Two positioning plates are arranged side by side on one side of the inner wall of the base. Two sets of positioning plates are arranged opposite to each other on the two side walls of the base. The cavity is formed between the plates. The ink cartridge opening device also includes a limiting groove, which is located between the slot and the base. The depth of the limiting groove is set according to the protrusion on the ink cartridge cover. The limiting groove is used to prevent the ink cartridge cover from extending too far into the ink cartridge opening device. The limiting groove and the slot are staggered in the thickness direction of the ink cartridge opening device.

2. The ink cartridge as described in claim 1, characterized in that, The locking structure includes at least one protrusion that protrudes from the inner surface of the ink bottle inlet.

3. The ink cartridge as described in claim 1, characterized in that, The ink cartridge includes several ink bottle slots, each with a different locking structure, and each slot is used to engage with a corresponding ink bottle.

4. The ink cartridge as described in claim 3, characterized in that, The locking structure includes several protrusions that protrude from the inner surface of the ink bottle inlet. The protrusions have a locking angle between them, and the locking angles of different locking structures are different.

5. The ink cartridge as described in claim 4, characterized in that, The number of protrusions in different positioning structures is not exactly the same.

6. The ink cartridge as described in claim 1, characterized in that, The top cover is also provided with a protective barrier, which extends from the edge of the top cover in the same direction as the ink injection needle, and the length of the protective barrier is greater than the length of the ink injection needle.

7. The ink cartridge as described in claim 1, characterized in that, The base has recesses on its opposite side walls, with the lower edge of the recesses being lower than the upper edge of the receiving cavity.

8. An ink bottle for use in ink cartridges, characterized in that, The ink bottle has an alignment structure at its head, which cooperates with the locking structure in the ink bottle slot of the ink cartridge as described in any one of claims 1-7.

9. The ink bottle as described in claim 8, characterized in that, The ink bottle has an alignment structure at its head, the alignment structure including at least one alignment point that protrudes from the circumferential outer surface of the bottle head; the alignment structure includes at least one protrusion, and the alignment point cooperates with the protrusion.

10. The ink bottle as described in claim 8, characterized in that, The ink bottle has a plurality of alignment structures at its head, each alignment structure including at least one alignment point that protrudes from the circumferential outer surface of the bottle head; the alignment structure includes a plurality of protrusions that engage with the alignment points.

11. The ink bottle as described in claim 8, characterized in that, The ink bottle also includes an air vent and an air vent membrane. The air vent is located at the top of the ink bottle, and the air vent membrane is detachably and sealingly connected to the air vent.

12. The ink bottle as described in claim 8, characterized in that, The ink bottle has an ink outlet, and a sealing ring is provided inside the ink bottle, which is sealed to the ink outlet.

13. An ink-filling device, characterized in that, The ink filling device includes an ink cartridge as described in any one of claims 1-7 and an ink bottle as described in any one of claims 8-12, wherein the ink bottle is snapped into the ink bottle slot corresponding to the ink cartridge.

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