Printing device, printing system, and ink container

Abstract

The utility model discloses a printing device, printing system and ink container, relate to printing technical field. The printing device includes ink inflow part and ink supply needle, ink inflow part, the ink inflow part is used for receiving ink, the ink inflow part is linked with ink storage space, and ink supply needle communicates with ink storage space, and the inner peripheral surface of ink supply needle is provided with the flow channel, and in the extension direction of ink supply needle, the end of inner peripheral surface is provided with at least two lines not on the same plane. The printing device and ink container provided by the utility model embodiment can reduce that ink splashes to the printer, reduce the pollution to the printer, reduce the influence to the next ink injection.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing technical field especially relates to a printing device, printing system and ink container. BACKGROUND

[0002] The printer in prior art has an ink tank for storing ink, when the ink in the ink tank is used up, the ink tank needs to be supplemented with an ink bottle. The ink tank has an ink supply needle, the ink supply needle is mostly a flat head ink supply needle, when the ink bottle is installed on the ink tank, the ink supply needle is in communication with a storage chamber in the ink bottle, the storage chamber in the ink bottle is in communication with a channel in the ink supply needle to form an ink flow path, and the ink in the ink bottle flows into the ink tank. The ink bottle on the market has many styles, the ink outlet of the ink bottle adopts a movable valve core or a self-sealing valve to seal the ink bottle, but the contact surface of the valve core of the ink bottle and the ink supply needle is a flat structure.

[0003] However, when the ink bottle is separated from the ink supply needle, the lower end surface of the ink bottle is separated from the upper end surface of the ink supply needle at the moment, the circular flat surface of the ink supply needle is easy to form a liquid film, when the air pressure in the ink tank is large, the liquid film is easy to break under the air pressure of the ink bottle, causing the ink to splash and pollute the printer, if the air pressure is too small, the liquid film is exposed to the atmosphere, forming liquid precipitation to affect the next ink injection. SUMMARY

[0004] The utility model embodiment provides a kind of printing device, printing system and ink container, to solve the problem that when ink bottle separates from ink supply needle, the lower end surface of the ink bottle is separated from the upper end surface of the ink supply needle at the moment, the circular flat surface of the ink supply needle can form a layer of liquid film.

[0005] In a possible implementation, the printing device comprises:

[0006] An ink inflow portion is arranged on the ink supply needle and is in communication with the ink storage space, and the ink inflow portion is used to receive ink.

[0007] The ink supply needle is provided with an inner circumferential surface forming a flow channel, and the end portion of the inner circumferential surface is provided with at least two lines not in the same plane in the extension direction of the ink supply needle.

[0008] In a possible implementation, the side of the ink supply needle away from the ink storage space is provided with a plurality of raised portions in the extension direction of the ink supply needle, the plurality of raised portions are arranged at intervals along the circumferential direction of the ink supply needle, and a gap is arranged between adjacent two raised portions.

[0009] In a possible implementation, the cross-sectional area of the raised portion gradually decreases in the direction away from the ink storage space.

[0010] In a possible implementation, the ink supply needle has an outer wall surface, and the inner peripheral surface includes an end surface, and the end portion is an outer end line where the end surface connects with the outer wall surface.

[0011] In a possible implementation, the inner peripheral surface further includes an inner wall surface, and the end surface is provided with an inner end line connected with the inner wall surface, and the inner end line includes at least two lines not in the same plane.

[0012] In a possible implementation, the inner peripheral surface includes at least two intersecting planes; or the inner peripheral surface includes at least two intersecting curved surfaces.

[0013] In a possible implementation, the ink supply needle is internally provided with a partition wall, the partition wall extends along the extension direction of the ink supply needle, and the partition wall is used to divide the flow channel into two parts.

[0014] In a possible implementation, in the extension direction of the ink supply needle, the raised portion is arranged on the side of the partition wall away from the ink storage space.

[0015] In a second aspect, the utility model provides a printing system, and the printing system comprises:

[0016] An ink container;

[0017] An ink inflow portion, the ink inflow portion is used for receiving ink, and the ink inflow portion is used for being connected with the ink storage space.

[0018] An ink supply needle, the ink supply needle is arranged on the ink inflow portion and is communicated with the ink storage space, the ink supply needle is provided with an inner peripheral surface forming a flow channel, and in the extension direction of the ink supply needle, an end portion of the inner peripheral surface is provided with at least two lines not in the same plane.

[0019] In a third aspect, the utility model provides an ink container, which is detachably connected with the ink inflow portion of the printing device as described in the first aspect, and comprises an ink supply portion connected with the ink supply needle of the printing device, and the shapes of the two end surfaces of the ink supply portion and the ink supply needle opposite in the ink flow direction are inconsistent.

[0020] The utility model discloses a printing device, printing system and ink container, through the end portion of the inner peripheral surface is provided with at least two lines not in the same plane, can make the end portion of the ink supply needle not in a plane, thereby making the liquid not even spread in the end portion of the ink supply needle, the end portion of the ink supply needle is not easy to form liquid film under the action of liquid surface tension, and then can reduce the ink splashing to the printer, reduce the pollution to the printer, reduce the influence to the next ink injection. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative labor under the premise of not paying the creative labor.

[0022] Figure 1a The structure schematic diagram of the ink inflow part on the ink tank is provided for the embodiments of the present application.

[0023] Figure 1b The cross-sectional schematic diagram of the ink inflow part in the Figure 1a

[0024] Figure 2 The structure schematic diagram of the ink container is provided for the embodiments of the present application.

[0025] Figure 3 The explosion schematic diagram of the ink container is provided for the embodiments of the present application.

[0026] Figure 4 The structure schematic diagram of the ink container not including the elastic member and the moving valve is provided for the embodiments of the present application.

[0027] Figure 5 The cross-sectional schematic diagram of the ink container is provided for the embodiments of the present application.

[0028] Figure 6 The structure schematic diagram of the bottle nozzle of the ink container is provided for the embodiments of the present application.

[0029] Figure 7 The cross-sectional schematic diagram of the ink container and the ink inflow part is provided for the embodiments of the present application.

[0030] Explanation of reference signs:

[0031] 111-ink container; 100-ink supply part; 1-bottle nozzle; 11-ink outlet; 12-protrusion; 13-positioning part; 2-valve abutting part; 21-through hole; 22-protruding part; 24-first space; 23-second space; 3-moving valve core; 4-elastic member; 5-valve mounting part; 51-outer fixing part; 52- accommodating part; 6-container main body; 61-outlet; 62-rib; 7-sealing film; 8-ink inflow part; 81-mounting recess; 82-engaging part; 83-ink supply needle; 831-interval wall; 832-outer wall surface; 8321-raised part;

[0032] 833-inner peripheral surface; 8331-outer end line; 8332-inner end line; 833a-end surface; 833b-inner wall surface. DETAILED DESCRIPTION ​

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0034] It should be noted that the terms "first", "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implying the number of the indicated technical features. Therefore, the features with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0035] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected or can communicate with each other; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0037] In the above description, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0038] As described in the background section, when the ink bottle is withdrawn from the ink supply needle, at the moment the lower end of the ink bottle separates from the upper end of the ink supply needle, a liquid film easily forms on the circular plane of the ink supply needle. When the air pressure inside the ink tank is high, this liquid film is easily broken under the air pressure of the ink bottle, causing ink to splash and contaminate the printer. If the air pressure is too low, the liquid film is exposed to the atmosphere, forming liquid sediment that affects the next ink refill.

[0039] To address the aforementioned problems, this utility model provides a printing device, printing system, and ink container. The ends of the ink supply needles are positioned so that the liquid cannot spread evenly at the ends of the ink supply needles. The ends of the ink supply needles are less likely to form a liquid film under the action of liquid surface tension, which can reduce ink splashing onto the printer, reduce printer contamination, and reduce the impact on the next ink refill.

[0040] The printing device, printing system, and ink container provided in the embodiments of this utility model will be described in detail below with reference to specific examples.

[0041] In a first aspect, embodiments of the present invention provide a printing apparatus including an ink reservoir for storing ink.

[0042] An ink canister has an ink storage space to hold ink. The ink canister is roughly cube-shaped and is installed in the printing device. The ink canister can be installed inside or outside the printing device, as long as it is connected to the developing device of the printing device so that the ink in the ink can be developed on the developing medium. There can be multiple ink canisters, which can store the same color of ink or store different colors.

[0043] Reference Figure 1a As shown, Figure 1a This is a schematic diagram of the ink inflow section on the ink can provided in an embodiment of this application. Figure 1b This is a cross-sectional schematic diagram of the ink inflow section.

[0044] When the printing device is in normal position, an ink inlet section 8 is provided above the ink tank for ink to enter. The ink inlet section 8 has a mounting recess 81, which is circumferential in shape. A locking part 82 and an ink supply needle 83 are provided in the middle of the mounting recess 81. The locking part 82 is located below the ink supply needle 83. The ink supply needle 83 extends and protrudes from the locking part 82. The ink supply needle 83 has a flow channel that connects the inside and outside of the ink tank. The ink supply needle 83 is connected to the ink storage space.

[0045] The ink supply needle 83 extends along the X direction.

[0046] See Figure 1a and Figure 1b As shown, the ink supply needle 83 is composed of a partition wall 831 and an outer wall surface 832. The partition wall 831 extends along the extension direction of the ink supply needle 83. The partition wall 831 forms two separate flow channels inside the ink supply needle 83. That is, the flow channels are divided into two parts, so that gas and liquid can be separated when ink enters the ink tank from the ink supply needle 83. When the ink tank is replenished with ink, the ink enters the ink tank. The air pressure inside the ink tank is greater than the outside air pressure. If the excess gas inside the ink tank is not discharged, it will affect the normal replenishment of ink. Therefore, the gas inside the ink tank also needs to be discharged from the ink supply needle 83. When gas and liquid flow together, the upward overflowing air bubbles may affect the speed of the downward flowing ink. By setting the partition wall 831 to separate the gas and liquid, the ink replenishment speed can be accelerated.

[0047] In some examples, the ink supply needle 83 is provided with an inner peripheral surface 833 forming a flow channel. The inner peripheral surface is connected to the outer wall surface 832, and the inner peripheral surface 833 and the outer wall surface 832 form the surface of the ink supply needle 83.

[0048] The inner circumferential surface 833 may include at least two intersecting planes. Alternatively, the inner circumferential surface 833 may also include at least two intersecting curved surfaces. Alternatively, the inner circumferential surface 833 may also include at least one intersecting plane and at least one curved surface.

[0049] In the extending direction of the ink supply needle 83, the end of the inner circumferential surface 833 is located on the side of the ink supply needle 83 away from the ink storage space, and the end of the inner circumferential surface 833 is provided with at least two lines that are not on the same plane. This arrangement ensures that the ends of the ink supply needle 83 are not in the same plane, thus preventing the liquid from spreading evenly at the end of the ink supply needle 83. The end of the ink supply needle 83 is less likely to form a liquid film under the action of liquid surface tension, thereby reducing ink splashing onto the printer, reducing printer contamination, and reducing the impact on the next ink refill.

[0050] In one possible implementation, a plurality of raised portions 8321 are provided on the side of the ink supply needle 83 away from the ink storage space along the extending direction of the ink supply needle 83. The plurality of raised portions 8321 are spaced apart along the circumference of the ink supply needle 83, and a gap is provided between two adjacent raised portions 8321. With this configuration, when the ink container 111 is withdrawn from the ink supply needle 83, the liquid bubble formed in the ink supply needle 83 moves towards the outside of the ink container along the extending direction of the ink supply needle 83 under the action of air pressure in the ink tank. During this process, the gap between the raised portions 8321 causes the liquid bubble to break. After the liquid bubble breaks, the raised portions 8321 can prevent ink splashing, thereby reducing ink splashing onto the printer and reducing contamination of the printer.

[0051] In some examples, along the extension direction of the ink supply needle 83, triangular raised portions 8321 are spaced apart at the end of the ink supply needle 83 away from the ink tank, with a gap between adjacent raised portions 8321. In the direction away from the ink tank, that is, away from the ink storage space, the cross-sectional area of ​​the raised portions 8321 gradually decreases. This arrangement allows for an irregular shape at the end of the ink supply needle 83, preventing the liquid from spreading evenly at the end of the ink supply needle 83.

[0052] The raised portion 8321 is further away from the engaging portion 82 relative to the partition wall 831, that is, in the extending direction of the ink supply needle 83, the raised portion 8321 is located on the side of the partition wall 831 away from the ink storage space.

[0053] In other possible implementations, the raised portions 8321 can also be of other shapes, as long as there are gaps between the raised portions 8321 that allow ink to flow in. In this embodiment, the number of raised portions 8321 is 4, but the number of raised portions 8321 can also be other.

[0054] In one possible implementation, see Figure 1a and Figure 1b As shown, the inner peripheral surface 833 includes an end face 833a, and the end point is the outer end line 8331 that connects the end face 833a with the outer wall surface 832. That is, the end point of the inner peripheral surface 833 is the outer end line 8331.

[0055] Among them, end face 833a includes outer end line 8331. The outer end line 8331 is the end line of end face 833a that is furthest from the ink storage space in the ink flow direction.

[0056] The end face 833a is located on the side of the raised part 8321 that is away from the ink storage space.

[0057] In one possible implementation, see Figure 1a and Figure 1bAs shown, the inner peripheral surface 833 also includes an inner wall surface 833b, and the end surface 833a is provided with an inner end line 8332 connected to the inner wall surface 833b. The inner end line 8332 includes at least two lines that are not on the same plane. With this configuration, by providing at least two lines that are not on the same plane for both the inner end line 8332 and the outer end line 8331, the end surface 833a of the ink supply needle 83 can be made to be not in the same plane.

[0058] In the extension direction of the ink supply needle 83, the outer end line 8331 is located on the side of the inner end line 8332 away from the ink storage space, that is, the outer end line 8331 is located on the side of the inner end line 8332 in the -X direction.

[0059] When the ink in the ink canister is used up, you need to use an ink container 111 (such as an ink bottle) to refill the ink canister.

[0060] Figure 2 This is a schematic diagram of the structure of an ink container provided in an embodiment of this application. Figure 3 This is an exploded schematic diagram of an ink container provided in an embodiment of this application.

[0061] See Figure 2 and Figure 3 As shown, the ink container 111 has an ink storage chamber and an ink outlet 11. The ink container 111 includes a container body 6 and an ink supply part 100. The container body 6 has an ink storage chamber for holding ink, and the ink supply part 100 has a nozzle 1, a valve abutment part 2, a movable valve core 3, an elastic element 4, and a valve mounting part 5.

[0062] The nozzle 1 is installed on the container body 6. The container body 6 has an outlet 61. The outlet 61 of the container body 6 is provided with an external thread, and the inner diameter of the nozzle 1 is provided with an internal thread. The nozzle 1 is stably installed on the container body 6 through the internal and external threads.

[0063] Figure 4 This is a schematic diagram of an ink container excluding the elastic element and the moving valve, provided for an embodiment of this application. Figure 4 In the diagram, the side of the ink container facing the +X direction is the upper part of the ink container, and the side of the ink container facing the -X direction is the lower part of the ink container.

[0064] See Figure 4 As shown, the valve mounting part 5 is provided with an outer fixing part 51 and a receiving part 52. The receiving part 52 can accommodate the movable valve core 3 and the elastic member 4. The bottom of the receiving part 52 has a protrusion for fixing the elastic member 4 to prevent the elastic member 4 from moving or shaking. The receiving part 52 is provided with spaced openings around its perimeter to connect the ink storage chamber and the interior of the receiving part 52. The inner diameter of the outlet 61 is provided with a rib 62 to abut against the lower part of the outer fixing part 51.

[0065] The valve abutment part 2 is frustum-shaped, and the upper opening of the valve abutment part 2 forms a through hole 21, which constitutes part of the ink outlet 11. The interior of the valve abutment part 2 is frustum-shaped, and the inner diameter of the valve abutment part 2 gradually increases in the direction close to the ink storage chamber.

[0066] The valve abutment 2 can be made of plastic or silicone. When the valve abutment 2 is made of silicone, it has a certain degree of elasticity and deformability. When the valve abutment 2 comes into contact with other structures, it undergoes slight deformation, which can increase the sealing performance of the ink container 111.

[0067] The valve abutment part 2 has a through hole 21 with a rib extending in the direction of the central axis of the ink container 111. When the ink supply needle 83 is engaged with the ink outlet 11, the outer periphery of the ink supply needle 83 contacts the rib to prevent ink from overflowing from the ink outlet 11 after the movable valve core 3 is moved.

[0068] The upper structure of the movable valve core 3 is the same as the inner circumferential surface of the valve abutment part 2, and is also frustum-shaped. This design can increase the abutment surface of the valve structure of the ink container 111 and increase the sealing performance of the ink container 111.

[0069] The upper diameter of the outer fixing part 51 of the valve mounting part 5 is smaller than the lower diameter of the outer fixing part 51, and the upper part of the outer fixing part 51 forms a first space 24 with the inner diameter of the outlet 61 (see...). Figure 5 As shown, a protrusion 22 is provided at the lower end of the valve abutment 2. The size of the protrusion 22 matches the size of the first space 24. The valve abutment 2 can be placed on the valve mounting part 5, and the inner circumferential surface of the valve abutment 2 and the receiving part 52 of the valve mounting part 5 together constitute the movable space of the valve core 3.

[0070] See Figure 5 As shown, the upper part of the valve abutment 2 has a second space 23, and the bottle mouth 1 has a protrusion 12. The protrusion 12 and the second space 23 correspond in shape and position. When the ink container 111 is assembled, the valve mounting part 5 is installed on the outlet 61 of the ink container 111, and the outer fixing part 51 of the valve mounting part 5 abuts against the rib 62 on the outlet 61. Then, the elastic member 4 and the movable valve core 3 are installed in the receiving part 52, and the protrusion 22 at the lower end of the valve abutment 2 extends into the first space 24. The valve abutment 2 covers the valve mounting part 5, and then the bottle mouth 1 is covered onto the opening. The protrusion 12 of the bottle mouth 1 cooperates with the second space 23. Through this structure, the interior of the ink container 111 forms multiple seals to prevent ink leakage.

[0071] In one possible scenario, the valve structure can also be configured as a self-sealing valve.

[0072] like Figure 3 and Figure 6 As shown,Figure 6 This is a schematic diagram of the nozzle of the ink container provided in this application embodiment. The ink outlet 11 of the nozzle 1 is provided with a positioning part 13, which is a recessed portion extending from the outer periphery of the ink outlet 11 towards the central axis of the ink container 111. A positioning protrusion corresponding to the size and position of the positioning part 13 is provided on the inner periphery of the mounting recess 81. In this embodiment, the positioning part 13 consists of two symmetrically arranged recesses. In other possible embodiments, the number and position of the positioning parts 13 may differ depending on the ink color; for example, there may be three positioning parts 13, or the recesses of the positioning parts 13 may be asymmetrically arranged. In other possible embodiments, the positioning part 13 may also cooperate with an engaging recess to distinguish different ink colors.

[0073] A sealing film 7 is also provided on the ink outlet 11 of the ink container 111 to prevent ink leakage from the ink outlet 11. When the ink cartridge is in use, the tip of the raised part 8321 of the ink supply needle 83 can easily pierce the sealing film 7, reducing the step of the user tearing off the sealing film 7. In other possible embodiments, the ink container 111 may also be provided with a cap to seal the ink outlet 11. In other possible embodiments, the ink container 111 may be provided with both a sealing film 7 and a cap.

[0074] Figure 7 This is a cross-sectional schematic diagram showing the fit between the ink container and the ink inlet section in an embodiment of this application.

[0075] The ink outlet 11 is installed in the mounting recess 81 of the ink inlet section 8, moving towards the ink tank. The ink container 111 has an ink flow path that connects the ink storage chamber of the ink container 111 and the ink outlet 11. A valve component is provided in the ink flow path to open or close the ink flow path. The valve component includes a valve abutment 2, a movable valve core 3, and an elastic element 4. In the non-use state, the movable valve core 3 abuts against the valve abutment 2, and the ink flow path is closed. When the ink container 111 is installed on the ink tank, the raised part 8321 of the ink supply needle 83 abuts against the movable valve core 3. The movable valve core 3 moves away from the ink outlet 11, away from the valve abutment 2, and the ink flow path opens. Ink flows from the ink storage chamber through the gap between the ink flow path, the raised part 8321, and the flow channel in the ink supply needle 83 into the ink tank.

[0076] The outer diameter of the ink outlet 11 is slightly smaller than the inner diameter of the mounting recess 81. This facilitates the smooth installation of the ink outlet 11 into the mounting recess 81.

[0077] The ink outlet 11 also has an engaging recess (not shown) that corresponds to the shape and position of the engaging part 82. In this embodiment, the engaging part 82 is triangular in shape, with the ink needle 83 positioned in the middle of the engaging part 82. The engaging recess inside the ink outlet 11 has a structure that corresponds to the shape and position of the engaging part 82. When different colors of ink are stored in the ink can, the structure of the engaging part 82 differs for ink cans of different colors. For example, on ink cans containing other colors, the engaging part 82 can be square, rectangular, or circular. Meanwhile, the engaging recess on the ink container 111 corresponds in position and shape to the engaging part 82 on ink cans of the same ink color.

[0078] Secondly, this utility model provides a printing system including an ink container 111 and an ink tank. The ink tank and the ink container 111 are detachably connected.

[0079] The ink canister in this embodiment has the same structure as the ink canister provided in the first aspect and can bring the same or similar technical effects. It will not be described in detail here, but can be referred to the description of the above embodiments.

[0080] The ink container 111 in this embodiment has the same structure as the ink container 111 provided in the first aspect, and can bring the same or similar technical effects. It will not be described in detail here, but can be referred to the description of the above embodiments.

[0081] Thirdly, this embodiment of the invention provides an ink container 111, which is detachably connected to the ink tank of a printing device. The ink container 111 includes an ink supply section 100 connected to an ink supply needle 83 of the printing device. The two end faces of the ink supply section 100 and the ink supply needle 83 in the ink flow direction have different shapes. That is, in the initial and final stages of connection or separation, the two contact end faces of the ink supply needle 83 and the ink supply section 100 are not completely fitted, but maintain a certain gap to communicate with the external environment. This structural design effectively avoids the problem of liquid film formation at the connection interface due to surface tension.

[0082] The ink canister in this embodiment has the same structure as the ink canister provided in the first aspect and can bring the same or similar technical effects. It will not be described in detail here, but can be referred to the description of the above embodiments.

[0083] The ink container 111 in this embodiment has the same structure as the ink container 111 provided in the first aspect, and can bring the same or similar technical effects. It will not be described in detail here, but can be referred to the description of the above embodiments.

[0084] In other possible cases, ink containers can also take the form of ink cartridges, ink sacs, ink bags, etc., and their specific structures can be adapted to the needs of different printing devices.

[0085] In some examples, the movable valve core 3 of the ink supply unit 100 is opposite to the raised portion 8321 of the ink supply needle 83 in the ink flow direction, the contact surface of the movable valve core 3 and the ink supply needle 83 is flat, and the end face of the ink supply needle 83 and / or the movable valve core 3 is non-planar.

[0086] In other examples, the valve structure of the ink supply unit 100 is a self-sealing valve, in which case the end face of the ink supply needle 83 is a non-planar structure.

[0087] In other examples, the ink supply end face of the ink reservoir, ink sac, ink bag, and / or the ink supply end face of the printer are non-planar structures.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A printing device, characterized in that, include: An ink inlet section is provided for receiving ink and is connected to an ink storage space. An ink supply needle is disposed on the ink inlet section and communicates with the ink storage space. The ink supply needle is provided with an inner circumferential surface forming a flow channel. In the extending direction of the ink supply needle, at least two lines that are not on the same plane are provided at the end of the inner circumferential surface.

2. The printing apparatus according to claim 1, characterized in that, In the extension direction of the ink supply needle, a plurality of raised portions are provided on the side of the ink supply needle away from the ink storage space. The plurality of raised portions are spaced apart along the circumferential direction of the ink supply needle, and a gap is provided between two adjacent raised portions.

3. The printing apparatus according to claim 2, characterized in that, In the direction away from the ink storage space, the cross-sectional area of ​​the raised portion gradually decreases.

4. The printing apparatus according to claim 1, characterized in that, The ink supply needle has an outer wall surface, and the inner peripheral surface includes an end face. The end face is the outer end line connecting the end face and the outer wall surface.

5. The printing apparatus according to claim 4, characterized in that, The inner peripheral surface also includes an inner wall surface, and the end face is provided with an inner end line connected to the inner wall surface. The inner end line includes at least two lines that are not on the same plane.

6. The printing apparatus according to claim 1, characterized in that, The inner circumferential surface comprises at least two intersecting planes; or, the inner circumferential surface comprises at least two intersecting curved surfaces.

7. The printing apparatus according to claim 2 or 3, characterized in that, The ink supply needle is provided with a partition wall inside, which extends along the extension direction of the ink supply needle and is used to divide the flow channel into two parts.

8. The printing apparatus according to claim 7, characterized in that, In the extending direction of the ink supply needle, the raised portion is disposed on the side of the partition wall opposite to the ink storage space.

9. A printing system, characterized in that, include: Ink container; An ink inlet section is provided for receiving ink and is connected to an ink storage space. An ink supply needle is disposed on the ink inlet section and communicates with the ink storage space. The ink supply needle is provided with an inner circumferential surface forming a flow channel. In the extending direction of the ink supply needle, at least two lines that are not on the same plane are provided at the end of the inner circumferential surface.

10. An ink container, detachably connected to the ink inlet section of a printing apparatus as described in any one of claims 1-8, characterized in that, It includes an ink supply section connected to the ink supply needle of the printing device, wherein the two end faces of the ink supply section and the ink supply needle are not identical in shape in the direction of ink flow.

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