Printer

Abstract

The utility model provides a printer, including ink box body, nozzle and cap subassembly, the bottom of ink box body is equipped with ink outlet, in the axial direction of ink outlet, the matching surface of cap subassembly faces the recess that is equipped with to the protruding surface, the opening of recess is to protruding surface, recess extends along the length direction of protruding surface to divide the matching surface into first matching section and second matching section, first matching section is used for with protruding surface cooperation to make first matching section produce the deformation of far away from protruding surface in protruding direction of protruding surface, second matching section is attached with the bottom wall of ink box body, wherein the material of matching surface is soft silica gel. Through the recess that the matching surface of cap subassembly is equipped with, makes first matching section and protruding surface of nozzle cooperate when producing the deformation of far away from protruding surface in protruding direction of protruding surface, while second matching section and ink box body's bottom wall keep attaching, can prevent ink dry and nozzle blockage with nozzle direct exposure in outside air.

Description

Technical Field

[0001] This utility model relates to the field of printing, and in particular to a printer. Background Technology

[0002] In inkjet printing technology, the printer precisely ejects ink from tiny nozzles within the printhead, creating patterns or text on the printing medium. This process relies on a sophisticated pressure control mechanism within the printhead. When a printing task is performed, piezoelectric elements or heaters within the printhead generate instantaneous pressure, forcing the ink to overcome its surface tension and exit from the nozzle as droplets.

[0003] However, when the printer is not in use, if the printhead is directly exposed to the external environment, it can easily cause a number of problems. Dust particles in the environment may adhere to and clog the nozzles, causing broken lines or white streaks during printing. At the same time, the exposed ink surface will be in continuous contact with the air, causing solvent evaporation, increased ink viscosity, and even drying out. This will not only cause nozzle clogging but also affect the jetting performance and print quality when printing is restarted. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a printer.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] This utility model discloses a printer, which includes an ink cartridge body, a printhead, and a cap assembly. The bottom of the ink cartridge body has an ink outlet. The printhead includes an ink jet chip, a connecting part, and a flexible circuit. The ink jet chip is connected to the connecting part. The projection of the ink jet chip on the axial direction of the ink outlet can completely cover the ink outlet. The connecting part is connected to the flexible circuit. The surface of the connecting part facing the cap assembly protrudes towards the cap assembly to form a protruding surface.

[0007] Along the axial direction of the ink outlet, a groove is provided on the mating surface of the cap assembly facing the protruding surface. The opening of the groove faces the protruding surface, and the groove extends along the length direction of the protruding surface to divide the mating surface into a first mating segment and a second mating segment. The first mating segment is used to mate with the protruding surface so that the first mating segment deforms away from the protruding surface in the protruding direction of the protruding surface. The second mating segment fits against the bottom wall of the ink cartridge body.

[0008] The material of the mating surface is soft silicone.

[0009] In this solution, the above-mentioned structural form is adopted. By opening a groove on the mating surface of the cap assembly, when the first mating section mates with the protruding surface of the printhead, a deformation away from the protruding surface occurs in the protruding direction of the protruding surface. At the same time, the second mating section remains in close contact with the bottom wall of the ink cartridge body. This allows the cap assembly to cover the protruding surface of the printhead and the bottom wall of the ink cartridge body, directly exposing the printhead to the outside air. This can prevent the ink from drying out and the printhead from clogging, ensuring the reliability of the printhead in the non-working state and the printing quality when restarted.

[0010] Preferably, there are multiple connecting parts, and the multiple connecting parts are symmetrically connected to both ends of the ink jet chip along the width direction of the ink outlet;

[0011] Each of the connecting parts corresponds to and mates with the first mating section.

[0012] In this design, the aforementioned structural form is adopted, with multiple connecting parts symmetrically connected to both ends of the ink jet core along the width direction of the ink outlet. Each connecting part corresponds to a protruding surface, ensuring balanced force on the printhead in the width direction of the ink outlet and improving the stability of the printhead installation. The individual engagement of each connecting part with its corresponding protruding surface increases the contact points between the cap assembly and the printhead, enhancing the overall connection and reducing the risk of poor sealing due to failure of a single contact point.

[0013] Preferably, when there are multiple grooves, the multiple grooves are spaced apart on the mating surface, and the distribution direction of the grooves is the same as the width direction of the protruding surface;

[0014] In the width direction of the protruding surface, the surface of the mating surface closest to the nozzle forms the first mating segment, and the surface of the mating surface furthest from the nozzle forms the second mating segment.

[0015] In this design, the aforementioned structural form is adopted, with multiple grooves spaced apart on the mating surface along the width direction of the protruding surface. The surface closest to the printhead forms the first mating segment, and the surface furthest from the printhead forms the second mating segment. This structure positions the first and second mating segments at opposite ends of the mating surface along its width direction. The concentration of multiple grooves in the area between the first and second mating segments enhances the deformation capability of the mating surface in the protruding direction of the printhead, thereby reducing the pressure required for the first mating segment to adhere to the printhead and for the second mating segment to adhere to the bottom wall of the ink cartridge body.

[0016] Preferably, the cap assembly has an air passage hole and an air passage, the air passage hole is through one end of the ink outlet in the axial direction of the ink outlet, the ink outlet is closed at one end in the axial direction of the ink outlet, and at least part of the projection of the air passage hole coincides with the projection of the ink outlet in the axial direction of the ink outlet.

[0017] The end of the air passage near the air passage hole is connected to the air passage hole, the end of the air passage away from the air passage hole extends to one of the outer wall surfaces of the cap assembly, and the end of the air passage away from the air passage hole is connected to the outside.

[0018] In this design, the aforementioned structure, when the cap assembly covers the printhead, creates a confined gas passage connecting the internal space of the ink outlet to the outside environment via air ducts and air channels. This passage prevents the formation of a completely sealed cavity inside the ink outlet, allowing for slow gas exchange and pressure equalization between the internal cavity and the external environment, preventing abnormal pressure inside the cavity due to temperature changes. Simultaneously, as a confined channel, this passage effectively prevents large-scale direct convection between external air and the internal space of the ink outlet, limiting the contact between the printhead and the external environment to a controllable range, thus avoiding both complete printhead exposure and complete sealing.

[0019] Preferably, a portion of one of the outer wall surfaces of the cap assembly is recessed into the interior of the cap assembly to form the air passage, the air passage extending on one of the wall surfaces of the cap assembly.

[0020] In this design, the aforementioned structural form is adopted, with a portion of one outer wall surface of the cap assembly recessed inward to form an air passage. This air passage extends along the wall surface of the cap assembly, integrating the air passage with the cap assembly as a single unit, eliminating the need for additional external pipes or connectors and simplifying the overall structure of the cap assembly. The inwardly recessed air passage design allows the air passage outlet to be directly located on the outer wall surface of the cap assembly, achieving communication with the external environment. The extension of the air passage along the outer wall surface increases the area of ​​communication between the air passage and the outside world.

[0021] Preferably, the cap assembly is recessed into the middle region of the connection surface of the ink outlet facing the printhead in the axial direction to form a cavity, and the air passage is opened at the bottom of the cavity;

[0022] The mating surface is formed on a portion of the connecting surface that is not recessed into the interior of the cap assembly.

[0023] In this design, the aforementioned structure allows the cavity to form a buffer space around the air passage hole when the cap assembly is in contact with the connecting part and the bottom wall of the cartridge body, enabling communication with the air passage through the air passage hole. The mating surface fits tightly against the connecting part and the bottom wall of the cartridge body, isolating the cavity and air passage hole from the external environment. The buffer space increases the internal gas volume, helping to mitigate internal pressure fluctuations caused by temperature changes.

[0024] Preferably, the cap assembly includes a cap body and an abutment portion. The cap body forms the connecting surface on the surface of the ink outlet facing the printhead in the axial direction. The cap body is connected to the abutment portion on the surface of the ink outlet away from the printhead in the axial direction. The air passage hole and the air passage are formed on the cap body and / or the abutment portion.

[0025] The cap body is made of soft silicone.

[0026] In this solution, the above-mentioned structural form allows the cap body and the contact part to be independently selected and manufactured according to their respective functional requirements.

[0027] Preferably, the cap body has a first air passage hole that penetrates the cap body in the axial direction of the ink outlet; the abutment portion has a second air passage hole that passes through one end of the cap body in the axial direction of the ink outlet and faces the cap body, and the end of the second air passage hole away from the cap body in the axial direction of the ink outlet forms the closed end, the axial directions of the first air passage hole and the second air passage hole coincide to form the air passage hole, the air passage is opened on the abutment portion and communicates with the second air passage hole, and the end of the air passage away from the second air passage hole extends on one of the walls of the abutment portion.

[0028] In this design, the aforementioned structural form is adopted, with the air passages segmented and placed on the cap body and the abutment portion, ensuring a continuous gas flow path at the junction of the two. The segmented air passage structure reduces the difficulty of machining deep holes in a single soft material component, improving molding accuracy and yield. The axial alignment of the first and second air passages ensures a smooth gas flow path and reduces flow resistance.

[0029] Preferably, the cap body is recessed inward on the surface of the ink outlet away from the printhead to form a receiving cavity, and the abutting part extends into the receiving cavity at one end of the ink outlet facing the cap body and abuts against the bottom of the cavity. The abutting part at one end of the ink outlet away from the cap body is used to abut against the interior of the printer body.

[0030] In this design, the aforementioned structural form is adopted, and the positioning and engagement of the cap body and the abutment part are achieved through the receiving cavity, ensuring the stability of their connection. The abutment part directly abuts against the bottom of the cavity, providing axial support for the cap body at the ink outlet and enhancing the cap assembly's ability to resist pressure during the sealing process.

[0031] Preferably, the abutting part includes an abutting body and a support rod. A first axial end of the support rod is connected to the abutting body at one end of the ink outlet axially away from the printhead. A second axial end of the support rod extends axially away from the printhead at the ink outlet. The support rod has an abutting seat formed by horizontally extending outward from the second axial end. The abutting seat is used to abut against the interior of the printer body.

[0032] In this solution, the above-mentioned structural form is adopted. The horizontally extended abutment increases the contact area with the inside of the printer body, thereby improving the stability of the support.

[0033] The positive and progressive effects of this utility model are as follows:

[0034] By creating grooves on the mating surfaces of the cap assembly, the first mating section deforms away from the protruding surface of the printhead in the protruding direction when it mates with the protruding surface of the printhead. At the same time, the second mating section remains in contact with the bottom wall of the ink cartridge body, allowing the cap assembly to cover the protruding surface of the printhead and the bottom wall of the ink cartridge body, exposing the printhead directly to the outside air, thereby preventing the ink from drying out and the printhead from clogging. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the printer's cap assembly in an embodiment of the present invention.

[0036] Figure 2 This is a schematic diagram of the ink cartridge structure according to an embodiment of the present utility model.

[0037] Figure 3 This is a schematic diagram of the cap assembly (with two grooves at each end) according to an embodiment of the present invention.

[0038] Figure 4 This is a schematic diagram of the structure of the contact part (shorter air passage) in an embodiment of the present invention.

[0039] Figure 5 This is a cross-sectional view of the cap assembly (with two grooves at each end) according to an embodiment of the present invention.

[0040] Figure 6 This is a cross-sectional schematic diagram of the cap assembly (with two grooves at each end) according to an embodiment of the present utility model.

[0041] Figure 7This is a cross-sectional view of the cap assembly (with a groove at each end) according to an embodiment of the present invention.

[0042] Figure 8 This is a schematic diagram of the structure of the contact part (longer air passage) in an embodiment of the present utility model.

[0043] Figure 9 This is a cross-sectional schematic diagram of the cap assembly (with a groove at each end) according to an embodiment of the present utility model.

[0044] Explanation of reference numerals in the attached figures:

[0045] Ink cartridge body 1

[0046] Ink outlet 11

[0047] Nozzle 2

[0048] Inkjet chip 21

[0049] Connecting part 22

[0050] Protruding surface 221

[0051] Cap component 3

[0052] Mating surface 31

[0053] Groove 311

[0054] First coordination section 312

[0055] Second coordination section 313

[0056] Airway opening 314

[0057] Airway 315

[0058] Closed end 316

[0059] Cavity 317

[0060] Cap body 318

[0061] First airway opening 3181

[0062] Second airway 3182

[0063] Reception cavity 3183

[0064] Contact part 319

[0065] Contact body 3191

[0066] Support rod 3192 Detailed Implementation

[0067] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0068] like Figures 1 to 9 As shown, this embodiment provides a printer, which includes an ink cartridge body 1, a printhead 2, and a cap assembly 3. The ink cartridge body 1 has an ink outlet 11 at its bottom. The printhead 2 includes an ink jet chip 21, a connector 22, and a flexible circuit. The ink jet chip 21 is connected to the connector 22, and the projection of the ink jet chip 21 along the axial direction of the ink outlet 11 completely covers the ink outlet 11. The connector 22 is connected to the flexible circuit, and the surface of the connector 22 facing the cap assembly 3 protrudes towards the cap assembly 3 to form a protruding surface 221. Along the axial direction of the ink outlet 11 (in the printhead 21...), the printhead 21... (Axially upward of head 2), a groove 311 is provided on the mating surface 31 facing the protruding surface 221 in the cap assembly 3. The opening of the groove 311 faces the protruding surface 221 and the groove 311 extends along the length direction of the protruding surface 221 to divide the mating surface 31 into a first mating segment 312 and a second mating segment 313. The first mating segment 312 is used to mate with the protruding surface 221 so that the first mating segment 312 deforms away from the protruding surface 221 in the protruding direction of the protruding surface 221. The second mating segment 313 fits against the bottom wall of the ink cartridge 1. The material of the mating surface 31 is soft silicone. By adopting the above-described structure, a groove 311 is formed on the mating surface 31 of the cap assembly 3, so that when the first mating section 312 mates with the protruding surface 221 of the printhead 2, a deformation away from the protruding surface 221 is generated in the protruding direction of the protruding surface 221. At the same time, the second mating section 313 remains in contact with the bottom wall of the ink cartridge 1, so that the cap assembly 3 can cover the protruding surface 221 of the printhead 2 and the bottom wall of the ink cartridge 1, exposing the printhead 2 directly to the outside air, thereby preventing the ink from drying out and the printhead 2 from clogging.

[0069] In practical use, the axial direction of nozzle 2 is... Figure 5 , Figure 6 and Figure 9 In the middle Z; the length direction of the protruding surface 221 is Figure 2 H in the text.

[0070] It should be specifically noted that in this embodiment, the printhead 2 is fixedly connected to the connecting part 22, and adhesive is applied to the bottom wall of the ink cartridge body 1 to connect the connecting part 22 to the bottom of the ink cartridge body 1, thereby achieving the connection between the printhead 2 and the bottom wall of the ink cartridge body 1. In other embodiments, the connection method between the printhead 2 and the bottom wall of the ink cartridge body 1 can be adjusted according to actual needs, and is not limited here.

[0071] In practical use, the connection and positional relationships between the connecting part 22, the ink jet chip 21, and the flexible circuit are all existing technologies and are not specifically limited here.

[0072] Multiple connecting parts 22 are symmetrically connected to both ends of the ink jet chip 21 along the width direction of the ink outlet 11; each connecting part 22 corresponds to and engages with a protruding surface 221. With this structure, multiple connecting parts 22 are symmetrically connected to both ends of the ink jet chip 21 along the width direction of the ink outlet 11, and each connecting part 22 corresponds to and engages with a protruding surface 221. This ensures that the force on the printhead 2 remains balanced in the width direction of the ink outlet 11, improving the stability of the printhead 2 installation. The engagement of each connecting part 22 with its corresponding protruding surface 221 increases the contact points between the cap assembly 3 and the printhead 2, enhancing the overall connection effect and reducing the risk of poor sealing due to failure of a single contact point.

[0073] In practical use, the width direction of the ink outlet 11 is as follows: Figure 2 W.

[0074] In addition, such as Figure 2 As shown, in this embodiment, there are two connecting parts 22. In other embodiments, the number of connecting parts 22 can be adjusted according to actual needs, and the number of connecting parts 22 can be an even number.

[0075] When there are multiple grooves 311, the grooves 311 are spaced apart on the mating surface 31, and the distribution direction of the grooves 311 is the same as the width direction of the protruding surface 221. In the width direction of the protruding surface 221, the surface of the mating surface 31 closest to the nozzle 2 forms a first mating section 312, and the surface of the mating surface 31 furthest from the nozzle 2 forms a second mating section 313. With this structure, multiple grooves 311 are spaced apart on the mating surface 31 along the width direction of the protruding surface 221. The surface of the mating surface 31 closest to the nozzle 2 forms the first mating section 312, and the surface furthest from the nozzle 2 forms the second mating section 313. This structure positions the first mating section 312 and the second mating section 313 at opposite ends of the mating surface 31 in the width direction of the protruding surface 221. Multiple grooves 311 are concentrated in the area between the first mating section 312 and the second mating section 313, which enhances the deformation capability of the mating surface 31 in the protruding direction of the protruding surface 221, thereby reducing the pressure required when the first mating section 312 and the protruding surface 221, and the second mating section 313 and the bottom wall of the ink cartridge body 1 are in contact.

[0076] In practical use, the width direction of the protruding surface 221 is... Figure 2 H in the middle.

[0077] It should be specifically noted that, in this embodiment, the number of grooves 311 can be selected based on the width of the protruding surface 221. Furthermore, when the width of the protruding surface 221 is small, the number of grooves 311 can be less, such as... Figure 7 and Figure 9As shown, there is one groove 311. When the width of the protruding surface 221 is wider, it can be as follows: Figure 3 and Figure 6 As shown, two grooves 311 are provided. Of course, for other embodiments, the number of grooves 311 can be adjusted according to actual needs, and is not limited here.

[0078] like Figures 3 to 9 As shown, the cap assembly 3 has an air passage hole 314 and an air passage 315. The air passage hole 314 extends through one end of the ink outlet 11 in the axial direction. The end of the ink outlet 11 away from the ink outlet 11 in the axial direction is a closed end 316. In the axial direction of the ink outlet 11, at least part of the projection of the air passage hole 314 coincides with the projection of the ink outlet 11. The end of the air passage 315 near the air passage hole 314 is connected to the air passage hole 314, and the end of the air passage 315 away from the air passage hole 314 extends to one of the outer walls of the cap assembly 3. The end of the air passage 315 away from the air passage hole 314 is connected to the outside. With the above structure, when the cap assembly 3 covers the printhead 2, a confined gas passage is formed that connects the internal space of the ink outlet 11 to the outside through the air passage hole 314 and the air passage 315. This passageway prevents the formation of a completely sealed cavity inside the ink outlet 11, allowing for slow gas exchange and pressure balance between the internal cavity and the external environment, thus preventing abnormal pressure inside the cavity due to temperature changes. Simultaneously, as a confined channel, this passageway effectively prevents large-scale direct convection between external air and the internal space of the ink outlet 11, limiting the contact between the printhead 2 and the external environment to a controllable range. This avoids both complete exposure of the printhead 2 and complete sealing.

[0079] In this embodiment, the projection of the air passage hole 314 completely coincides with the projection of the ink outlet 11 along its axial direction. In other embodiments, the overlapping area of ​​the two projections can be adjusted according to actual needs, and is not limited here.

[0080] like Figure 4 and Figure 8 As shown, a portion of one outer wall surface of the cap assembly 3 is recessed inward to form an air passage 315, which extends along one wall surface of the cap assembly 3. This structural design, with the air passage 315 extending along the wall surface of the cap assembly 3, integrates the air passage 315 with the cap assembly 3, eliminating the need for external pipes or connectors and simplifying the overall structure of the cap assembly 3. The inwardly recessed air passage 315 design allows the outlet of the air passage 315 to be directly located on the outer wall surface of the cap assembly 3, achieving communication with the external environment. The extension of the air passage 315 along the outer wall surface increases the area of ​​communication between the air passage 315 and the outside world.

[0081] like Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 9 As shown, the cap assembly 3 is recessed into the middle region of the connecting surface of the ink outlet 11 facing the printhead 2, forming a cavity 317. An air passage 314 is formed at the bottom of the cavity 317. A mating surface 31 is formed on a portion of the connecting surface that is not recessed into the cap assembly 3. With this structure, when the cap assembly 3 is in contact with the connecting part 22 and the bottom wall of the ink cartridge body 1, the cavity 317 forms a buffer space around the air passage 314, allowing communication with the air passage 315 through the air passage 314. The mating surface 31 fits tightly against the connecting part 22 and the bottom wall of the ink cartridge body 1, isolating the cavity 317 and the air passage 314 from the external environment. The presence of the buffer space increases the internal gas volume, helping to mitigate internal pressure fluctuations caused by temperature changes.

[0082] like Figures 3 to 9 As shown, the cap assembly 3 includes a cap body 318 and an abutment portion 319. The cap body 318 forms a connecting surface on the surface of the ink outlet 11 facing the printhead 2 in the axial direction. The surface of the cap body 318 away from the printhead 2 in the axial direction of the ink outlet 11 is connected to the abutment portion 319. This structural form allows the cap body 318 and the abutment portion 319 to be independently selected and manufactured according to their respective functional requirements.

[0083] In practical use, the cap body 318 is made of soft silicone; the abutment part 319 is an injection molded part. In other embodiments, the materials of the cap body 318 and the abutment part 319 can be adjusted according to actual needs, and are not limited here.

[0084] like Figures 3 to 9As shown, in this embodiment, a first air passage hole 3181 is provided on the cap body 318, and the first air passage hole 3181 penetrates the cap body 318 in the axial direction of the ink outlet 11; a second air passage hole 3182 is provided on the abutment portion 319, and the second air passage hole 3182 is provided through one end of the cap body 318 in the axial direction of the ink outlet 11. The end of the second air passage hole 3182 away from the cap body 318 in the axial direction of the ink outlet 11 forms a closed end 316. The axial direction of the first air passage hole 3181 and the axial direction of the second air passage hole 3182 coincide to form an air passage hole 314. An air passage 315 is provided on the abutment portion 319 and is connected to the second air passage hole 3182. The end of the air passage 315 away from the second air passage hole 3182 extends on one of the walls of the abutment portion 319. With the above-described structure, the air passage 314 is segmented and positioned between the cap body 318 and the abutment portion 319, ensuring a continuous gas passage at the junction of the two. The segmented air passage 314 structure reduces the difficulty of machining deep holes in a single soft material component, improving molding accuracy and yield. The axial overlap of the first air passage 3181 and the second air passage 3182 ensures a smooth gas flow path and reduces flow resistance. In other embodiments, the positions of the air passage 314 and the air passage 315 can be adjusted according to actual needs and are not limited here.

[0085] It should be noted that when the ink dries easily, the overall length of the air passage 315 can be designed to be longer. Specifically, this can be achieved by increasing the number of bends in the air passage 315, thereby increasing its overall length. When the ink does not dry easily, the overall length of the air passage 315 can be designed to be shorter. Furthermore, the length of the air passage 315 for colored pens ranges from 45-65mm, preferably 55mm. The length of the air passage 315 for black pens ranges from 20-40mm, preferably 30mm. The length of the air passage 315 is related to the ink properties and the size of the cavity 317, and the appropriate length is ultimately determined based on test results.

[0086] like Figure 5 As shown, the cap body 318 is recessed inward on the surface of the ink outlet 11 away from the printhead 2 to form a receiving cavity 3183. The abutment portion 319 extends into the receiving cavity 3183 at one end facing the cap body 318 on the axial direction of the ink outlet 11, abutting against the bottom of the recessed cavity 317. The end of the abutment portion 319 away from the cap body 318 on the axial direction of the ink outlet 11 is used to abut against the interior of the printer body. Using this structure, the receiving cavity 3183 achieves positioning and engagement between the cap body 318 and the abutment portion 319, ensuring the stability of their connection. The abutment portion 319 directly abuts against the bottom of the recessed cavity 317, providing support for the cap body 318 on the axial direction of the ink outlet 11, enhancing the cap assembly 3's ability to resist pressure during the sealing process.

[0087] It should be specifically noted that, in this embodiment, the lower wall of the cap body 318 that forms the receiving cavity 3183 is bent towards the middle area near the cap body 318, so that the upper surface of the cap body 318 can abut against the lower surface of the abutment portion 319, thereby increasing the connection area between the cap body 318 and the abutment portion 319, and thus improving the stability of the connection between the cap body 318 and the abutment portion 319.

[0088] In practical use, gas can also circulate in the receiving cavity 3183. In other words, the receiving cavity 3183 can also be understood as part of the air passage 315.

[0089] like Figures 3 to 9 As shown, the abutment portion 319 includes an abutment body 3191 and a support rod 3192. The first axial end of the support rod 3192 is connected to the end of the abutment body 3191 axially away from the printhead 2 at the ink outlet 11. The second axial end of the support rod 3192 extends axially away from the printhead 2 at the ink outlet 11. The support rod 3192 has an abutment seat extending horizontally outward from its second axial end, which abuts against the interior of the printer body. With this structure, the horizontally extending abutment seat increases the contact area with the printer body interior, improving the stability of the support.

[0090] In this embodiment, the printer also includes a spring, with its two ends connected to the abutment body 3191 and the inside of the printer body, respectively, along the axial direction of the ink outlet 11. The spring provides cushioning when the cap body 318 engages with the printhead 2.

[0091] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model 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 this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A printer, characterized in that, The printer includes an ink cartridge body, a printhead, and a cap assembly. The bottom of the ink cartridge body has an ink outlet. The printhead includes an ink jet chip, a connector, and a flexible circuit. The ink jet chip is connected to the connector. The projection of the ink jet chip on the axial direction of the ink outlet can completely cover the ink outlet. The connector is connected to the flexible circuit. The surface of the connector facing the cap assembly protrudes towards the cap assembly to form a protruding surface. Along the axial direction of the ink outlet, a groove is provided on the mating surface of the cap assembly facing the protruding surface. The opening of the groove faces the protruding surface, and the groove extends along the length direction of the protruding surface to divide the mating surface into a first mating segment and a second mating segment. The first mating segment is used to mate with the protruding surface so that the first mating segment deforms away from the protruding surface in the protruding direction of the protruding surface. The second mating segment fits against the bottom wall of the ink cartridge body. The material of the mating surface is soft silicone.

2. The printer as described in claim 1, characterized in that, The number of the connecting parts is multiple, and the multiple connecting parts are symmetrically connected to both ends of the ink jet chip along the width direction of the ink outlet; Each of the connecting parts corresponds to and mates with the first mating section.

3. The printer as described in claim 1, characterized in that, When there are multiple grooves, the multiple grooves are spaced apart on the mating surface, and the distribution direction of the grooves is the same as the width direction of the protruding surface; In the width direction of the protruding surface, the surface of the mating surface closest to the nozzle forms the first mating segment, and the surface of the mating surface furthest from the nozzle forms the second mating segment.

4. The printer as described in claim 1, characterized in that, The cap assembly has an air passage hole and an air passage. The air passage hole is through one end of the ink outlet in the axial direction of the ink outlet. The end of the ink outlet in the axial direction of the ink outlet is closed. In the axial direction of the ink outlet, at least part of the projection of the air passage hole coincides with the projection of the ink outlet. The end of the air passage near the air passage hole is connected to the air passage hole, the end of the air passage away from the air passage hole extends to one of the outer wall surfaces of the cap assembly, and the end of the air passage away from the air passage hole is connected to the outside.

5. The printer as described in claim 4, characterized in that, A portion of one of the outer wall surfaces of the cap assembly is recessed into the interior of the cap assembly to form the air passage, which extends on one of the wall surfaces of the cap assembly.

6. The printer as described in claim 4, characterized in that, The cap assembly is recessed into the middle area of ​​the connection surface of the ink outlet facing the printhead in the axial direction to form a cavity, and the air passage is opened at the bottom of the cavity. The mating surface is formed on a portion of the connecting surface that is not recessed into the interior of the cap assembly.

7. The printer as described in claim 6, characterized in that, The cap assembly includes a cap body and an abutment portion. The cap body forms the connecting surface on the surface of the ink outlet facing the printhead in the axial direction. The cap body is connected to the abutment portion on the surface of the ink outlet away from the printhead in the axial direction. The air passage hole and the air passage are formed on the cap body and / or the abutment portion. The cap body is made of soft silicone.

8. The printer as described in claim 7, characterized in that, The cap body has a first air passage hole that penetrates the cap body in the axial direction of the ink outlet. The abutment portion has a second air passage hole that passes through one end of the cap body in the axial direction of the ink outlet and faces the cap body. The end of the second air passage hole away from the cap body in the axial direction of the ink outlet forms the closed end. The axial directions of the first air passage hole and the second air passage hole coincide to form the air passage hole. The air passage is opened on the abutment portion and communicates with the second air passage hole. The end of the air passage away from the second air passage hole extends on one of the walls of the abutment portion.

9. The printer as described in claim 7, characterized in that, The cap body is recessed inward on the surface of the ink outlet away from the printhead to form a receiving cavity. The end of the abutting part facing the cap body on the axial direction of the ink outlet extends into the receiving cavity and abuts against the bottom of the cavity. The end of the abutting part away from the cap body on the axial direction of the ink outlet is used to abut against the interior of the printer body.

10. The printer as claimed in claim 9, characterized in that, The abutting part includes an abutting body and a support rod. The first axial end of the support rod is connected to the end of the abutting body in the ink outlet axially away from the printhead. The second axial end of the support rod extends in the axial direction of the ink outlet away from the printhead. The support rod has an abutting seat formed by horizontally extending outward from the second axial end. The abutting seat is used to abut against the interior of the printer body.

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