ink cartridge

Abstract

The application relates to a printing technology field, and relates to an ink cartridge. The ink cartridge comprises a cartridge body, an electric wiring substrate and a printing element substrate. The electric wiring substrate is provided with an electric contact part structure arranged on a main side wall of the cartridge body. The printing element substrate is arranged on a bottom wall of the cartridge body. The cartridge body is provided with a cavity. The cavity is recessed on a part of the main side wall close to the bottom wall. The cavity comprises an inclined surface. The inclined surface and the bottom wall are arranged to face away from each other. A projection of the inclined surface on a plane where the main side wall is located is a first projection. A projection of the printing element substrate on the plane where the main side wall is located is a second projection. An acute angle is formed between the first projection and the second projection. The first projection is located on at least one outer side of the second projection along a left-right direction of the ink cartridge. After falling, the printing element substrate is not easily damaged.

Description

Technical Field

[0001] This application relates to the field of printing technology, and more particularly to an ink cartridge. Background Technology

[0002] In related technologies, ink cartridges are consumables that can be detachably installed in image forming apparatuses, and can store ink or printing ink. The ink cartridge includes a printing element substrate, which controls the ejection of ink onto the printing medium to form text or images. In related technologies, the printing element substrate is easily damaged when the ink cartridge is dropped and subjected to impact. Utility Model Content

[0003] In view of this, this application provides an ink cartridge that has the advantage of not being easily damaged by the printing element substrate after a drop.

[0004] The ink cartridge of this application includes a cartridge body, an electrical wiring board, and a printing element board. The electrical wiring board has a structure with electrical contacts disposed on the main side wall of the cartridge body. The printing element board is disposed on the bottom wall of the cartridge body. The cartridge body has a cavity, which is recessed in the portion of the main side wall near the bottom wall. The cavity includes an inclined surface, which is disposed opposite to the bottom wall. The projection of the inclined surface on the plane of the main side wall is a first projection, and the projection of the printing element board on the plane of the main side wall is a second projection. There is an acute angle between the first projection and the second projection, and the first projection is located at least one outside the second projection along the left-right direction of the ink cartridge.

[0005] When the ink cartridge of this application falls downwards under the influence of gravity and hits an object (such as a desktop, ground, or image forming apparatus), the left or right structure of the bottom wall of the cartridge may bear the impact force. After the ink cartridge bears the impact force, the resulting impact energy is conducted to the printing element substrate. The structure of the cartridge located between the inclined surface and the bottom wall bears the impact energy earlier than the printing element substrate. Due to the inclined surface, the structure of the cartridge located between the inclined surface and the bottom wall can act as a buffer. In other words, the structure of the cartridge located between the inclined surface and the bottom wall acts as a buffer structure. This buffer structure is more likely to deform under the influence of impact energy. The deformation of the buffer structure can consume a relatively large amount of impact energy, so that the impact energy conducted to the printing element substrate is relatively small. Therefore, the possibility of the printing element substrate deforming, cracking, or breaking due to impact energy is relatively small, and the print quality of the ink cartridge after the fall is still relatively good.

[0006] Optionally, the inclined surface includes a planar portion, and / or the inclined surface includes a curved portion.

[0007] Optionally, if the inclined surface includes an arcuate portion, the arcuate portion protrudes in a direction away from the bottom wall, or the arcuate portion is recessed in a direction close to the bottom wall.

[0008] Optionally, at least one outer side of the printed element substrate in the left-right direction is provided with two connected inclined surfaces, wherein the extending direction of one inclined surface intersects the extending direction of the other inclined surface.

[0009] Optionally, in two connected inclined surfaces, the connecting portion between the two connected inclined surfaces is higher than other parts of either inclined surface, or the connecting portion between the two connected inclined surfaces is lower than other parts of either inclined surface.

[0010] Optionally, the inclined surface is provided with a recess.

[0011] Optionally, the projection of the portion of the bottom wall located below the inclined surface onto the plane of the main side wall is the third projection. At least part of the third projection is parallel to the left and right directions, and there is an angle α between the first projection and the third projection, satisfying 5°≤α≤30°.

[0012] Optionally, the housing has a buffer structure located between the inclined surface and the bottom wall. The shape of the buffer structure includes a wedge-shaped portion. The buffer structure includes a wedge tip and a wedge tail distributed in the left-right direction. The wedge tip faces the printing element substrate and is located between the wedge tail and the printing element substrate. Alternatively, the wedge tip faces away from the printing element substrate and the wedge tail is located between the wedge tip and the printing element substrate.

[0013] Optionally, the box body has a buffer structure located between the inclined surface and the bottom wall. The buffer structure includes a first part, a second part and a third part distributed in the left-right direction. The second part is located between the first part and the third part. The thickness dimension h1 of the first part and the thickness dimension h3 of the third part are both greater than or less than the thickness dimension h2 of the second part.

[0014] Optionally, the housing includes an ink supply component and a support component connected to each other. The support component is located below the ink supply component. The electrical wiring board has a structure with electrical contacts disposed on the ink supply component. The printing element board is disposed on the bottom wall of the support component. The receiving cavity of the ink supply component is connected to the ink jet nozzle of the printing element board through the ink supply channel of the support component. The ink supply component and the support component enclose the cavity.

[0015] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A three-dimensional structural diagram of the ink cartridge provided in this application in one embodiment;

[0018] Figure 2 for Figure 1 A three-dimensional structural diagram of the ink cartridge from another perspective;

[0019] Figure 3 This is a front view of the ink cartridge, in which the electrical wiring board is not shown;

[0020] Figure 4 This is a schematic diagram showing the distribution of the first projection and the second projection on the projected surface;

[0021] Figure 5 This is a schematic diagram showing the distribution of the first projection, the second projection, and the third projection on the projected surface.

[0022] Figure 6 This is a schematic diagram of the buffer structure and the substrate for printing components;

[0023] Figure 7 This is a schematic diagram showing the distribution of the first projection, the second projection, and the third projection on the projected surface.

[0024] Figure 8 This is a partial structural diagram of the cavity, inclined surface, buffer structure, and printed element substrate;

[0025] Figure 9 This is a schematic diagram showing the distribution of the first projection, the second projection, and the third projection on the projected surface.

[0026] Figure 10 This is a partial structural diagram of the cavity, inclined surface, buffer structure, and printed element substrate;

[0027] Figure 11 This is a structural diagram of the inclined surface, the printed element substrate, and the bottom wall.

[0028] Figure 12 This is a structural diagram of the inclined surface, the printed element substrate, and the bottom wall.

[0029] Figure 13 This is a schematic diagram of the inclined surface and the bottom wall.

[0030] Figure 14 This is a schematic diagram of the inclined surface and the bottom wall.

[0031] Figure 15 This is a structural diagram of the inclined surface, the printed element substrate, and the bottom wall.

[0032] Figure 16 This is a structural diagram of the inclined surface, the printed element substrate, and the bottom wall.

[0033] Figure 17 This is a schematic diagram of the inclined surface and the bottom wall.

[0034] Figure 18 This is a schematic diagram of the inclined surface and the bottom wall.

[0035] Figure 19 This is a schematic diagram of the buffer structure;

[0036] Figure 20 A schematic diagram of an inclined surface including a planar portion and a curved portion;

[0037] Figure 21 This is a cross-sectional view of the ink cartridge.

[0038] Figure 22 for Figure 21 A magnified schematic diagram of part A in the middle.

[0039] Figure label:

[0040] 1-Box body;

[0041] 11-Main sidewall;

[0042] 111 - Projected surface;

[0043] 12-Bottom wall;

[0044] 12a - Third projection;

[0045] 13-Cavity;

[0046] 131 - Inclined surface;

[0047] 131a - First projection;

[0048] 1311 - Planar part;

[0049] 1312-Curved face;

[0050] 1313 - Connecting part;

[0051] 1314 - Depression;

[0052] 14-Guided section;

[0053] 15-Buffer structure;

[0054] 15a - Reference plane;

[0055] 151-Wedge tip;

[0056] 152-Wedge tail;

[0057] 153 - First Part;

[0058] 154 - Second part;

[0059] 155 - Third part;

[0060] 16-Reinforcing ribs;

[0061] 17-Ink supply components;

[0062] 171 - Receiving cavity;

[0063] 171a - Ink storage chamber;

[0064] 171b - Filter chamber;

[0065] 18-Bearing components;

[0066] 181 - Ink supply channel;

[0067] 2-Electrical wiring board;

[0068] 21-Part One;

[0069] 22 - Part Two;

[0070] 3-Printed component substrate;

[0071] 3a - Second projection;

[0072] 31-Inkjet nozzle;

[0073] 4-Lid body. Detailed Implementation

[0074] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0075] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0076] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0077] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0078] This application provides some embodiments of ink cartridges, relating to the field of printing technology.

[0079] In the accompanying drawings, the ink cartridge may have front-back, left-right, and up-down directions, with each pair of these directions being perpendicular to each other.

[0080] In some embodiments, please refer to Figure 1 As shown, the ink cartridge includes a cartridge body 1, an electrical wiring board 2, and a cover 4. The cartridge body 1 may have a receiving cavity (not shown) for holding ink. The top of the cartridge body 1 is detachably connected to the cover 4, and the cover 4 may have a connecting port (not shown), through which the receiving cavity communicates with the outside of the ink cartridge. When the ink cartridge transfers ink to a printing medium (such as paper, labels, or envelopes), air from outside the cartridge can enter the receiving cavity through the connecting port, thereby balancing the air pressure outside the cartridge with the air pressure inside the receiving cavity.

[0081] In some embodiments, please refer to Figure 1 As shown, the electrical wiring board 2 is provided with multiple electrical contact portions. When the ink cartridge is installed in the image forming apparatus (not shown in the figure), the pins of the power supply component of the image forming apparatus can be electrically connected to the electrical contact portions of the electrical wiring board 2, so that the image forming apparatus can supply power to the electrical wiring board 2.

[0082] In some embodiments, please refer to Figure 2 As shown, the electrical wiring board 2 may include a first portion 21 and a second portion 22 connected to each other. The first portion 21 is provided with a plurality of electrical contact portions, and the first portion 21 may be disposed on the main side wall 11 of the cartridge body 1. It is understood that when the ink cartridge is installed in the image forming apparatus, the main side wall 11 may face the contact pins of the power supply component of the image forming apparatus, so that the electrical contact portions disposed in the first portion 21 are electrically connected to the contact pins of the power supply component. The second portion 22 may be disposed on the bottom wall 12 of the cartridge body 1, and the second portion 22 is electrically connected to the first portion 21, so that the power conducted by the contact pins of the power supply component can be conducted to the second portion 22 via the first portion 21.

[0083] The electrical wiring substrate 2 can be a flexible circuit board or a non-flexible circuit board.

[0084] In some embodiments, please refer to Figure 2As shown, the ink cartridge also includes a printing element substrate 3, which is disposed on the bottom wall 12 of the cartridge body 1. The printing element substrate 3 is electrically connected to the second part 22 and can receive power conducted from the second part 22. The energized printing element substrate 3 can use its own driving element (not shown in the figure, such as a heating element or a piezoelectric element) to control the ink jetting onto the printing medium to form text or images on the printing medium.

[0085] In this design, when the driving element of the printing element substrate 3 is a heating element, the heating element generates heat after being energized. The ink is heated and expands into bubbles, which propel the ink towards the printing medium. This utilizes the principle of thermal foaming to control the ink spraying towards the printing medium. When the driving element of the printing element substrate 3 is a piezoelectric element, the piezoelectric element deforms after being energized to compress the ink, thereby controlling the ink spraying towards the printing medium. This also utilizes the piezoelectric principle to control the ink spraying towards the printing medium.

[0086] In addition, the thickness of the printing element substrate 3 along the vertical direction is relatively small, and relative to the overall structure of the ink cartridge, the printing element substrate 3 can be regarded as a sheet structure.

[0087] In some embodiments, the main sidewall 11 intersects with and is connected to the bottom wall 12.

[0088] In some embodiments, please refer to Figure 3 As shown, the box body 1 is provided with a cavity 13, which is recessed in the main side wall 11 and located in the part of the main side wall 11 near the bottom wall 12. In other words, the cavity 13 is recessed in the lower half of the main side wall 11.

[0089] In some embodiments, please refer to Figure 3 As shown, the cavity 13 includes an inclined surface 131, which is disposed opposite to the bottom wall 12. In some embodiments, please refer to Figure 4 As shown, the projection of the inclined surface 131 onto the plane of the main sidewall 11 (e.g., the projected surface 111) along the front-back direction can be set as the first projection 131a, and the projection of the printed element substrate 3 onto the plane of the main sidewall 11 (e.g., the projected surface 111) along the front-back direction can be set as the second projection 3a. The first projection 131a and the second projection 3a can have an acute angle Δ. In other words, the extension direction of the first projection 131a intersects the extension direction of the second projection 3a but is not perpendicular to it.

[0090] The first projection 131a and the second projection 3a may also have a set obtuse angle, which is complementary to the acute angle Δ.

[0091] In some embodiments, please refer to Figure 4As shown, the first projection 131a is located at least one outer side of the second projection 3a in the left-right direction. For example, the cavity 13 may include an inclined surface 131 located on the left side of the printing element substrate 3, and correspondingly, the first projection 131a is located on the left side of the second projection 3a; or, the cavity 13 may include an inclined surface 131 located on the right side of the printing element substrate 3, and correspondingly, the first projection 131a is located on the right side of the second projection 3a; or, the cavity 13 may include an inclined surface 131 located on the left side of the printing element substrate 3 and an inclined surface 131 located on the right side of the printing element substrate 3, and correspondingly, the first projection 131a is provided on both the left and right sides of the second projection 3a.

[0092] As described above, when the ink cartridge falls downwards under gravity and touches an object (such as a desktop, ground, or image forming device), the left or right side structure of the bottom wall 12 of the cartridge body 1 may be subjected to the following conditions: Figure 3 The impact force F shown, after the ink cartridge withstands the impact force F, will generate impact energy that will be conducted to the printing element substrate 3. The structure of the cartridge 1 located between the inclined surface 131 and the bottom wall 12 will withstand the impact energy earlier than the printing element substrate 3. Due to the arrangement of the inclined surface 131, the structure of the cartridge 1 located between the inclined surface 131 and the bottom wall 12 can play a buffering role. In other words, the structure of the cartridge 1 located between the inclined surface 131 and the bottom wall 12 acts as a buffer. Figure 3 The buffer structure 15 shown is relatively easy to deform under the influence of impact energy. The deformation of the buffer structure 15 can consume a relatively large amount of impact energy, so that the impact energy transmitted to the printing element substrate 3 is relatively small. Therefore, the possibility of structural problems such as deformation, cracking or breakage of the printing element substrate 3 due to impact energy is relatively small, and the printing quality of the ink cartridge after falling is still relatively good.

[0093] In some embodiments, please refer to Figure 5 As shown, the portion of the bottom wall 12 located below the inclined surface 131 is projected onto the plane of the main side wall 11 (e.g., the projected surface 111) as a third projection 12a. At least a portion of the third projection 12a is parallel to the left-right direction, and there is an angle α between the first projection 131a and the third projection 12a, satisfying 5°≤α≤30°. Therefore, the buffer structure 15 of the box body 1 located between the inclined surface 131 and the bottom wall 12 may include, for example, Figure 6The wedge-shaped portion is shown. The wedge-shaped portion includes a wedge tip 151 and a wedge tail 152 distributed along the left-right direction. The wedge tip 151 has a thickness dimension H1, and the wedge tail 152 has a thickness dimension H2. The thickness dimension H2 is greater than the thickness dimension H1. Therefore, the load-bearing deformation resistance of the wedge tip 151 is weaker than that of the wedge tail 152. When impact energy is transferred from the buffer structure 15 to the printed element substrate 3, the wedge tip 151 is more prone to deformation than the wedge tail 152. The deformation of the wedge tip 151 easily dissipates more impact energy, resulting in a relatively smaller impact energy transmitted to the printed element substrate 3. Therefore, the possibility of the printed element substrate 3 deforming, cracking, or breaking due to impact energy is relatively small.

[0094] At least a portion of the aforementioned third projection 12a is also parallel to the second projection 3a, and the aforementioned included angle α and acute angle Δ can be the same.

[0095] Additionally, please refer to Figure 5 As shown, the included angle α can be 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14°, 15°, 16°, 17°, 18°, 19°, 20°, 21°, 22°, 23°, 24°, 25°, 26°, 27°, 28°, 29°, or 30°.

[0096] Furthermore, please refer to Figure 6 As shown, the wedge tip 151 may face the printing element substrate 3, and the wedge tip 151 may be located between the wedge tail 152 and the printing element substrate 3. In some other embodiments (not shown in the figure), the wedge tip may face away from the printing element substrate, and the wedge tail may be located between the wedge tip and the printing element substrate.

[0097] In addition, please refer to Figure 6 As shown, the wedge-shaped portion also includes a reference surface 15a, which can serve as a dimensional reference surface for thickness dimensions H1 and H2. The reference surface 15a can be located between the inclined surface 131 and the bottom wall 12, or the portion of the bottom wall 12 located below the inclined surface 131 can be coplanar with the reference surface 15a.

[0098] In some other embodiments, please refer to Figure 7 As shown, at least a portion of the third projection 12a may be parallel or not parallel to the first projection 131a. At least a portion of the third projection 12a is neither parallel nor perpendicular to the left-right direction; similarly, at least a portion of the third projection 12a is neither parallel nor perpendicular to the second projection 3a. Correspondingly, the buffer structure 15 located between the inclined surface 131 and the bottom wall 12 can be as follows: Figure 8As shown, when the impact energy from the left and right sides is transmitted to the printing element substrate 3, a bending moment M will be generated on the buffer structure 15. This bending moment M can easily cause the buffer structure 15 to bend and deform. This bending deformation can consume more impact energy, so that the impact energy transmitted to the printing element substrate 3 is relatively small. Therefore, the possibility of the printing element substrate 3 deforming, cracking or breaking due to impact energy is relatively small.

[0099] In some other embodiments, the orientation of the third projection 12a relative to the first projection 131a and the second projection 3a is as follows: Figure 9 As shown, the buffer structure 15 located between the inclined surface 131 and the bottom wall 12 in the box 1 includes, as shown in the figure, Figure 10 As shown, the thinner part of the trapezoidal portion of the buffer structure 15 has a relatively weak load-bearing capacity and is prone to deformation. The deformation of the thinner part of the buffer structure 15 can consume more impact energy, so that the impact energy transmitted to the printing element substrate 3 is relatively small. Therefore, the possibility of structural problems such as deformation, cracking or breakage of the printing element substrate 3 due to impact energy is relatively small.

[0100] The following content will mainly focus on... Figure 5 The third projection 12a shown is parallel to the left-right direction and the second projection 3a are used as examples to describe the buffer structure including the wedge-shaped part.

[0101] In some embodiments, please refer to Figure 3 As shown, the cartridge body 1 includes two guided portions 14, one of which is located on the left side of the bottom wall 12, and the other is located on the right side of the bottom wall 12. The guided portions 14 are protruding structures. When the ink cartridge is installed in the image forming apparatus, the guide groove of the image forming apparatus can slide into the guided portion 14 to guide the ink cartridge into the correct position within the image forming apparatus. When the ink cartridge falls, either guided portion 14 may withstand an impact force F.

[0102] In some other embodiments (not shown in the figures), the box body may not have the guided portions located on the left and right sides of the bottom wall.

[0103] In some embodiments, please refer to Figure 3 As shown, the direction of the impact force F can intersect with the vertical direction.

[0104] In some other embodiments, the direction of the impact force F may be parallel to the vertical direction.

[0105] In some embodiments, please refer to Figure 3 As shown, the direction of the impact force F can intersect with the left and right directions.

[0106] In some other embodiments, the direction of the impact force F may be parallel to the left-right direction.

[0107] In some embodiments, please refer to Figure 3 As shown, the housing 1 may include a reinforcing rib 16, which is disposed in the cavity 13 and located above the printing element substrate 3. Inclined surfaces 131 are provided on both the left and right sides of the reinforcing rib 16.

[0108] In some embodiments, please refer to Figure 11 or Figure 12 As shown, the inclined surface 131 may include a planar portion 1311.

[0109] In some embodiments, please refer to Figure 11 As shown, the portion of the planar portion 1311 that is closer to the printing element substrate 3 is closer to the plane where the bottom wall 12 is located, and the portion of the planar portion 1311 that is farther away from the printing element substrate 3 is farther away from the plane where the bottom wall 12 is located.

[0110] In some embodiments, please refer to Figure 12 As shown, the portion of the planar portion 1311 that is closer to the printing element substrate 3 is further away from the plane where the bottom wall 12 is located, and the portion of the planar portion 1311 that is further away from the printing element substrate 3 is closer to the plane where the bottom wall 12 is located.

[0111] In some embodiments, please refer to Figure 13 or Figure 14 As shown, the inclined surface 131 may include the curved surface 1312.

[0112] In some embodiments, please refer to Figure 13 As shown, the curved surface 1312 protrudes along a direction T away from the bottom wall 12, wherein the direction T has an acute angle with the vertical direction.

[0113] In some other embodiments, the direction T can be parallel to the up and down direction.

[0114] In some embodiments, please refer to Figure 14 As shown, the curved surface 1312 is concave along the direction X near the bottom wall 12, wherein the direction X has an acute angle with the up and down direction.

[0115] In some other embodiments, the X direction can be parallel to the up and down direction.

[0116] In some embodiments, please refer to Figure 15 or Figure 16 As shown, at least one outer side of the printed element substrate 3 along the left-right direction is provided with two connected inclined surfaces 131. In the two connected inclined surfaces 131, the extending direction of one inclined surface 131 intersects the extending direction of the other inclined surface 131.

[0117] Please refer to Figure 15 or Figure 16 As shown, the left side of the printed element substrate 3 may include two connected inclined surfaces 131, and the right side of the printed element substrate 3 may also include two connected inclined surfaces 131.

[0118] In some embodiments, please refer to Figure 15 As shown, in two connected inclined surfaces 131, the connecting portion 1313 between the two connected inclined surfaces 131 is higher than other parts of either inclined surface 131.

[0119] In some embodiments, please refer to Figure 16 As shown, in two connected inclined surfaces 131, the connecting portion 1313 between the two connected inclined surfaces 131 is lower than other portions of either inclined surface 131.

[0120] In some embodiments, please refer to Figure 17 or Figure 18 As shown, the inclined surface 131 may be provided with a recess 1314, and the number of recesses 1314 may be one, two or more. The recesses 1314 of the inclined surface 131 are also prone to deformation in order to dissipate impact energy.

[0121] In some embodiments, please refer to Figure 17 As shown, the cross-sectional shape of the recess 1314 may include a U-shape.

[0122] In some embodiments, please refer to Figure 18 As shown, the cross-sectional shape of the recess 1314 may include a C-shape or a U-shape. If multiple connected C-shaped or U-shaped recesses 1314 are included, the inclined surface 131 may be regarded as an inclined wavy surface.

[0123] The above regarding Figures 11-18 The main part of the inclined surface 131 shown is inclined so that the thickness of different parts of the buffer structure 15 located between the inclined surface 131 and the bottom wall 12 in the box body 1 is different in the left and right direction, so that the buffer structure 15 has a part that is easy to deform, and consumes relatively more impact energy through deformation.

[0124] According to the above-mentioned Figures 15-18 As can be seen from the illustrated embodiment, the buffer structure 15 located between the inclined surface 131 and the bottom wall 12 may also include, for example, Figure 19The diagram shows a first portion 153, a second portion 154, and a third portion 155 distributed in a left-right direction. The second portion 154 is located between the first portion 153 and the third portion 155. The thickness dimensions h1 of the first portion 153 and h3 of the third portion 155 can both be smaller than the thickness dimension h2 of the second portion 154. In some other embodiments (not shown in the figure), the thickness dimensions h1 of the first portion and h3 of the third portion can both be larger than the thickness dimension h2 of the second portion.

[0125] The following content of this article will mainly focus on "such as Figure 20 The inclined surface 131 shown includes a connected flat portion 1311 and an arcuate portion 1312. In this configuration, the arcuate portions 1312 located on the left and right sides of the flat portion 1311 can reduce stress concentration.

[0126] In some other embodiments (not shown in the figures), a grid structure or a hollow structure may be provided within the buffer structure so that the portion of the buffer structure located below the inclined surface is more likely to deform, thereby more easily absorbing a relatively large amount of impact energy.

[0127] In some embodiments, please refer to Figure 21 As shown, the housing 1 includes an ink supply component 17 and a support component 18 connected to each other. The support component 18 is located below the ink supply component 17. A first part of the electrical wiring board is mounted on the ink supply component 17, and a second part of the electrical wiring board and the printing element board 3 are mounted on the support component 18. The receiving cavity 171 of the ink supply component 17 communicates with the ink supply channel of the support component 18. Please refer to [reference needed]. Figure 22 As shown, the ink supply channel 181 of the supporting member is connected to the ink jet nozzle 31 of the printing element substrate 3. The ink located in the receiving cavity 171 can flow to the ink jet nozzle 31 through the ink supply channel 181, and the energized printing element substrate 3 can control the ink located in the ink jet nozzle 31 to be ejected onto the printing medium.

[0128] The ink supply channel 181 is separated from the cavity 13.

[0129] Additionally, the ink supply component 17 and the support component 18 can be integrally molded, bonded, welded, or detachably connected. Detachable connections include threaded connections or snap-fit ​​connections.

[0130] Furthermore, the ink supply member 17 and the support member 18 enclose and form the cavity 13 described above. The inclined surface 131 may be part of the ink supply member 17, or the inclined surface 131 may be part of the support member 18.

[0131] Furthermore, the structural wall of the support member 18 facing away from the ink member 17 is a bottom wall 12 for supporting the printing element substrate 3 and the second part 22. The bottom wall 12 may include a flat wall, or it may include a stepped structure. The bottom wall 12 may include a recessed receiving groove for accommodating at least a portion of the structure of the printing element substrate 3.

[0132] In some embodiments, please refer to Figure 21 As shown, the receiving cavity 171 may include an ink storage cavity 171a and a filter cavity 171b. The ink storage cavity 171a serves as the main space for storing ink, and it can communicate with the ink supply channel 181 through the filter cavity 171b. The ink cartridge may include a filter (not shown in the figure), which is disposed at an opening at the top of the filter cavity 171b. When ink flows from the ink storage cavity 171a to the filter cavity 171b, the filter can filter impurities in the ink, thereby improving the print quality of the ink cartridge.

[0133] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An ink cartridge, characterized by, The ink cartridge includes a cartridge body, an electrical wiring board, and a printing element board. The electrical wiring board has an electrical contact portion disposed on the main side wall of the cartridge body, and the printing element board is disposed on the bottom wall of the cartridge body. The box body is provided with a cavity, which is recessed in the portion of the main side wall near the bottom wall. The cavity includes an inclined surface, which is disposed opposite to the bottom wall. The projection of the inclined surface onto the plane of the main sidewall is the first projection, and the projection of the printing element substrate onto the plane of the main sidewall is the second projection. There is an acute angle between the first projection and the second projection, and the first projection is located at least one outside the second projection along the left-right direction of the ink cartridge.

2. The ink cartridge of claim 1, wherein The inclined surface includes a planar portion, and / or the inclined surface includes an arcuate portion.

3. The ink cartridge of claim 2, wherein If the inclined surface includes the arcuate portion, the arcuate portion protrudes in a direction away from the bottom wall, or the arcuate portion is recessed in a direction close to the bottom wall.

4. The ink cartridge of claim 1, wherein The printed element substrate has two connected inclined surfaces on at least one outer side along the left-right direction, wherein the extending direction of one of the inclined surfaces intersects the extending direction of the other inclined surface.

5. The ink cartridge of claim 4, wherein In two connected inclined surfaces, the connecting portion between the two connected inclined surfaces is higher than other parts of either inclined surface, or the connecting portion between the two connected inclined surfaces is lower than other parts of either inclined surface.

6. The ink cartridge according to claim 1, characterized in that, The inclined surface is provided with a recessed portion.

7. The ink cartridge according to any one of claims 1 to 6, characterized in that, The projection of the portion of the bottom wall located below the inclined surface onto the plane of the main side wall is a third projection, and at least a portion of the third projection is parallel to the left-right direction. The first projection and the third projection are at an angle α, which satisfies 5°≤α≤30°.

8. The ink cartridge according to claim 7, characterized in that, The box body has a buffer structure located between the inclined surface and the bottom wall. The shape of the buffer structure includes a wedge-shaped portion, and the buffer structure includes a wedge tip and a wedge tail distributed in the left-right direction. The wedge tip faces the printing element substrate, and the wedge tip is located between the wedge tail and the printing element substrate; Alternatively, the wedge tip faces away from the printing element substrate, and the wedge tail is located between the wedge tip and the printing element substrate.

9. The ink cartridge according to claim 7, characterized in that, The box body has a buffer structure located between the inclined surface and the bottom wall. The buffer structure includes a first part, a second part and a third part distributed in the left-right direction. The second part is located between the first part and the third part. The thickness h1 of the first part and the thickness h3 of the third part are both greater than or less than the thickness h2 of the second part.

10. The ink cartridge according to any one of claims 1 to 6, characterized in that, The housing includes an ink supply component and a support component connected to each other. The support component is located below the ink supply component. The electrical wiring board has an electrical contact portion disposed on the ink supply component. The printing element board is disposed on the bottom wall of the support component. The receiving cavity of the ink supply component is connected to the ink jet nozzle of the printing element board through the ink supply channel of the support component. The ink supply component and the support component together form the cavity.

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