Ink cartridge chip, ink cartridge and printing system

Abstract

The utility model provides a kind of ink cartridge chip, ink cartridge and printing system, ink cartridge chip is detachably mounted to the box body of ink cartridge, ink cartridge chip includes substrate, multiple contacts are equipped on substrate, along the insertion direction of ink cartridge chip, multiple contacts are all located the upstream end of the front end face of box body;When multiple contacts are projected onto straight line parallel to insertion direction along first direction, at least two contacts are projected onto different positions.Printing system includes ink cartridge, ink cartridge is equipped with above-mentioned ink cartridge chip, this ink cartridge chip production difficulty is low, can guarantee contact stability and improve communication stability.

Description

Technical Field

[0001] This utility model relates to the field of printing consumables technology, specifically to an ink cartridge chip, an ink cartridge equipped with the ink cartridge chip, and a printing system including the aforementioned ink cartridge. Background Technology

[0002] Consumable cartridges are commonly used printing consumables in printing equipment. They are detachably installed inside the printing device to provide developer. Ink cartridges, as a commonly used type of printing consumable, are used to provide developer to inkjet printers; ink cartridges are detachably installed inside the mounting cavity of the printhead carriage of the inkjet printer.

[0003] like Figure 1 As shown, the ink cartridge 91 includes a cartridge body 911 and an ink cartridge chip 912. The ink cartridge chip 912 is preferably installed at the junction of the top wall and the front wall of the cartridge body 911. The ink cartridge chip 912 includes two or more contacts 9121, which are distributed sequentially along the height direction of the cartridge body 911. Along the insertion direction of the ink cartridge 91, the downstream end of each contact 9121 is substantially flush with the front wall of the cartridge body 911. Figure 2 and Figure 3 When the ink cartridge 91 is installed on the printhead 92 of the inkjet printer, two or more contacts 9121 on the ink cartridge chip 912 simultaneously make contact with two or more contact pins 921 in the printhead 92, thereby establishing communication between the ink cartridge chip 912 and the inkjet printer. This allows the inkjet printer to know relevant information about the ink cartridge 91 in real time, such as the ink color, ink level, number of times the ink cartridge 91 has been used, model number, brand number, etc.

[0004] However, the existing 912 cartridge chip design has the following drawbacks: First, in existing ink cartridge chips 912, the downstream end of each contact 9121 is basically flush with the front wall of the cartridge body 911. During the installation of the ink cartridge 91 into the mounting cavity of the inkjet printer's printhead, excessive force can cause the front wall of the cartridge body 911 to collide with the mounting cavity of the printhead. Because the chip contacts are flush with the front wall of the cartridge body 911, this can potentially damage the ink cartridge chip 912. Even though many ink cartridge chip 912 substrates use rigid PCBs, making minor collisions unlikely to cause damage, such collisions can affect the fixed position of the ink cartridge chip 912 relative to the cartridge body 911, causing the fixed position of the ink cartridge chip 912 to shift or even detach, affecting communication stability.

[0005] Secondly, during the installation of the ink cartridge 91 into the mounting cavity of the inkjet printer's printhead, the cartridge 91's housing has a certain degree of freedom relative to the mounting cavity, or due to factors such as frequent replacement and / or disassembly of the cartridge 91, which can easily cause structural deformation of multiple contact pins 921. Therefore, it cannot be completely guaranteed that multiple contacts on the cartridge chip 912 can simultaneously establish electrical connections with multiple contact pins 921. When the inkjet printer's live contact pin first establishes an electrical connection with the cartridge chip 912 while the ground contact pin is left floating, if either the live contact pin or the cartridge chip 912 carries static electricity, it may cause an excessive instantaneous current, damaging the cartridge chip 912. Even if the cartridge chip 912 has an internal ESD protection circuit, the floating ground contact pin will still affect signal security. Summary of the Invention

[0006] To address the aforementioned problems, the primary objective of this invention is to provide an ink cartridge chip that is not easily damaged, ensures stable contact, and improves communication stability.

[0007] The second objective of this invention is to provide an ink cartridge equipped with the aforementioned ink cartridge chip.

[0008] The third objective of this invention is to provide a printing system equipped with the aforementioned ink cartridge.

[0009] To achieve the main objective of this utility model, this utility model provides an ink cartridge chip that is installed on the cartridge body. The ink cartridge chip includes a substrate with multiple contacts on the substrate. Along the insertion direction of the ink cartridge chip, the multiple contacts are all located at the upstream end of the front end face of the cartridge body. When the multiple contacts are projected onto a straight line parallel to the insertion direction along a first direction, at least two contacts are projected to different positions.

[0010] As can be seen from the above, by improving the design of the ink cartridge chip structure, we can reduce the chance of damage during chip installation and ensure that each contact establishes a stable electrical connection with the corresponding chip pin in the inkjet printer.

[0011] A further proposed solution is to have four contacts, each of which is positioned differently when projected onto a straight line along a first direction, which is the height direction of the ink cartridge.

[0012] As can be seen from the above, by improving the design of the contact points, the contacts are arranged in a stepped manner, staggered from one another, and progressively advancing along the insertion direction of the ink cartridge chip. This allows each contact to connect to its corresponding chip pin one by one according to the increasing vertical spacing when the ink cartridge chip is installed on the printhead of the inkjet printer, achieving a progressive electrical connection. This solves the problems of high precision requirements for the relative position of each contact, high precision requirements for the ink cartridge chip installation position, high precision requirements for the position of the chip pins on the printhead, and high precision requirements for the contact-chip pin mating when multiple contacts are connected simultaneously. Furthermore, through the structural design of the ink cartridge chip, the chip pins on the printhead have an adaptive height adjustment function, ensuring a stable electrical connection and maintaining stable contact pressure between each contact and its corresponding chip pin, thus enabling the ink cartridge chip to establish stable communication with the inkjet printer.

[0013] A further alternative is that, along the insertion direction, the downstream end of the substrate has a stepped portion, and a contact is mounted on the first step of the stepped portion.

[0014] As can be seen from the above, this design makes the positioning of each contact point simpler, more convenient and more accurate, reduces the difficulty of chip production, and reduces the space occupied by the ink cartridge chip, so as to provide better space for the chip stylus on the printing carriage, ensure that the chip stylus can make stable elastic deformation and make stable contact with the corresponding contact point, and ensure that the contact pressure is moderate.

[0015] A further embodiment is that the contact has a first plate portion, a second plate portion, and a third plate portion, with the second plate portion connected between the first plate portion and the third plate portion. The cross-section of the contact is U-shaped. The first plate portion is attached to the front side of the substrate, the second plate portion is attached to the end face of the step, and the third plate portion is attached to the back side of the substrate. Alternatively, the contact has a first plate portion and a second plate portion, which are adjacent to each other. The cross-section of the contact is L-shaped. The first plate portion is attached to the front side of the substrate, and the second plate portion is attached to the end face of the step.

[0016] As can be seen from the above, the shape of the contact is diverse, and the second plate is located in the thickness direction of the substrate so that the ink cartridge chip can be adapted to the cartridge body of different models of ink cartridges; at the same time, the corner formed at the junction of the first plate and the second plate, the first plate or the second plate can be reliably pressed against the corresponding chip contact pin, so that the chip contact pin applies appropriate pressure to the contact through elastic deformation, ensuring that the chip contact pin and the contact establish a stable electrical connection.

[0017] A further proposed solution is that the first and / or second plate portions of the contact can contact the chip pins inside the inkjet printer; or a chamfered structure is provided at the junction of the first and second plate portions.

[0018] As can be seen from the above, this design can improve the stability of the contact between the contact point and the chip pin. A further proposed solution is that the four contacts are a ground contact, a clock contact, a power contact, and a data contact, with the ground contact being the closest to the front end face; the first distance between the ground contact and the front end face is greater than the second distance between the front end of the ink supply needle of the inkjet printer and the inner wall of the front end wall of the ink cartridge; the ink cartridge chip also includes a memory, which is mounted on the substrate and electrically connected to the substrate.

[0019] As can be seen from the above, setting the grounding contact as the downstream contact ensures that when the ink cartridge chip contact comes into contact with the chip pins in the print head, grounding is performed first to ensure chip safety and circuit reliability.

[0020] To achieve the second objective of this utility model, this utility model provides an ink cartridge, including a cartridge body, wherein the ink cartridge chip described above is also included, and the ink cartridge chip is mounted on the cartridge body.

[0021] As can be seen from the above, by setting the ink cartridge chip, the stability and reliability of information interaction between the ink cartridge and the inkjet printer can be improved, while ensuring the safety of ink cartridge installation and removal, and also helping to reduce the production cost of ink cartridges.

[0022] A further design involves a notch at the junction of the top wall and the front wall of the cartridge, with a mounting plate inside the notch. The mounting plate is parallel to the side wall of the cartridge, and the ink cartridge chip is mounted on the mounting plate.

[0023] As can be seen from the above, the installation position of the ink cartridge chip relative to the cartridge body can be adjusted according to the ink cartridge model. The mounting plate on the cartridge body can provide the installation position for the ink cartridge chip and ensure that the contacts of the ink cartridge chip correspond one-to-one with the chip pins on the printhead.

[0024] To achieve the third objective of this utility model, this utility model provides a printing system, including an inkjet printer. The inkjet printer includes a printhead carriage with a mounting cavity containing multiple chip pins. The printing system includes the aforementioned ink cartridge, which is detachably installed in the mounting cavity. The multiple chip pins correspond one-to-one with multiple contacts, and the contacts are electrically connected to their corresponding chip pins.

[0025] As can be seen from the above, the use of the aforementioned ink cartridges in the printing system can improve the stability and reliability of information interaction between the ink cartridges and the inkjet printer, while ensuring the safety of ink cartridge installation and removal, and also helping to reduce the production cost of ink cartridges.

[0026] A further approach is to distribute multiple chip pins along the height of the ink cartridge; the height at which the chip pins protrude towards the ink cartridge chip increases with the increase of the distance between the contact point and the front end surface.

[0027] As can be seen from the above, this design can ensure a stable electrical connection between each chip pin and its corresponding contact, while also ensuring that the contact pressure between each chip pin and its corresponding contact is moderate, thus ensuring the stability of communication. Attached Figure Description

[0028] Figure 1 This is a structural diagram of an existing ink cartridge.

[0029] Figure 2 It is a cross-sectional view of the omitted components after the existing ink cartridge and printhead are assembled.

[0030] Figure 3 This is a diagram showing the contact structure between the contacts of the ink cartridge chip and the corresponding chip pins inside the print head.

[0031] Figure 4 This is a structural diagram of an embodiment of the printing system of this utility model, with some components omitted.

[0032] Figure 5 This is a partial structural diagram of the ink cartridge in an embodiment of the printing system of this utility model.

[0033] Figure 6 This is a structural diagram of the ink cartridge chip from a first-view perspective of an embodiment of the printing system of this utility model.

[0034] Figure 7 This is a structural diagram of the ink cartridge chip from a second perspective in an embodiment of the printing system of this utility model.

[0035] Figure 8 This is a diagram showing the contact structure between the contacts of the ink cartridge chip and the corresponding chip pins inside the print carriage in an embodiment of the printing system of this utility model.

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0037] Printing System Implementation Examples Reference Figure 4 The printing system includes an inkjet printer and an ink cartridge 2. The inkjet printer includes a print head 1. The print head 1 is provided with a mounting cavity 11. A chip pin group is provided in the mounting cavity 11. The chip pin group includes two or more chip pins 12. In this embodiment, the two or more chip pins 12 are distributed along the height direction Z of the ink cartridge 2.

[0038] Combination Figure 5The ink cartridge 2 is detachably installed within the mounting cavity 11. The ink cartridge 2 includes a cartridge body 21 and an ink cartridge chip 22, with the ink cartridge chip 22 mounted on the cartridge body 21. In some embodiments, the ink cartridge chip 22 is detachably connected to the cartridge body 21; in other embodiments, the ink cartridge chip 22 may also be fixedly connected to the cartridge body 21 or integrally formed. The ink cartridge chip 22 is used to establish communication with the inkjet printer, enabling the inkjet printer to obtain real-time information about the ink cartridge 2, such as ink color, ink level, number of uses of the ink cartridge 2, model number of the ink cartridge 2, brand of the ink cartridge 2, etc.

[0039] In this embodiment, a notch is provided at the junction of the top wall and the front wall (the end wall with the ink outlet 214) of the cartridge body 21. A mounting plate 211 is formed within the notch, and the mounting plate 211 is parallel to the side wall of the cartridge body 21 (adjacent to the top wall and the front wall). The ink cartridge chip 22 is mounted on the mounting plate 211. The position of the ink cartridge chip 22 matches the position of the chip contact assembly in the mounting cavity 11, so that after the ink cartridge 2 is installed in the mounting cavity 11, the chip contact assembly can establish communication with the ink cartridge chip 22.

[0040] Combination Figure 6 and Figure 7 The ink cartridge chip 22 includes a substrate 221, contacts 222 and memory 223. There are multiple contacts 222. Along the insertion direction X of the ink cartridge chip 22, multiple contacts 222 are located at the upstream end of the front end face 212 of the cartridge body 21, that is, each contact 222 has a non-zero gap with the front end face 212. Furthermore, when multiple contacts 222 are projected onto a straight line C1 parallel to the insertion direction X along the first direction (i.e., the height direction Z), at least two contacts 222 are projected onto different positions. In this embodiment, there are four contacts 222, namely ground contact GND, clock contact CLK, power contact VCC, and data contact DAT. The four contacts 22 are projected onto the straight line C1 at different positions along the first direction. That is, there is no complete overlap between the projections of ground contact GND on the straight line C1, clock contact CLK on the straight line C1, power contact VCC on the straight line C1, and data contact DAT on the straight line C1, resulting in a stepped distribution of multiple contacts.

[0041] It is understood that in some embodiments, the contact 222 located at the downstream end of the insertion direction X may also be flush with the front end face 212, that is, the distance between the contact 222 located at the downstream end of the insertion direction X and the front end face 212 is zero.

[0042] Preferably, as in this embodiment, along the insertion direction X, the downstream end of the substrate 221 has a stepped portion 2211, and a contact 222 is installed on a step 22111 of the stepped portion 2211, that is, at most one contact 222 is installed on each step 22111. By providing the stepped portion 2211 on the substrate 221, the positioning of each contact 222 is simpler, more convenient and more accurate. At the same time, it is also beneficial to reduce the manufacturing difficulty of the chip and reduce the space occupied by the ink cartridge chip 22, so as to provide better space for the chip contact pin group in the print head 1. While ensuring that the chip contact pin 12 can undergo stable elastic deformation and make stable contact with the corresponding contact 222, the contact pressure between the chip contact pin 12 and the contact 222 is moderate. It is understood that in other embodiments, the substrate 221 may also be in other shapes such as rectangle or right trapezoid, and the contact 222 is disposed on the side of the substrate 221; if the substrate 221 is in the shape of a right trapezoid, it is preferable to use the sloping waist of the right trapezoid as the downstream end of the substrate 221.

[0043] Furthermore, the grounding contact GND is closest to the front end face 212. That is, along the insertion direction X, the contact 222 at the downstream end is the grounding contact GND. This design ensures that when the ink cartridge chip 22 contacts the chip pins 12 in the printhead 1, the grounding contact GND is preferentially connected to the corresponding chip pin 12, thus grounding the ink cartridge chip 22 to ensure chip safety and circuit reliability. Therefore, connecting the grounding contact GND first and then connecting the other contacts 222 one by one can establish a stable reference potential, ensure a unified circuit reference, and prevent electrostatic accumulation and discharge from damaging the ink cartridge chip 22. In addition, it can also reduce the impact of power surges and interference, creating a safe and stable working environment for the ink cartridge chip 22. At the same time, this design also makes the ink cartridge chip 22 less likely to be damaged by collision between the cartridge body 21 and the printhead 1 during the installation of the ink cartridge 2. It is understandable that the specific number of contacts 222 can be adjusted according to the specific functions required by the chip. For example, the number of contacts 222 can be two, three, or more than five, to ensure that the ink cartridge chip 22 can meet the usage requirements. Preferably, the grounding contact GND is located at the downstream end of the insertion direction X.

[0044] Furthermore, the first distance W1 between the grounding contact GND and the front end face 213 is greater than the second distance W2 between the front end of the ink supply needle 13 of the inkjet printer and the inner wall face 213 of the front end wall of the ink cartridge 21. Preferably, when the ink cartridge 21 is installed into the mounting cavity 11, the ink outlet 214 establishes a connection with the ink supply needle 13 at the latest, later than the time when the ink cartridge chip 22 establishes an electrical connection with the chip contact needle 12. With the design of the first distance W1 and the second distance W2, the ink cartridge chip 22 is powered on only after the ink outlet 214 establishes a connection with the ink supply needle 13, thereby preventing the inkjet printer from receiving an electrical signal from the ink cartridge chip 22 before the ink outlet 214 establishes a connection with the ink supply needle 13 or before the air inlet 215 establishes a connection with the air needle 14, which could lead to ink leakage caused by the inkjet printer actuating the printhead 1 and / or the ink cartridge 2 during the installation of the ink cartridge 21. In this embodiment, the contact 222 has a first plate portion 2221, a second plate portion 2222, and a third plate portion 2223. The second plate portion 2222 is connected between the first plate portion 2221 and the third plate portion 2223, such that the cross-section (projection along the height direction Z) of the contact 222 is approximately U-shaped. When the contact 222 is disposed on the step 22111 of the stepped portion 2211 of the substrate 221, the first plate portion 2221 is attached to the front side of the substrate 221, and the second plate portion 2222 is attached to the front side of the substrate 221. The end face of step 22111, and the third plate portion 2223, are attached to the back side of substrate 221 to form a state that covers step 22111. This improves the firmness of the connection between contact 222 and substrate 221, and also gives contact 222 multiple surfaces that can contact the corresponding chip pin 12. For example, the first plate portion 2221 and / or the second plate portion 2222 of contact 222 can contact the chip pin 12. It can be understood that the second plate portion 2222 is located in the thickness direction of substrate 221. The angle formed at the junction of the first plate portion 2221 and the second plate portion 2222 can reliably abut against the corresponding chip pin 12, so that the chip pin 12 applies appropriate pressure to contact 222 through elastic deformation, ensuring that a stable electrical connection is established between chip pin 12 and contact 222.

[0045] In some embodiments, the contact 222 also has only a first plate portion 2221 and a second plate portion 2222, which are connected to make the cross-section of the contact 222 approximately L-shaped. The first plate portion 2221 is attached to the front side of the substrate 221, and the second plate portion 2222 is attached to the end face of the step 22111. It can be seen that the shape of the contact 222 is diverse, so that the ink cartridge chip 22 can be adapted to the cartridge body 21 of different models of ink cartridge 2. When the contact 222 has only the first plate portion 2221 and the second plate portion 2222, the back side of the ink cartridge chip 22 is flat, which helps to further simplify the structure of the mounting plate 211 and allows the ink cartridge chip 22 to be better attached and mounted on the mounting plate 211.

[0046] Preferably, a chamfered structure can be provided at the junction of the first plate portion 2221 and the second plate portion 2222 to increase the contact area between the contact 222 and the corresponding chip pin 12, improve contact stability, and thus improve communication stability.

[0047] The memory 223 is mounted on the substrate 221 and is electrically connected to the substrate 221. The memory 223 is used to cooperate with each contact 222 to realize data interaction, status monitoring and function management with the inkjet printer.

[0048] During the installation of the ink cartridge 2 into the mounting cavity 11, multiple contacts 222 on the ink cartridge chip 22 correspond one-to-one with two or more chip pins 12 of the chip pin group, and the multiple contacts 222 are electrically connected to the corresponding chip pins 12 one by one. That is, when the ink cartridge chip 22 establishes a connection with the chip pin group, the contact 222 at the downstream end in the insertion direction X establishes an electrical connection with the corresponding chip pin 12 first, and the contact 222 at the upstream end in the insertion direction X establishes an electrical connection with the corresponding chip pin 12 last. For example, along the insertion direction X, the four contacts 222 of the ink cartridge chip 22 are, in sequence, the data contact DAT, the power contact VCC, the clock contact CLK, and the ground contact GND. Therefore, the conduction sequence of the ink cartridge chip 22 and the chip contact group is as follows: the ground contact GND is electrically connected to the corresponding chip contact 12, the clock contact CLK is electrically connected to the corresponding chip contact 12, the power contact VCC is electrically connected to the corresponding chip contact 12, and the data contact DAT is electrically connected to the corresponding chip contact 12.

[0049] Combination Figure 8The height at which each chip pin 12 of the chip pin group protrudes toward the ink cartridge chip 22 increases with the increase of the vertical distance between the corresponding contact 222 and the front end face 212 of the cartridge body 21. That is, the height at which the chip pin 12 electrically connected to the contact 222 located at the downstream end of the insertion direction X protrudes toward the ink cartridge chip 22 is less than the height at which the chip pin 12 electrically connected to the contact 222 located at the upstream end of the insertion direction X protrudes toward the ink cartridge chip 22. For example, in this embodiment, the vertical distance between the ground contact GND and the front surface 212 is L1, the vertical distance between the clock contact CLK and the front surface 212 is L2, the vertical distance between the power contact VCC and the front surface 212 is L3, and the vertical distance between the data contact DAT and the front surface 212 is L4, where L1 < L2 < L3 < L4. Correspondingly, the chip pin 12 corresponding to the data contact DAT protrudes the greatest height towards the cartridge chip 22, followed by the chip pin 12 corresponding to the power contact VCC, then the chip pin 12 corresponding to the clock contact CLK, and finally the chip pin 12 corresponding to the ground contact GND. This design ensures a stable electrical connection between each chip pin 12 and its corresponding contact 222, while also ensuring moderate contact pressure between each chip pin 12 and its corresponding contact 222, thus guaranteeing communication stability.

[0050] Through the structural design of the ink cartridge chip 22, when the ink cartridge 2 is inserted into the printer, the stepped contacts 222 of the ink cartridge chip 22, due to their varying distances from the downstream end face of the substrate 221, ensure that each contact 222 contacts the corresponding chip pin 12 in a specific order, achieving progressive contact. This contact method serves two purposes: firstly, it acts as a physical guide during installation; even if there is a slight tilt or positional deviation when the ink cartridge 2 is inserted, the first contact 222 guides subsequent contacts 222 to gradually align, reducing misalignment between the contacts 222 and the chip pin 12 caused by installation angle or positional errors; secondly, the stepped distribution of the contacts 222 on different planes (planes perpendicular to the insertion direction) compensates for positional deviations of the chip pins 12, and combines this with the convexity of each chip pin 12 towards the ink cartridge chip 22. The different heights allow each chip pin 12 to adapt to its corresponding contact 222, adaptively adjusting the contact pressure between itself and the contact 222. This ensures moderate contact pressure between each chip pin 12 and the contact 222, guaranteeing the stability of the electrical connection between the chip pin 12 and the contact 222, and preventing accelerated wear of some chip pins 12 and / or contacts 222. Simultaneously, the distribution of the contacts 222 reduces the manufacturing precision requirements for the ink cartridge chip 22 (each contact 222 does not need to be strictly on the same plane), reducing the manufacturing difficulty and cost of the ink cartridge chip 22. It also reduces the manufacturing precision requirements for each chip pin 12 in the chip pin group (the contact portions of each chip pin 12 do not need to be strictly on the same plane), and weakens the impact of environmental conditions on the chip pins 12.

[0051] In summary, by configuring the ink cartridge 2 with the aforementioned ink cartridge chip 22, the inkjet printer can improve the stability and reliability of information interaction between the ink cartridge 2 and the inkjet printer, while ensuring the safety of the ink cartridge 2 during disassembly and assembly, and also helping to reduce the production cost of the ink cartridge 2.

[0052] Finally, it should be emphasized that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An ink cartridge chip, mounted on the cartridge body, the ink cartridge chip comprising a substrate having a plurality of contacts on the substrate, characterized in that: Along the insertion direction of the ink cartridge chip, the plurality of contacts are all located at the upstream end of the front end face of the cartridge body; When the plurality of the contacts are projected onto a straight line parallel to the insertion direction along the first direction, at least two of the contacts are projected to different positions.

2. The ink cartridge chip according to claim 1, characterized in that: The number of contact points is four, and the four contact points are projected onto the straight line at different positions along the first direction. The first direction is the height direction of the ink cartridge.

3. The ink cartridge chip according to claim 2, characterized in that: Along the insertion direction, the downstream end of the substrate has a stepped portion, and one of the contacts is mounted on the first step of the stepped portion.

4. The cartridge chip according to claim 3, characterized in that: The contact has a first plate portion, a second plate portion, and a third plate portion, with the second plate portion connected between the first plate portion and the third plate portion. The contact has a U-shaped cross-section. The first plate portion is attached to the front side of the substrate, the second plate portion is attached to the end face of the step, and the third plate portion is attached to the back side of the substrate; or The contact has a first plate portion and a second plate portion, which are adjacent to each other. The cross-section of the contact is L-shaped. The first plate portion is attached to the front side of the substrate, and the second plate portion is attached to the end face of the step.

5. The cartridge chip according to claim 4, characterized in that: The first and / or second plate portions of the contact can contact the chip pins within the inkjet printer; or A chamfered structure is provided at the junction of the first plate and the second plate.

6. The cartridge chip according to any one of claims 2 to 5, characterized in that: The four contacts are a ground contact, a clock contact, a power contact, and a data contact, with the ground contact being the closest to the front end face. The first distance between the grounding contact and the front end face is greater than the second distance between the front end of the ink supply needle of the inkjet printer and the inner wall of the front end wall of the ink cartridge. The cartridge chip also includes a memory, which is mounted on the substrate and electrically connected to the substrate.

7. An ink cartridge comprising a cartridge body, characterized by It also includes the ink cartridge chip as described in any one of claims 1 to 6, wherein the ink cartridge chip is mounted on the cartridge body.

8. The ink cartridge according to claim 7, characterized in that: The top wall of the cartridge body has a notch at the junction with the front wall of the cartridge body, and a mounting plate is provided in the notch. The mounting plate is parallel to the side wall of the cartridge body, and the ink cartridge chip is mounted on the mounting plate.

9. A printing system, including an inkjet printer, the inkjet printer including a printhead carriage, the printhead carriage having a mounting cavity, the mounting cavity being provided with a plurality of chip contact pins, characterized in that: The printing system further includes an ink cartridge as described in claim 7 or 8, the ink cartridge being detachably installed in the mounting cavity, and the plurality of chip pins corresponding one-to-one with the plurality of contacts, the contacts being electrically connected to the corresponding chip pins.

10. The printing system of claim 9, wherein: a plurality of chip pins are distributed along a height direction of the ink cartridge; a height of the chip pin protruding to the ink cartridge chip increases with an increase of a distance between the contact and the front end face.

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