CN117325565A

CN117325565A - Ink box chip, ink box and ink-jet printing equipment

Info

Publication number: CN117325565A
Application number: CN202311471060.7A
Authority: CN
Inventors: 文冠果; 罗寿杰; 车秩柳
Original assignee: Zhuhai Tianwei Microelectronics Co ltd
Current assignee: Zhuhai Tianwei Microelectronics Co ltd
Priority date: 2023-11-06
Filing date: 2023-11-06
Publication date: 2024-01-02

Abstract

The invention provides an ink box chip, an ink box and ink jet printing equipment, wherein the ink box chip comprises a substrate and an electronic module, the electronic module comprises a plurality of functional pins, a plurality of connecting terminals are arranged on the first surface of the substrate, and each connecting terminal comprises a contact area electrically contacted with a contact pin on the printing equipment; and, at least one connection terminal comprises a low resistivity component comprising or electrically connected to a contact area, the low resistivity component being electrically connected to the functional pin; the electrical resistance between the edge of the high resistivity component and the low resistivity component is greater than the electrical resistance between the contact area and the functional pin. The ink box provided by the invention is provided with the ink box chip. The invention can avoid the mutual interference of signals between different connecting terminals when foreign matters such as ink drop.

Description

Ink box chip, ink box and ink-jet printing equipment

Technical Field

The present invention relates to the technical field of inkjet printing, and in particular, to an ink cartridge chip, an ink cartridge having the same, and an inkjet printing apparatus mounted with the same.

Background

The printing equipment is used as common office equipment, great convenience is provided for modern office, the common printing equipment is divided into ink-jet printing equipment and laser printing equipment, and the ink-jet printing equipment uses an ink box containing ink as a consumable container to jet the ink to paper so as to form characters or patterns to be printed on the paper; the laser printing device uses a toner cartridge containing toner as a consumable container to form text or patterns on a medium to be printed.

Referring to fig. 1, a conventional color inkjet printing apparatus has a housing 11, and the inkjet printing apparatus shown in fig. 1 omits a pallet of the housing 11. The housing 11 is provided with a movement 12 of the ink jet printing apparatus and with a slide along which a carriage 14 reciprocates under the drive of a motor (not visible in fig. 1). A main control circuit board (not visible in fig. 1) is provided in the carriage 14, and communicates with the movement 12 through the flat cable 13.

The carriage 14 is detachably provided with a plurality of ink cartridges 15, and different ink cartridges 15 contain different colors of ink. The structure of the ink cartridge 15 is shown in fig. 2. The ink cartridge 15 has a cartridge body 16, the cartridge body 16 encloses a chamber for accommodating ink, an ink outlet 17 is provided at the lower end of the chamber, and ink in the chamber flows out through the ink outlet 17 and is supplied to an ink supply needle of the carriage 14.

A chip 18 is mounted on the outer wall of the case 16 of the ink cartridge 15, the chip 18 having a substrate provided with a plurality of connection terminals 19 on one side thereof for electrical connection with contact pins on the carriage 14. The other side of the substrate is provided with a memory (not visible in fig. 2), typically a non-volatile memory, such as an EEPROM or FLASH, which stores information related to the ink cartridge, including variable information, which is information that is continuously variable with the printing operation, such as information of the ink margin, the printing duration, the number of printing sheets, etc., and invariable information, which is information that is not variable with the printing operation, such as the type of the ink cartridge, the type of the applicable inkjet printing device, the color of the ink, etc.

After the ink cartridge 15 is mounted to the carriage 14 of the ink jet printing apparatus, the ink jet printing apparatus powers up the chip 18 and reads data stored in the memory of the chip 18 to determine whether the type of the ink cartridge 15 is appropriate, whether the amount of ink remaining in the ink cartridge 15 is sufficient, and the like. The ink jet printing apparatus can execute a print job only after it is judged that the type of the ink cartridge 15 is proper and that there is sufficient ink in the ink cartridge 15.

Referring to fig. 3, five connection terminals 21, 22, 23, 24, 25 are provided on one surface of a substrate 20 of a conventional ink cartridge chip 18, and each of the five connection terminals includes a power terminal, a ground terminal, a clock terminal, a data terminal, and a chip select terminal, and typically, a distance between the ground terminal 25 and the other connection terminals is large.

However, since the distances between the power supply terminal, the clock terminal, the data terminal, and the chip select terminal are small, once there is a foreign matter between the adjacent two connection terminals, for example, ink drops fall between the power supply terminal and the data terminal, a short circuit between the power supply terminal and the data terminal occurs. In the operation of the ink jet printing apparatus, since the carriage is continuously moved back and forth, the ink cartridge 15 is continuously in a shake state, and foreign matters such as ink are dropped in the shake process, even if short-circuiting is performed between the adjacent two connection terminals for a short time, the foreign matters are not short-circuited after dropping with the shake of the ink cartridge.

Based on the purposes of protecting a memory and avoiding data transmission errors, the existing inkjet printing equipment immediately stops working and sends a prompt once detecting that two connecting terminals are short-circuited. However, if the short circuit condition can be eliminated in a short time, the processing mode of stopping the operation immediately after the short circuit occurs brings inconvenience to the user and affects the user experience.

Disclosure of Invention

In order to solve the above-described problems, a first object of the present invention is to provide an ink cartridge chip capable of avoiding the operation from being stopped immediately after the short circuit of the connection terminal.

A second object of the present invention is to provide an ink cartridge mounted with the above ink cartridge chip.

A third object of the present invention is to provide an ink jet printing apparatus using the above ink cartridge.

To achieve the first object of the present invention, the present invention provides an ink cartridge chip including a substrate and an electronic module including a plurality of functional pins, a plurality of connection terminals being provided on a first surface of the substrate, the plurality of connection terminals each including a contact area in electrical contact with a stylus on a printing apparatus; and, at least one connection terminal includes a low resistivity component including or electrically connected to the contact region and a high resistivity component; the low resistivity component is electrically connected to the functional pin, and a resistance between an edge of the high resistivity component and the low resistivity component is greater than a resistance between the contact area and the functional pin.

As can be seen from the above-described solution, since the connection terminal includes the low-resistivity member and the high-resistivity member, the resistance of the high-resistivity member is much greater than that of the low-resistivity member, and the high-resistivity member is formed at the outer periphery of the low-resistivity member, therefore, once there is a foreign matter such as ink between two adjacent high-resistivity members, since the resistivity of the high-resistivity member is large, a large resistance is formed between the two connected high-resistivity members, and even if signals on the two low-resistivity members are different at the same time, the two high-resistivity members electrically isolate the different signals, and the mutual interference of data signals between the two low-resistivity members is not caused.

In addition, because the contact pin of the ink-jet printing device is in contact with the contact part, the contact part is positioned on the low-resistivity component or is electrically connected with the low-resistivity component, and the low-power component is directly and electrically connected to the functional pin of the electronic module, the data transmission between the ink-jet printing device and the electronic module can not be influenced due to the very small resistance of the low-resistivity component, the electronic module can still correctly identify the signal sent by the ink-jet printing device, and the signal sent from the electronic module can also be correctly transmitted to the ink-jet printing device, so that the normal communication between the ink-jet printing device and the electronic module is ensured.

Preferably, the high-resistivity component has a room temperature resistivity of greater than 1.0X10 ^-6 A first film of Ω.m; the low-resistivity part has a room temperature resistivity of less than 2.0X10 ^-7 And a second film of omega.M.

The first film is a carbon film, an alloy film or an organic material film doped with metal powder; the second film is a conductive metal film.

Further, the contact region is a partial region of the low-resistivity member, and the high-resistivity member is formed on the outer periphery of the low-resistivity member.

Thus, once foreign matters such as ink drop between two adjacent high-resistivity components, the two high-resistivity components are short-circuited first, and the larger resistance can avoid direct short-circuiting of two functional pins of the electronic module.

Alternatively, the contact region is a portion of the region of the high resistivity component overlying the low resistivity component. Preferably, the low-resistivity member is located directly below the contact region in the thickness direction of the substrate.

Therefore, the low-resistivity component is covered by the high-resistivity component, and foreign matters such as ink and the like cannot directly short-circuit the two low-resistivity components, so that the high-resistivity component is connected between the inks, and the two functional pins of the electronic module are prevented from being directly short-circuited.

Further, the edge of the high resistivity component is provided with a test area. Further, the test area comprises at least one test point; and/or the test region surrounds the high resistivity component in a semi-surrounding manner in the circumferential direction.

In this way, the resistance between the edge of the high-resistivity component and the low-resistivity component can be detected through the test area, and the resistance of the high-resistivity component can be conveniently adjusted.

In order to achieve the second object, the ink cartridge provided by the invention is detachably mounted to an ink jet printing device, the ink cartridge is provided with a cartridge body, a cavity is formed in the cartridge body, ink is contained in the cavity, and an ink outlet is arranged below the cavity; the ink box chip is arranged on the outer wall of the box body.

In order to achieve the third object, the ink jet printing device provided by the invention comprises a machine body, wherein a main control circuit board and a printing carriage are arranged in the machine body, a needle touching frame is arranged on the printing carriage, a contact pin is arranged on the printing carriage needle touching frame, and one or more ink cartridges are arranged in the ink jet printing device.

Drawings

Fig. 1 is a structural view of a conventional ink jet printing apparatus.

Fig. 2 is a structural view of a conventional ink cartridge.

Fig. 3 is a structural diagram of a conventional ink cartridge chip.

Fig. 4 is a structural view of a first embodiment of the ink cartridge chip of the present invention and a stylus of an inkjet printing apparatus.

Fig. 5 is a block diagram of a first view of a first embodiment of a cartridge chip of the present invention.

Fig. 6 is a block diagram of a second view of the first embodiment of the ink cartridge chip of the present invention.

Fig. 7 is a block diagram of a third view of the first embodiment of the ink cartridge chip of the present invention.

Fig. 8 is a partial cross-sectional view of a first embodiment of the ink cartridge chip of the present invention.

Fig. 9 is a power circuit diagram of a first embodiment of the ink cartridge chip of the present invention.

Fig. 10 is a structural view of a second embodiment of the ink cartridge chip of the present invention and a stylus of an inkjet printing apparatus.

Fig. 11 is a structural view of a second embodiment of the ink cartridge chip of the present invention.

Fig. 12 is an exploded view of a second embodiment of the ink cartridge chip of the present invention.

Fig. 13 is a partial cross-sectional view of a second embodiment of the ink cartridge chip of the present invention.

Fig. 14 is a structural view of a third embodiment of the ink cartridge chip of the present invention and a stylus of an inkjet printing apparatus.

Fig. 15 is a block diagram of a third embodiment of the ink cartridge chip of the present invention.

Fig. 16 is an exploded view of a third embodiment of the cartridge chip of the present invention.

The invention is further described below with reference to the drawings and examples.

Detailed Description

First embodiment:

the inkjet printing device of this embodiment is provided with the organism, is formed with the printing carriage in the organism, and ink horn detachable installs in the printing carriage, and every ink horn has a box body, and the box body encloses into a cavity that holds ink, is equipped with the play ink outlet with the cavity intercommunication in the below of cavity, and the interior ink of cavity accessible goes out the ink outlet and flows into in the shower nozzle of inkjet printing device, detachably installs the ink horn chip on the ink horn front wall.

The ink jet printing device comprises a main control circuit board, an ink box, a plurality of contact pins, a plurality of ink boxes, a contact pin frame, a plurality of contact pins and a plurality of ink boxes, wherein the contact pin frame is arranged on a print carriage of the ink jet printing device, the main control circuit board and the ink boxes are respectively arranged on two sides of the contact pin frame, and the contact pin frame is provided with the plurality of contact pins. Referring to fig. 4, the cartridge chip of the present embodiment has a substrate 110, and a plurality of connection terminals including a data terminal 121, a chip select terminal 122, a clock terminal 123, a power terminal 124, and a ground terminal 130 are provided on a first surface of the substrate 110, referring to fig. 5. Wherein the first surface is a surface facing the stylus holder, and thus, the plurality of connection terminals are each in contact with the contact pins 115 on the stylus holder of the inkjet printing apparatus. The plurality of connection terminals have conductive capability, and the contact pins 115 are made of conductive metal, so that signals transmitted from the inkjet printing apparatus can be transmitted to the electronic module of the chip through the contact pins 115 and the connection terminals.

Referring to fig. 6, an electronic module 111 is disposed on a second surface of the substrate 110, that is, a surface opposite to the first surface, and the electronic module 111 may be provided with a processor and a memory, where the processor may be a single chip microcomputer, or a control unit with a computing capability such as an ASIC, and the memory may be a nonvolatile memory, such as a FLASH or EEPROM. The connection terminals are electrically connected to the electronic module, for example, electrical connection wires are provided on the substrate 110 to electrically connect the connection terminals to the electronic module. For example, the electronic module 111 has a plurality of functional pins, each of which is electrically connected to one of the connection terminals, for example, the plurality of functional pins includes a clock pin, and the clock pin is electrically connected to the clock terminal 123.

In the present embodiment, the data terminal 121, the chip select terminal 122, the clock terminal 123, and the power supply terminal 124 each include a high-resistivity member and a low-resistivity member, and each contact area is located on the low-resistivity member, the contact area being an area for electrical contact with a stylus on the inkjet printing apparatus. The distance between the ground terminal 130 and the other four terminals is relatively large, and the ground terminal 130 is formed by using a conventional gold finger, that is, the ground terminal 130 is formed by plating gold salt onto the copper foil by using a gold plating process.

The structure of the terminal will be described below taking the data terminal 121 as an example. Referring to fig. 5, 7 and 8, the data terminal 121 has one low resistivity part 141, the contact area is a part of the area on the low resistivity part 141, the contact pin 115 abuts on a part of the area of the low resistivity part 141 when the ink cartridge is mounted to the ink jet printing apparatus, and the low resistivity part 141 is electrically connected with the functional pin of the electronic module 111. It should be noted that the electrical connection referred to herein means that the resistance between the entire low resistivity component 141 and the corresponding functional pin of the electronic module 111 is small, for example, less than 1Ω. The low-resistivity member 141 may be a metal film and constitute a second film of the present embodiment, which is formed on the substrate 110 by depositing gold, for example, by the same process as the ground terminal 130, so that the resistance of the second film is small, for example, the resistance at room temperature is less than 2.0x10 ^-7 omega.M material. In this way, the signals sent by the inkjet printing apparatus are transmitted to the corresponding functional pins of the electronic module 111 after passing through the low-resistivity component 141, and the low-resistivity component 141 does not greatly weaken the signals due to excessive resistance, thereby ensuring smooth communication between the inkjet printing apparatus and the electronic module 111.

As can be seen from fig. 7, the high-resistivity member 142 is provided on the outer periphery of the low-resistivity member 141, the area of the high-resistivity member 142 is larger than the area of the low-resistivity member 141, and the high-resistivity member 142 has a room-temperature resistivity of 1.0x10 or higher ^-6 The first thin film of Ω.m is preferably a carbon film, an alloy film, or a thin film of an organic material doped with metal powder, so that the resistivity of the first thin film is much greater than that of the second thin film, and thus the resistance between the edge of the high-resistivity part 142 and the low-resistivity part 141 is much greater than that between the low-resistivity part 141 and the functional pins of the electronic module.

Referring to fig. 7, the low-resistivity component 141 of the present embodiment is rectangular, and the data terminal 121 is also rectangular, and the high-resistivity component 142 is located around the low-resistivity component 141, so that the high-resistivity component 142 has a hollow "back" shape. Preferably, the distances from the outer edge of the low resistivity member 141 to the outer edge of the high resistivity member 142 are all equal in the four directions of up, down, left, and right of the low resistivity member 141, and the minimum distance from the outer edge of the low resistivity member 141 to the outer edge of the high resistivity member 142 is L1, the distance L1 is much greater than the thickness of the low resistivity member 141, and preferably, the distance L1 is 10 times or more the thickness of the low resistivity member 141. In addition, the low-resistivity member 141 and the high-resistivity member 142 are adjacent to each other and electrically connected to each other.

Referring to fig. 8, the thickness of the low-resistivity member 141 is smaller, and the thickness of the high-resistivity member 142 is larger, and it is preferable that the thickness of the high-resistivity member 142 is two or more times the thickness of the low-resistivity member 141. Preferably, the electrical resistance between the edge of the high resistivity component 142 and the low resistivity component 141 is much greater than the electrical resistance between the contact area and the corresponding functional pin of the electronic module 111. In this way, signal interference between functional pins caused by ink dripping between two adjacent high resistivity components 142 can be avoided.

For example, if a foreign matter such as ink drops on the cartridge chip, if ink is present between the power supply terminal 124 and the chip select terminal 122, the edges of the power supply terminal 124 and the chip select terminal 122 may be connected by ink, and at this time, the high-resistivity member of the power supply terminal 124, the ink, and the high-resistivity member of the chip select terminal 122 are electrically connected in this order. Referring to fig. 9, since the resistance of the high-resistivity part is large, the high-resistivity part of the power terminal 124 corresponds to the resistance R2 in fig. 9, the high-resistivity part of the chip select terminal 122 corresponds to the resistance R4 in fig. 9, and the low-resistivity part of the power terminal 124 corresponds to the resistance R1, and the low-resistivity part of the chip select terminal 122 corresponds to the resistance R3. If ink drops between the power supply terminal 124 and the CHIP select terminal 122, the power supply pins vcc_chip and the CHIP select pins cs_chip of the electronic module are sequentially connected through the resistors R1, R2, R4, and R3, and the high-level signals on the power supply pins cs_chip are pulled down to be low-level signals on the CHIP select pins cs_chip due to the fact that the resistance values of the resistors R2 and R4 are larger, and the resistance values of the resistors R1 and R3 are smaller, when the CHIP select pin cs_chip receives low-level signals from the CHIP select terminal cs_cp_pr of the ink jet printing device through the resistor R3, and the power supply pins vcc_chip are always high-level, the resistors R2 and the resistor R4 have the function of pulling down the resistors, and although the CHIP select pins cs_chip and the CHIP select terminal cs_cp_pr of the ink jet printing device are required to bear certain backward currents, so that the signals on the CHIP select pins cs_chip of the electronic module are not interfered by the CHIP signals of the CHIP select pins cs_chip of the electronic module, and the electronic module can still be communicated with the ink jet printing device 111.

In addition, the signal output by the power supply terminal vcc_cp_pr of the inkjet printing apparatus is transmitted to the power supply terminal vcc_chip of the electronic module only through the low-resistivity component, since the power supply terminal vcc_cp_pr of the inkjet printing apparatus and the power supply terminal vcc_chip of the electronic module only have the resistor R1, since the resistance value of the resistor R1 is small, as described above, the resistor may be less than 1Ω, and the signal transmission between the power supply terminal vcc_cp_pr of the inkjet printing apparatus and the power supply terminal vcc_chip of the electronic module is not affected.

It can be seen that even if foreign matter drips between two adjacent high-resistivity components, signals between two adjacent functional pins do not interfere with each other due to the high-resistivity component 142. The stylus 115 of the ink jet printing device does not contact the high resistivity member 142, and data transmission between the ink jet printing device and the electronic module 111 can be normally performed. Even if the contact portion of the stylus 115 of the inkjet printing apparatus exceeds the edge range of the low-resistivity member, it is generally not too far from the edge of the low-resistivity member, and the equivalent resistance value thereof is not so large as to affect the data transmission.

Second embodiment:

referring to fig. 10 and 11, the cartridge chip of the present embodiment has a substrate 210, and a plurality of connection terminals are disposed on the substrate 210, wherein the plurality of connection terminals include a data terminal 221, a chip select terminal 222, a clock terminal 223, a power supply terminal 224, and a ground terminal 230. Wherein the first surface is a surface facing the stylus holder, and therefore, the plurality of connection terminals are each in contact with the contact pins 215 on the stylus holder of the inkjet printing apparatus. The plurality of connection terminals have conductive capability, and the contact pins 215 are made of conductive metal, so that signals transmitted from the inkjet printing apparatus can be transmitted to the electronic module of the chip through the contact pins 215 and the connection terminals. The electronic module is disposed on the second surface of the substrate 210.

Referring to fig. 11, the data terminal 221, the chip select terminal 222, the clock terminal 223, and the power supply terminal 224 of the present embodiment are each covered on the surface by the high-resistivity members 242, and each of the high-resistivity members 242 has a contact area, which is an area for electrical contact with a stylus on the inkjet printing apparatus. Referring to fig. 12, each terminal includes a low-resistivity part 241 and a high-resistivity part 242, in this embodiment, the low-resistivity part 241 is a second thin film formed on the surface of the substrate, and the second thin film is formed on the substrate 210 by depositing gold, so that the resistance of the second thin film is small, for example, the resistivity is less than 2.0x10 from room temperature ^-7 omega.M material.

The high-resistivity member 242 covers the low-resistivity member 241, and the area of the high-resistivity member 242 is larger than that of the low-resistivity member 241, so the high-resistivity member 242 completely covers the low-resistivity member 241. As in the first embodiment, the high-resistivity member 242 is formed by using a material having a resistivity at room temperature of more than 1.0X10 ^-6 The first film of Ω.m.

Unlike the first embodiment, the contact region of the present embodiment is a partial region of the high-resistivity member 242 that is covered directly above the low-resistivity member 241, and therefore, in the thickness direction of the substrate, the low-resistivity member 241 is located directly below the contact region. And, the contact region is electrically connected to the low-resistivity member 241 through the high-resistivity member 242 overlaid on the low-resistivity member 241.

Thus, the signals transmitted from the contact pins 215 are transmitted to the functional pins of the electronic module via the high-resistivity part 242 and the low-resistivity part 241. In contrast to the first embodiment, the high-resistivity member 242 is covered over the low-resistivity member 241, so that, although the electrical resistance between the functional pins of the electronic module and the contact pins of the ink jet printing apparatus is increased, the increased electrical resistance is not substantially affected by the small thickness of the high-resistivity member 242 covered over the low-resistivity member 241. And, because the surface of terminal is covered by the second film entirely, the second film surface is smooth more easily lets the foreign matter drop.

In addition, the edge of the high-resistivity member 242 is provided with a test region, and for example, one test terminal 243 is also connected to at least one of the data terminal 321, the chip select terminal 322, the clock terminal 323, and the power supply terminal 324, and the test terminal 243 is the test region of the present embodiment. The test terminal 243 is also formed on the substrate 210 by depositing gold, and thus the test terminal 243 is also formed of a metal film. Test terminals 243 are connected to edges of the corresponding high resistivity component 242. The test terminal 243 is used to test the resistance between the edge of the high-resistivity component 242 and the contact portion, thereby ensuring that the resistance value of the high-resistivity component 242 is large enough to avoid signal interference when two adjacent high-resistivity components 242 are shorted.

Third embodiment:

referring to fig. 13 and 14, the cartridge chip of the present embodiment has a substrate 310, and a plurality of connection terminals are disposed on the substrate 310, and the plurality of connection terminals include a data terminal 321, a chip select terminal 322, a clock terminal 323, a power terminal 324, and a ground terminal 330. Wherein the first surface is a surface facing the stylus holder, and thus, the plurality of connection terminals are each in contact with the contact pins 315 on the stylus holder of the inkjet printing apparatus. The plurality of connection terminals have conductive capability, and the contact pins 315 are made of conductive metal, so that signals transmitted from the inkjet printing apparatus can be transmitted to the electronic module of the chip through the contact pins 315 and the connection terminals. The electronic module is disposed on the second surface of the substrate 310.

The data terminal 321, the chip select terminal 322, the clock terminal 323, and the power supply terminal 324 of the present embodiment each have a contact area, which is a portion in contact with the contact pin 315, the contact area being located in a center portion of the terminal. Taking the data terminal 321 as an example, referring to fig. 15, each of the data terminal 321, the chip select terminal 322, the clock terminal 323, and the power supply terminal 324 includes a low-resistivity member 341 and a high-resistivity member 342, and in this embodiment, the low-resistivity member 341 is a second thin film formed on the surface of the substrateA film, a second film is formed on the substrate 310 by depositing gold, so that the resistance of the second film is small, for example, the resistivity at room temperature is less than 2.0X10 ^-7 omega.M material.

The high-resistivity member 342 is overlaid on the low-resistivity member 341, and the area of the high-resistivity member 342 is larger than the area of the low-resistivity member 341, so the high-resistivity member 342 completely overlays the low-resistivity member 341. As in the first embodiment, the high-resistivity member 342 is formed by using a material having a resistivity at room temperature of more than 1.0X10 ^-6 The first film of Ω.m.

The contact region of the present embodiment is a partial region of the high-resistivity member 342 covered directly above the low-resistivity member 341. The signals transmitted by the contact pins 315 are transmitted to the functional pins of the electronic module via the high-resistivity component 342 and the low-resistivity component 341.

The test area of the present embodiment is increased as compared to the second embodiment, and the test area further includes a third thin film 344 located at a portion of the outer circumference of the high resistivity member 342, preferably made of the same material as the first thin film, and formed on the substrate 310 using a gold plating method. Since the high-resistivity member 342 has a rectangular outer contour, the third thin film 344 is formed outside at least two edges of the high-resistivity member 342 to form an "L" -shaped structure, that is, to be arranged around the high-resistivity member 342 in a semi-surrounding manner. In addition, the test area further includes a test terminal 343, the test terminal 343 is also formed on the substrate 310 by depositing gold, and preferably, the test terminal 343 is adjacent to and integrally formed with the third film 344.

The third thin film 344 is disposed at the outer side of the high resistivity part 342, so that the third thin film 344 of two terminals is first short-circuited when ink drops between the adjacent two terminals, and signal isolation is performed by the high resistivity part of each terminal, so as to avoid signal interference between the adjacent two terminals.

In addition, the third film 344 is provided, and the resistance between the edge of the high-resistivity component 342 and the contact portion or between the high-resistivity component 342 and the low-resistivity component 341 can be tested by the third film 344, and if the resistance value of the high-resistivity component 342 is found to be unsuitable, the resistance value of the portion outside the contact portion can be changed by adjusting the formulation of the high-resistivity component 342, so that the condition that signals of two adjacent terminals are interfered during short circuit can be better avoided.

In the above embodiments, the data terminal, the chip select terminal, the clock terminal, and the power terminal each comprise a first film and a second film, and in other embodiments, it is within the scope of the present invention that only one or more adjacent terminals have a first resistivity component and a second resistivity component.

The above is only a specific embodiment of the present application, but the scope of the present application is not limited thereto, and the above is only an embodiment adopted for the purpose of facilitating understanding of the present invention, and is not intended to limit the present invention. It is understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the present application shall be subject to the scope defined by the claims.

Claims

1. The ink box chip comprises a substrate and an electronic module, wherein the electronic module comprises a plurality of functional pins, a plurality of connecting terminals are arranged on the first surface of the substrate, and each connecting terminal comprises a contact area electrically contacted with a contact pin on the printing equipment;

the method is characterized in that:

at least one of the connection terminals includes a low-resistivity component including or electrically connected to the contact region and a high-resistivity component; the low resistivity component is electrically connected to the functional pin, and a resistance between the high resistivity component edge and the low resistivity component is greater than a resistance between the contact region and the functional pin.

2. The cartridge chip of claim 1, wherein:

the saidThe high-resistivity component has a room temperature resistivity of greater than 1.0X10 ^-6 A first film of Ω.m; the low-resistivity part has a resistivity of less than 2.0X10 at room temperature ^-7 And a second film of omega.M.

3. The cartridge chip of claim 2, wherein:

4. A cartridge chip according to any one of claims 1 to 3, wherein:

the contact region is a partial region of the low-resistivity member, and the high-resistivity member is formed on an outer periphery of the low-resistivity member.

5. A cartridge chip according to any one of claims 1 to 3, wherein:

the contact region is a portion of the region of the high resistivity component overlying the low resistivity component.

6. The cartridge chip of claim 5, wherein:

the low-resistivity member is located directly below the contact region in a thickness direction of the substrate.

7. A cartridge chip according to any one of claims 1 to 3, wherein:

the edge of the high resistivity component is provided with a test area.

8. The cartridge chip of claim 7, wherein:

the test area comprises at least one test point; and/or

The test region surrounds the high-resistivity component in a semi-surrounding manner in the circumferential direction.

9. An ink cartridge detachably mountable to an inkjet printing apparatus, the ink cartridge comprising:

the ink box comprises a box body, wherein a cavity is formed in the box body, ink is contained in the cavity, and an ink outlet is formed below the cavity;

the method is characterized in that:

an ink cartridge chip as claimed in any one of claims 1 to 8 is provided on an outer wall of the cartridge body.

10. The inkjet printing device comprises a machine body, a main control circuit board and a printing carriage are arranged in the machine body, a needle touching frame is arranged on the printing carriage, and a contact needle is arranged on the printing carriage, and the inkjet printing device is characterized in that:

the ink jet printing apparatus having one or more ink cartridges according to claim 9 mounted therein.