An inkjet recording head and an inkjet recording apparatus

Abstract

The application discloses an ink-jet recording head and an ink-jet recording device, which have ink discharge ports and elements for generating ink discharge energy; independent detection chips, including independent detection chip one, independent detection chip two and independent detection chip three, collect conduction states and voltage signals, judge the overall connection reliability, and output abnormal notification signals when contact is abnormal; three independent detection chips are arranged to correspond to three groups of differentiated integrated schemes, the specialization and precision of the contact detection function are realized, the detection reliability and system stability are effectively improved, each detection chip is responsible for signal collection, operation judgment and nozzle start-stop control of the corresponding scheme, and is directly electrically connected with the connection terminal array, does not forward the detection signal through the nozzle chip, avoids mutual interference between the detection circuit and the ink driving circuit, meanwhile, the detection terminal adopts a layout design of a rectangular array center plus an angle part, is fully covered, and can quickly identify contact failure, circuit failure and other abnormalities.

Description

Technical Field

[0001] This invention relates to the field of printing technology, specifically to an inkjet recording head and an inkjet recording device. Background Technology

[0002] Inkjet recording devices are widely used in printers and other equipment due to their advantages such as high speed, low noise, and low cost. To ensure print quality and equipment safety, a stable and reliable electrical connection must be established between the recording head and the main body of the device.

[0003] The prior art (CN1850512A) discloses a contact detection scheme: corner terminals are selected as detection points in the recording head connection terminals, and a detection circuit is integrated inside the printhead chip to determine the reliability of the overall connection by detecting the contact state of the corner terminals. This scheme has the following drawbacks: the built-in detection logic in the printhead chip increases the difficulty of chip design, manufacturing cost, and failure risk; corner detection points cannot accurately reflect the contact state of the middle area of ​​the terminal array under installation deviations such as tilting or offset; the detection circuit is fixed inside the printhead chip, making it difficult to flexibly modify the detection strategy and adapt to different models; the detection circuit and the drive circuit share the same chip, which is prone to signal interference and affects detection accuracy.

[0004] Therefore, the industry urgently needs a contact detection solution that simplifies the nozzle chip structure, optimizes the layout of detection points, features an independently external detection circuit, and offers higher stability. Summary of the Invention

[0005] The purpose of this invention is to provide an inkjet recording head and an inkjet recording device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an inkjet recording head, comprising a printhead chip, having an ink discharge outlet, and an element for generating ink discharge energy;

[0007] The independent detection chip, including independent detection chip one, independent detection chip two and independent detection chip three, collects the conduction status and voltage signal, judges the overall connection reliability, and outputs an abnormality alarm signal when there is an abnormal contact.

[0008] The contact array PCB and the independent circuit patch are provided with multiple connection terminals inside, which are used to contact the device-side terminals when installed in the inkjet recording device to achieve electrical connection;

[0009] Multiple connection terminals are arranged in a planar area, and at least three connection terminals located in the middle and two corners of the planar area are used as contact detection terminals.

[0010] Preferably, the independent detection chip one is installed inside the contact array PCB, and the independent detection chip three is installed on one side of the independent circuit patch, and the independent circuit patch is installed on one side of the contact array PCB.

[0011] Preferably, the connecting terminals are arranged within a rectangular planar area, with the middle position being near the geometric center of the area, and the two corner positions being any two of the four corners of the area.

[0012] Preferably, the contact detection terminals transmit different types of signals, including at least two of the following: drive control signals, temperature sensor signals, logic power signals, and independent contact detection signals.

[0013] Preferably, the printhead chip only includes a drive circuit, a temperature sensing unit, and a signal interface unit, and does not have contact detection logic, calculation, and output functions. The element that generates ink discharge energy is an electrothermal conversion element, and ink droplet discharge is achieved through film boiling. The detection terminals in the connection terminal array transmit drive control signals including HE heating control signal and CLK clock signal. The logic power supply signal is VDD. The independent contact detection signals include CKIN1 and CKIN2 input signals and CKOUT abnormal notification signal.

[0014] Preferably, the detection logic of the independent detection chip one, independent detection chip two, and independent detection chip three is consistent: when the logic power supply (VDD) is normally supplied, the CKOUT signal output by each detection chip is the NOT operation of the logical AND operation result of the corresponding detection terminal CKIN1 and CKIN2 signals, that is, CKOUT = (CKIN1 & CKIN2). When the logic power supply is not provided or the power supply is abnormal, the CKOUT signal of each detection chip will output a low level by default.

[0015] An inkjet recording device includes an integral ink cartridge and an inkjet recording head. Ink supply lines are provided on both sides of the integral ink cartridge, and flexible circuit boards are provided on both sides of the integral ink cartridge. A contact array PCB is mounted on one side of the integral ink cartridge, and mounting and positioning supports are provided on both sides of the integral ink cartridge. The printhead chip is mounted on the bottom of the contact array PCB.

[0016] Preferably, the second independent detection chip is installed on one side of the overall ink cartridge, and a mounting and positioning clip is provided on one side of the contact array PCB, and the independent circuit patch is installed on one side of the contact array PCB through the mounting and positioning clip.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: by setting three independent detection chips corresponding to three sets of differentiated integration schemes, the contact detection function is made more specialized and precise, effectively improving the detection reliability and system stability. Each detection chip is specifically responsible for signal acquisition, calculation and judgment and printhead start-stop control of the corresponding scheme, and all are directly electrically connected to the connection terminal array without forwarding the detection signal through the printhead chip, thus avoiding mutual interference between the detection circuit and the inkjet drive circuit. At the same time, the detection terminals adopt a rectangular array layout design with the center and corners, which provides comprehensive coverage. With the help of anti-shake processing and multiple detection verification mechanisms, abnormalities such as poor contact and circuit failure can be quickly identified, and the shutdown protection can be triggered in time to prevent printhead chip damage and extend the service life of the equipment. At the same time, the printhead chip design is simplified, and the research and development and manufacturing costs are reduced.

[0018] The other three integrated solutions are independently selectable and do not interfere with each other, adapting to different installation spaces and usage requirements, improving the versatility and flexibility of the device. Solution 1 adopts a single PCB board integrated design, which is compact in structure and easy to assemble, reducing the number of parts and assembly costs. Solutions 2 and 3 use independent circuit surface mount to carry the detection chip. Solution 2 is attached to the ink cartridge contacts to transmit signals, while Solution 3 is installed independently and connected by wires. Both are convenient for later upgrades of detection chip models and algorithms, and can be maintained and replaced separately, reducing maintenance costs. In addition, all solutions follow a unified detection logic to ensure the consistency of detection functions. The cooperation between the flexible circuit board and the mounting and positioning structure further improves the component installation accuracy and signal transmission stability, taking into account both practicality and maintainability. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of Scheme 1 of the present invention.

[0020] Figure 2 This is a three-dimensional structural diagram of Scheme 2 of the present invention.

[0021] Figure 3 This is a three-dimensional structural diagram of Scheme 3 of the present invention.

[0022] Figure 4 This is a schematic diagram of the independent detection chip of the present invention.

[0023] Figure 5 This is a schematic diagram of the contact detection process of the detection circuit of the present invention.

[0024] In the diagram: 1. Ink cartridge; 2. Ink supply line; 3. Flexible circuit board; 4. Contact array PCB; 5. Mounting and positioning support; 6. Printhead chip; 701. Independent detection chip one; 702. Independent detection chip two; 703. Independent detection chip three; 8. Mounting and positioning clip; 9. Independent circuit patch. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figures 1-5 The present invention provides a technical solution: an inkjet recording head, including a printhead chip 6, having an ink discharge outlet, and an element for generating ink discharge energy;

[0027] Independent detection chips, including independent detection chip 1 701, independent detection chip 2 702 and independent detection chip 3 703, collect conduction status and voltage signals, determine the overall connection reliability, and output an abnormality alarm signal when there is an abnormal contact.

[0028] The contact array PCB4 and the independent circuit patch 9 are both provided with multiple connection terminals inside, which are used to contact the device-side terminals when installed in the inkjet recording device to achieve electrical connection.

[0029] Multiple connection terminals are arranged in a planar area, and at least three connection terminals located in the middle and two corners of the planar area are used as contact detection terminals.

[0030] Preferably, the independent detection chip 701 is installed inside the contact array PCB4, and the independent detection chip 703 is installed on one side of the independent circuit patch 9. The independent circuit patch 9 is also installed on one side of the contact array PCB4. The connection terminals are arranged within a rectangular planar area, with the middle position near the geometric center of the area. The two corner positions are any two of the four corners of the rectangular planar area. The contact detection terminals transmit different types of signals, including at least two of the following: drive control signals, temperature sensor signals, logic power signals, and independent contact detection signals. The nozzle chip only includes a drive circuit, a temperature sensing unit, and a signal interface unit, and does not possess contact detection logic. It has calculation and output functions, and the element that generates ink discharge energy is an electrothermal conversion element. Ink droplet discharge is achieved through membrane boiling. It is connected to the detection terminals in the terminal array. The transmitted drive control signals include HE heating control signal and CLK clock signal. The logic power supply signal is VDD. The independent contact detection signals include CKIN1 and CKIN2 input signals and CKOUT abnormal notification signal. The detection logic of independent detection chip 1 701, independent detection chip 2 702 and independent detection chip 3 703 is consistent: when the logic power supply VDD is normally supplied, the CKOUT signal output by each detection chip is the NOT operation of the logical AND operation result of the corresponding detection terminal CKIN1 and CKIN2 signals, that is, CKOUT = (CKIN1 & When the logic power supply is not provided or the power supply is abnormal (CKIN2), the CKOUT signal of each detection chip will output a low level by default. Two contact detection terminals are set at the geometric center of the rectangular terminal array. The terminals at the geometric center are in an area with relatively balanced contact pressure throughout the array, and are also one of the key locations most prone to poor contact. Setting detection terminals here allows for quick detection of contact abnormalities in the middle area of ​​the terminal array, avoiding signal transmission instability caused by poor contact in the middle area. This adapts to the signal acquisition requirements of all solutions corresponding to the three detection chips. Two corners are randomly selected from the four corners of the rectangular terminal array, and one contact detection terminal is set at each corner, for a total of two. The corner terminals are where the force is relatively concentrated in the terminal array. The area in the middle is also the area most prone to wear and poor contact during insertion and removal. Selecting two diagonally opposite or adjacent corner terminals as detection terminals can cover the edge area of ​​the terminal array, complementing the detection terminals in the center position, and achieving comprehensive coverage of the contact status of the entire terminal array. This ensures that the solutions corresponding to the three detection chips can accurately detect contact abnormalities. Drive control signals, such as HE, CLK and other control signals necessary for the operation of the nozzle, are transmitted to the CKIN1 and CKIN2 pins of the corresponding independent detection chips 701, 702 and 703. The corresponding detection chips can determine whether the terminal contact is good by detecting the conduction status and voltage amplitude of these signals.Independent contact detection terminals: Terminals specifically designed for contact detection, such as independently configured CKIN1 and CKIN2 terminals. These terminals do not transmit signals related to nozzle operation; they are only used to transmit test and feedback signals for contact detection. This avoids interference from other signals with the detection results, improves detection accuracy, and adapts to the independent detection requirements of all solutions corresponding to the three detection chips. Logic power supply VDD or ground GND signals: These signals are fundamental to the normal operation of the three independent detection chips (701, 702, and 703), the corresponding circuit carrier component contact array PCB4, the independent circuit patch 9, and the nozzle chip 6. By detecting the conduction status and voltage stability of the logic power supply or ground signals, the reliability of terminal contact can be determined. It also indirectly reflects the power supply status of each component, preventing component damage due to poor power supply contact. This adapts to the power supply requirements of all solutions corresponding to the three detection chips.

[0031] The working principle of the above technical solution: The ink cartridge 1 in Figure 1 is a dedicated integrated solution for the independent detection chip 701 in Solution 1. The core is "single PCB board integration, functional area layout". The printhead chip 6, the independent detection chip 701, and the supporting circuitry are all integrated on the same contact array PCB4. The contact array PCB4 serves as the circuit carrier and mounting foundation for the independent detection chip 701, realizing the electrical connection and fixation of each component. Specific details are as follows: The contact array PCB4 is divided into clearly defined functional areas. The printhead functional area is dedicated to installing the printhead chip 6, and only inkjet driving and temperature detection related circuits are arranged, without involving any contact detection circuits. The detection functional area is dedicated to installing the independent detection chip 701, and integrates its supporting signal acquisition, calculation and judgment, and interface transmission circuits. The two functional areas are wired independently to avoid mutual interference. This design shortens the signal transmission path of the independent detection chip 701, improving detection response speed. Connection method: The independent detection chip 701 is directly electrically connected to the contact array PCB4 via wiring on the PCB board, eliminating the need for additional adapter structures. The contact array PCB4 serves as the dedicated carrier for the independent detection chip 701, eliminating the need for separate circuit carriers, simplifying the overall structure, and ensuring stable signal transmission between the independent detection chip 701 and the contact array PCB4. Advantages and suitable scenarios: Most compact structure, reducing the number of parts, lowering assembly difficulty and manufacturing costs; short signal transmission path, strong anti-interference capability, and high detection stability of the independent detection chip 701; suitable for inkjet recording heads with high volume requirements and limited assembly space, eliminating the need for additional independent carrier installation positions, and facilitating later overall maintenance.

[0032] The ink supply circuit 2 shown in the image is a dedicated integration solution for the independent detection chip 703 in Scheme 2. The core concept is "independent surface mount support and contact bonding transmission." The independent detection chip 703 is integrated onto an independent circuit surface mount 9. This surface mount 9 serves as the dedicated circuit support and mounting base for the independent detection chip 703, directly bonding to the contact array PCB4 as an independent component to achieve direct signal transmission. Specific details are as follows: Structural Design: The independent circuit surface mount 9 adopts a thin and light design, internally integrating the independent detection chip 703 and its associated signal acquisition, transmission, and processing circuits. One side of the surface mount has contact pins corresponding to the contact array PCB4, while the other side has a reserved connection interface for the device. Its compact size allows it to fit within the ink cartridge installation space, while providing stable circuit support and a mounting base for the independent detection chip 703. Bonding Method: Independent circuit... The patch 9 is tightly bonded to the contact array PCB4 via a bonding process, ensuring complete conductivity between the contact pins on the patch and the contact array PCB4 without the need for additional wire connections. The independent detection chip 703 connects to the bonding pins through the internal wiring of the independent circuit patch 9, enabling signal acquisition from the contact array PCB4 and ensuring timely and accurate signal transmission. Advantages and suitable scenarios: The independent circuit patch 9 can be designed and manufactured independently, facilitating upgrades to the model and algorithm of the independent detection chip 703 according to detection needs without modifying the overall structure of the printhead chip 6 and the ink cartridge; the bonding method requires no additional wiring, making assembly convenient, and the signal transmission is direct, reducing interference; it is suitable for scenarios where the ink cartridge contact layout is relatively concentrated and flexible upgrades to detection functions are required; during later maintenance, the independent circuit patch 9 and the independent detection chip 703 can be replaced separately, reducing maintenance costs.

[0033] Figure 3 shows the dedicated integration solution for the independent detection chip 702 in Scheme 3. The core principle is "independent surface mount and independent installation, with wire connection for transmission." The independent detection chip 702 is integrated onto the overall ink cartridge 1. The overall ink cartridge 1 serves as the dedicated circuit carrier and mounting base for the independent detection chip 702. It is installed as an independent component in the reserved mounting position on the inkjet head, independent of the contact array PCB4. Electrical connection to the contact array PCB4 is achieved via wires. Specific details are as follows: Structural Design: The mounting position is independent of the contact array PCB4. A dedicated surface mount slot is reserved inside the inkjet head to secure the independent detection chip 702, ensuring a firm and secure installation. This also provides stable circuit support and a mounting base for the independent detection chip 702. Connection Method: The independent detection chip 702 and the contact array PCB4 are connected... The dot array PCB4s are connected by flexible or rigid wires. The two ends of the wires are connected to the signal interface of the independent detection chip 702 and the detection terminals of the contact array PCB4, respectively, ensuring stable signal transmission. The independent detection chip 702, through internal wiring, connects to the wires to acquire, process, and provide feedback on the signals from the contact array PCB4, ensuring reliable detection functionality. Advantages and suitable scenarios: The independent detection chip 702 can be installed in a flexible location, avoiding the installation area of ​​the contact array PCB4, making it suitable for scenarios with complex ink cartridge contact layouts and limited space; independent installation reduces wear on the independent detection chip 702 during ink cartridge insertion and removal, extending its service life; the independent detection chip 702 can be disassembled and replaced separately in the future, making maintenance convenient and not affecting the normal operation of the contact array PCB4.

[0034] An inkjet recording device includes an integral ink cartridge 1 and an inkjet recording head. Ink supply lines 2 are provided on both sides of the integral ink cartridge 1. Flexible circuit boards 3 are provided on both sides of the integral ink cartridge 1. A contact array PCB 4 is installed on one side of the integral ink cartridge 1. Mounting and positioning supports 5 are provided on both sides of the integral ink cartridge 1. A printhead chip 6 is installed at the bottom of the contact array PCB 4. An independent detection chip 702 is installed on one side of the integral ink cartridge 1. A mounting and positioning clip 8 is provided on one side of the contact array PCB 4, and an independent circuit patch 9 is mounted on one side of the contact array PCB 4 through the mounting and positioning clip 8.

[0035] The integrated ink cartridge 1, as the core ink supply component of the device, undertakes the core functions of storing ink and continuously supplying qualified ink to the inkjet recording head, which is the fundamental guarantee for the normal operation of the entire inkjet recording device. The ink supply lines 2, symmetrically arranged on both sides of the integrated ink cartridge 1, mainly function to achieve stable ink transmission, accurately and uniformly delivering the ink stored inside the integrated ink cartridge 1 to the printhead chip 6 of the inkjet recording head, while preventing ink leakage and ink interruption, ensuring the continuity of the inkjet process. Flexible circuit boards 3, located on both sides of the integrated ink cartridge 1, serve as carriers for signal transmission and circuit connections, enabling... The device control unit communicates with various electrical components, transmitting key commands such as drive control signals and detection signals. It also provides stable circuit paths for related components, ensuring the stability of power supply and signal transmission. Its flexibility allows it to adapt to the overall structural layout, preventing damage from pulling on the wiring. The contact array PCB 4, mounted on one side of the overall ink cartridge 1, is the core circuit integration and signal interaction carrier of the device. Its main functions include two aspects: first, providing a stable mounting base for the printhead chip 6, ensuring the installation accuracy of the printhead chip 6 and guaranteeing the accuracy of inkjet positioning; second, integrating the contact array structure to realize circuit connection and signal relay between components such as the printhead chip 6 and the flexible circuit board 3, streamlining the signal transmission path, avoiding signal interference, and improving the stability of the overall circuit. The symmetrically arranged mounting and positioning supports 5 on both sides of the overall ink cartridge 1 have the core function of achieving precise positioning and stable support between the overall ink cartridge 1 and the device body and various components. On the one hand, it ensures the accurate installation position of the overall ink cartridge 1 inside the device, preventing abnormal ink supply and signal transmission interruptions due to vibration or displacement during operation; on the other hand, it supports the flexible circuit boards 3 on both sides of the overall ink cartridge 1. The ink supply line 2 serves as an auxiliary protection mechanism, preventing damage to components due to collisions or compression, and ensuring the stability of the overall structure of the device. The printhead chip 6 is installed at the bottom of the contact array PCB 4 and is the core execution component of the inkjet recording device. Its core function is to receive drive control signals transmitted through the contact array PCB 4 and the flexible circuit board 3, convert the ink delivered by the ink supply line 2 into precise ink droplets, complete the inkjet operation according to preset instructions, and at the same time, it can provide feedback on its own working status signals to ensure the clarity and accuracy of the inkjet. It is a key component for realizing the inkjet function of the device.

[0036] Working Principle: Device Power-On Startup: When the inkjet recording device is powered on, the system first controls the corresponding detection chip. If Scheme 1 is selected, independent detection chip 701 is activated; if Scheme 2 is selected, independent detection chip 702 is activated; and if Scheme 3 is selected, independent detection chip 703 is activated. The associated circuitry components are also activated first to complete initialization, ensuring the detection chips and circuitry components are in normal working order, preparing for subsequent testing. At this time, printhead chip 6 is not activated to avoid malfunction or damage due to poor contact. The ink cartridge 1 provides the installation and support foundation for the entire testing system. Test Signal Applied: After the corresponding detection chip and its associated circuitry components have started up... The detection chip, with independent detection chip 1 (701), independent detection chip 2 (702), and independent detection chip 3 (703), applies a preset test level or test current to the contact detection terminal. The parameters of the test signal can be set according to actual detection needs, ensuring that the test signal can accurately reflect the contact state of the terminal, while avoiding damage to the nozzle chip 6, the corresponding detection chip, and the circuit carrier components. It adapts to the signal transmission characteristics of the three schemes. Signal acquisition and judgment: Independent detection chip 1 (701), independent detection chip 2 (702), and independent detection chip 3 (703) of the corresponding scheme acquire key parameters such as the conduction state, voltage signal, and current signal of the contact detection terminal in real time through their matching circuit carrier components. The chip transmits the collected signals to its comparison and judgment unit, which compares and analyzes them against preset normal thresholds to determine whether the terminal contact is good and whether the signal transmission is stable. Simultaneously, the detection chip feeds back the collected raw signals and judgment results to its control unit in real time, ensuring timely and accurate signal transmission. Normal operation is permitted if, according to the corresponding scheme's independent detection chips 701, 702, and 703, the conduction status, voltage, and current of all contact detection terminals are normal, and no abnormal alarm signal CKOUT is output, then the connection between the inkjet recorder head and the device side is considered reliable. The detection chip then issues a control signal, allowing the printhead chip 6 to start operation. Once the printhead enters normal inkjet printing mode, ensuring it remains secure during operation, all three schemes follow this control logic. Abnormal shutdown protection: If the independent detection chip 1 (701), independent detection chip 2 (702), or independent detection chip 3 (703) of the corresponding scheme determines that any contact detection terminal has poor contact, short circuit, abnormal voltage, abnormal current, or other issues, or if it outputs an abnormal alarm signal CKOUT, then an abnormal connection is immediately detected. The detection chip immediately issues a shutdown signal, stopping the printhead chip 6 from starting or stopping its current operation. Simultaneously, an abnormality prompt can be output through the device's display unit to remind the user to check and maintain the device, preventing printhead damage, reduced inkjet quality, or device malfunction due to abnormal contact.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An inkjet recording head, comprising a printhead chip (6) having an ink discharge outlet, and an element for generating ink discharge energy; Independent detection chips, including independent detection chip one (701), independent detection chip two (702) and independent detection chip three (703), collect conduction status and voltage signals, determine the overall connection reliability, and output an abnormality notification signal when there is an abnormal contact. The contact array PCB (4) and the independent circuit patch (9) are provided with multiple connection terminals inside, which are used to make contact with the device side terminals when installed on the inkjet recording device to achieve electrical connection; Its features are: Multiple connection terminals are arranged in a planar area, and at least three connection terminals located in the middle and two corners of the planar area are used as contact detection terminals.

2. The inkjet recording head according to claim 1, characterized in that: The independent detection chip 1 (701) is installed inside the contact array PCB (4), and the independent detection chip 3 (703) is installed on one side of the independent circuit patch (9), and the independent circuit patch (9) is installed on one side of the contact array PCB (4).

3. An inkjet recording head according to claim 2, characterized in that: The connecting terminals are arranged within a rectangular planar area, with the middle position being near the geometric center of the area, and the two corner positions being any two of the four corners of the area.

4. An inkjet recording head according to claim 3, characterized in that: The contact detection terminals transmit different types of signals, including at least two of the following: drive control signals, temperature sensor signals, logic power signals, and independent contact detection signals.

5. An inkjet recording head according to claim 4, characterized in that: The printhead chip only includes a drive circuit, a temperature sensing unit, and a signal interface unit, and does not have contact detection logic, calculation, or output functions. The element that generates ink discharge energy is an electrothermal conversion element, and ink droplet discharge is achieved through film boiling. The detection terminals in the connection terminal array transmit drive control signals including HE heating control signal and CLK clock signal. The logic power supply signal is VDD. The independent contact detection signals include CKIN1 and CKIN2 input signals and CKOUT abnormal notification signal.

6. An inkjet recording head according to claim 5, characterized in that: The detection logic of the independent detection chip 1 (701), independent detection chip 2 (702), and independent detection chip 3 (703) is consistent: when the logic power supply (VDD) is normally supplied, the CKOUT signal output by each detection chip is the NOT operation of the logical AND operation result of the corresponding detection terminal CKIN1 and CKIN2 signals, that is, CKOUT = (CKIN1 & CKIN2). When the logic power supply is not provided or the power supply is abnormal, the CKOUT signal of each detection chip will output a low level by default.

7. An inkjet recording device, comprising an integral ink cartridge (1) and an inkjet recording head as described in any one of claims 1-6, characterized in that: The integral ink cartridge (1) is provided with ink supply pipelines (2) on both sides, and flexible circuit boards (3) are provided on both sides of the integral ink cartridge (1). The contact array PCB (4) is installed on one side of the integral ink cartridge (1). The integral ink cartridge (1) is provided with mounting and positioning support (5) on both sides. The printhead chip (6) is installed at the bottom of the contact array PCB (4).

8. An inkjet recording device according to claim 7, characterized in that: The independent detection chip 2 (702) is installed on one side of the overall ink cartridge (1), and a mounting and positioning buckle (8) is provided on one side of the contact array PCB (4), and the independent circuit patch (9) is installed on one side of the contact array PCB (4) through the mounting and positioning buckle (8).

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