Identity management circuit and method for fuse type sprinkler

Abstract

The present invention relates to an identity management circuit of a fuse-type nozzle, comprising a print nozzle for installation in a printer and a control circuit board, wherein the print nozzle comprises a fuse array and a gating module, wherein the fuse array comprises a plurality of fuses, and each fuse is electrically connected to the gating module. The control circuit board comprises a controller, an identity writing module, an identity reading module and a power supply circuit, wherein the controller is electrically connected to the identity writing module, the identity reading module and the gating module respectively, the power supply circuit is electrically connected to the identity writing module and the identity reading module respectively, and the identity writing module and the identity reading module are electrically connected to the gating module respectively. The identity management circuit of the fuse-type nozzle has low cost and high stability of identity information. The present invention also relates to an identity management method of a fuse-type nozzle that characterizes identity information by on-off state data of a fuse array in a print nozzle.

Description

Technical Field

[0001] The invention relates to an identity management circuit of a fuse type nozzle, and also relates to an identity management method of a fuse type nozzle. Background Art

[0002] Printers are office tools used in various places such as homes and companies. To ensure printing results, the print heads in the printers are usually required to be installed with specific models of the brand to avoid problems such as other print heads not being able to match and install in the printer or poor printing results. For this reason, the print heads in the printers usually have identity information so that the printers can effectively read the print head information when working, and then remind the user of the print head status.

[0003] For example, the Chinese invention patent application entitled "Inkjet Print Head, Inkjet Imaging Device and Method of Maintenance Operation Therein" with the authorization publication number CN1883943A (application number 200610067859.X) discloses a print head including a memory for storing identity information. On the one hand, the use of a memory is costly. On the other hand, the identity information of the print head is usually written first, and then the print head with the identity information is installed in the printer, and writing the identity information into the print head requires additional equipment to perform the operation. Moreover, when users directly purchase a print head with identity information, they cannot effectively identify whether the print head is a genuine product because they do not have a device to read the information when purchasing. Summary of the invention

[0004] The first technical problem to be solved by the present invention is to provide an identity management circuit for a fuse-type nozzle with low cost and high identity information stability in view of the above-mentioned prior art.

[0005] The second technical problem to be solved by the present invention is to provide an identity management method for a fuse-type nozzle that represents identity information by printing the on-off state data of a fuse array in the nozzle in response to the above-mentioned prior art.

[0006] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: an identity management circuit of a fuse-type nozzle, comprising a print nozzle and a control circuit board for installation in a printer, characterized in that: the print nozzle comprises a fuse array and a gating module, the fuse array comprises a plurality of fuses, and each fuse is electrically connected to the gating module respectively;

[0007] The control circuit board includes a controller, an identity writing module, an identity reading module and a power supply circuit. The controller is electrically connected to the identity writing module, the identity reading module and the gating module respectively. The power supply circuit is electrically connected to the identity writing module and the identity reading module respectively. The identity writing module and the identity reading module are electrically connected to the gating module respectively.

[0008] Preferably, the identity writing module includes a first resistor, a second resistor, an eighth resistor, a ninth resistor, a first MOS transistor, a first triode, and a first diode;

[0009] The first end of the eighth resistor is electrically connected to the signal input end of the controller, the second end of the eighth resistor is electrically connected to the base of the first transistor, the first end of the ninth resistor is electrically connected to the second end of the eighth resistor, the second end of the ninth resistor and the emitter of the first transistor are grounded, the collector of the first transistor is electrically connected to the first end of the second resistor, the second end of the second resistor is electrically connected to the gate of the first MOS tube, the first end of the first resistor is electrically connected to the second end of the second resistor, the second end of the first resistor and the source of the first MOS tube are respectively electrically connected to the power supply end of the power supply module, the positive electrode of the first diode is electrically connected to the drain of the first MOS tube, and the negative electrode of the first diode is electrically connected to the selection module.

[0010] Preferably, the identity reading module includes a power-on circuit for powering on the gating circuit, and a signal reading circuit capable of acquiring the state of the fuse array.

[0011] Preferably, the power-on circuit includes a third resistor, a fourth resistor, a fifth resistor, a tenth resistor, an eleventh resistor, a second MOS transistor, a second triode, and a second diode; the signal reading circuit includes a sixth resistor and a seventh resistor;

[0012] The first end of the tenth resistor is electrically connected to the signal output end of the controller, the second end of the tenth resistor is electrically connected to the base of the second triode, the first end of the eleventh resistor is electrically connected to the second end of the tenth resistor, the second end of the eleventh resistor and the emitter of the second triode are grounded, the collector of the second triode is electrically connected to the first end of the fourth resistor, the second end of the fourth resistor is electrically connected to the gate of the second MOS tube, the first end of the third resistor is electrically connected to the second end of the fourth resistor, the second end of the third resistor and the source of the second MOS tube are respectively electrically connected to the power supply end of the power supply module, the drain of the second MOS tube is electrically connected to the first end of the fifth resistor, the second end of the fifth resistor is electrically connected to the positive electrode of the second diode, and the negative electrode of the second diode is electrically connected to the selection module;

[0013] The first end of the sixth resistor is electrically connected to the second end of the fifth resistor, the second end of the sixth resistor is electrically connected to the first end of the seventh resistor, the second end of the seventh resistor is grounded, and the first end of the seventh resistor is electrically connected to the signal input end of the controller.

[0014] The technical solution adopted by the present invention to solve the above second technical problem is: a method for managing the identity of a fuse-type nozzle, characterized in that: it includes an identity writing method and an identity recognition method;

[0015] The identity writing method is as follows: S1, after the print head is placed in the printer, the controller in the printer sends selection combination data to the selection module in the print head, and the selection combination data can represent information on whether each fuse in the fuse sequence is blown; S2, the controller controls the identity writing module to work, thereby realizing the power-on of the selection module, and the selection module selects the fuses that need to be blown in turn according to the selection combination data, thereby completing the identity writing work of the print head.

[0016] The identity recognition method is as follows: a controller controls the identity reading module to work, thereby realizing the power-on of the selection module, and the selection module sequentially selects each fuse in the fuse array; at the same time, the identity reading module obtains the print head identity information formed by the on and off status of each fuse, thereby realizing the identity recognition of the print head.

[0017] Preferably, before performing the identity recognition method, the controller controls the strobe module to strobe all fuses in the fuse array, and the identity reading module reads the signal of the print head and transmits it to the controller, and then determines that the print head is in one of the following states according to the size of the signal: the print head is not electrically connected and installed in the printer, the print head is electrically connected and installed in the printer but the identity writing operation has not been performed, and the print head is electrically connected and installed in the printer and the identity writing operation has been completed;

[0018] When it is determined that the print head is electrically connected and installed in the printer and the identity writing operation has been completed, the identity information of the print head is identified by using an identity identification method.

[0019] In order to ensure the particularity of each print head, so as to effectively obtain the characteristic information of the print head, and effectively confirm the identity of the print head to avoid the substitutability of other products, each print head has corresponding identity characteristic information;

[0020] After the print head is installed in the printer, the identity characteristic information of the installed print head is imported into the controller of the printer through an external device;

[0021] The controller stores the gating combination data corresponding to different identity characteristic information of the printing nozzle;

[0022] The controller determines the corresponding strobe combination data according to the acquired identity feature information, and then completes the identity writing work of the print head according to the strobe combination data.

[0023] Preferably, the identity characteristic information of the print head includes thermal resistance information, applicable ambient temperature information, resistance information, type information, life information and / or usage information.

[0024] In order to effectively realize the output of the print head's scrapping information, when the controller determines that the current print head has reached its corresponding service life, the controller controls the identity writing module to operate according to the print head scrapping information sent by the controller to the selection module, and then selects and blows at least one of the remaining fuses in the print head, so that the print head scrapping data formed by the on and off states of each fuse in the fuse array matches the print head scrapping information.

[0025] In order to effectively remind users of the scrapping of print heads and effectively ensure the printing effect of print heads, when the identity reading module reads the print head scrapping data in the print head, it transmits the print head scrapping data to the controller. The controller prompts the user to replace the print head or the controller directly uploads the information about the expiration of the print head life to the product party's network service platform.

[0026] Compared with the prior art, the advantages of the present invention are: the identity management circuit of the fuse-type nozzle in the present invention, using the identity management method of the fuse-type nozzle, can write the identity of the print nozzle after the print nozzle is installed in the printer by melting or retaining each fuse in the print nozzle, and the identity information cannot be modified and can be paired with the printer one-to-one in real time, and the identity information is more accurate. And the cost of the identity management circuit of the fuse-type nozzle is low. In addition, when the printer is working, it can effectively identify whether the print nozzle installed in the printer is a print nozzle that matches the printer standard, ensuring the reliable printing work, thereby effectively ensuring the printing effect.

[0027] The print heads in the printer can only be rewritten by professional printer service personnel. Users do not need to replace the print heads by themselves, which ensures the performance stability of the print heads after installation and avoids the possibility of users purchasing unqualified print heads. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the identity management circuit module of the fuse-type nozzle in the embodiment of the present invention.

[0029] Figure 2 4 is a circuit diagram of an identity management circuit of a fuse-type nozzle in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below with reference to the accompanying drawings.

[0031] like Figure 1As shown, the identity management circuit of the fuse-type nozzle in this embodiment includes a print nozzle 100 for installation in a printer and a control circuit board 200, and the control circuit board 200 can perform various tasks for controlling the printer. After the print nozzle 100 is installed in the printer, it is electrically connected to the control circuit board 200.

[0032] The print head 100 includes a fuse array 1 and a gating module 2, wherein the fuse array 1 includes a plurality of fuses, each of which is electrically connected to the gating module 2; the number of fuses is specifically set as needed, such as in the present embodiment, 22 fuses are set in a specific arrangement order and each fuse is labeled and defined as labels H1 to H22. When in use, the gating module 2 can sequentially switch on and off each fuse in the fuse array 1, so that a fuse with a specific label can be blown by passing a large current through the fuse with a specific label, thereby writing the identity information of the print head 100. At the same time, the on-off status of each fuse is obtained by powering on the gating module 2, and then the identity information of the print head 100 is read, such as when the fuse is not blown, the corresponding level signal is obtained, and then the information 0 is obtained, and when the fuse is blown, the corresponding level signal is obtained, and then the information 1 is obtained, so that the identity information of the print head 100 is formed by obtaining the combination information of 0 and 1 of the fuse array 1.

[0033] The control circuit board 200 includes a controller 3, an identity writing module 4, an identity reading module 5 and a power supply circuit 6. The controller 3 is electrically connected to the identity writing module 4, the identity reading module 5 and the gating module 2 respectively. The power supply circuit 6 is electrically connected to the identity writing module 4 and the identity reading module 5 respectively. The identity writing module 4 and the identity reading module 5 are electrically connected to the gating module 2 respectively. The controller 3 and the power supply circuit 6 can select various controllers 3 and various applicable power supply circuits 6 in the prior art.

[0034] The identity writing module 4 can be turned on through the control signal of the controller 3 on the basis of the power supply circuit 6 being energized, thereby realizing an electrical connection with the gating module 2, and the gating module 2 can control the gating status of each fuse according to the gating combination data sent by the controller 3, thereby realizing the writing of identity information.

[0035] The identity reading module 5 includes a power-on circuit for energizing the gating circuit and a signal reading circuit capable of acquiring the state of the fuse array 1. When working, on the basis of the power supply circuit 6 being energized, the power-on circuit is turned on by the control signal of the controller 3, thereby realizing an electrical connection with the gating module 2, and determining the identity information of the print head 100 by using the on / off state signal of each fuse read by the signal reading circuit.

[0036] like Figure 2As shown, the identity writing module 4 in this embodiment includes a first resistor R1, a second resistor R2, an eighth resistor R8, a ninth resistor R9, a first MOS transistor Q1, a first triode Q2, and a first diode D1. The first end of the eighth resistor R8 is electrically connected to the signal input end of the controller 3, the second end of the eighth resistor R8 is electrically connected to the base of the first triode Q2, the first end of the ninth resistor R9 is electrically connected to the second end of the eighth resistor R8, the second end of the ninth resistor R9 and the emitter of the first triode Q2 are grounded, the collector of the first triode Q2 is electrically connected to the first end of the second resistor R2, the second end of the second resistor R2 is electrically connected to the gate of the first MOS transistor Q1, the first end of the first resistor R1 is electrically connected to the second end of the second resistor R2, the second end of the first resistor R1 and the source of the first MOS transistor Q1 are electrically connected to the power supply end of the power supply module, the positive electrode of the first diode D1 is electrically connected to the drain of the first MOS transistor Q1, and the negative electrode of the first diode D1 is electrically connected to the gating module 2.

[0037] In this embodiment, the power-on circuit includes a third resistor R3, a fourth resistor R4, a fifth resistor R5, a tenth resistor R10, an eleventh resistor R11, a second MOS transistor Q3, a second transistor Q4, and a second diode D2; the signal reading circuit includes a sixth resistor R6 and a seventh resistor R7. A first end of the tenth resistor R10 is electrically connected to the signal output end of the controller 3, a second end of the tenth resistor R10 is electrically connected to the base of the second triode Q4, a first end of the eleventh resistor R11 is electrically connected to the second end of the tenth resistor R10, a second end of the eleventh resistor R11 and an emitter of the second triode Q4 are grounded, a collector of the second triode Q4 is electrically connected to a first end of the fourth resistor R4, a second end of the fourth resistor R4 is electrically connected to a gate of the second MOS tube Q3, a first end of the third resistor R3 is electrically connected to a second end of the fourth resistor R4, a second end of the third resistor R3 and a source of the second MOS tube Q3 are electrically connected to a power supply end of the power supply module, a drain of the second MOS tube Q3 is electrically connected to a first end of the fifth resistor R5, a second end of the fifth resistor R5 is electrically connected to a positive electrode of the second diode D2, and a negative electrode of the second diode D2 is electrically connected to the selection module 2. The first end of the sixth resistor R6 is electrically connected to the second end of the fifth resistor R5, the second end of the sixth resistor R6 is electrically connected to the first end of the seventh resistor R7, the second end of the seventh resistor R7 is grounded, and the first end of the seventh resistor R7 is electrically connected to the signal input end of the controller 3.

[0038] In order to ensure the particularity of each print head 100, to effectively obtain the characteristic information of the print head 100, and to effectively confirm the identity of the print head 100, to avoid the substitutability of other products, and correspondingly to avoid the imitation of other print heads 100, each print head 100 has corresponding identity characteristic information. The identity characteristic information of the print head 100 includes thermal resistance information, applicable ambient temperature information, resistance information, type information, life information and / or usage information. Some of the identity characteristic information of the print head 100 can be detected by special detection equipment before the print head 100 is installed in the printer. That is, the detection equipment is used to test whether the nozzle is qualified. If qualified, the thermal resistance information, applicable ambient temperature information, resistance information and other identity characteristic information of the good print nozzle 100 are obtained, and then the identity characteristic information is stored in the computer so that the identity characteristic information data can correspond one by one to the corresponding print nozzle 100. In addition, the computer can also supplement the type information, life information, use information and other identity characteristic information of each print nozzle 100 to form a complete identity characteristic information.

[0039] After the print head 100 is installed in the printer, the identity feature information corresponding to the installed print head 100 is imported into the controller 3 of the printer through an external device, wherein the external device is an external computer storing the identity feature information of the print head 100. The controller 3 stores the strobe combination data corresponding to the different identity feature information of the print head 100, and the strobe combination data uses different digital segments to represent each identity feature information in the print head 100. The number of selection combination data in this embodiment is the same as the number of fuses in the fuse array 1 and corresponds to the fuse labels one by one. For example, for fuses defined as H1 to H22, the corresponding selection combination data are N1 to N22, respectively, wherein the data combination of N1 to N4 represents the thermal resistance information of the print head 100, the data combination of N5 to N8 represents the applicable ambient temperature information of the print head 100, the data combination of N9 to N12 represents the resistance information of the print head 100, the data combination of N13 to N16 represents the type information of the print head 100, the data combination of N17 to N20 represents the life information of the print head 100, and the data combination of N21 to N22 represents the usage information of the print head 100.

[0040] The identity management method of the fuse-type nozzle in this embodiment includes an identity writing method and an identity recognition method.

[0041] The identity writing method is as follows: S1, after the print head 100 is placed in the printer, an external device imports the identity feature information corresponding to the installed print head 100 into the controller 3 of the printer, and the controller 3 obtains the corresponding selection combination data according to the identity feature information of the print head 100; the controller 3 in the printer sends the selection combination data to the selection module 2 in the print head 100, and the selection combination data can represent the information of whether each fuse in the fuse sequence is blown, such as the selection data corresponding to the fuse that needs to be blown is 1, and the selection data corresponding to the fuse that does not need to be blown is 0, thereby forming the selection combination data composed of 0 and 1; S2, the controller 3 controls the identity writing module 4 to work, thereby realizing the power-on of the selection module 2, and the selection module 2 selects the fuses that need to be blown in turn according to the selection combination data, so as to complete the identity writing work of the print head 100, and the on-off state of each fuse in the fuse array 1 directly represents its identity information. The specific process of S2 is as follows: the signal output terminal GPIO1 of the controller 3 sends an identity writing signal, so that the base of the first transistor Q2 is pulled high, the collector and emitter of the first transistor Q2 are turned on, and the current flows through the first resistor R1, the second resistor R2, and the first transistor Q2, pulling down the voltage of the gate of the first MOS transistor Q1, and the corresponding source and drain of the first MOS transistor Q1 are turned on, so that the power supply circuit 6 supplies the power to the first MOS transistor Q1. The identity writing module 4 supplies the power of the power supply circuit 6 to the fuse array 1 of the print head 100 through the first diode D1. And through the gating control of the combination gating module 2, for the fuses labeled H1 to H22, the fuses that need to be blown are energized, and the fuses that need to be retained are selected to be not energized and skipped. In addition, the first diode D1 in the identity writing module 4 can prevent the power supply of the power supply circuit 6 from reversely entering the drain of the first MOS tube Q1 in the identity writing power supply module during subsequent identity reading, thereby disrupting the original path of the voltage divider circuit formed by the sixth resistor R6 and the seventh resistor R7 in the signal reading circuit, thereby rendering the reading function invalid.

[0042] The identity recognition method is as follows: the controller 3 controls the identity reading module 5 to work, thereby realizing the power-on of the strobe module 2, and the strobe module 2 sequentially strobes each fuse in the fuse array 1; at the same time, the identity reading module 5 obtains the identity information of the print head 100 formed by the on-off state of each fuse, thereby realizing the identity recognition of the print head 100. Before each printing action, the printer will read and confirm the identity information of the print head 100, and the read information will be used for subsequent printing correction. Specifically, the signal output terminal GPIO2 of the controller 3 sends an identity reading signal, so that the base of the second transistor Q4 is pulled high, the collector and emitter of the second transistor Q4 are turned on, and the current flows through the third resistor R3, the fourth resistor R4, and the second transistor Q4, pulling down the voltage of the gate of the second MOS tube Q3, and the source and drain of the second MOS tube Q3 are turned on, so that the power supply circuit 6 supplies the power to the second MOS tube Q3. The identity reading module 5 supplies the power of the power supply circuit 6 to the fuse array 1 of the print head 100 through the fifth resistor R5 and the second diode D2. Then, the fuses labeled H1 to H22 are sequentially selected through the combined selection signal control of the selection module 2. Each time the fuse is selected, the sixth resistor R6 and the seventh resistor R7 form a voltage divider circuit, and the signal input terminal GPIO3 of the controller 3 reads the selected voltage, and the on-off status of the 22 fuses is read in sequence, that is, the identity information of the print head 100 is obtained.

[0043] The second diode D2 can prevent the reverse power supply from entering the controller 3 through the sixth resistor R6 during the identity writing process and damaging the controller 3. The fifth resistor R5 limits the current supply when reading the identity information to prevent similar writing functions from causing the reading function to fail.

[0044] In order to confirm the specific situation of the print head 100 in the printer, especially when a print head 100 is just installed in the printer, before the identity recognition method is performed, the controller 3 controls the strobe module 2 to strobe all the fuses in the fuse array 1, and the identity reading module 5 reads the signal of the print head 100 and transmits it to the controller 3, and then judges that the print head 100 is in one of the following states according to the size of the signal: the print head 100 is not electrically connected and installed in the printer, the print head 100 is electrically connected and installed in the printer but the identity writing operation is not performed, and the print head 100 is electrically connected and installed in the printer and the identity writing operation has been completed. If it is determined that the print head 100 is not electrically connected and installed in the printer, the controller 3 reminds to perform the electrical connection of the print head 100. If it is determined that the print head 100 is electrically connected and installed in the printer but the identity writing operation is not performed, the controller 3 reminds to perform the identity writing of the print head 100. If it is determined that the print head 100 is electrically connected and installed in the printer and the identity writing operation has been completed, the identity information of the print head 100 is identified by the identity recognition method. This process can be performed during the printer manufacturing process or when the after-sales service personnel replace the print head 100.

[0045] The voltage divider circuit of the sixth resistor R6 and the seventh resistor R7 connected in series can prevent the controller 3 from receiving a voltage greater than the bearing limit. The sixth resistor R6 and the seventh resistor R7 are connected in parallel with the fuse in the installed print head 100 to form a resistor that needs to be identified, and then form a voltage divider circuit with the fifth resistor R5, so that the final voltage of the resistor that needs to be identified can be identified by the control system after being divided by the sixth resistor R6 and the seventh resistor R7. The selection of the resistance values ​​of R5, R6, and R7 needs to meet the following conditions: when the print head 100 is not electrically connected and installed in the printer, the print head 100 is electrically connected and installed in the printer but the identity writing operation has not been performed, and the print head 100 is electrically connected and installed in the printer and the identity writing operation has been completed, the signal input terminal GPIO3 of the controller 3 can read different voltage signals, thereby determining these different states.

[0046] During the operation of the printer, the controller 3 can accumulate and time the working time of the print head 100. In order to effectively output the scrap information of the print head 100 and remind the user to replace the print head 100 in time to ensure the printing effect, when the controller 3 determines that the accumulated working time of the current print head 100 reaches the corresponding service life, according to the scrap information of the print head sent by the controller 3 to the selection module 2, the controller 3 controls the identity writing module 4 to work, and then selects and fuses at least one of the remaining fuses in the print head 100, so that the scrap data of the print head 100 formed by the on-off state of each fuse in the fuse array 1 matches the scrap information of the print head. When the identity reading module 5 reads the scrap data of the print head 100 formed by the on-off state of each fuse in the print head 100, the scrap data of the print head 100 is transmitted to the controller 3, and the controller 3 prompts the user to replace the print head 100 or the controller 3 directly uploads the information of the expiration of the print head life to the network service platform of the product party.

[0047] The identity management circuit of the fuse-type nozzle in the present invention utilizes the identity management method of the fuse-type nozzle. After the print head 100 is installed in the printer, the identity of the print head 100 is written by fusing or retaining each fuse in the print head 100. The identity information cannot be modified and can be one-to-one paired with the printer for a certain period of time, and the identity information is more accurate. In addition, the cost of the identity management circuit of the fuse-type nozzle is low. In addition, when the printer is working, it can effectively identify whether the print head 100 installed in the printer is a print head 100 that matches the printer standard, ensuring the reliable performance of the printing work, thereby effectively ensuring the printing effect. The identity management circuit of the print head 100 can prevent data tampering, has low cost, is simpler to install, simplifies the control circuit, and will not lose data when encountering magnetic materials, and has high reliability of identity information.

[0048] In addition, the print head 100 in the printer can only be identified by professional printer service personnel, and the user does not need to replace the print head 100 by himself, thereby ensuring the performance stability of the print head 100 after installation and avoiding the possibility of users purchasing unqualified print heads 100.

Claims

1. A fuse-type printhead identity management circuit, comprising a printhead (100) for installation in a printer and a control circuit board (200), characterized in that: The print head (100) comprises a fuse array (1) and a gating module (2), wherein the fuse array (1) comprises a plurality of fuses, each fuse being electrically connected to the gating module (2) respectively; The control circuit board (200) comprises a controller (3), an identity writing module (4), an identity reading module (5) and a power supply circuit (6); the controller (3) is electrically connected to the identity writing module (4), the identity reading module (5) and the gating module (2), respectively; the power supply circuit (6) is electrically connected to the identity writing module (4) and the identity reading module (5), respectively; and the identity writing module (4) and the identity reading module (5) are electrically connected to the gating module (2), respectively; The identity writing module (4) comprises a first resistor (R1), a second resistor (R2), an eighth resistor (R8), a ninth resistor (R9), a first MOS transistor (Q1), a first triode (Q2), and a first diode (D1); The first end of the eighth resistor (R8) is electrically connected to the signal input end of the controller (3), the second end of the eighth resistor (R8) is electrically connected to the base of the first triode (Q2), the first end of the ninth resistor (R9) is electrically connected to the second end of the eighth resistor (R8), the second end of the ninth resistor (R9) and the emitter of the first triode (Q2) are grounded, the collector of the first triode (Q2) is electrically connected to the first end of the second resistor (R2), the second end of the second resistor (R2) is electrically connected to the gate of the first MOS tube (Q1), the first end of the first resistor (R1) is electrically connected to the second end of the second resistor (R2), the second end of the first resistor (R1) and the source of the first MOS tube (Q1) are respectively electrically connected to the power supply end of the power supply module, the positive electrode of the first diode (D1) is electrically connected to the drain of the first MOS tube (Q1), and the negative electrode of the first diode (D1) is electrically connected to the selection module (2); The identity management circuit of the fuse type nozzle uses the identity management method of the fuse type nozzle, and the identity management method of the fuse type nozzle includes an identity writing method and an identity recognition method; The identity writing method comprises: S1, after the print head (100) is placed in the printer, the controller (3) in the printer sends gating combination data to the gating module (2) in the print head (100), and the gating combination data can indicate whether each fuse in the fuse sequence is blown; S2, the controller (3) controls the identity writing module (4) to work, thereby realizing the power-on of the gating module (2), and the gating module (2) sequentially gating the fuses that need to be blown according to the gating combination data, thereby completing the identity writing work of the print head (100); The identity recognition method comprises the following steps: a controller (3) controls the identity reading module (5) to operate, thereby realizing the power-on of the strobe module (2), and the strobe module (2) sequentially strobes each fuse in the fuse array (1); at the same time, the identity reading module (5) obtains the identity information of the print head (100) formed by the on-off state of each fuse, thereby realizing the identity recognition of the print head (100).

2. The identity management circuit of the fuse-type nozzle according to claim 1, characterized in that: The identity reading module (5) comprises a power-on circuit for powering on the gating circuit, and a signal reading circuit capable of acquiring the state of the fuse array (1).

3. The identity management circuit of the fuse-type nozzle according to claim 2, characterized in that: The power-on circuit includes a third resistor (R3), a fourth resistor (R4), a fifth resistor (R5), a tenth resistor (R10), an eleventh resistor (R11), a second MOS transistor (Q3), a second triode (Q4), and a second diode (D2); the signal reading circuit includes a sixth resistor (R6) and a seventh resistor (R7); The first end of the tenth resistor (R10) is electrically connected to the signal output end of the controller (3), the second end of the tenth resistor (R10) is electrically connected to the base of the second triode (Q4), the first end of the eleventh resistor (R11) is electrically connected to the second end of the tenth resistor (R10), the second end of the eleventh resistor (R11) and the emitter of the second triode (Q4) are grounded, the collector of the second triode (Q4) is electrically connected to the first end of the fourth resistor (R4), the second end of the fourth resistor (R4) is electrically connected to the gate of the second MOS tube (Q3), the first end of the third resistor (R3) is electrically connected to the second end of the fourth resistor (R4), the second end of the third resistor (R3) and the source of the second MOS tube (Q3) are respectively electrically connected to the power supply end of the power supply module, the drain of the second MOS tube (Q3) is electrically connected to the first end of the fifth resistor (R5), the second end of the fifth resistor (R5) is electrically connected to the positive electrode of the second diode (D2), and the negative electrode of the second diode (D2) is electrically connected to the selection module (2); The first end of the sixth resistor (R6) is electrically connected to the second end of the fifth resistor (R5), the second end of the sixth resistor (R6) is electrically connected to the first end of the seventh resistor (R7), the second end of the seventh resistor (R7) is grounded, and the first end of the seventh resistor (R7) is electrically connected to the signal input end of the controller (3).

4. The identity management circuit of the fuse-type nozzle according to claim 1, characterized in that: Before performing the identity recognition method, the controller (3) controls the strobe module (2) to strobe all fuses in the fuse array (1), and the identity reading module (5) reads the signal of the print head (100) and transmits it to the controller (3), and then determines whether the print head (100) is in one of the following states according to the size of the signal: the print head (100) is not electrically connected and installed in the printer, the print head (100) is electrically connected and installed in the printer but the identity writing operation has not been performed, and the print head (100) is electrically connected and installed in the printer and the identity writing operation has been completed; When it is determined that the print head (100) is electrically connected and installed in the printer and the identity writing operation has been completed, the identity information of the print head (100) is identified using an identity identification method.

5. The identity management circuit of the fuse-type nozzle according to claim 1, characterized in that: Each print head (100) has corresponding identity feature information; After the print head (100) is installed in the printer, the identity feature information of the installed print head (100) is imported into the controller (3) of the printer through an external device; The controller (3) stores selection combination data corresponding to different identity feature information of the print head (100); The controller (3) determines corresponding strobe combination data according to the acquired identity feature information, and then completes the identity writing work of the print head (100) according to the strobe combination data.

6. The identity management circuit of the fuse-type nozzle according to claim 5, characterized in that: The identity characteristic information of the printing nozzle (100) includes thermal resistance information, applicable ambient temperature information, resistance information, type information, life information and / or usage information.

7. The identity management circuit of the fuse-type nozzle according to claim 1, characterized in that: When the controller (3) determines that the current print head (100) has reached the corresponding service life, the controller (3) controls the identity writing module (4) to operate according to the print head scrapping information sent by the controller (3) to the selection module (2), thereby selecting and blowing at least one of the remaining fuses in the print head (100), so that the print head (100) scrapping data formed by the on and off states of the fuses in the fuse array (1) matches the print head scrapping information.

8. The identity management circuit of the fuse-type nozzle according to claim 7, characterized in that: When the identity reading module (5) reads the print head (100) scrap data in the print head (100), the print head (100) scrap data is transmitted to the controller (3), and the controller (3) prompts the user to replace the print head (100) or the controller (3) directly uploads the information of the expiration of the print head life to the network service platform of the product party.

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