Film printer power supply system, control method, device and medium

Abstract

The application provides a film printer power supply system, a control method, equipment and a medium. The system comprises a power supply, a power supply transfer plate, a print head, and a printer system. The input end of the power supply transfer plate is connected with the power supply. The print head is connected with the first output end of the power supply transfer plate. The communication end of the power supply transfer plate is connected with the printer system. The power supply transfer plate is used for stabilizing and compensating the print head when the logic signal sent by the printer system is acquired through the communication end, so that the print head voltage is stable, the printer can obtain more stable heating hardware support, the printing quality is improved, better printing imaging is obtained, and the power supply transfer plate can distribute power, so that the print head and other system parts no longer take power from the same power supply branch, thereby reducing the possibility of power interference, effectively solving the problem of power voltage jumping, preventing the print head voltage from being reduced too much during high-power work, and avoiding lightening of the printing color.

Description

Technical Field

[0001] This invention relates to the field of film printer technology, and more particularly to a power supply system, control method, device, and medium for a film printer. Background Technology

[0002] In traditional film printing systems, the power supply for the printhead is usually directly from a general-purpose power source, which leads to the following problems: First, when the printhead is operating at high power, voltage instability may cause changes in the printed texture, such as lighter colors. Second, if other parts of the system are also using the same power source, electrical interference may occur, further reducing print quality and stability. Summary of the Invention

[0003] The following is an overview of the subject matter described in detail herein. This overview is not intended to limit the scope of the claims.

[0004] This invention provides a power supply system, control method, device, and medium for a film printer, aiming to solve the technical problem in the prior art where the power supply directly powers the print head, resulting in unstable voltage when the print head is in a high-power operating state.

[0005] To achieve the above objectives, a first aspect of the present invention provides a power supply system for a film printer, the system comprising:

[0006] power supply;

[0007] A power transfer board, with its input terminal connected to the power source;

[0008] The printhead is connected to the first output terminal of the power transfer board;

[0009] The printer system is connected to the communication terminal of the power relay board;

[0010] The power relay board is used to perform voltage stabilization compensation on the print head when it receives the logic signal sent by the printer system through the communication terminal.

[0011] In some embodiments, the printer system is configured to obtain the power supply voltage corresponding to the print head, and send a logic signal to the power transfer board when the power supply voltage is greater than or equal to a first reference voltage value.

[0012] In some embodiments, the printer system is connected to the second output terminal of the power transfer board, which is further configured to receive the input current of the power supply through the input terminal, and to perform shunt processing on the input current so as to supply power to the print head through the first output terminal and to supply power to the printer system through the second output terminal.

[0013] In some embodiments, the power transfer board is provided with a filtering and voltage regulation circuit. When powering the print head through the first output terminal, the power transfer board is used to filter and regulate the output current of the first output terminal through the filtering and voltage regulation circuit to achieve voltage regulation compensation for the print head.

[0014] In some embodiments, the filtering and voltage regulation circuit includes a filtering and voltage regulation capacitor. When the logic signal is acquired, the power transfer board is used to connect the filtering and voltage regulation capacitor to the power supply circuit between the first output terminal and the print head.

[0015] In some embodiments, a pre-charging circuit is provided on the power transfer board. The pre-charging circuit is connected to the filter and voltage stabilizing capacitor. The pre-charging circuit is used to start before the printhead is powered on, and after receiving the pre-charging signal sent by the printer system, it charges the multiple filter and voltage stabilizing capacitors.

[0016] In some embodiments, the printer system is provided with a printhead voltage detection circuit for obtaining the power supply voltage corresponding to the printhead; the printer system is also used to adjust the heating parameters of the printhead when the fluctuation range of the power supply voltage exceeds a second reference voltage value.

[0017] To achieve the above objectives, a second aspect of the present invention provides a power supply control method for a film printer. The method is applied to a film printer power supply system, the system comprising: a power supply; a power transfer board with an input terminal connected to the power supply; a printhead connected to a first output terminal of the power transfer board; and a printer system connected to a communication terminal of the power transfer board. The method comprises: when the power transfer board receives a logic signal sent by the printer system through the communication terminal, controlling the power transfer board to perform voltage regulation compensation on the printhead.

[0018] To achieve the above objectives, a third aspect of the present invention provides an electronic device, the electronic device including a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the method described in the second aspect above.

[0019] To achieve the above objectives, a fourth aspect of the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the method described in the second aspect.

[0020] The film printer power supply system, control method, device, and medium proposed in this invention have at least the following effects: This application adds a power transfer board to the film printer power supply system. The power transfer board controls the power supply to the print head. The power transfer board can receive logic signals from the printer system and control them to perform voltage stabilization and compensation on the power supply current to the print head when the print head is in a high-power state. This stabilizes the print head voltage, provides more stable heat-generating hardware support for the printer, improves print quality, and produces better print images. Furthermore, the power transfer board can divert power, preventing the print head and other system components from drawing power from the same power branch, thus reducing the possibility of power interference. This effectively solves the problem of power voltage jumps, ensuring that the print head voltage does not drop too much during high-power operation and preventing the printed colors from becoming lighter. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a film printer power supply system provided in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the switching transistor in a filter and voltage regulator circuit provided in another embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the filter and voltage regulator capacitor in a filter and voltage regulator circuit provided in another embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of a pre-charging circuit provided in another embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of a printhead voltage detection circuit provided in another embodiment of the present invention;

[0026] Figure 6 This is an uncompensated printhead voltage waveform diagram provided in another embodiment of the present invention;

[0027] Figure 7 This is a printhead voltage waveform diagram after using a compensation circuit, provided in another embodiment of the present invention.

[0028] Figure 8 This is a schematic diagram of the hardware structure of the electronic device provided in an embodiment of the present invention. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0030] It should be noted that although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing embodiments of the invention only and is not intended to limit the invention.

[0032] In recent years, in traditional film printing systems, the power supply for the print head is usually directly from a general power source, which leads to the following problems: First, when the print head is operating at high power, voltage instability may cause changes in the printed texture, such as lighter colors. Second, if other parts of the system are also using the same power source, electrical interference may occur, further reducing print quality and stability.

[0033] Based on this, embodiments of the present invention provide a power supply system, control method, device and medium for a film printer, aiming to solve the technical problem in the prior art where the power supply directly supplies power to the print head, resulting in unstable voltage when the print head is in a high-power working state.

[0034] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0035] Please see Figure 1 , Figure 1 This is a schematic diagram of a film printer power supply system provided in an embodiment of the present invention. The first aspect of the present invention provides a film printer power supply system, the system comprising: a power supply; a power transfer board with its input terminal connected to the power supply; a print head connected to a first output terminal of the power transfer board; and a printer system connected to a communication terminal of the power transfer board; wherein the power transfer board is used to perform voltage regulation compensation on the print head when it receives a logic signal sent by the printer system through the communication terminal.

[0036] In some embodiments, this application adds a power transfer board to the film printer's power supply system to control the power supply to the print head. The power transfer board can receive logic signals from the printer system and control them to perform voltage stabilization and compensation on the print head's power supply current when the print head is in a high-power state. This stabilizes the print head voltage, provides more stable heat-generating hardware support for the printer, improves print quality, and produces better print images. Furthermore, the power transfer board can divert power, preventing the print head and other system components from drawing power from the same power branch, thus reducing the possibility of power interference. This effectively solves the problem of power voltage jumps, ensuring that the print head voltage does not drop too much during high-power operation, thereby avoiding the occurrence of light-colored prints.

[0037] In some embodiments, the printer system is used to obtain the power supply voltage corresponding to the printhead and send a logic signal to the power transfer board when the power supply voltage is greater than or equal to a first reference voltage value. In this embodiment, the printer system can monitor the power supply voltage of the printhead and send a logic signal to the power transfer board when the voltage reaches or exceeds the set first reference voltage value, thereby responding to voltage changes in a timely manner, performing necessary voltage stabilization compensation, maintaining the voltage stability of the printhead, and ensuring the stability and consistency of print quality under high-power operating conditions.

[0038] In some embodiments, the printer system is connected to the second output terminal of the power transfer board. The power transfer board is also used to receive the input current from the power supply through the input terminal, and to shunt the input current to power the print head through the first output terminal and the printer system through the second output terminal. In this embodiment, the power transfer board not only provides power to the print head, but also powers the printer system through the second output terminal. By shunting the input current, the power interference between the print head and the printer system is effectively reduced, improving the stability and reliability of the entire system. This shunt design also helps to optimize the overall power efficiency and ensure that each component receives a suitable current supply. Specifically, the power transfer board can be placed near the print head, that is, the power transfer board can be installed as close to the print head as possible to minimize the distance between the power transfer board and the print head, shorten the return path, and obtain a better voltage regulation effect.

[0039] In some embodiments, the power transfer board is provided with a filtering and voltage regulation circuit. When powering the print head through the first output terminal, the power transfer board is used to filter and regulate the output current of the first output terminal through the filtering and voltage regulation circuit to achieve voltage regulation compensation for the print head. In this embodiment, the power transfer board includes a filtering and voltage regulation circuit for filtering and regulating the current supplied to the print head through the first output terminal. This can improve the quality of power supply to the print head, eliminate noise and fluctuations in the current, and thus ensure that the print head can obtain a stable and high-quality power supply under various operating conditions. This helps to improve print quality in high-resolution and high-speed printing applications.

[0040] In some embodiments, the filtering and voltage regulation circuit includes a filtering and voltage regulation capacitor. When a logic signal is acquired, the power supply relay board is used to connect the filtering and voltage regulation capacitor to the power supply circuit between the first output terminal and the print head.

[0041] In some embodiments, the filtering and voltage regulation circuit includes one or more switching transistors. Specifically, multiple switching transistors may be connected to multiple parallel filtering and voltage regulation capacitors. When a logic signal is received, the power transfer board controls the multiple switching transistors to conduct, so that the multiple filtering and voltage regulation capacitors are connected to the power supply circuit between the first output terminal and the printhead. In this embodiment, the filtering and voltage regulation circuit includes multiple switching transistors and multiple parallel filtering and voltage regulation capacitors. When a logic signal sent by the printer system is received, the power transfer board controls the switching transistors to conduct, thereby connecting the filtering and voltage regulation capacitors to the printhead power supply circuit. This configuration allows the capacitors to be quickly connected to the circuit when needed, providing additional filtering and voltage regulation functions, thereby ensuring that the printhead receives a stable power supply under different printing conditions and maintaining high-quality print output.

[0042] In some embodiments, please refer to Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of the switching transistor in a filter and voltage regulator circuit provided in another embodiment of the present invention; Figure 3 This is a schematic diagram of the filter and voltage regulator capacitor in a filter and voltage regulator circuit provided in another embodiment of the present invention; Figure 2 It consists of three branches, each of which includes, in sequence, an input resistor R15 / R16 / R17, a grounding capacitor C29 / C28 / C27, a tri-state gate Q1 / Q2 / Q6, a first voltage divider resistor R1 / R3 / R11, a second voltage divider resistor R2 / R4 / R12, and a switching transistor U1 / U2 / U6 including a MOSFET D3. The two ends of the switching transistor U1 / U2 / U6 are connected to +24V and H24V, respectively. Figure 3The circuit includes C1 / C2 connected to +24V, C7 / C8 connected to +24V, C3 / C4 / C5 connected to H24V, and C9 / C10 / C11 connected to H24V. The logic signal PrnHead_Ctr can control the switching transistors U1 / U2 / U6 to turn on, thereby enabling... Figure 3 The parallel filtering and voltage-regulating capacitors C1 / C2 / C7 / C8 corresponding to the +24V terminal are normally connected to the printhead power supply circuit to ensure normal circuit operation. The parallel filtering and voltage-regulating capacitors C3 / C4 / C5 / C9 / C10 / C11 corresponding to the H24V terminal are connected to the printhead power supply circuit during return current compensation to provide additional filtering and voltage regulation functions, reduce printhead voltage fluctuations, and thus improve print quality and stability. It is conceivable that the above circuit is only an exemplary illustration in this application, and the specific connection method can be referred to Figure 2 or Figure 3 Connection method in the middle.

[0043] In some embodiments, a pre-charging circuit is provided on the power transfer board. The pre-charging circuit is connected to multiple filter and voltage-stabilizing capacitors. The pre-charging circuit is activated before the printhead is powered on. After receiving the pre-charging signal sent by the printer system, it uses multiple thermistors to restore the current through the fuse and pre-charges the filter and voltage-stabilizing capacitors. In this embodiment, the power transfer board includes a pre-charging circuit that is activated before the printhead is powered on. After receiving the pre-charging signal sent by the printer system, it uses thermistors to restore the current through the fuse and pre-charges the filter and voltage-stabilizing capacitors. This ensures that the filter and voltage-stabilizing capacitors are fully charged before the printhead starts working, thereby providing a stable power supply immediately when the printhead starts printing. It also effectively prevents current surges caused by the charging of multiple capacitors, thus avoiding print quality problems caused by unstable power supply in the early stages of printing.

[0044] In some embodiments, please refer to Figure 4 , Figure 4 This is a schematic diagram of a pre-charging circuit provided in another embodiment of the present invention; Figure 4Including the input resistor 18, grounding capacitor C26, tri-state gate Q3, first voltage divider resistor R5, second voltage divider resistor R6, switching transistor U3, thermistors F1 / F2 / F3, and output resistor R22 connected in sequence, it can be seen that, in order to prevent current surges caused by the charging of multiple capacitors, before the PrnHead_Ctr signal controls U1 / U2 / U6 to conduct, the PHPREC_Ctr signal is first turned on to control U3 to conduct. F1 / F2 / F3 can then restore the fuse current limiting, allowing capacitors C3 / C4 / C5 / C9 / C10 / C11 to charge slowly. Then, the PrnHead_Ctr signal is turned on to directly conduct +24V to the H24V circuit for normal operation. During normal operation, the PHPREC_Ctr signal branch can be turned off, ready to be turned on again before the next power-on. Here, the PrnHead_Ctr signal corresponds to the logic signal in this application, the PHPREC_Ctr signal corresponds to the pre-charge signal in this application, capacitors C3 / C4 / C5 / C9 / C10 / C11 correspond to multiple filter and voltage-regulating capacitors in this application, F1 / F2 / F3 correspond to multiple thermistors in this application, U1 / U2 / U6 correspond to multiple switching transistors included in the filter and voltage-regulating circuit, and U3 corresponds to the switching transistor included in the pre-charge circuit. It should be understood that the above circuit is merely an exemplary illustration in this application; the specific connection method can be found in [reference needed]. Figure 4 Connection method in the middle.

[0045] The pre-charging circuit described above is designed to control U3 to conduct before the printhead starts working normally. Current is limited by F1 / F2 / F3 (thermometers), allowing the capacitor bank (C3 / C4 / C5 / C9 / C10 / C11) to charge slowly. This gradual charging method prevents current surges caused by multiple capacitors charging rapidly at the same time, thus protecting the circuit. After the capacitors are fully charged, the +24V is directly connected to the H24V circuit via the PrnHead_Ctr signal, initiating normal printing. When printing is not needed, the PHPREC_Ctr signal can be turned off for future use.

[0046] In some embodiments, the printer system includes a printhead voltage detection circuit that returns via the printhead line to obtain the power supply voltage corresponding to the printhead. The printer system is also used to adjust the heating parameters of the printhead when the fluctuation range of the power supply voltage exceeds a second reference voltage value. In this embodiment, the printer system includes a printhead voltage detection circuit that returns via the printhead line to monitor the power supply voltage of the printhead in real time. The printer system can also adjust the heating parameters of the printhead when the power supply voltage fluctuation exceeds the second reference voltage value. The beneficial effect of this adaptive adjustment mechanism is that it can adjust the working state of the printhead based on real-time voltage data to cope with voltage fluctuations, maintain the stable operation of the printhead, and help maintain consistent printing quality under different power conditions, thereby reducing printing errors caused by voltage fluctuations.

[0047] In some embodiments, please refer to Figure 5 , Figure 5 This is a schematic diagram of a printhead voltage detection circuit provided in another embodiment of the present invention; Figure 5 The circuit includes, in sequence, voltage divider resistors R446 / R447, transient absorber D22, grounding capacitors C498 / C497 / C493, input resistors R442 / R445, ADC circuit U39A, output resistor R448, and grounding capacitor C496. The printhead voltage detection circuit can scale the voltage using voltage divider resistors R446 / R447, and the ADC circuit U39A monitors the filtered signal 24V_DET, feeding it back to the printer system motherboard via the printhead line as a 24VP signal. This allows the printer system motherboard to obtain the corresponding power supply voltage for the printhead based on the 24VP signal. Furthermore, if the detected voltage fluctuation exceeds the reference voltage value, printing matching can be achieved by adjusting the heating parameters. It is conceivable that the above circuit is merely an exemplary illustration in this application; the specific connection method can be found in [reference needed]. Figure 5 Connection method in the middle.

[0048] Please see Figure 6 and Figure 7 , Figure 6 This is an uncompensated printhead voltage waveform diagram provided in another embodiment of the present invention; Figure 7 This is a printhead voltage waveform diagram after using a compensation circuit according to another embodiment of the present invention. It can be seen that the filter voltage stabilization circuit in this application can effectively reduce printhead voltage fluctuations. It is conceivable that, since the heating principle of the thermal printhead is W = U t / R, where R is the inherent resistance characteristic, t is the heating control time, and U is the power supply voltage, when this application makes U stable, the printhead and the corresponding printing machine can obtain more stable heating hardware support, obtain better printing images, and thus improve the voltage jump of the printhead power supply, avoiding the situation where the voltage suddenly drops a lot during high-power operation, resulting in lighter printing colors.

[0049] Secondly, in some embodiments, this application provides a power supply control method for a film printer. The method is applied to a film printer power supply system, the system including: a power supply; a power transfer board with an input terminal connected to the power supply; a printhead connected to a first output terminal of the power transfer board; and a printer system connected to a communication terminal of the power transfer board. The method includes: when the power transfer board receives a logic signal sent by the printer system through the communication terminal, controlling the power transfer board to perform voltage regulation compensation on the printhead.

[0050] Please see Figure 8 , Figure 8 The hardware structure of an electronic device according to another embodiment is illustrated. The electronic device includes: a processor 801, which can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, for executing related programs to implement the technical solutions provided in the embodiments of the present invention; and a memory 802, which can be implemented using a read-only memory (ROM), static storage device, dynamic storage device, or random access memory (RAM), etc. The memory 802 can store the operating system and other applications. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory 802 and is called and executed by the processor 801 to implement the film printer power supply control method of the embodiments of this invention. The input / output interface 803 is used to realize information input and output. The communication interface 804 is used to realize communication interaction between this device and other devices. Communication can be realized through wired means (such as USB, network cable, etc.) or through wireless means (such as mobile network, WIFI, Bluetooth, etc.). The bus 805 transmits information between the various components of the device (such as the processor 801, memory 802, input / output interface 803 and communication interface 804). The processor 801, memory 802, input / output interface 803 and communication interface 804 realize communication connection between each other within the device through the bus 805.

[0051] Fourthly, embodiments of the present invention also provide a computer-readable storage medium storing one or more programs, which can be executed by one or more processors to implement the above-described power supply control method for film printers.

[0052] Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory may optionally include memory remotely located relative to the processor, and these remote memories can be connected to the processor via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0053] The embodiments described in this invention are for the purpose of more clearly illustrating the technical solutions of the embodiments of this invention, and do not constitute a limitation on the technical solutions provided by the embodiments of this invention. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of this invention are also applicable to similar technical problems.

[0054] It will be understood by those skilled in the art that Figures 1 to 8 The technical solutions shown do not constitute a limitation on the embodiments of the present invention. They may include more or fewer components than those shown, or combine certain components, or different components.

[0055] The terms "first," "second," "third," "fourth," etc. (if present) in the specification and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0056] It will be understood by those skilled in the art that all or some of the steps in the methods disclosed above, and the corresponding systems, can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include computer-readable storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer-readable storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer-readable storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0057] The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present invention. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and spirit of the present invention should be within the scope of the claims of the present invention.

Claims

1. A power supply system for a film printer, characterized in that, The system includes: power supply; A power transfer board has its input terminal connected to the power supply. The power transfer board is equipped with a filtering and voltage regulation circuit, which includes a filtering and voltage regulation capacitor. The printhead is connected to the first output terminal of the power transfer board; The printer system is connected to the communication terminal of the power relay board and to the second output terminal of the power relay board. The printer system is used to obtain the power supply voltage corresponding to the print head and send a logic signal to the power relay board when the power supply voltage is greater than or equal to a first reference voltage value. The printer system is provided with a print head voltage detection circuit for obtaining the power supply voltage corresponding to the print head. The printer system is also used to adjust the heating parameters of the print head when the fluctuation range of the power supply voltage exceeds the second reference voltage value. The power relay board is used to perform voltage stabilization compensation on the print head when it receives the logic signal sent by the printer system through the communication terminal. The power transfer board is also used to receive the input current of the power supply through the input terminal, and to perform shunt processing on the input current so as to supply power to the print head through the first output terminal and to supply power to the printer system through the second output terminal. When powering the printhead through the first output terminal, the power transfer board is used to filter and regulate the output current of the first output terminal through the filter and voltage regulation circuit to achieve voltage regulation compensation for the printhead. When the logic signal is received, the power transfer board is used to connect the filter and voltage regulator capacitor to the power supply circuit between the first output terminal and the print head.

2. The film printer power supply system according to claim 1, characterized in that, The power transfer board is equipped with a pre-charging circuit, which is connected to the filter and voltage regulator capacitor. The pre-charging circuit is used to start before the print head is powered on, and after receiving the pre-charging signal sent by the printer system, it charges the multiple filter and voltage regulator capacitors.

3. A power supply control method for a film printer, characterized in that, The method is applied to the film printer power supply system as described in claim 1 or 2, the system comprising: a power supply; a power relay board with its input terminal connected to the power supply; a printhead connected to a first output terminal of the power relay board; and a printer system connected to a communication terminal of the power relay board, the method comprising: When the power relay board receives the logic signal sent by the printer system through the communication terminal, it controls the power relay board to perform voltage stabilization compensation on the print head.

4. An electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the film printer power supply control method as described in claim 3.

5. A computer-readable storage medium, characterized in that, The device contains a computer program that, when executed by a processor, implements the film printer power supply control method as described in claim 3.

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