An adaptive thickness self-flattening printer and control method

Abstract

The application provides a self-adaptive thickness self-flattening printer and a control method, which are applied to the technical field of printing and include a medium detection module, a medium identification module, a central control module, a flattening control module and a printing execution module. The medium detection module includes a thickness detection unit, a warping detection unit and a feature detection unit, which are used to collect medium thickness information, warping conditions and classification feature information and transmit the information to the central control module. The medium identification module is used to identify and classify the medium and transmit the results to the central control module. The central control module is used to form a warping distribution map, a flattening control strategy and a printing control strategy. The flattening control module includes a flattening assembly and a linear execution mechanism. The linear execution mechanism controls the lifting and lowering actions of each pressing head in the vertical direction in different regions. The different thicknesses of the printing medium can be automatically identified, and the flattening-printing control strategy can be automatically adjusted based on the identification results, so that the medium is automatically flattened and high-quality printing is realized.

Description

Technical Field

[0001] This invention belongs to the field of printing technology, specifically relating to an adaptive thickness self-flattening printer and its control method. Background Technology

[0002] With the continuous development of digital printing technology, printing equipment is widely used in office printing, industrial manufacturing, labeling and document processing, logistics packaging and other fields. The types of media used in modern printing scenarios are becoming increasingly diverse, including not only ordinary paper, coated paper, PET film, and card stock, but also complex media with different thicknesses and surface properties, such as release label paper, composite materials, and coated materials.

[0003] Traditional printing equipment typically uses mechanical or fixed-position paper clamping components, which can only be adapted to different paper thicknesses through manual or simple mechanical adjustments. This makes it impossible to achieve dynamic adjustment for non-standard media or warped paper. In addition, most existing flattening controls apply uniform pressure across the entire width, which cannot handle local undulations, wrinkles, or irregular adhesion of paper, easily causing problems such as blurry printing, ink splatter, broken lines, or nozzle clogging.

[0004] Therefore, there is an urgent need for a collaborative printing system with multi-dimensional perception, intelligent recognition, and regional flattening control to improve the adaptability of the printing process, output stability, and the intelligent evolution capability of the overall system, so as to meet the printing application requirements of complex media, multiple working conditions, and high quality. Summary of the Invention

[0005] In view of the above-mentioned problems in the prior art, the purpose of the present invention is to provide an adaptive thickness self-flattening printer that can automatically identify printing media of different thicknesses and automatically adjust the flattening-printing control strategy based on the identification results, thereby achieving automatic media flattening and high-quality printing.

[0006] An adaptive thickness self-flattening printer, comprising: The media detection module includes a thickness detection unit, a warpage detection unit, and a feature detection unit. The thickness detection unit is used to detect the thickness of the media, the warpage detection unit is used to detect the warpage of the media, and the feature detection unit is used to collect the classification feature information of the media. The media thickness information, warpage information, and classification feature information are transmitted to the central control module. The media identification module includes a data preprocessing unit and a media classification model. The data preprocessing unit is used to preprocess the acquired information; the media classification model is used to classify and identify the acquired information based on the processed information; the classification and identification results are transmitted to the central control module. The central control module is used to determine whether there are any abnormalities in the current medium based on the medium thickness information and warping, and to generate a warping distribution map. This generates a matching flattening control strategy to drive the flattening control module to perform flattening actions in different areas. It is also used to generate a matching printing control strategy based on the classification and identification results to drive the printing execution module to perform printing actions. The flattening control module includes a flattening component and a linear actuator. The flattening component includes a miniature pressure head array, and the linear actuator is connected to the miniature pressure head array. It is driven by the central control module to control each pressure head of the miniature pressure head array to perform regional lifting and lowering movements in the vertical direction.

[0007] Preferably, the thickness detection unit includes a thickness sensor and an auxiliary thickness sensor. The thickness sensor is used to detect the center thickness of the medium; the auxiliary thickness sensor is used to obtain the thickness or curvature difference of the edge region of the medium, so as to realize error compensation for thickness detection and preliminary identification of warpage.

[0008] Preferably, the warpage detection unit includes a reflective laser displacement sensor array arranged along the width of the medium, used to detect the height data of the medium surface as the medium moves through.

[0009] Preferably, the classification feature information of the medium includes capacitance, color, and reflectivity, and the feature detection unit includes a capacitive proximity sensor, an RGB color sensor, and a reflective optical sensor.

[0010] Preferably, the flattening control module further includes a pressure sensor and a displacement encoder. The pressure sensor is used to detect the contact resistance between the pressure head and the medium in real time and feed it back to the central control module. The displacement encoder is used to record the deviation between the actual displacement of the pressure head and the target displacement and feed it back to the central control module.

[0011] Preferably, the printing execution module includes a printhead interface, a power supply unit, and an output control unit. The printhead interface is provided with multiple printhead interfaces, each of which is connected to a thermal inkjet printhead. The power supply unit is used to provide a controlled pulse voltage to drive the nozzle heating element to form bubbles to achieve ink droplet ejection. The output control unit is used to receive a "print enable" signal sent by the central control module and only drives the power supply unit to enable after the "flattening complete" signal is confirmed.

[0012] Another objective of this invention is to provide a control method for an adaptive thickness self-flattening printer, which includes a media detection module, a media identification module, a central control module, a flattening control module, and a printing execution module. The control method for an adaptive thickness self-flattening printer includes the following steps: S1. The central control module receives the thickness value, warpage and classification feature information of the medium obtained by the medium detection module, and determines whether there are any abnormalities in the medium and generates a warpage distribution map. S2. The central control module transmits the received media information to the media identification module, enabling the media identification module to classify and identify the media, and receive the classification and identification results. S3. The central control module generates a matching flattening control strategy based on the generated warp distribution map, which drives the flattening control module to perform the corresponding flattening action. S4. The central control module generates a matching printing control strategy based on the classification and recognition results, which drives the printing execution module to perform the corresponding printing actions. The process by which the media detection module acquires the thickness value, warpage, and classification feature information of the media specifically includes the following steps: S1.1 Collect the center thickness value and the edge thickness value of the medium; S1.2. While detecting the thickness value of the medium, collect the classification characteristic information of the medium, including capacitance, color, and reflectivity. S1.3 When the medium moves through, the height of the medium surface is continuously detected at a fixed frequency by a reflective laser displacement sensor array to obtain two-dimensional height distribution data.

[0013] Preferably, the process of media classification and identification by the media identification module specifically includes the following steps: S2.1 Normalize, filter noise, and standardize the collected medium information; the medium information includes the thickness value, warpage, and classification feature information of the medium; S2.2 Classify and identify the processed media information and output the media category.

[0014] Preferably, the flattening control module includes a flattening component, a linear actuator, a pressure sensor, and a displacement encoder. The specific process of the flattening control module performing the corresponding flattening action is as follows: S3.1 After receiving the flattening control strategy transmitted by the central control module, the flattening control module controls the linear actuator to drive the miniature pressure head in the corresponding area to perform a pressing action based on the area coordinates and intensity information output by the central control module. S3.2 During the pressing process of the miniature pressure head, the pressure sensor data is read in real time, and the pressure value is compared with the set pressure range value according to the intensity information output by the central control module. If the pressure value is lower or higher than the set pressure range value, the linear actuator action is automatically adjusted or the pressing action is stopped and an alarm is triggered. S3.3 During the pressing process of the miniature indenter, the deviation between the actual displacement of the indenter and the target displacement is recorded in real time by the displacement encoder and fed back to the central control module; S3.4 After the flattening action is completed, send a "flattening completed" signal to the central control module.

[0015] Preferably, the printing execution module includes a printhead interface, a power supply unit, an output control unit, and a monitoring unit. The specific process by which the printing execution module performs the corresponding printing action is as follows: S4.1 The output control unit of the printing execution module receives the "print enable" signal sent by the central control module and only drives the power supply unit to enable after the "flattening complete" signal is confirmed. S4.2 After the power supply unit responds, it outputs a controlled pulse voltage to drive the nozzle heating element to form bubbles, so that the thermally foaming inkjet printhead connected to the printhead interface can eject ink droplets. S4.3 During the inkjet process, the monitoring unit monitors the working status of each channel in real time and feeds back the monitoring results to the central control module to determine whether there is any abnormality or aging of the printhead; the monitoring content includes nozzle heating current, voltage fluctuation, and open circuit or overheating of the printhead.

[0016] The beneficial effects of this invention are: 1. Achieve multi-dimensional media recognition and accurate classification: Integrate multiple sensor signals such as thickness, capacitance, and reflectivity, and perform feature extraction and media classification through a convolutional neural network model, significantly improving the accuracy and generalization ability of recognizing complex media such as heterogeneous paper, composite labels, and high-gloss coatings.

[0017] 2. Construct an error-compensated thickness detection architecture to improve detection accuracy: By using a combination of thickness sensor and auxiliary thickness sensor, the thickness of the center and edge areas of the medium is collected, which can accurately determine whether there is thickness abnormality or multi-layer overlap in the medium, effectively improving the stability and reliability of the identification data.

[0018] 3. Achieve intelligent flattening control in different areas: Introduce a multi-point warp detection and micro-pressure head array control mechanism, and schedule local pressure heads according to the distribution of warp areas and media type to perform multi-area differentiated flattening actions. It is particularly suitable for dealing with complex working conditions such as irregular, warped, adhered edges or flexible substrates, and ensures the flatness of the printed area.

[0019] 4. Achieve high linkage between printing action and flattening state: Through real-time confirmation of the flattening state by the central control module, the printing execution module is controlled to start the inkjet action only after the media is stably bonded, avoiding problems such as ink splatter, trailing or nozzle contamination, and ensuring the accuracy and stability of the inkjet output position.

[0020] 5. Supports intelligent multi-head drive and status feedback: The printing execution module supports dual-head or multi-head structures and has the ability to monitor current, voltage and temperature in real time and identify abnormalities. When printhead aging, blockage or abnormal temperature control is detected, it can automatically switch to backup channels or adjust excitation parameters to ensure stable operation of continuous tasks.

[0021] 6. Forming a multi-module data coupling and system closed-loop control architecture: Through a series of closed loops of thickness detection, identification and classification, flattening scheduling, printing control and feedback optimization, an intelligent printing system integrating multimodal perception, intelligent identification, execution control and self-evolution is constructed, which has excellent scalability, adaptability and long-term system maintenance efficiency. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a system block diagram of the present invention; Figure 2 This is a schematic diagram of the printer printing channel of the present invention; Figure 3 This is a circuit diagram of the power supply unit of the present invention; Figure 4 This is a circuit diagram of the nozzle interface of the present invention; Figure 5 This is a flowchart of the method of the present invention.

[0023] The following are labeled in the diagram: 1. Thickness sensor; 2. Auxiliary thickness sensor; 3. Warpage detection unit; 4. Flattening control module. Detailed Implementation

[0024] Example 1 like Figure 1 As shown, an adaptive thickness self-flattening printer includes a media detection module, a media identification module, a flattening control module 4, a printing execution module, and a central control module. The central control module is communicatively connected to the media detection module, the media identification module, the flattening control module 4, and the printing execution module.

[0025] The media detection module includes a thickness detection unit, a warpage detection unit 3, and a feature detection unit. The media detection module uses the thickness detection unit to detect the thickness of the media, the warpage detection unit 3 to detect the warpage of the media, and the feature detection unit to collect the classification feature information of the media. It then transmits the media thickness information, warpage information, and classification feature information to the central control module.

[0026] The central control module integrates the thickness data and surface height data of the medium to determine whether there are abnormal states such as warping, bending, cornering or multi-layer overlap in the current medium and generates a warping distribution map, which is used to generate a matching flattening control strategy to guide the flattening control module 4 to perform flattening actions in different regions.

[0027] Specifically, such as Figure 2 As shown, the thickness detection unit includes upper and lower thickness sensors 1, and an auxiliary thickness sensor 2. The upper and lower thickness sensors 1 are respectively installed on the upper and lower surfaces of the paper feed channel, and the center thickness of the medium is detected by laser ranging or micro-displacement sensor.

[0028] The auxiliary thickness sensor 2 is arranged on the left and right sides or obliquely symmetrically on the thickness sensor 1 to obtain the thickness or curvature difference of the medium edge area, so as to realize error compensation and preliminary warping identification of thickness detection.

[0029] The warpage detection unit 3 includes an array of reflective laser displacement sensors arranged along the width of the medium and mounted above the paper feed path. For example... Figure 2 As shown in the figure, the arrow indicates the direction of medium movement. When the medium moves through, the reflective laser displacement sensor array continuously detects the surface height of the medium through the light spot reflection signal, realizing the scanning and identification of abnormal states such as warping, bulging, and local protrusions on the medium surface, and obtaining medium surface height data.

[0030] The feature detection unit includes various sensors for collecting classification feature information of the medium. The classification feature information of the medium includes capacitance, color, and reflectivity; correspondingly, the feature detection unit includes capacitive proximity sensors, RGB color sensors, and reflective optical sensors. It should be noted that the type and number of sensors can be adjusted according to specific usage requirements, with the aim of collecting sufficient classification feature information for medium classification and identification.

[0031] The media identification module includes a data preprocessing unit and a media classification model. The data preprocessing unit normalizes the media classification feature information, such as media thickness, capacitance, color, and reflectivity, collected by the media detection module. The media classification model uses a convolutional neural network (CNN) to classify and identify the media based on the processed media classification feature information, and transmits the classification results to the central control module.

[0032] Based on the classification and identification results from the media identification module, the central control module generates a matching printing control strategy to guide the printing execution module in performing printing actions.

[0033] Based on the multidimensional data provided by various sensors in the media detection module, the media identification module no longer relies on a single dimension when classifying media, which improves the response capability and judgment robustness under different working conditions. At the same time, it is beneficial for the central control module to generate or call more suitable printing control strategies, thereby improving the printing effect.

[0034] Furthermore, the media recognition module includes a training interface and a self-learning unit, allowing users to optimize the model locally or update it in the cloud using new sample datasets. In addition, the historical distribution of thickness data can be used to dynamically adjust the model's weights, improving the media recognition module's ability to recognize complex situations such as non-standard paper, multi-layered media, and composite materials.

[0035] like Figure 2 As shown, the flattening control module 4 includes a flattening component, a linear actuator, a pressure sensor, and a displacement encoder. The flattening component includes a miniature pressure head array, composed of multiple distributed miniature pressure head arrays. The linear actuator is connected to the miniature pressure head array and is driven by the central control module to control the vertical lifting and lowering of each pressure head in designated areas, supporting precise control of the set stroke.

[0036] The pressure sensor is used to detect the contact resistance between the pressure head and the medium in real time and feed it back to the central control module to realize pressure monitoring and feedback closed-loop regulation, which is conducive to the self-learning of the central control module to generate pressure flattening control strategy.

[0037] The displacement encoder is used to record the deviation between the actual displacement of the pressure head and the target displacement, and to help identify whether the flattening component has experienced displacement jamming or flattening failure.

[0038] Furthermore, the flattening control module 4 communicates with the historical database, enabling it to dynamically adjust the pressure curve of the pressure head based on parameters such as different materials, paper thickness, and warping, and possessing self-learning and pressure optimization capabilities. The historical database is stored and updated in real-time by a built-in storage unit.

[0039] The flattening control module 4 works in conjunction with the media detection module and the media identification module to achieve a high degree of data fusion and logical coupling. Based on the results of the media detection module and the media identification module, the corresponding flattening control strategy is matched to achieve fine flattening control of multiple types and different characteristics of media, ensuring the fit and clarity of the printing process.

[0040] The printing execution module includes multiple printhead interfaces, a power supply unit, an output control unit, and a monitoring unit.

[0041] The printhead interface is used to connect to the thermal inkjet printhead; the power supply unit is used to provide a controlled pulse voltage to drive the nozzle heating element to form bubbles and achieve ink droplet ejection; the output control unit is used to receive the "print enable" signal sent by the central control module, and only drives the power supply unit to enable after the "flattening complete" signal is confirmed, to prevent the printhead from ejecting ink prematurely when the paper is not flattened; after the power supply unit is enabled, the printhead interface activates the inkjet logic to complete synchronous inkjet output, and supports multi-printhead linkage or alternating inkjet strategies.

[0042] Specifically, the circuit structure of the power supply unit is as follows: Figure 3 As shown, the power supply unit includes a power chip U1 and peripheral circuitry. Through the coordination between the power chip U1 and the peripheral circuitry, the output signal V_OUT1 drives the thermal inkjet printhead via the printhead interface. The circuit structure of the printhead interface is as follows: Figure 4 As shown, multiple printhead interfaces can be provided to enable simultaneous inkjet printing by multiple printheads or alternating inkjet printing by multiple printheads.

[0043] The monitoring unit is used to monitor the working status of each channel in the inkjet process in real time. The monitoring content includes: nozzle heating current, voltage fluctuation, and open circuit or overheating of the printhead. The monitoring unit feeds back the monitoring results to the central control module to determine whether there is any abnormality or aging of the printhead. If the abnormality exceeds the limit, the nozzle channel can be automatically switched, the inkjet parameters can be adjusted, or an alarm can be triggered.

[0044] It is important to note that the central control module dynamically adjusts the printhead heating current or inkjet timing window by combining thickness detection and warpage detection information to ensure clear and consistent inkjet printing under different thicknesses or bonding conditions, thus guaranteeing printing results.

[0045] Specifically, the printing execution module communicates with the print log library, which is recorded and saved by a built-in storage unit. Initially, the print log library stores inkjet strategies for various typical media. During actual use, the print log library continuously updates and optimizes the inkjet strategies for typical media and adds inkjet strategies for new media.

[0046] Example 2 like Figure 5 As shown, in a second aspect, the present invention provides a control method for an adaptive thickness self-flattening printer. The adaptive thickness self-flattening printer includes a media detection module, a media identification module, a flattening control module 4, a printing execution module, and a central control module. The central control module is communicatively connected to the media detection module, the media identification module, the flattening control module 4, and the printing execution module, respectively.

[0047] The control method for this adaptive thickness self-flattening printer specifically includes the following steps: S1. The media detection module performs thickness detection, warpage detection, and classification feature information acquisition on the media in the detection area, and transmits the acquired thickness values, warpage conditions, and classification feature information to the central control module. The specific process is as follows: S1.1 After the medium detection module detects that the medium is located in the detection area, the thickness sensor 1 and the auxiliary thickness sensor 2 are activated simultaneously. The thickness sensor 1 measures the center thickness value of the medium, and the auxiliary thickness sensor 2 measures the edge thickness value of the medium. The auxiliary thickness sensor 2 is used to realize error compensation for thickness detection and preliminary warping identification.

[0048] S1.2. While detecting the thickness of the medium, a capacitive proximity sensor, an RGB color sensor, and a reflective optical sensor are used to collect classification feature information such as capacitance, color, and reflectivity of the medium, respectively.

[0049] S1.3 When the medium moves through the reflective laser displacement sensor array, the reflective laser displacement sensor array continuously detects the height of the medium surface at a fixed frequency, realizing the scanning and identification of abnormal states such as warping, bulging, and local protrusions on the medium surface, and obtaining two-dimensional height distribution data.

[0050] S2. The media identification module processes and classifies media based on the media classification feature information collected by the media detection module, and transmits the classification results to the central control module. The specific process is as follows: S2.1 The data preprocessing unit of the media identification module receives the collected media information and normalizes, filters noise, and standardizes the raw information.

[0051] S2.2 The media classification model of the media identification module classifies and identifies media based on the processed media information and outputs the media category.

[0052] S3. The central control module generates a warping distribution map based on the information transmitted by the medium detection module, and generates a matching flattening control strategy by combining the medium classification results output by the medium identification module, driving the flattening control module 4 to execute the corresponding flattening action.

[0053] The specific process by which the flattening control module 4 executes the corresponding flattening action is as follows: S3.1 After receiving the flattening control strategy transmitted by the central control module, the flattening control module 4 controls the linear actuator to drive the miniature pressure head in the corresponding area to perform a pressing action based on the area coordinates and intensity information output by the central control module.

[0054] S3.2 During the pressing process of the miniature pressure head, the pressure sensor data is read in real time, and the pressure value is compared with the set pressure range value according to the intensity information output by the central control module. If the pressure value is lower or higher than the set pressure range value, the linear actuator action is automatically adjusted or the pressing action is stopped and an alarm is triggered.

[0055] S3.3 During the pressing process of the miniature pressure head, the deviation between the actual displacement of the pressure head and the target displacement is recorded in real time by the displacement encoder and fed back to the central control module.

[0056] S3.4 After the flattening action is completed, send a "flattening completed" signal to the central control module.

[0057] S4. After receiving the "flattening complete" signal, the central control module generates a corresponding printing control strategy based on the media identification type and drives the printing execution module to perform the printing action.

[0058] The specific process of the printing execution module performing the printing action is as follows: S4.1 The output control unit of the print execution module drives the power supply unit to work after receiving the "print enable" signal output by the central control module.

[0059] S4.2 After the power supply unit responds, it outputs a controlled pulse voltage to drive the nozzle heating element to form bubbles, so that the thermally foaming inkjet printhead connected to the printhead interface can eject ink droplets.

[0060] S4.3 During the inkjet printing process, the monitoring unit monitors the working status of each channel in real time and feeds the monitoring results back to the central control module to determine whether there are any abnormalities or aging in the printhead. If the abnormality exceeds the limit, the unit can automatically switch the nozzle channel, adjust the inkjet parameters, or issue an alarm. The monitoring content includes nozzle heating current, voltage fluctuations, and open circuit or overheating of the printhead.

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An adaptive thickness self-flattening printer, characterized in that, include: The media detection module includes a thickness detection unit, a warpage detection unit, and a feature detection unit. The thickness detection unit is used to detect the thickness of the media, the warpage detection unit is used to detect the warpage of the media, and the feature detection unit is used to collect the classification feature information of the media. The media thickness information, warpage information, and classification feature information are transmitted to the central control module. The media identification module includes a data preprocessing unit and a media classification model. The data preprocessing unit is used to preprocess the collected information. The media classification model is used to classify and identify the media based on the processed acquired information; the classification and identification results are transmitted to the central control module. The central control module is used to determine whether there are any abnormalities in the current medium based on the medium thickness information and warping conditions, and to generate a warping distribution map, thereby generating a matching flattening control strategy to drive the flattening control module to perform flattening actions in different areas. Used to generate matching print control strategies based on classification and recognition results to drive the print execution module to perform printing actions; The flattening control module includes a flattening component and a linear actuator. The flattening component includes a miniature pressure head array, and the linear actuator is connected to the miniature pressure head array. It is driven by the central control module to control each pressure head of the miniature pressure head array to perform regional lifting and lowering movements in the vertical direction.

2. The adaptive thickness self-flattening printer according to claim 1, characterized in that, The thickness detection unit includes a thickness sensor and an auxiliary thickness sensor, wherein the thickness sensor is used to detect the center thickness of the medium; The auxiliary thickness sensor is used to obtain the thickness or curvature difference in the edge region of the medium, so as to realize error compensation for thickness detection and preliminary identification of warpage.

3. The adaptive thickness self-flattening printer according to claim 1, characterized in that, The warpage detection unit includes a reflective laser displacement sensor array arranged along the width of the medium, used to detect the height data of the medium surface as the medium moves through it.

4. The adaptive thickness self-flattening printer according to claim 1, characterized in that, The classification characteristics of the medium include capacitance, color, and reflectivity. The feature detection unit includes a capacitive proximity sensor, an RGB color sensor, and a reflective optical sensor.

5. The adaptive thickness self-flattening printer according to claim 1, characterized in that, The flattening control module also includes a pressure sensor and a displacement encoder. The pressure sensor is used to detect the contact resistance between the pressure head and the medium in real time and feed it back to the central control module. The displacement encoder is used to record the deviation between the actual displacement of the pressure head and the target displacement, and feeds it back to the central control module.

6. The adaptive thickness self-flattening printer according to claim 1, characterized in that, The printing execution module includes a printhead interface, a power supply unit, and an output control unit. Multiple printhead interfaces are provided, and each printhead interface is connected to a thermal inkjet printhead. The power supply unit is used to provide a controlled pulse voltage to drive the nozzle heating element to form bubbles to achieve ink droplet ejection. The output control unit is used to receive the "print enable" signal sent by the central control module and only drives the power supply unit to enable after the "flattening complete" signal is confirmed.

7. A control method for an adaptive thickness self-flattening printer, characterized in that, For the adaptive thickness self-flattening printer as described in claim 3, the control method for the adaptive thickness self-flattening printer includes the following steps: S1. The central control module receives the thickness value, warpage and classification feature information of the medium obtained by the medium detection module, and determines whether there are any abnormalities in the medium and generates a warpage distribution map. S2. The central control module transmits the received media information to the media identification module, enabling the media identification module to classify and identify the media, and receive the classification and identification results. S3. The central control module generates a matching flattening control strategy based on the generated warp distribution map, which drives the flattening control module to perform the corresponding flattening action. S4. The central control module generates a matching printing control strategy based on the classification and recognition results, which drives the printing execution module to perform the corresponding printing actions. The process by which the media detection module acquires the thickness value, warpage, and classification feature information of the media specifically includes the following steps: S1.1 Collect the center thickness value and the edge thickness value of the medium; S1.

2. While detecting the thickness value of the medium, collect the classification characteristic information of the medium, including capacitance, color, and reflectivity. S1.3 When the medium moves through, the height of the medium surface is continuously detected at a fixed frequency by a reflective laser displacement sensor array to obtain two-dimensional height distribution data.

8. The control method for an adaptive thickness self-flattening printer according to claim 7, characterized in that, The media identification module classifies and identifies media in the following steps: S2.1 Normalize, filter noise, and standardize the collected medium information; the medium information includes the thickness value, warpage, and classification feature information of the medium; S2.2 Classify and identify the processed media information and output the media category.

9. The control method for an adaptive thickness self-flattening printer according to claim 7, characterized in that, The flattening control module also includes a pressure sensor and a displacement encoder. The specific process of the flattening control module performing the corresponding flattening action is as follows: S3.1 After receiving the flattening control strategy transmitted by the central control module, the flattening control module controls the linear actuator to drive the miniature pressure head in the corresponding area to perform a pressing action based on the area coordinates and intensity information output by the central control module. S3.2 During the pressing process of the miniature pressure head, the pressure sensor data is read in real time, and the pressure value is compared with the set pressure range value according to the intensity information output by the central control module. If the pressure value is lower or higher than the set pressure range value, the linear actuator action is automatically adjusted or the pressing action is stopped and an alarm is triggered. S3.3 During the pressing process of the miniature indenter, the deviation between the actual displacement of the indenter and the target displacement is recorded in real time by the displacement encoder and fed back to the central control module; S3.4 After the flattening action is completed, send a "flattening completed" signal to the central control module.

10. The control method for an adaptive thickness self-flattening printer according to claim 7, characterized in that, The printing execution module includes a printhead interface, a power supply unit, an output control unit, and a monitoring unit. The specific process by which the printing execution module performs the corresponding printing actions is as follows: S4.1 The output control unit of the printing execution module receives the "print enable" signal sent by the central control module and only drives the power supply unit to enable after the "flattening complete" signal is confirmed; S4.2 After the power supply unit responds, it outputs a controlled pulse voltage to drive the nozzle heating element to form bubbles, so that the thermally foaming inkjet printhead connected to the printhead interface can eject ink droplets. S4.3 During the inkjet process, the monitoring unit monitors the working status of each channel in real time and feeds back the monitoring results to the central control module to determine whether there is any abnormality or aging of the printhead; the monitoring content includes nozzle heating current, voltage fluctuation, printhead open circuit or overheating.

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