A method for adjusting the tension of printer paper

Abstract

The application provides a printer paper tension adjusting method, which comprises the following steps: firstly, initializing the paper tension placed in the printer; setting the paper tension range; adjusting the tension beyond the range; detecting the paper tension in real time during the printing process; calculating the deformation generated in the paper conveying process and feeding the calculation result back to the tension control unit; driving the traction motor to dynamically compensate the tension according to the paper tension change; detecting the offset of the printed paper; if no offset occurs, printing the next paper; if offset occurs, adjusting the offset through the offset detection assembly and preparing the next printed paper; through setting the initial tension of the traction motor, the application satisfies the middle value tension of the printer suitable paper, detects the tension change of the traction motor through the tension detection unit and feeds the detection data back to the tension control unit.

Description

Technical Field

[0001] This invention relates to a method for adjusting paper tension in a printer, and particularly to the field of paper tension adjustment technology. Background Technology

[0002] Changes in paper tension in a printer can affect the quality of printed paper. Printing defects often occur during the text printing process, including paper jams, tears, wrinkles, ink leakage, text tilting, and unclear printed text. For a single sheet of paper, manual inspection is usually used. However, when printing multiple sheets of paper, it is impossible to check the accuracy of the paper's printing position and whether the paper tension meets the paper's requirements one by one. Often, a large number of printed sheets need to be inspected. Traditional manual inspection methods have the disadvantages of being slow, inefficient, and costly. Therefore, it is impossible to detect and adjust the paper's printing status through printer inspection to ensure the accurate paper position during continuous printing. Summary of the Invention

[0003] Purpose of the invention: One purpose is to provide a paper tension adjustment method for printers to solve the aforementioned problems existing in the prior art.

[0004] Technical solution: A method for adjusting paper tension in a printer, comprising:

[0005] A method for adjusting paper tension in a printer, comprising:

[0006] Step 1: First, initialize the tension settings of the paper placed inside the printer;

[0007] Step two: Set the paper tension range and adjust any tension that exceeds the range;

[0008] Step 3: Real-time detection of paper tension during the printing process;

[0009] Step 4: Calculate the deformation generated during the paper feeding process and feed the calculation results back to the tension control unit;

[0010] Step 5: The tension control unit drives the traction motor to perform dynamic tension compensation based on changes in paper tension.

[0011] Step six: Perform offset detection on the printed paper. If no offset is found, print the next paper. If offset is found, adjust the offset using the offset detection component and prepare for the next paper to be printed.

[0012] In a further embodiment, step one, initialization settings, adjusts the printer tension to an intermediate initial value that matches the paper type compatible with the printer.

[0013] In a further embodiment, in step two, after initialization, the paper tension range is set according to the different paper flexibility. When the paper tension is within the set range, the traction motor does not make any adjustments when the paper is not printing. When the paper tension exceeds the set range and printing occurs, the tension control unit receives the detection data fed back by the tension detection unit and transmits the processed data to the traction motor.

[0014] In a further embodiment, in step three, the traction motor feeds the paper into the printing area, the tension detection unit detects the paper tension during the process of feeding the paper into the printing area, and performs real-time tension detection during the printing process. Then, the detection result is fed back to the tension control unit to adjust the paper tension. The traction motor obtains the control command from the tension control unit to generate a reverse braking torque so that the paper maintains a certain tension when printing stops.

[0015] In a further embodiment, during step four, when the traction motor conveys the placed paper, the paper deforms under the action of external force, as specifically expressed below:

[0016]

[0017] Where T represents the tension of the printer on the paper; ε represents the cross-sectional area of ​​the paper; L represents the distance the printer pushes the paper; t represents the time from paper placement to printing completion; V2 represents the printer speed at which the paper is printed; and V1 represents the paper placement speed.

[0018] In a further embodiment, in step five, the tension control unit acquires the detection data from the tension detection unit and dynamically compensates the torque of the traction motor based on the change in paper tension, as specifically expressed below:

[0019] M=m1±m2

[0020] Where M represents the total torque value of the traction motor, m1 represents the initial torque value of the traction motor, and m2 represents the dynamic compensation torque value.

[0021] In a further embodiment, step six involves performing defect detection on the printed paper and classifying the printed paper into four categories: qualified, ink leakage, wrinkled, and damaged. After the paper defect detection is completed, the tilt and offset detection unit installed in the printer detects the overall tilt and offset of the paper during printing, detects the tilt of each line of text, counts the number of parallel character lines and calculates the proportion of parallel lines, compares the proportion with the qualified threshold to determine whether the printed content is tilted, and if tilted, the position of the nozzle of the printing mechanism is adjusted by moving the offset detection component.

[0022] In a further embodiment, the offset detection assembly includes a tilt detection unit, an offset detection unit, a feeder, a heated bed, a nozzle, and a motion unit; the feeder controls the movement speed and extrusion amount of the tube by a motor to extrude and deposit the material on a specified shape; the heated bed heats the material in the feeder by photothermal heating; and the motion unit adjusts the printing position of the nozzle to align the printer with the paper placement position.

[0023] In a further embodiment, the tension control unit detects the tension of the traction motor via the tension detection unit, monitors the tension of the traction motor during the printing process, and performs tension torque control. Then, it confirms whether printing is complete. If not, it returns to the tension control unit for rereading. If yes, it prints the paper and displays the printing data. Then, it feeds back the data displayed on the paper to the tension control unit, locks and records the tension of the printed paper, and prepares for the next paper printing.

[0024] Beneficial Effects: This invention proposes a paper tension adjustment method for printers. By setting the initial tension of the traction motor, the method satisfies the intermediate tension value suitable for the paper in the printer. The tension detection unit detects the tension changes of the traction motor and feeds the detection data back to the tension control unit to regulate the operation of the traction motor. The deformation of the paper under the transport of the traction motor is calculated to obtain the tension of the traction motor suitable for the paper. Based on the changes in paper tension, the torque of the traction motor is adjusted to meet the tension value required under the paper transport state. Then, the tilt or offset state of the first printed paper is detected by the offset detection component and the angle is adjusted to prepare for the next paper printing, avoiding errors in subsequent papers caused by incorrect position of the first paper and preventing paper jams during the paper transport process. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the process of the present invention.

[0026] Figure 2 This is a flowchart illustrating the process of setting the starting point and target point according to the present invention. Detailed Implementation

[0027] The applicant argues that variations in paper tension in existing printers affect the quality of printed paper, frequently resulting in printing defects such as paper damage, wrinkles, ink leakage, text tilting, and unclear printed text. Therefore, it is impossible to detect and adjust the paper's printing status through the printer's detection system to ensure accurate paper positioning during continuous printing.

[0028] To address the problems existing in the prior art, the present invention provides a method for adjusting the paper tension of a printer by adjusting the torque of the traction motor that transports the paper according to the different toughness of the paper.

[0029] The present solution will be further described in detail below through embodiments and with reference to the accompanying drawings.

[0030] In this application, we propose a method for adjusting the paper tension of a printer, comprising the following steps:

[0031] Step 1: First, initialize the tension of the paper placed inside the printer; the initialization setting adjusts the printer tension to the intermediate initial value that matches the paper type compatible with the printer.

[0032] Step 2: Set the paper tension range and adjust the tension if it exceeds the range. After initialization, set the paper tension range according to the paper's flexibility. When the paper tension is within the set range, the traction motor does not make any adjustments when the paper is not printing. When the paper tension exceeds the set range and printing begins, the tension control unit receives the detection data fed back by the tension detection unit and transmits the processed data to the traction motor.

[0033] Step 3: Real-time detection of paper tension during the printing process; the traction motor feeds the paper into the printing area, and the tension detection unit detects the paper tension during the process of feeding the paper into the printing area and performs real-time detection of the tension during the printing process. Then, the detection result is fed back to the tension control unit to adjust the paper tension. The traction motor receives the control command from the tension control unit and generates a reverse braking torque so that the paper maintains a certain tension when printing stops.

[0034] Step four: Calculate the deformation generated during the paper feeding process and feed the calculation results back to the tension control unit; when the traction motor feeds the placed paper, the paper will deform under the action of external force, as shown in the following expression:

[0035]

[0036] Where T represents the tension of the printer on the paper; ε represents the cross-sectional area of ​​the paper; L represents the distance the printer pushes the paper; t represents the time from paper placement to printing completion; V2 represents the printer speed at which the paper is printed; and V1 represents the paper placement speed.

[0037] Step 5: The tension control unit drives the traction motor to perform dynamic tension compensation based on changes in paper tension. The tension control unit acquires the detection data from the tension detection unit and dynamically compensates the torque of the traction motor based on changes in paper tension. The specific expression is as follows:

[0038] M=m1±m2

[0039] Where M represents the total torque value of the traction motor, m1 represents the initial torque value of the traction motor, and m2 represents the dynamic compensation torque value.

[0040] Step six involves performing offset detection on the printed paper. If no offset is found, the next paper is printed. If offset is found, the offset detection component adjusts the offset and prepares for the next paper to be printed. The printed paper is then inspected for defects and categorized into four types: acceptable, ink leakage, wrinkles, and damage. After the defect detection is completed, a tilt and offset detection unit installed in the printer detects the overall tilt and offset of the paper during printing. The tilt of each line of text is detected, and the number of parallel character lines is counted and the percentage of parallel lines is calculated. The percentage is compared with the acceptable threshold to determine if the printed content is tilted. If tilted, the offset detection component adjusts the position of the nozzles in the printing mechanism. The offset detection component includes a tilt detection unit, an offset detection unit, a feeder, a heated bed, nozzles, and a motion unit. The feeder uses a motor to control the tube's movement speed and extrusion volume, extruding and depositing material onto a specified shape. The heated bed heats the material in the feeder using photothermal energy. The motion unit adjusts the nozzle's printing position to align the printer with the paper's placement.

[0041] The tension control unit detects the tension of the traction motor via the tension detection unit, monitors the tension of the traction motor during the printing process, and controls the tension torque. Then, it confirms whether the printing is complete. If not, it returns to the tension control unit to reread the data. If yes, it prints the paper and displays the printing data. Then, it feeds the data displayed on the paper back to the tension control unit, locks and records the tension of the printed paper, and prepares for the next paper printing.

[0042] As described above, although the invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method for adjusting paper tension in a printer, characterized in that, include: Step 1: First, initialize the tension settings of the paper placed inside the printer; Step two: Set the paper tension range; And adjust the tension if it exceeds the range; Step 3: Real-time detection of paper tension during the printing process; Step 4: Calculate the deformation generated during the paper feeding process and feed the calculation results back to the tension control unit; Step 5: The tension control unit drives the traction motor to perform dynamic tension compensation based on changes in paper tension. Step 6: Perform offset detection on the printed paper. If no offset is found, print the next paper. If offset is found, adjust the offset using the offset detection component and prepare for the next paper to be printed. In step one, the initialization settings adjust the printer tension to the intermediate initial value that matches the paper type compatible with the printer. In step two, after initialization, the paper tension range is set according to the different paper flexibility. When the paper tension is within the set range, the traction motor does not make any adjustments when the paper is not printing. When the paper tension exceeds the set range and the paper is printing, the tension control unit receives the detection data fed back by the tension detection unit and transmits the processed data to the traction motor. In step four, when the traction motor conveys the placed paper, the paper will deform under the action of external force, as specifically expressed below: ,in, This indicates the tension of the paper applied by the printer; This indicates the cross-sectional area of ​​the paper. Indicates the distance the printer pushes the paper; Indicates the time from when the paper is placed to when printing is complete; This indicates the speed at which the printer prints paper; This indicates the speed at which the paper is placed.

2. The method for adjusting paper tension in a printer according to claim 1, characterized in that, In step three, the traction motor feeds the paper into the printing area. The tension detection unit detects the paper tension during the process of feeding the paper into the printing area and performs real-time tension detection during the printing process. The detection result is then fed back to the tension control unit to adjust the paper tension. The traction motor receives the control command from the tension control unit and generates a reverse braking torque to maintain a certain tension on the paper when printing stops.

3. The method for adjusting paper tension in a printer according to claim 1, characterized in that, In step five, the tension control unit acquires the detection data from the tension detection unit and dynamically compensates the torque of the traction motor based on the changes in paper tension. The specific expression is as follows: , in, This represents the total torque value of the traction motor. This indicates the initial torque value of the traction motor. This indicates the dynamic compensation torque value.

4. The method for adjusting paper tension in a printer according to claim 1, characterized in that, In step six, the printed paper is inspected for defects and classified into four categories: qualified, ink leakage, wrinkled, and damaged. After the paper defect inspection is completed, the tilt and offset detection unit installed in the printer detects the overall tilt and offset of the paper during printing, detects the tilt of each line of text, counts the number of parallel character lines and calculates the proportion of parallel lines, compares the proportion with the qualified threshold to determine whether the printed content is tilted, and if tilted, the position of the nozzle of the printing mechanism is adjusted by moving the offset detection component.

5. A method for adjusting paper tension in a printer according to claim 4, characterized in that, The offset detection assembly includes a tilt detection unit, an offset detection unit, a feeder, a heated bed, a nozzle, and a motion unit. The feeder controls the movement speed and extrusion amount of the tube via a motor to extrude and deposit the material onto a specified shape. The heated bed heats the material inside the feeder through photothermal heating. The motion unit adjusts the printing position of the nozzle to align the printer with the paper's placement.

6. The method for adjusting paper tension in a printer according to claim 1, characterized in that, The tension control unit detects the tension of the traction motor via the tension detection unit, monitors the tension of the traction motor during the printing process, and controls the tension torque. Then, it confirms whether the printing is complete. If not, it returns to the tension control unit to reread the data. If yes, it prints the paper and displays the printing data. Then, it feeds the data displayed on the paper back to the tension control unit, locks and records the tension of the printed paper, and prepares for the next paper printing.

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