Printer resistance testing device

Abstract

The utility model discloses a printer resistance testing device, a printer to be tested comprises a printer control panel and a printing head, the printer resistance testing device comprises a power supply, a current adjusting unit, a current value obtaining unit, printing paper and a host, and the power supply is electrically connected with the printer control panel. The power supply supplies power to the printer control panel to enable the printer control panel to output first driving current; the current adjusting unit is electrically connected to the printer control panel, and the first driving current is adjusted through the current adjusting unit to obtain a second driving current; the current value obtaining unit is electrically connected to the current adjusting unit, records the current value of the second driving current and outputs the second driving current to the printer control panel; printing paper is arranged on the printing head, and the printing head carries out printing operation after receiving the second driving current; the host is electrically connected to the printer control panel. The host obtains the resistance value of the printer to be tested based on the current value of the second driving current through a preset printing resistance-driving current corresponding table.

Description

Technical Field

[0001] The utility model relates to the technical field of printer testing, in particular to a printer resistance testing device. Background Art

[0002] With the continuous advancement of technology, printers have become an indispensable device in daily life and work. However, during printer use, problems such as paper jams and reduced print quality often occur due to the influence of structural resistance, seriously affecting the user experience. Therefore, how to accurately measure the structural resistance of printers to optimize printer design and improve print quality and stability has become a pressing issue. At the same time, traditional printer structural resistance testing methods often suffer from complex operations and low measurement accuracy, and cannot accurately reflect the structural resistance of printers during actual use.

[0003] Therefore, it is urgent to develop a printer resistance testing device that overcomes the above-mentioned defects. Utility Model Content

[0004] In response to the above technical problems, the present invention proposes a printer resistance testing device, wherein the printer to be tested includes a printer control board and a print head, and the printer resistance testing device includes:

[0005] a power supply electrically connected to the printer control board, the power supply supplying power to the printer control board so that the printer control board outputs a first driving current;

[0006] a current regulating unit, electrically connected to the printer control board, and regulating the first driving current to obtain a second driving current through the current regulating unit;

[0007] a current value obtaining unit, electrically connected to the current regulating unit, recording the current value of the second driving current and outputting the second driving current to the printer control board;

[0008] Printing paper is mounted on the print head, the print head is electrically connected to the printer control board, and the print head performs a printing operation after receiving the second driving current output by the printer control board;

[0009] The host is electrically connected to the printer control board, and obtains the resistance value of the printer to be tested based on the current value of the second driving current through a preset printing resistance-driving current correspondence table.

[0010] The above-mentioned printer resistance testing device further includes a plurality of weights of different masses, at least one of which is suspended on the printing paper to obtain a plurality of different simulated printing resistances.

[0011] In the above-mentioned printer resistance testing device, the current adjustment unit adjusts the first driving current to the second driving current based on the simulated printing resistance, so that the second driving current can drive the print head to perform a printing operation.

[0012] In the above-mentioned printer resistance testing device, the current value obtaining unit records the current value of the second driving current corresponding to the simulated printing resistance.

[0013] In the above-mentioned printer resistance testing device, the host constructs the printing resistance-driving current correspondence table based on multiple resistance values of the simulated printing resistance and multiple current values of the second driving current.

[0014] The above-mentioned printer resistance testing device, wherein the current adjustment unit is a sliding rheostat, one end of the sliding rheostat is electrically connected to the printer control board, and the other end of the sliding rheostat is electrically connected to the current value acquisition unit, and the first driving current is adjusted to the second driving current through the sliding rheostat.

[0015] The above-mentioned printer resistance testing device, wherein the current value obtaining unit is an ammeter, one end of the ammeter is electrically connected to the sliding rheostat, and the other end of the ammeter is electrically connected to the printer control board, and the current value of the second driving current is obtained through the ammeter.

[0016] In the above-mentioned printer resistance testing device, the printing paper is thermal printing paper.

[0017] The above-mentioned printer resistance testing device, wherein the sliding rheostat adjusts the first driving current to the second driving current when the simulated printing resistance is not set, so that the second driving current can drive the print head to perform a printing operation, and the ammeter records the current value of the second driving current when the simulated printing resistance is not set.

[0018] The above-mentioned printer resistance testing device, wherein the host constructs the printing resistance-driving current correspondence table based on the resistance value of the simulated printing resistance being 0, the current value of the second driving current when the simulated printing resistance is not set, multiple resistance values of the simulated printing resistance and multiple current values of the second driving current.

[0019] Compared with the prior art, the advantages and positive effects of the present invention are:

[0020] The utility model can accurately measure the structural resistance of the printer by adjusting the sliding rheostat and hanging weights on the printing paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of the resistance testing device for a printer according to the present invention;

[0022] Figure 2 This is a connection diagram of the printer resistance testing device of the present invention;

[0023] Figure 3 It is a schematic diagram of the working process of the utility model. DETAILED DESCRIPTION

[0024] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may also be beneficially combined in other embodiments.

[0025] In the description of this utility model, it should be noted that the terms "inner," "outer," "upper," "lower," "front," and "rear," etc., indicating directions or positional relationships, are based on the positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Please refer to Figure 1 - Figure 2 , Figure 1 This is a schematic structural diagram of the resistance testing device for a printer according to the present invention; Figure 2 This is a schematic diagram of the connection of the resistance test device of the printer of the utility model. Figure 1 - Figure 2As shown, a printer resistance testing device of the present invention includes a printer 1 to be tested including a printer control board 11 and a print head 12. The printer resistance testing device includes: a power supply 21, a current regulating unit 22, a current value obtaining unit 23, printing paper 24, and a host 25. The power supply 21 is electrically connected to the printer control board 11, and supplies power to the printer control board 11 so that the printer control board 11 outputs a first driving current; the current regulating unit 22 is electrically connected to the printer control board 11, and the first driving current is adjusted by the current regulating unit 22 to obtain a second driving current. The current value obtaining unit 23 is electrically connected to the current regulating unit 22 to record the current value of the second driving current and output the second driving current to the printer control board 11; the printing paper 24 is installed on the print head 12, and the print head 12 is electrically connected to the printer control board 11. The print head 12 performs a printing operation after receiving the second driving current output by the printer control board 11; the host 25 is electrically connected to the printer control board 11, and the host 25 obtains the resistance value of the printer 1 to be tested based on the current value of the second driving current through a preset printing resistance-driving current correspondence table.

[0027] It should be noted that, in this embodiment, it is a preferred embodiment to use thermal printing paper as the printing paper.

[0028] The print head 12 includes a stepper motor 121, and the printer control board 11 includes a stepper motor driver board (not shown). The stepper motor driver board (not shown) receives and outputs a second drive current to drive the stepper motor 121 to print. The present invention quantitatively analyzes the relationship between printing resistance and stepper motor drive current through testing, thereby inferring the actual resistance value of the printer structure during printing.

[0029] Furthermore, the printer resistance testing device also includes a plurality of weights 26 of different masses, at least one of the weights 26 being suspended on the printing paper 24 to obtain a plurality of different simulated printing resistances; the current regulating unit 22 adjusts the first driving current to the second driving current based on the simulated printing resistance, so that the second driving current can drive the print head 12 to perform a printing operation; the current value obtaining unit 23 records the current value of the second driving current corresponding to the simulated printing resistance; the host 25 constructs the printing resistance-driving current correspondence table based on the resistance values of the plurality of simulated printing resistances and the current values of the plurality of second driving currents.

[0030] Furthermore, the current regulating unit 22 is a sliding rheostat, and the current value obtaining unit 23 is an ammeter. One end of the sliding rheostat is electrically connected to the stepper motor drive board of the printer control board (not shown), and the other end of the sliding rheostat is electrically connected to the ammeter. The first driving current is adjusted to the second driving current through the sliding rheostat; one end of the ammeter is electrically connected to the sliding rheostat, and the other end of the ammeter is electrically connected to the printer control board, and the current value of the second driving current is obtained through the ammeter.

[0031] Furthermore, when the simulated printing resistance is not set, the sliding rheostat adjusts the first driving current to the second driving current so that the second driving current can drive the print head 12 to perform a printing operation, and the ammeter records the current value of the second driving current when the simulated printing resistance is not set; the host 25 constructs the printing resistance-driving current correspondence table based on the resistance value of the simulated printing resistance being 0, the current value of the second driving current when the simulated printing resistance is not set, multiple resistance values of the simulated printing resistance and multiple current values of the second driving current.

[0032] Please refer to the following Figure 3 , Figure 3 This is a schematic diagram of the working process of the utility model. Figure 3 As shown, the working process is as follows:

[0033] 1. Prepare the test equipment: including printer, sliding rheostat, ammeter, host computer and weights.

[0034] Connect the sliding rheostat to the drive circuit of the printer control board to adjust the drive current of the stepper motor.

[0035] The ammeter is used to measure the driving current value of the stepper motor;

[0036] The controller is used to control the resistance change of the sliding rheostat and collect and process data;

[0037] Weights are used to hang on thermal printing paper to simulate different printing resistances.

[0038] 2. Set up the test environment: Ensure the test environment is quiet and stable, free from external vibrations and interference. Place the printer on a flat, stable surface.

[0039] 3. Perform an initial test: Connect the print head to the print control board separately (not mounted on the actual printer structure). Without hanging weights on the thermal printing paper, set the initial resistance of the sliding resistor using the controller and start the printer to print. Simultaneously, use an ammeter to measure the stepper motor's drive current in real time and record the data.

[0040] 4. Hanging Weight Test: Connect the print head to the print control board separately (not mounted on the actual printer structure) and hang weights of varying weights on thermal paper to simulate varying resistances. Use the controller to gradually change the resistance of the sliding rheostat, repeating the printing operation and current measurement to obtain the stepper motor drive current values under varying resistances.

[0041] 5. Data analysis: Based on the measured current value and the weight of the hanging weight, analyze the corresponding relationship between the printer resistance and current.

[0042] 6. Printer structure resistance measurement: Install the print head into the actual printer structure housing. Use the controller to gradually change the resistance of the sliding rheostat until the current is sufficient to drive the printer to print normally. Record the stepper motor drive current value at this time. Based on the corresponding relationship between printing resistance and current analyzed in step 5, the actual printer structure resistance is finally determined.

[0043] In summary, this utility model combines the two technical methods of sliding rheostat adjustment and the method of hanging weights on printing paper. This method not only accurately controls the variables during the test process, but also simulates the resistance conditions of the printer during actual operation, thereby more accurately evaluating the structural resistance and performance of the printer.

[0044] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A printer resistance testing device, characterized in that: The printer to be tested includes a printer control board and a print head, and the printer resistance testing device includes: a power supply electrically connected to the printer control board, the power supply supplying power to the printer control board so that the printer control board outputs a first driving current; a current regulating unit, electrically connected to the printer control board, and regulating the first driving current to obtain a second driving current through the current regulating unit; a current value obtaining unit, electrically connected to the current regulating unit, recording the current value of the second driving current and outputting the second driving current to the printer control board; Printing paper is mounted on the print head, the print head is electrically connected to the printer control board, and the print head performs a printing operation after receiving the second driving current output by the printer control board; The host is electrically connected to the printer control board, and obtains the resistance value of the printer to be tested based on the current value of the second driving current through a preset printing resistance-driving current correspondence table.

2. The printer resistance testing device according to claim 1, wherein: It also includes a plurality of weights with different masses, at least one of which is suspended on the printing paper to obtain a plurality of different simulated printing resistances.

3. The printer resistance testing device according to claim 2, wherein: The current adjustment unit adjusts the first driving current to the second driving current based on the simulated printing resistance, so that the second driving current can drive the print head to perform a printing operation.

4. The printer resistance testing device according to claim 3, wherein: The current value obtaining unit records the current value of the second driving current corresponding to the simulated printing resistance.

5. The printer resistance testing device according to claim 4, wherein: The host constructs the printing resistance-driving current correspondence table based on a plurality of resistance values of the simulated printing resistances and a plurality of current values of the second driving currents.

6. The printer resistance testing device according to claim 5, wherein: The current regulating unit is a sliding rheostat, one end of which is electrically connected to the printer control board, and the other end of which is electrically connected to the current value obtaining unit. The first driving current is adjusted to the second driving current through the sliding rheostat.

7. The printer resistance testing device according to claim 6, wherein: The current value obtaining unit is an ammeter, one end of the ammeter is electrically connected to the sliding rheostat, and the other end of the ammeter is electrically connected to the printer control board, and the current value of the second driving current is obtained through the ammeter.

8. The printer resistance testing device according to claim 1, wherein: The printing paper is thermal printing paper.

9. The printer resistance testing device according to claim 7, wherein: When the simulated printing resistance is not set, the sliding resistor adjusts the first driving current to the second driving current so that the second driving current can drive the print head to perform a printing operation, and the ammeter records the current value of the second driving current when the simulated printing resistance is not set.

10. The printer resistance testing device according to claim 9, wherein: The host constructs the printing resistance-driving current correspondence table based on the resistance value of the simulated printing resistance being 0, the current value of the second driving current when the simulated printing resistance is not set, multiple resistance values of the simulated printing resistance and multiple current values of the second driving current.

Images