OPC photosensitive drum surface hardness testing tool

Abstract

The utility model discloses a tool for testing the surface hardness of an OPC photosensitive drum. The tool comprises a base, a guide rail, a hardness testing pen clamp assembly, a hardness testing pen, a supporting tool assembly, an electric motor and a transverse lead screw, the transverse lead screw is arranged on the base in parallel, the supporting tool assembly is arranged on the guide rail, the erecting distance is adjustable, and the supporting tool assembly is used for fixing an OPC photosensitive drum; the hardness test pen clamp assembly is arranged on the transverse lead screw and is used for driving a hardness test pen clamped on the hardness test pen clamp assembly to move up and down; the electric motor is used for driving the transverse lead screw to rotate. The device is high in test accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of OPC photosensitive drum quality detection, in particular to an OPC photosensitive drum surface hardness testing tool. Background Art

[0002] The OPC photosensitive drum is a photoelectric conversion device formed by coating the surface of a conductive aluminum cylinder with OPC (Organic Photoconductor) organic photoconductor material. Its characteristics are that it is an insulator in the dark and can maintain a certain static charge. When irradiated with light of a certain wavelength, it becomes a conductor and releases the charge through the aluminum base to form an electrostatic latent image. It is the core component of a laser printer.

[0003] Due to the different series and brands of printers (copiers) on the market, there are differences in their requirements for the life of OPC. The OPC photosensitive drum is a consumable, and its surface hardness and service life are in a linear relationship, that is, the greater the surface hardness, the better the wear resistance and the longer the service life of the drum core.

[0004] Currently, hardness testing in the industry is typically performed using a pencil hardness tester. This method has significant limitations, resulting in inaccurate test results and being easily affected by factors such as operator technique and pencil condition, leading to significant discrepancies in test results. Consequently, OPC drum lifespan testing in the market typically involves placing the drum core on a printer, which is time-consuming and labor-intensive. Furthermore, the traditional pencil hardness test method has significant limitations. The hardness test range is HB-4H, while the scratch resistance of OPC drums is generally around 2H hardness, making it impossible to accurately determine the hardness differences of OPC drums. Furthermore, traditional pencil hardness testers are unable to test OPC drum cores with multiple diameters and can only test OPC drum cores with a fixed diameter using fixed fixtures. This results in complex operation and unstable test results. Utility Model Content

[0005] In view of this, the utility model provides an OPC photosensitive drum surface hardness testing tool with high testing accuracy.

[0006] The technical solutions adopted in this utility model are as follows:

[0007] An OPC photosensitive drum surface hardness testing tool comprises a base, a guide rail, a hardness testing pen fixture assembly, a hardness testing pen, a support assembly, an electric motor and a transverse lead screw;

[0008] The guide rail and transverse screw are arranged in parallel on the base, and the bracket assembly is arranged on the guide rail with an adjustable mounting spacing for fixing the OPC photosensitive drum; the hardness test pen clamp assembly is arranged on the transverse screw, and the hardness test pen clamp assembly is used to drive the hardness test pen clamped thereon to move up and down; the electric motor is used to drive the transverse screw to rotate.

[0009] Furthermore, the hardness test pen fixture assembly includes a hand crank, a vertical lead screw, a vertical guide post, a test pen fixture and a mounting base;

[0010] The vertical screw and the vertical guide column are both vertically arranged on the mounting seat, and the test pen fixture is simultaneously installed on the vertical screw and the vertical guide column. The hand crank is used to drive the vertical screw to rotate; the mounting seat is installed on the horizontal screw.

[0011] Furthermore, the bracket assembly includes two brackets and two groups of rollers; the two brackets are installed on the guide rail at intervals, and the two groups of rollers are respectively arranged on the two opposite end faces of the two brackets, each group of rollers includes two rollers, which are used to place the OPC photosensitive drum, and at the same time, the two end faces of the OPC photosensitive drum are abutted against the end faces of the brackets on both sides.

[0012] Furthermore, the base includes a chassis and feet, and four feet are arranged at the four corners of the bottom surface of the chassis; the chassis is a steel plate.

[0013] Furthermore, the chassis has a thickness of 15-25 mm.

[0014] Furthermore, the hardness test pen has three springs with different stiffnesses; the test tool also includes a limiter, which is arranged on the hardness test pen fixture assembly and is used to limit the compression distance after the hardness test pen tip contacts the highest point of the OPC photosensitive drum surface.

[0015] Beneficial effects:

[0016] 1. This utility model utilizes an electric motor to drive a transverse screw, which propels the hardness test pen fixture assembly along the surface of the OPC drum at a constant speed. This stabilizes the lateral movement of the hardness test pen, improving test stability and ensuring accurate test results. Furthermore, the fixture assembly can be adjusted along the guide rail to adjust its spacing according to the length of the OPC drum, providing a wide range of applications.

[0017] 2. The chassis of the utility model is a steel plate, which is heavy, and four feet are set under the chassis to ensure the stability of the equipment and the stability of the entire equipment during the test.

[0018] 3. The utility model hardness test pen has three springs with different stiffness, which can perform stepless force test of hardness between 0-20N. The limiter is set to ensure the compression distance, further ensuring that the force on the OPC photosensitive drum remains consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is the main view of the utility model.

[0021] Figure 3 It is a top view of the utility model.

[0022] Among them, 1- horizontal guide column, 2- hand joystick, 3- vertical screw, 4- vertical guide column, 5- horizontal screw, 6- electric motor, 7- guide rail, 8- bracket, 9- hardness test pen, 10- OPC photosensitive drum, 11- chassis, 12- foot. DETAILED DESCRIPTION

[0023] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0024] The utility model provides an OPC photosensitive drum surface hardness testing tool, such as Figure 1-3 As shown, it includes a base, a guide rail 7, a hardness test pen fixture assembly, a hardness test pen 9, a bracket assembly, an electric motor 6, a transverse guide column 1 and a transverse screw 5.

[0025] The guide rail 7 and the transverse screw 5 are arranged in parallel on the base, and the bracket assembly is arranged on the guide rail 7 with an adjustable mounting spacing for fixing the OPC photosensitive drum 10; transverse guide columns 1 are also provided on both sides of the transverse screw, and the hardness test pen clamp assembly is arranged on the transverse screw 5 and the transverse guide column 1. The hardness test pen clamp assembly is used to drive the hardness test pen 9 clamped thereon to move up and down; the electric motor 6 is used to drive the transverse screw 5 to rotate.

[0026] Specifically, the hardness test pen fixture assembly includes a hand crank 2, a vertical screw 3, a vertical guide column 4, a test pen fixing fixture and a mounting base; the vertical screw 3 and the vertical guide column 4 are both vertically arranged on the mounting base, and the test pen fixture is also installed on the vertical screw 3 and the vertical guide column 4. The hand crank 2 is used to drive the vertical screw to rotate; the mounting base is installed on the horizontal screw 5.

[0027] The bracket assembly includes two brackets 8 and two sets of rollers. The two brackets 8 are spaced apart and mounted on guide rails 7. Two sets of rollers are positioned on opposite ends of the brackets 8. Each set of rollers, consisting of two rollers, is used to support the OPC photosensitive drum 10. The two end faces of the OPC photosensitive drum 10 abut against the end faces of the brackets 8 on either side, ensuring that the OPC photosensitive drum 10 does not rotate or slide during testing. This allows for testing of OPC drum cores of various diameters and lengths.

[0028] The base includes a chassis 11 and feet 12, and four feet 12 are placed at the four corners of the bottom of the chassis 11; the chassis 11 is a steel plate to increase the weight of the equipment, and the thickness of the chassis 11 is 15-25mm.

[0029] The hardness test pen 9 has three springs of different stiffness, which can change the force infinitely. It uses the German ERIC hardness test pen 318 to test the hardness between 0-20N. The test tool also includes a limiter, which is set on the hardness test pen fixture assembly to limit the compression distance after the tip of the hardness test pen 9 contacts the highest point of the surface of the OPC photosensitive drum 10.

[0030] The steps for using the test tool are as follows:

[0031] Step 1: Before testing, you need to confirm whether there is any abnormality on the surface of the OPC photosensitive drum 10 to be tested. If the surface is visibly uneven, do not continue testing. After confirming that there is no abnormality on the OPC photosensitive drum 10 to be tested, prepare to start testing.

[0032] Step 2: Turn the hand crank 2 connected to the vertical screw 3 to ensure sufficient distance between the hardness test pen 9 and the bracket 8. Then, place the OPC photosensitive drum 10 to be tested. After the OPC photosensitive drum 10 is placed firmly, lock the bracket 8 so that both ends of the bracket 8 are pressed against the OPC photosensitive drum 10 to ensure that the OPC photosensitive drum 10 remains stationary.

[0033] Step three, first select a spring with a smaller range, test the hardness range of 0-3N, install the spring into the hardness test pen 9, install the hardness test pen 9 on the test pen fixture of the hardness test pen fixture assembly, turn on the electric motor 6, move the tip of the hardness test pen 9 to the leftmost end of the area to be tested, rotate the hand crank 2 of the vertical screw 3, and control the compression distance between the hardness tester pen tip and the OPC photosensitive drum 10 through the limiter.

[0034] Step 4: Turn on the electric motor 6 and make the hardness test pen 9 slide across the surface of the OPC photosensitive drum 10 at a uniform speed toward the right end. The translation speed is controlled within 10mm / S and the test length is 40mm. After sliding 40mm, stop the electric motor 6; replace the spring of the hardness test pen 9 so that its test hardness range is 0-10N, then adjust the bracket 8, manually rotate the OPC photosensitive drum 10, and change the test area.

[0035] Step 5: After the test is completed, remove the OPC photosensitive drum 10 and visually inspect the scratch condition. Then, install it into a printer and print the scratch degree to determine the critical value of no scratch. This data is the maximum hardness of the tested OPC photosensitive drum 10.

[0036] Step 6: After the test of a single OPC photosensitive drum 10 is completed, shake the hand rocker 2 so that the hardness test pen 9 is not in contact with the OPC photosensitive drum 10, remove the OPC photosensitive drum 10 that has completed the test, and replace it with the next one to continue testing.

[0037] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. An OPC photosensitive drum surface hardness testing tool, characterized in that: It includes a base, a guide rail, a hardness test pen fixture assembly, a hardness test pen, a support assembly, an electric motor and a transverse screw; The guide rail and transverse screw are arranged in parallel on the base, and the bracket assembly is arranged on the guide rail with an adjustable mounting spacing for fixing the OPC photosensitive drum; the hardness test pen clamp assembly is arranged on the transverse screw, and the hardness test pen clamp assembly is used to drive the hardness test pen clamped thereon to move up and down; the electric motor is used to drive the transverse screw to rotate.

2. The OPC photosensitive drum surface hardness testing tool as claimed in claim 1, characterized in that: The hardness test pen fixture assembly includes a hand crank, a vertical lead screw, a vertical guide column, a test pen fixture and a mounting base; The vertical screw and the vertical guide column are both vertically arranged on the mounting seat, and the test pen fixture is simultaneously installed on the vertical screw and the vertical guide column. The hand crank is used to drive the vertical screw to rotate; the mounting seat is installed on the horizontal screw.

3. The OPC photosensitive drum surface hardness testing tool as claimed in claim 1, characterized in that: The bracket assembly includes two brackets and two groups of rollers; the two brackets are installed on the guide rail at intervals, and the two groups of rollers are respectively arranged on the two opposite end faces of the two brackets. Each group of rollers includes two rollers for placing the OPC photosensitive drum, and at the same time, the two end faces of the OPC photosensitive drum are in contact with the end faces of the brackets on both sides.

4. The OPC photosensitive drum surface hardness testing tool as claimed in claim 1, characterized in that: The base includes a chassis and feet, and four feet are arranged at the four corners of the bottom surface of the chassis; the chassis is a steel plate.

5. The OPC photosensitive drum surface hardness testing tool as claimed in claim 4, characterized in that: The thickness of the chassis is 15-25 mm.

6. The OPC photosensitive drum surface hardness testing tool according to any one of claims 1 to 5, characterized in that: The hardness test pen has three springs with different stiffness; The testing tool also includes a limiter, which is arranged on the hardness testing pen fixture assembly and is used to limit the compression distance after the hardness testing pen tip contacts the highest point of the OPC photosensitive drum surface.

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