An on-line detector for uniformity of ink color of printed matter
By designing an online ink uniformity detector for printed materials, which employs a servo motor-driven detection mechanism and a D65 standard light source, the problem of subjective factors affecting traditional detection methods has been solved. This achieves automated and accurate ink uniformity detection, improving the quality of printed materials and the efficiency of detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU YIFENG PRINT CO LTD
- Filing Date
- 2025-05-06
- Publication Date
- 2026-06-23
AI Technical Summary
Traditional methods for detecting ink uniformity rely on manual visual inspection or the use of manual equipment such as colorimeters and colorimeters. These methods are easily affected by subjective factors and waste manpower, making it difficult to meet the needs of printing quality inspection in large-scale production.
An online ink uniformity tester for printed materials was designed. It adopts a servo motor driven detection mechanism and a D65 standard light source illumination component. Combined with a colorimeter, it realizes automated detection. The servo motor drives the colorimeter to move in all directions for detection, and the ink uniformity is evaluated by comparison with standard color values.
It achieves automated and accurate ink uniformity detection, reduces manual intervention, improves detection efficiency, ensures color consistency of printed materials, and saves human resources.
Smart Images
Figure CN224399229U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ink uniformity testing of printed materials, and more specifically, to an online ink uniformity testing instrument for printed materials. Background Technology
[0002] With the development of printing technology, the requirements for printing quality are constantly increasing. Especially in large-scale production, ensuring the uniformity of ink color in printed materials has become one of the important factors in improving product quality. Ink color uniformity directly affects the color consistency, appearance, and brand image of printed materials. Especially for products with high requirements, uneven ink color not only affects their visual effect but may also lead to waste of resources and time in the production process. Currently, the following defects still exist in the measurement of printed materials:
[0003] Traditional methods for detecting ink uniformity typically rely on manual visual inspection or the use of manual equipment such as colorimeters and colorimeters. These methods have several drawbacks: manual inspection is susceptible to subjective factors and also wastes considerable manpower. Therefore, an online ink uniformity testing instrument for printed materials is proposed. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of traditional ink uniformity testing methods, which typically rely on manual visual inspection or manual equipment such as colorimeters and colorimeters. Manual inspection is easily affected by subjective factors and also wastes a lot of manpower.
[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution:
[0006] The present invention is as follows: an online detector for the uniformity of ink color in printed matter, including a worktable, a detection mechanism for detecting the uniformity of ink color in printed paper is provided on the top of the worktable, and lighting components for improving the detection effect are provided on both sides of the detection mechanism.
[0007] The testing mechanism includes a support frame bolted to the opposite side walls of the worktable. A groove is formed on the inner top wall of the support frame, and a lead screw is rotatably connected inside the groove. A servo motor is bolted to the outer wall of the support frame, and the output end of the servo motor is coaxially arranged with one end of the lead screw. A protrusion is threaded onto the external side of the lead screw, and a colorimeter is bolted to the bottom of the protrusion. Support parts are fixedly connected to the four corners of the top of the worktable. Sliding rods are slidably connected inside the support parts, and pressure blocks are fixedly connected to the bottom of the sliding rods. Springs are fixedly connected to the top of the pressure blocks. A display screen is bolted to the side wall of the support frame.
[0008] As a preferred embodiment of this invention, the lighting assembly includes two extension rods fixedly connected to the side wall of the support frame, each of the two extension rods having a rotating rod rotatably connected inside, and a lighting lamp rotatably connected between the two rotating rods.
[0009] As a preferred technical solution of this utility model, a circular plate is fixedly connected to the side wall of the rotating rod away from the lighting lamp, and a first toothed groove is formed on the periphery of the circular plate. A rectangular rod is fixedly connected to the side wall of the extension rod, and a sliding plate is slidably connected to the outside of the rectangular rod. A positioning cover is fixedly connected to one end of the sliding plate, and a second toothed groove is formed on the inner wall of the positioning cover. The first toothed groove and the second toothed groove are used in conjunction.
[0010] As a preferred technical solution of this utility model, an arc-shaped baffle is fixedly connected to the inner top wall of the support part to prevent the printing paper from being clamped by the spring, and the height of the arc-shaped baffle is less than the height of the support part.
[0011] As a preferred technical solution of this utility model, a limiting rod is fixedly connected to the outer wall of the slide rod, and a limiting groove is opened at the top of the support part, and the limiting rod is slidably connected to the limiting groove.
[0012] As a preferred technical solution of this utility model, a stabilizing rod is fixedly connected to the inner wall of the groove, one end of the stabilizing rod passes through the protrusion and is slidably connected to the protrusion.
[0013] As a preferred technical solution of this utility model, the lighting lamp is a D65 standard light source.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] 1. Using the set detection mechanism, the printing paper is laid flat on the top of the worktable. Then, the sliding rod is pulled up to disengage the pressure block from the top of the worktable. Next, one of the four corners of the printing paper is placed under the pressure block. Then, the pressure block is released, and the spring force causes the pressure block to press down on the printing paper. The remaining three sliding rods are operated in the same way to fix the four corners of the printing paper. Then, the servo motor is started, which drives the lead screw to rotate, thereby moving the bump and color difference meter to perform all-round detection. During the detection process, no manual visual inspection is used, saving manpower and improving the detection effect.
[0016] 2. With the lighting component in place, the light provides illumination to the top of the workbench during use, enabling the colorimeter to more accurately detect the printing paper. If the light is not needed, it can be turned off without affecting the normal operation of the colorimeter. Attached Figure Description
[0017] Figure 1A schematic diagram of the structure of the online ink uniformity detector for printed matter provided by this utility model;
[0018] Figure 2 Left view of the online ink uniformity detector for printed matter provided by this utility model;
[0019] Figure 3 The online ink uniformity tester for printed matter provided by this utility model Figure 2 A three-dimensional cross-sectional view at point AA;
[0020] Figure 4 A schematic diagram of the detection mechanism of the online ink uniformity detector for printed matter provided by this utility model;
[0021] Figure 5 A schematic diagram of the structure of the online ink uniformity detector for printed matter provided by this utility model, including the circular plate, the first toothed groove, the rectangular rod, the sliding plate, the positioning cover, and the second toothed groove.
[0022] Figure 6 A schematic diagram of the arc-shaped baffle, limiting rod, and limiting groove of the online ink uniformity detector for printed matter provided by this utility model;
[0023] Figure 7 A schematic diagram of the stabilizing rod of the online ink uniformity tester for printed materials provided by this utility model.
[0024] The diagram shows: 1. Workbench; 2. Detection mechanism; 3. Lighting assembly; 4. Circular plate; 5. First toothed groove; 6. Rectangular rod; 7. Slide plate; 8. Positioning cover; 9. Second toothed groove; 10. Arc-shaped baffle; 11. Limiting rod; 12. Limiting groove; 13. Stabilizing rod; 201. Support frame; 202. Groove; 203. Lead screw; 204. Servo motor; 205. Protrusion; 206. Colorimeter; 207. Support part; 208. Slide rod; 209. Pressure block; 210. Spring; 211. Display screen; 301. Extension rod; 302. Rotating rod; 303. Lighting lamp. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.
[0026] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0027] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0029] like Figure 1 As shown, this embodiment proposes an online ink uniformity detector for printed matter, including a workbench 1, a detection mechanism 2 for detecting the ink uniformity of printed paper is provided on the top of the workbench 1, and lighting components 3 for improving the detection effect are provided on both sides of the detection mechanism 2.
[0030] like Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, the testing mechanism 2 includes a support frame 201 bolted to the opposite side walls of the worktable 1. A groove 202 is formed on the inner top wall of the support frame 201, and a lead screw 203 is rotatably connected inside the groove 202. A servo motor 204 is bolted to the outer wall of the support frame 201, and the output end of the servo motor 204 is coaxially arranged with one end of the lead screw 203. The support frame 201 supports the servo motor 204, and the output end of the servo motor 204 is fixedly connected to the lead screw 203 and can drive the lead screw 203 to rotate. A protrusion 20 is threaded onto the external side of the lead screw 203. 5. A colorimeter 206 is bolted to the bottom of the protrusion 205. The protrusion 205 is used to fix the colorimeter 206, which is used to detect the uniformity of ink color on the printing paper. Support parts 207 are fixedly connected to the four corners of the top of the workbench 1. A slide rod 208 is slidably connected inside the support part 207. A pressure block 209 is fixedly connected to the bottom of the slide rod 208. A spring 210 is fixedly connected to the top of the pressure block 209. The pressure block 209 is used to press the printing paper, and the spring 210 is used to apply pressure to the pressure block 209. A display screen 2 is bolted to the side wall of the support frame 201. 11. The display screen 211 is electrically connected to the colorimeter 206 and can display the colorimeter 206 values. In use, place the printing paper on top of the worktable 1, then pull up the slide bar 208. At this time, the spring 210 contracts. Next, place one corner of the printing paper under the pressure block 209, then release the slide bar 208. The spring force of the spring 210 causes the pressure block 209 to press down on the printing paper. Then, operate the remaining three slide bars 208 in the same way to fix the four corners of the printing paper. Then, start the servo motor 204 and the colorimeter 206. The colorimeter 206 comes with a standard for reference, which is usually compared with preset standard color values (e.g., standard Lab* values or specific color chart standards). The colorimeter 206 compares the color data of the measured area with these preset standard values to evaluate color deviation and ink uniformity. The servo motor 204 drives the lead screw 203 to rotate, thereby moving the bump 205 and the colorimeter 206 to detect the ink uniformity of the printing paper. The detection results are then transmitted to the display screen 211 via electrical signals for online detection.
[0031] like Figure 4 As shown, in a preferred embodiment, based on the above method, the lighting assembly 3 further includes two extension rods 301 fixedly connected to the side wall of the support frame 201. The interior of each extension rod 301 is rotatably connected to a rotating rod 302. A lighting lamp 303 is rotatably connected between the two rotating rods 302. When in use, the lighting lamp 303 can illuminate the top of the workbench 1 to avoid the top of the printing paper being too dark, which would affect the test results.
[0032] like Figure 5As shown, in a preferred embodiment, based on the above method, a circular plate 4 is fixedly connected to the side wall of the rotating rod 302 away from the lighting lamp 303. A first toothed groove 5 is provided on the periphery of the circular plate 4. A rectangular rod 6 is fixedly connected to the side wall of the extension rod 301. A sliding plate 7 is slidably connected to the outside of the rectangular rod 6. A positioning cover 8 is fixedly connected to one end of the sliding plate 7. A second toothed groove 9 is provided on the inner wall of the positioning cover 8. The first toothed groove 5 and the second toothed groove 9 are used in conjunction. When it is necessary to adjust the illumination angle of the lighting lamp 303 according to the user's needs, the lighting lamp 303 can be manually rotated. When it is rotated to the specified angle, the positioning cover 8 is moved, so that the sliding plate 7 slides along the rectangular rod 6, so that the second toothed groove 9 is locked on the first toothed groove 5, thereby limiting the rotation rod 302 and the lighting lamp 303.
[0033] like Figure 6 As shown, in a preferred embodiment, based on the above method, an arc-shaped baffle 10 is fixedly connected to the inner top wall of the support 207 to prevent the printing paper from being clamped by the spring 210. The height of the arc-shaped baffle 10 is less than the height of the support 207. When the slide bar 208 rises, the spring 210 will contract. At this time, the corner of the printing paper may be accidentally clamped by the spring 210. By setting the arc-shaped baffle 10, the printing paper can be prevented from contacting the spring 210 and causing damage to the printing paper.
[0034] like Figure 6 As shown, in a preferred embodiment, based on the above method, a limiting rod 11 is fixedly connected to the outer wall of the slide rod 208, and a limiting groove 12 is formed at the top of the support part 207. The limiting rod 11 is slidably connected to the limiting groove 12. During use, the slide rod 208 may rotate inside the support part 207. By setting the limiting groove 12 and the limiting rod 11, the rotation of the slide rod 208 and the pressure block 209 can be avoided, which would damage the printing paper.
[0035] like Figure 7 As shown, in a preferred embodiment, based on the above method, a stabilizing rod 13 is further fixedly connected to the inner wall of the groove 202. One end of the stabilizing rod 13 passes through the protrusion 205 and is slidably connected to the protrusion 205. When the servo motor 204 drives the lead screw 203 to rotate, if the friction between the protrusion 205 and the lead screw 203 is large, it may rotate with the lead screw 203. At this time, the stabilizing rod 13 plays a limiting role for the protrusion 205, preventing it from rotating with the lead screw 203.
[0036] like Figure 4 As shown, in a preferred embodiment, based on the above method, the lighting lamp 303 is further a D65 standard light source. The D65 light source simulates sunlight in the natural environment, thereby more accurately evaluating the printing effect and color reproduction, and improving the test results of the printing paper.
[0037] Specifically, when using this online ink uniformity tester for printed materials: connect the servo motor 204 and the lighting lamp 303 to an external power source, then place the printing paper on top of the worktable 1, and then pull up the slide bar 208. At this time, the spring 210 contracts. Next, place one corner of the printing paper under the pressure block 209, and then release the slide bar 208. The elastic force of the spring 210 drives the pressure block 209 to press down the printing paper. Then, operate the remaining three slide bars 208 in the same way to fix the four corners of the printing paper (e.g., Figure 6 (As shown), then the servo motor 204 and colorimeter 206 are started. The colorimeter 206 has a built-in standard as a reference, usually compared with preset standard color values (e.g., standard Lab* values, or specific color chart standards). The colorimeter 206 compares the color data of the measured area with these preset standard values to evaluate color deviation and ink uniformity. The servo motor 204 drives the lead screw 203 to rotate, thereby moving the bump 205 and the colorimeter 206, thus detecting the ink uniformity of the printing paper (e.g., ...). Figure 3 and Figure 7 As shown), the illumination lamp 303 is activated simultaneously. The illumination lamp 303 illuminates the top of the worktable 1 to prevent the top of the printed paper from being too dark, which could affect the detection results. The detection results are then transmitted to the display screen 211 (as shown). Figure 4 (as shown), and then conduct online detection.
[0038] All technical features in this embodiment can be freely combined according to actual needs.
[0039] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.
Claims
1. An online ink uniformity testing instrument for printed matter, comprising a worktable (1), characterized in that, The top of the workbench (1) is provided with a detection mechanism (2) for detecting the uniformity of ink color on printed paper, and lighting components (3) to improve the detection effect are provided on both sides of the detection mechanism (2). The detection mechanism (2) includes a support frame (201) bolted to the opposite side walls of the workbench (1). A groove (202) is provided on the inner top wall of the support frame (201). A lead screw (203) is rotatably connected inside the groove (202). A servo motor (204) is bolted to the outer wall of the support frame (201), and the output end of the servo motor (204) is coaxially arranged with one end of the lead screw (203). A protrusion is threaded onto the outside of the lead screw (203). (205), a colorimeter (206) is bolted to the bottom of the protrusion (205), and a support part (207) is fixedly connected to each of the four corners of the top of the workbench (1). A slide rod (208) is slidably connected inside the support part (207), and a pressure block (209) is fixedly connected to the bottom of the slide rod (208). A spring (210) is fixedly connected to the top of the pressure block (209), and a display screen (211) is bolted to the side wall of the support frame (201).
2. The online ink uniformity tester for printed matter according to claim 1, characterized in that, The lighting assembly (3) includes two extension rods (301) fixedly connected to the side wall of the support frame (201), and a rotating rod (302) is rotatably connected inside each of the two extension rods (301). A lighting lamp (303) is rotatably connected between the two rotating rods (302).
3. The online ink uniformity tester for printed matter according to claim 2, characterized in that, A circular plate (4) is fixedly connected to the side wall of the rotating rod (302) away from the lighting lamp (303). A first toothed groove (5) is provided on the periphery of the circular plate (4). A rectangular rod (6) is fixedly connected to the side wall of the extension rod (301). A sliding plate (7) is slidably connected to the outside of the rectangular rod (6). A positioning cover (8) is fixedly connected to one end of the sliding plate (7). A second toothed groove (9) is provided on the inner wall of the positioning cover (8). The first toothed groove (5) and the second toothed groove (9) are used in conjunction.
4. The online ink uniformity tester for printed matter according to claim 1, characterized in that, An arc-shaped baffle (10) is fixedly connected to the inner top wall of the support (207) to prevent the printing paper from being clamped by the spring (210). The height of the arc-shaped baffle (10) is less than the height of the support (207).
5. The online ink uniformity tester for printed matter according to claim 1, characterized in that, A limiting rod (11) is fixedly connected to the outer wall of the slide rod (208), and a limiting groove (12) is opened at the top of the support part (207). The limiting rod (11) and the limiting groove (12) are slidably connected.
6. The online ink uniformity tester for printed matter according to claim 1, characterized in that, A stabilizing rod (13) is fixedly connected to the inner wall of the groove (202). One end of the stabilizing rod (13) passes through the protrusion (205) and is slidably connected to the protrusion (205).
7. The online ink uniformity tester for printed matter according to claim 2, characterized in that, The lighting lamp (303) is a D65 standard light source.