Printing device capable of printing clearly

Abstract

The utility model belongs to the technical field of printing equipment, and particularly relates to a printing device capable of printing clearly, which comprises a rack, support structures are symmetrically arranged above the rack, a printing roller is rotatably arranged between the support structures, and a bottom roller is rotatably arranged below the printing roller; the ink supply structure is arranged above the printing roller and comprises an ink box and a brush, the ink box is arranged on the side wall of the rack, a cover plate and a paint box are hinged to the top of the ink box, the paint box is arranged above the printing roller, the two sides of the paint box are connected with the supporting structure, the brush is arranged below the paint box, and the brush is arranged below the paint box. The ink box can smear ink in the paint box to the surface of the printing roller, the feeding pump is arranged on the ink box, and a feeding pipe is arranged between the feeding pump and the paint box in a communicating mode; and the adsorption structure is arranged on the rack, located in front of the printing roller and used for cleaning the surface of the paper. And the effects that the surface of the paper can be cleaned, and the printing definition is improved are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of printing equipment, and in particular relates to a printing device with clear printing. Background Art

[0002] The roller screen printing device is a printing device widely used in the packaging, textile, advertising and decoration industries. This device uses a screen with fine pores through which ink is transferred to the substrate. During the printing process, some areas on the screen are blocked to form patterns or text, while the unblocked areas allow ink to pass through, thereby achieving accurate transfer of images and text.

[0003] Chinese utility model patent CN208452525U discloses a screen printing machine, including a casing, a feed port, a discharge port, a feed guide roller, an ink transfer roller, an embossing roller, an ink cartridge, a first drive motor, a discharge guide roller and a second drive motor, wherein the feed port is fixedly arranged on the bottom surface of the outer wall of the casing, the discharge port is fixedly arranged on the top of the outer wall of the casing, a feed guide roller is fixedly arranged on the bottom of the inner cavity of the casing, a guide roller is fixedly arranged on one side of the top of the feed guide roller, and the guide roller is specifically arranged in several groups, an ink transfer roller is fixedly arranged on one side of the guide roller, an embossing roller is fixedly arranged on the top of the ink transfer roller, and an ink cartridge is fixedly arranged on the bottom of the ink transfer roller.

[0004] However, during the printing process, dust or paper scraps on the surface of the paper are easy to fall down into the ink cartridge, causing ink contamination in the ink cartridge. The dust or paper scraps are easily connected with the ink and printed on the paper surface through the ink transfer roller. When drying through the drying structure, the paper scraps or dust are detached, resulting in unclear printing. Utility Model Content

[0005] The purpose of the utility model is to provide a printing device with clear printing in view of the above-mentioned technical problems, so as to achieve the effect of cleaning the surface of paper and improving the printing clarity.

[0006] In view of this, the utility model provides a printing device with clear printing, characterized by comprising:

[0007] A frame, wherein a supporting structure is symmetrically arranged above the frame, a printing roller is slidably arranged between the supporting structures, and a bottom roller is rotatably arranged below the printing roller;

[0008] An ink supply structure, which is arranged above the printing roller, comprises:

[0009] The ink cartridge is arranged on the side wall of the frame, and a cover plate is hingedly arranged on the top of the ink cartridge.

[0010] A pigment box, which is arranged above the printing roller and connected to the supporting structure on both sides.

[0011] A brush is provided below the paint box and can apply the ink in the paint box to the surface of the printing roller.

[0012] A feed pump, wherein the feed pump is arranged on the ink cartridge and is connected to the pigment cartridge via a feed pipe;

[0013] The adsorption structure is arranged on the frame and located before the printing roller to clean the surface of the paper.

[0014] In this technical solution, after the paper enters the printing device, it first passes through the adsorption structure to clean the surface. After the cleaning, the paper continues to move to the printing area. The bottom roller drives the paper to pass under the printing roller. The feed pump can transport the ink from the ink cartridge to the paint box. The brush evenly applies the ink in the paint box to the surface of the printing roller. As the printing roller rotates and the paper moves, the ink is transferred to the paper to complete the printing process. The adsorption structure is set to ensure the cleanliness of the paper surface during printing, thereby obtaining a clearer printing effect.

[0015] In the above technical solution, further, the adsorption structure includes:

[0016] An adsorption trough, which is arranged above the moving path of the paper and is arranged horizontally;

[0017] A filter box, wherein the filter box is arranged on the side wall of the frame, and an adsorption pipe is arranged between the top of the filter box and the adsorption tank;

[0018] A filter screen, wherein the filter screen is movably arranged in the filter box, and a limit strip is symmetrically arranged between the filter screen and the inner wall of the filter box;

[0019] A fan, the fan is arranged on the outer wall of the filter box, is located below the filter screen, and is connected to the filter box;

[0020] Wherein, a sealing door is hingedly provided on the front of the filter box.

[0021] In this technical solution, when the paper passes under the adsorption slot during movement, the fan starts to generate negative pressure, so that the adsorption slot cleans the surface of the paper, and dust and impurities are sucked into the adsorption slot with the airflow and transmitted to the filter box through the adsorption tube. The dust and impurities can be filtered through the provided filter screen, and the filtered air is discharged through the fan, and the dust or paper scraps on the surface of the paper are collected to avoid pollution to the working environment. Regularly opening the sealed door to clean and maintain the filter screen and dust accumulation inside the filter box is conducive to maintaining the normal working performance of the adsorption structure.

[0022] In the above technical solution, further, the support structure includes:

[0023] A support frame, the support frame is arranged above the frame, and a lifting slot is opened in the support frame;

[0024] A slider, the slider is slidably arranged in the lifting groove, and both ends of the printing roller are connected to the slider;

[0025] A fine-tuning structure, which is arranged above the slider and is used to adjust the distance between the printing roller and the bottom roller;

[0026] A lifting screw rod, which passes through the top of the support frame and is connected to the fine-tuning structure;

[0027] The lifting screw is threadedly connected to the top of the support frame, and a handle is provided on the top of the lifting screw.

[0028] In this technical solution, by turning the handle, the lifting screw can drive the slider to move up and down in the lifting slot, which is convenient for the equipment to print on papers of different thicknesses, which is conducive to improving the applicability of the device. In addition, the fine-tuning structure can automatically adjust the distance between the printing roller and the bottom roller within a small range, preventing the jumping caused by the film thickness of the screen during the printing process, making the text, pattern, and window clearer, and improving the printing quality.

[0029] In the above technical solution, further, the fine-tuning structure includes:

[0030] A fixing plate, the fixing plate is arranged above the slider, and the bottom end of the lifting screw rod is connected to the fixing plate;

[0031] A guide column, wherein the guide column is symmetrically arranged between the slider and the fixed plate, and a boss is arranged on the top of the guide column;

[0032] A spring, wherein the spring is sleeved on the guide column and is located between the slider and the bottom surface of the fixed plate;

[0033] Wherein, the guide column passes through the fixing plate and is slidably connected to the fixing plate.

[0034] In this technical solution, during the paper printing process, the distance between the printing roller and the bottom roller can be automatically adjusted within a small range through the cooperation between the spring, the slider, and the guide column, thereby preventing the jumping caused by the film thickness of the screen during the printing process, making the text, patterns, and windows clearer and improving the printing quality.

[0035] In the above technical solution, further, a drying structure is arranged above the frame, and the drying structure is arranged away from the adsorption structure.

[0036] In the above technical solution, further, the drying structure includes:

[0037] A drying box, wherein the drying box is arranged above the frame and away from the adsorption structure;

[0038] An air inlet slot is arranged at the top of the drying box, and heating plates are arranged on both side walls of the air inlet slot;

[0039] A fan, wherein the fan is arranged inside the air inlet slot and is located near the air inlet;

[0040] A filter plate, the filter plate is arranged on the end surface of the air inlet slot to filter the air;

[0041] The guide plate is tiltedly arranged in the drying box and is located directly below the air inlet slot.

[0042] In this technical solution, the cooperation between the fan and the filter plate can discharge the filtered air into the drying box, and the air can be heated by the heating plate before entering the drying box, which is conducive to improving the efficiency of ink drying. The guide plate arranged at an angle inside the drying box can guide the air blown into the drying box to flow evenly to the surface of the paper, ensuring that the printed paper can be dried quickly and evenly, improving the printing efficiency and ensuring the printing quality.

[0043] In the above technical solution, further, a magnet is provided on the end surface of the air inlet slot, and the magnet can adsorb the filter plate.

[0044] In this technical solution, operators do not need to use tools or perform tedious disassembly steps, and can complete loading and unloading work by simply moving closer to or further away from the magnet, thereby improving the maintenance efficiency of the equipment.

[0045] In the above technical solution, further, a transparent window is vertically arranged on the outer wall of the ink cartridge.

[0046] In the technical solution, the transparent window allows the operator to directly observe the remaining amount of ink in the ink cartridge without opening or disassembling the ink cartridge. This helps to know in time whether it is necessary to add ink or replace a new ink cartridge, thereby avoiding printing interruption due to lack of ink.

[0047] The beneficial effects of the utility model are:

[0048] 1. After the paper enters the printing device, it first passes through the adsorption structure to clean the surface. After cleaning, the paper continues to move to the printing area. The bottom roller drives the paper to pass under the printing roller. The feed pump can transport the ink from the ink cartridge to the pigment box. The brush evenly applies the ink in the pigment box to the surface of the printing roller. As the printing roller rotates and the paper moves, the ink is transferred to the paper to complete the printing process. The adsorption structure is set to ensure the cleanliness of the paper surface during printing, so as to obtain a clearer printing effect.

[0049] 2. Collect dust or paper scraps on the surface of the paper to avoid pollution to the working environment. Open the sealed door regularly to clean and maintain the filter screen and dust inside the filter box, which is conducive to maintaining the normal working performance of the adsorption structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0051] Figure 2 It is a three-dimensional schematic diagram of the utility model from another angle;

[0052] Figure 3 It is a cross-sectional view of the utility model;

[0053] Figure 4 It is a cross-sectional view of the filter box of the utility model;

[0054] Figure 5 It is a cross-sectional view of the fine-tuning structure of the utility model;

[0055] Figure 6 This utility model Figure 3 A magnified image of area A;

[0056] The symbols in the figure are:

[0057] 1. Frame; 2. Support structure; 201. Support frame; 202. Lifting slot; 203. Slider; 204. Lifting screw; 205. Handle; 3. Printing roller; 4. Bottom roller; 5. Ink supply structure; 501. Ink cartridge; 502. Cover plate; 503. Paint box; 504. Brush; 505. Feed pump; 506. Feed pipe; 6. Adsorption structure; 601. Adsorption slot; 602. Filter box; 603. Adsorption tube; 604. Fan; 605. Sealing door; 7. Fine-tuning structure; 701. Fixed plate; 702. Guide column; 703. Spring; 8. Drying structure; 801. Drying box; 802. Air inlet slot; 803. Heating plate; 804. Filter plate; 805. Fan; 806. Guide plate; 9. Magnet; 10. Transparent window. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0059] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0060] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0061] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0062] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0063] Embodiment 1:

[0064] Depend on Figure 1-Figure 6 As shown, this embodiment provides a printing device with clear printing, including: a frame 1, a support structure 2 is symmetrically arranged above the frame 1, a printing roller 3 is slidably arranged between the support structures 2, and a bottom roller 4 is rotatably arranged below the printing roller 3; an ink supply structure 5, the ink supply structure 5 is arranged above the printing roller 3, and includes: an ink cartridge 501, the ink cartridge 501 is arranged on the side wall of the frame 1, and a cover plate 502 is hingedly arranged on the top of the ink cartridge 501, a pigment box 503, the pigment box 503 is arranged above the printing roller 3, and the two sides are connected to the support structure 2, a brush 504, the brush 504 is arranged below the pigment box 503, and can apply the ink in the pigment box 503 to the surface of the printing roller 3, a feeding pump 505, the feeding pump 505 is arranged on the ink cartridge 501, and a feeding pipe 506 is arranged between the feeding pump 505 and the pigment box 503; an adsorption structure 6, the adsorption structure 6 is arranged on the frame 1, and is located before the printing roller 3, for cleaning the surface of the paper.

[0065] After the paper enters the printing device, it first passes through the adsorption structure 6 for surface cleaning. After cleaning, the paper continues to move to the printing area. The bottom roller 4 drives the paper to pass under the printing roller 3. The feed pump 505 can transport the ink from the ink cartridge 501 to the pigment box 503. The brush 504 evenly applies the ink in the pigment box 503 to the surface of the printing roller 3. As the printing roller 3 rotates and the paper moves, the ink is transferred to the paper, completing the printing process. The adsorption structure 6 is set to ensure the cleanliness of the paper surface during printing, thereby obtaining a clearer printing effect.

[0066] Furthermore, the adsorption structure 6 includes: an adsorption trough 601, which is erected above the moving path of the paper and is arranged horizontally; a filter box 602, which is arranged on the side wall of the frame 1, and an adsorption tube 603 is arranged between the top of the filter box 602 and the adsorption trough 601; a filter screen, which is movably arranged in the filter box 602, and limit strips are symmetrically arranged between the filter screen and the inner wall of the filter box 602; a fan 604, which is arranged on the outer wall of the filter box 602, located below the filter screen, and is connected to the filter box 602; wherein, a sealing door 605 is hinged on the front of the filter box 602.

[0067] When the paper passes under the adsorption slot 601 during the movement, the fan 604 starts to generate negative pressure, so that the adsorption slot 601 cleans the surface of the paper, and dust and impurities are sucked into the adsorption slot 601 with the airflow, and are transmitted to the filter box 602 through the adsorption tube 603. The dust and impurities can be filtered through the provided filter net, and the filtered air is discharged through the fan 604, and the dust or paper scraps on the surface of the paper are collected to avoid pollution to the working environment. The filter net and dust accumulation inside the filter box 602 are cleaned and maintained by opening the sealing door 605 regularly, which is conducive to maintaining the normal working performance of the adsorption structure 6.

[0068] Embodiment 2:

[0069] Depend on Figure 1-Figure 5 As shown, this embodiment provides a printing device with clear printing, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0070] Furthermore, the support structure 2 includes: a support frame 201, which is arranged above the frame 1, and a lifting groove 202 is opened in the support frame 201; a slider 203, which is slidably arranged in the lifting groove 202, and both ends of the printing roller 3 are connected to the slider 203; a fine-tuning structure 7, which is arranged above the slider 203 to adjust the distance between the printing roller 3 and the bottom roller 4; a lifting screw rod 204, which passes through the top of the support frame 201 and is connected to the fine-tuning structure 7; wherein the lifting screw rod 204 is threadedly connected to the top of the support frame 201, and a handle 205 is provided on the top of the lifting screw rod.

[0071] By turning the handle 205, the lifting screw 204 can drive the slider 203 to move up and down in the lifting slot 202, which is convenient for the device to print on papers of different thicknesses, and is conducive to improving the applicability of the device. In addition, the fine-tuning structure 7 can automatically adjust the distance between the printing roller 3 and the bottom roller 4 within a small range, preventing the jumping caused by the film thickness of the screen during the printing process, making the text, pattern, and window clearer, and improving the printing quality.

[0072] Furthermore, the fine-tuning structure 7 includes: a fixed plate 701, which is arranged above the slider 203, and the bottom end of the lifting screw 204 is connected to the fixed plate 701; a guide column 702, which is symmetrically arranged between the slider 203 and the fixed plate 701, and a boss is arranged on the top of the guide column 702; a spring 703, which is sleeved on the guide column 702 and located between the slider 203 and the bottom surface of the fixed plate 701; wherein the guide column 702 passes through the fixed plate 701 and is slidably connected to the fixed plate 701.

[0073] During the paper printing process, the distance between the printing roller 3 and the bottom roller 4 can be automatically adjusted within a small range through the cooperation between the spring 703, the slider 203, and the guide column 702, thereby preventing the jumping caused by the film thickness of the screen during the printing process, making the text, pattern, and window clearer and improving the printing quality.

[0074] Embodiment 3:

[0075] Depend on Figure 1-Figure 3 As shown, this embodiment provides a printing device with clear printing, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0076] Furthermore, a drying structure 8 is arranged above the frame 1, and the drying structure 8 is arranged away from the adsorption structure 6, and the drying structure 8 includes: a drying box 801, the drying box 801 is arranged above the frame 1 and away from the adsorption structure 6; an air inlet slot 802, the air inlet slot 802 is arranged at the top of the drying box 801, and heating plates 803 are arranged on both side walls of the air inlet slot 802; a fan 805, the fan 805 is arranged inside the air inlet slot 802, and is located near the air inlet; a filter plate 804, the filter plate 804 is arranged on the end face of the air inlet slot 802 to filter the air; a guide plate 806, the guide plate 806 is arranged obliquely in the drying box 801, and is located directly below the air inlet slot 802.

[0077] The fan 805 cooperates with the filter plate 804 to discharge the filtered air into the drying box 801, and the heating plate 803 heats the air before the air enters the drying box 801, which is beneficial to improving the efficiency of ink drying. The guide plate 806 tilted inside the drying box 801 can guide the air blown into the drying box 801 to flow evenly to the paper surface, ensuring that the printed paper can be dried quickly and evenly, improving the printing efficiency and ensuring the printing quality.

[0078] Furthermore, a magnet 9 is provided on the end surface of the air inlet slot 802 , and the magnet 9 can adsorb the filter plate 804 .

[0079] The operator does not need to use tools or perform complicated disassembly steps, and can complete the loading and unloading work by simply moving closer to or farther away from the magnet 9, thereby improving the maintenance efficiency of the equipment.

[0080] Furthermore, a transparent window 10 is vertically arranged on the outer wall of the ink cartridge 501 .

[0081] The transparent window 10 allows the operator to directly observe the remaining amount of ink in the ink cartridge 501 without opening or disassembling the ink cartridge 501. This helps to timely understand whether it is necessary to replenish ink or replace a new ink cartridge 501, thereby avoiding printing interruption due to lack of ink.

[0082] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A printing device with clear printing, characterized in that ,include: A frame (1), a support structure (2) is symmetrically arranged above the frame (1), a printing roller (3) is slidably arranged between the support structures (2), and a bottom roller (4) is rotatably arranged below the printing roller (3); An ink supply structure (5), the ink supply structure (5) being arranged above the printing roller (3), comprising: An ink cartridge (501), wherein the ink cartridge (501) is arranged on a side wall of the frame (1), and a cover plate (502) is hingedly arranged on the top of the ink cartridge (501), A pigment box (503), wherein the pigment box (503) is arranged above the printing roller (3) and connected to the supporting structure (2) on both sides, a brush (504), wherein the brush (504) is arranged below the paint box (503) and is capable of applying ink in the paint box (503) to the surface of the printing roller (3), A feed pump (505), wherein the feed pump (505) is disposed on the ink cartridge (501) and is connected to the pigment cartridge (503) via a feed pipe (506); An adsorption structure (6) is arranged on the frame (1) and located before the printing roller (3) for cleaning the surface of paper.

2. A printing device with clear printing according to claim 1, characterized in that: The adsorption structure (6) comprises: An adsorption groove (601), the adsorption groove (601) is erected above the moving path of the paper and is arranged horizontally; A filter box (602), wherein the filter box (602) is arranged on the side wall of the frame (1), and an adsorption pipe (603) is arranged between the top of the filter box (602) and the adsorption tank (601); A filter screen, the filter screen being movably arranged in the filter box (602), and limit strips being symmetrically arranged up and down between the filter screen and the inner wall of the filter box (602); A fan (604), wherein the fan (604) is arranged on the outer wall of the filter box (602), is located below the filter screen, and is connected to the filter box (602); Wherein, a sealing door (605) is hingedly provided on the front of the filter box (602).

3. A printing device with clear printing according to claim 1, characterized in that: The support structure (2) comprises: A support frame (201), the support frame (201) is arranged above the frame (1), and a lifting slot (202) is provided in the support frame (201); A slider (203), the slider (203) being slidably disposed in the lifting groove (202), and both ends of the printing roller (3) are connected to the slider (203); A fine-tuning structure (7), wherein the fine-tuning structure (7) is arranged above the slider (203) and is used to adjust the distance between the printing roller (3) and the bottom roller (4); A lifting screw rod (204), wherein the lifting screw rod (204) passes through the top of the support frame (201) and is connected to the fine-tuning structure (7); The lifting screw (204) is threadedly connected to the top of the support frame (201), and a handle (205) is provided on the top of the lifting screw.

4. A printing device with clear printing according to claim 3, characterized in that: The fine-tuning structure (7) comprises: A fixed plate (701), wherein the fixed plate (701) is arranged above the slider (203), and the bottom end of the lifting screw rod (204) is connected to the fixed plate (701); A guide column (702), wherein the guide column (702) is symmetrically arranged between the slider (203) and the fixing plate (701), and a boss is arranged at the top of the guide column (702); A spring (703), wherein the spring (703) is sleeved on the guide column (702) and is located between the slider (203) and the bottom surface of the fixed plate (701); The guide column (702) passes through the fixing plate (701) and is slidably connected to the fixing plate (701).

5. A printing device with clear printing according to claim 1, characterized in that: A drying structure (8) is arranged above the frame (1), and the drying structure (8) is arranged away from the adsorption structure (6).

6. A printing device with clear printing according to claim 5, characterized in that: The drying structure (8) comprises: A drying box (801), wherein the drying box (801) is arranged above the frame (1) and away from the adsorption structure (6); An air inlet slot (802), wherein the air inlet slot (802) is arranged at the top of the drying box (801), and heating plates (803) are arranged on both side walls of the air inlet slot (802); A fan (805), wherein the fan (805) is arranged inside the air inlet slot (802) and is located close to the air inlet; A filter plate (804), the filter plate (804) being arranged on the end surface of the air inlet slot (802) for filtering air; A guide plate (806), wherein the guide plate (806) is arranged obliquely in the drying box (801) and is located directly below the air inlet slot (802).

7. A printing device with clear printing according to claim 6, characterized in that: A magnet (9) is provided on the end surface of the air inlet slot (802), and the magnet (9) is capable of adsorbing the filter plate (804).

8. A printing device with clear printing according to claim 1, characterized in that: A transparent window (10) is vertically arranged on the outer wall of the ink cartridge (501).

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