High-efficiency printing proofing assist device

Abstract

The utility model relates to the technical field of printing processing equipment, and discloses a high-efficiency printing proofing assist device, which comprises a paper delivery mechanism, a paper collection mechanism, a proofing mechanism and an air drying inspection mechanism, the paper delivery mechanism comprises a paper delivery roller, two paper delivery supports and two paper delivery spring seats, the paper collecting mechanism comprises a paper collecting roller, two paper collecting supports and two paper collecting spring seats. According to the auxiliary device, stable supply and efficient collection of paper are achieved through the paper outlet mechanism and the paper collecting mechanism, the distance between a rubber pressing pad and proofing paper is adjusted through sliding of two limiting plates through the proofing mechanism, and it is guaranteed that the paper is stably conveyed on a conveying belt in the proofing process; ink is rapidly air-dried through two fans arranged on the air-drying inspection mechanism to improve the inspection efficiency, meanwhile, uniform illumination is provided through a plurality of illuminating lamps, the inspection precision of a printed sample is improved, and the visual presentation effect of a final product is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of printing and processing equipment technology, and in particular to a high-efficiency printing proofing aid. Background Technology

[0002] The book printing process typically includes steps such as design, typesetting, proofing, plate making, proofing, printing, and binding. Proofing is a crucial step in this process, allowing publishers and designers to check and confirm the final appearance of the book before mass production, including colors, fonts, images, and layout, ensuring the printed product meets expectations. A proofing aid is a tool or device used to assist in the proofing process during printing, helping to create a sample before actual printing to ensure that colors, layout, and design meet expectations. It is typically used for proofreading and adjustments to avoid errors in mass production. In the printing industry, efficient proofing aids that quickly and accurately complete proofing can save time and costs while improving product quality and customer satisfaction.

[0003] A search revealed an existing patent (publication number: CN220562357U) that discloses a "printing proofing aid, including a proofing aid roller and a proofing aid frame." This utility model utilizes a proofing aid roller. In practical use, the operator can wrap the plastic film to be proofed with color around the surface of the proofing aid roller, insert both ends of the plastic film into the roller slots, and press it firmly using the roller clips. At this point, the roller clips will be flush with the surface of the proofing aid roller, ensuring that the subsequent ink transfer will not deviate. The entire device uses a small roller-type tool that, upon contact with the rolling plate, directly transfers the ink onto the plastic film, allowing for quick confirmation of the color transfer effect. Furthermore, the tool used simplifies the entire color transfer process, improving efficiency and reducing costs. It boasts advantages such as high efficiency, low cost, convenient transfer confirmation, and simple structure.

[0004] In the process of developing this application, the inventors discovered the following problems with the prior art: Although the aforementioned comparative patent provides a printing proofing aid for color matching and proofing of plastic film by setting a proofing aid roller and a proofing aid frame, it does not have a mechanism for curing ink, and the color comparison is performed on the proofing aid roller, which affects the accuracy of the comparison. At the same time, the surface area of ​​the proofing aid roller is limited, and the operation of changing plastic film needs to be performed relatively frequently, increasing the workload of the operator. Therefore, those skilled in the art have provided a high-efficiency printing proofing aid to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-efficiency printing proofing aid. This aid achieves stable paper supply and efficient collection through a paper output mechanism and a paper receiving mechanism, significantly reducing the frequency of manual paper changes. The proofing mechanism uses two limiting plates to slide and adjust the distance between the rubber pressure pad and the proofing paper, ensuring stable paper transport on the conveyor belt during the proofing process. The drying and inspection mechanism is equipped with two fans to quickly dry the ink, preventing ink blurring and ensuring uniform ink color, reducing paper deformation and improving inspection efficiency. At the same time, multiple lights provide uniform illumination, improving the inspection accuracy of printed samples, helping to promptly detect and correct printing defects, thereby improving the overall quality of proofing and ensuring the visual presentation of the final product.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency printing proofing auxiliary device, comprising a paper output mechanism, a paper receiving mechanism, a proofing mechanism, and a drying inspection mechanism. The paper output mechanism includes a paper output roller, two paper output supports, and two paper output spring seats. The paper receiving mechanism includes a paper receiving roller, two paper receiving supports, and two paper receiving spring seats. The proofing mechanism includes two horizontally placed L-shaped blocks, four sliding plates, two limiting plates, two transmission rollers, a conveyor belt, two first bevel gears, and two second bevel gears. The drying inspection mechanism includes a drying frame, two fans, an observation window, and multiple lighting lamps.

[0007] The lower ends of the two paper output brackets are respectively fixed inward to the outer side of the two horizontal L-shaped blocks near the upper front position, and the lower ends of the two paper receiving brackets are respectively fixed inward to the outer side of the two horizontal L-shaped blocks near the upper rear position. The two drive rollers respectively rotatably connect their two ends to the inner sides of the two horizontal L-shaped blocks near the upper front position and the inner sides of the two horizontal L-shaped blocks near the lower front position. The two limiting plates are respectively slidably disposed between the two upper and lower sides of the four slide plates on both sides of the two drive rollers.

[0008] Through the above technical solution, the paper output mechanism provides a stable, fast, and continuous output of proofing paper; the paper collection mechanism collects the printed proofing paper properly; the proofing mechanism keeps the proofing paper provided by the paper output mechanism neatly for printing proofing and transmits the printed proofing paper to the paper collection mechanism; the air-drying and inspection mechanism air-dries the ink on the printed proofing paper according to actual needs and inspects it under a light source. This auxiliary device, through efficient and stable paper output and air-drying inspection, as well as an effective paper collection system, ensures the neatness, continuity, and quality control of the proofing paper during the proofing process, while also facilitating quick inspection of proofing results by operators and improving work efficiency.

[0009] Furthermore, the upper ends of the two paper output brackets are respectively fixed inward to the outer side of the two paper output spring seats near the front center position, and the inner plugs of the two paper output spring seats are respectively snapped into the grooves of corresponding sizes at the center of both ends of the paper output roller;

[0010] Through the above technical solution, the two paper output brackets provide good fixation for the two paper output spring seats. By pressing the two paper output spring seats to retract the spring damper, the paper output roller can be easily removed to replace the proofing paper.

[0011] Furthermore, the upper ends of the two paper receiving brackets are respectively fixed inward to the outer side of the two paper receiving spring seats near the front center position, and the inner plugs of the two paper receiving spring seats are respectively snapped into the grooves of corresponding size at the center of both ends of the paper receiving roller;

[0012] Through the above technical solution, the two paper receiving brackets provide good fixation for the two paper receiving spring seats. The paper receiving roller can be easily removed by pressing the two paper receiving spring seats to retract the spring damper, so as to replace the proofing paper after printing.

[0013] Furthermore, the conveyor belt is rotatably mounted on the surfaces of the two drive rollers, and the rear ends of the four slide plates are respectively fixed to the front ends of the two horizontal L-shaped blocks near the upper and lower edges.

[0014] Through the above technical solution, an annular groove is provided in the middle of the two transmission roller bodies, and a convex strip of the same size is fixedly provided in the middle of the inner surface of the conveyor belt. The convex strip is well engaged in the annular groove, effectively preventing the conveyor belt from falling out of the correct position. The four sliding plates provide good sliding grooves for the two limiting plates.

[0015] Furthermore, each of the two horizontally placed L-shaped blocks has a lead screw rotatably mounted near its outer end. The front ends of the two lead screws are threaded through and connected to the middle of the two limiting plates near the outer side. The rear ends of the two lead screws are fixedly mounted to the center of the front ends of the two first bevel gears. Rubber pressure pads are fixedly mounted on the inner sides of the two limiting plates via connecting rods.

[0016] With the above technical solution, as the two lead screws rotate, the two limiting plates that are threaded to them slide smoothly in the grooves provided by the four sliding plates. The rubber pad slides with the two limiting plates and stably restricts the proofing paper on the surface of the conveyor belt as needed. While not affecting the movement of the proofing paper with the conveyor belt, it stabilizes the relative position of the proofing paper and the conveyor belt, thereby ensuring the proofing effect of the printing machine.

[0017] Furthermore, the two horizontally placed L-shaped blocks are rotatably connected to a rotating shaft through the middle of the thin plate near the rear end on both sides. One end of the rotating shaft is fixedly connected to the center of one of the two second bevel gears, and the other end of the rotating shaft is fixedly connected to a rocker handle. The center of the other of the two second bevel gears is fixedly connected to the rotating shaft body near the rocker handle. The two first bevel gears mesh with the two second bevel gears.

[0018] With the above technical solution, when in use, the operator shakes the handle, and the two second bevel gears rotate with the shaft, which in turn drives the two first bevel gears that are well meshed with them to rotate, and the two lead screws rotate with the two first bevel gears.

[0019] Furthermore, the drying frame is fixedly mounted on both sides of the two horizontal L-shaped blocks near the inner side of the thin plate at the rear edge, and the two fans are axially symmetrically mounted through and fixed inside the drying frame.

[0020] Through the above technical solution, the two fans quickly dry the proofing paper after printing, which prevents ink from becoming blurred by accelerating ink drying, while improving ink uniformity and reducing paper deformation, thereby improving inspection efficiency and ensuring the quality and production efficiency of printed products.

[0021] Furthermore, the lower end of the observation window is fixedly disposed on the upper end of the drying frame and the upper rear end of the two horizontal L-shaped blocks near the rear end thin plate. The rear ends of the two paper output spring seats and the two paper receiving spring seats are fixedly disposed on the front end of the observation window near the two side edges. The multiple lighting lamps are evenly fixedly disposed on the inner side frame of both sides of the observation window.

[0022] With the above technical solution, multiple lighting lamps are evenly arranged on the inner side frame of both sides of the observation window, providing sufficient light and uniform lighting conditions for the inspection of the proof, which helps to improve the inspection accuracy of the printed samples, ensure that defects in printing can be detected and corrected in a timely manner, thereby improving the proof quality and ensuring the visual presentation effect of the final product.

[0023] This utility model has the following beneficial effects:

[0024] 1. This utility model proposes a high-efficiency printing proofing auxiliary device. The auxiliary device provides a stable, continuous and sufficient supply of proofing paper through the paper output roller of the paper output mechanism, and collects the proofing paper after printing proofing in a unified and good manner through the paper collection roller of the paper collection mechanism. It eliminates the need for frequent manual replacement of proofing paper, reduces the need for frequent manual paper replacement, and significantly improves the automation level and work efficiency of the proofing process.

[0025] 2. This utility model proposes a high-efficiency printing proofing auxiliary device. The auxiliary device uses rubber pads connected by two limiting plates of the proofing mechanism. The distance between the rubber pads and the proofing paper is adjusted by shaking the handle and rotating the screw according to the size and thickness of the proofing paper. This ensures that the relative position of the proofing paper and the conveyor belt is stable without affecting the movement of the proofing paper with the conveyor belt, thereby ensuring the proofing effect of the printing press and improving the proofing progress and production efficiency.

[0026] 3. This utility model proposes a high-efficiency printing proofing auxiliary device. This auxiliary device uses two fans equipped with an air-drying inspection mechanism to quickly dry the printed proofing paper, accelerate the ink drying process, effectively prevent ink blurring, ensure ink uniformity, reduce paper deformation, improve inspection efficiency, and ensure the quality and production efficiency of printed products. In addition, multiple lights in the air-drying inspection mechanism are evenly installed on the inner frame of both sides of the observation window, providing sufficient and uniform lighting for proofing inspection. This helps to improve the inspection accuracy of printed samples, enabling defects in printing to be detected and corrected in a timely manner, thereby improving the overall quality of proofing and ensuring the visual presentation effect of the final product. Attached Figure Description

[0027] Figure 1 This is an isometric schematic diagram of the present invention;

[0028] Figure 2 This is a front view schematic diagram of the present invention;

[0029] Figure 3 This is a rear view schematic diagram of the present invention;

[0030] Figure 4 This is a side view of the present invention.

[0031] Legend:

[0032] 1. Paper output mechanism; 2. Paper delivery mechanism; 3. Proofing mechanism; 4. Drying and inspection mechanism; 101. Paper output roller; 102. Paper output bracket; 103. Paper output spring seat; 201. Paper delivery roller; 202. Paper delivery bracket; 203. Paper delivery spring seat; 301. Horizontal L-shaped block; 302. Slide plate; 303. Limiting plate; 304. Drive roller; 305. Conveyor belt; 306. First bevel gear; 307. Second bevel gear; 401. Drying frame; 402. Fan; 403. Observation window; 404. Lighting lamp. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figure 1-4 This utility model provides an embodiment of a high-efficiency printing proofing aid, comprising a paper output mechanism 1, a paper receiving mechanism 2, a proofing mechanism 3, and a drying inspection mechanism 4. The lower ends of two paper output brackets 102 are respectively fixedly arranged inward to the outer side of two horizontal L-shaped blocks 301 near the upper front position. The lower ends of two paper receiving brackets 202 are respectively fixedly arranged inward to the outer side of two horizontal L-shaped blocks 301 near the upper rear position. Two drive rollers 304 respectively rotatably connect their two ends to the inner sides of the two horizontal L-shaped blocks 301 near the upper front position and the inner sides of the two horizontal L-shaped blocks 301 near the lower front position. Two limiting plates 303 are respectively slidably arranged between the two upper and lower sides of four sliding groove plates 302 on both sides of the two drive rollers 304.

[0035] The paper output mechanism 1 provides a stable, fast, and continuous output of proofing paper. The paper collection mechanism 2 collects the printed proofing paper properly. The proofing mechanism 3 keeps the proofing paper provided by the paper output mechanism 1 neatly arranged for printing proofing and then transfers the printed proofing paper to the paper collection mechanism 2. The air-drying and inspection mechanism 4 air-dries the ink on the printed proofing paper according to actual needs and inspects it under a light source. This auxiliary device, through efficient and stable paper output and air-drying inspection, as well as an effective paper collection system, ensures the neatness, continuity, and quality control of the proofing paper during the proofing process. At the same time, it facilitates operators to quickly check the proofing results and improves work efficiency.

[0036] The paper output mechanism 1 includes a paper output roller 101, two paper output brackets 102, and two paper output spring seats 103. The upper ends of the two paper output brackets 102 are respectively fixedly installed inward to the outer side of the two paper output spring seats 103 near the front center. The inner plugs of the two paper output spring seats 103 are respectively snapped into the grooves of corresponding sizes at the centers of both ends of the paper output roller 101. The two paper output brackets 102 provide a good fixing effect for the two paper output spring seats 103. The paper output roller 101 can be easily removed by pressing the two paper output spring seats 103 to retract the spring damper and replace the proofing paper.

[0037] The paper receiving mechanism 2 includes a paper receiving roller 201, two paper receiving brackets 202, and two paper receiving spring seats 203. The upper ends of the two paper receiving brackets 202 are fixedly mounted inward to the outer side of the two paper receiving spring seats 203 near the front center. The inner plugs of the two paper receiving spring seats 203 are respectively snapped into the grooves of corresponding sizes at the centers of both ends of the paper receiving roller 201. The two paper receiving brackets 202 provide a good fixing effect for the two paper receiving spring seats 203. The paper receiving roller 201 can be easily removed by pressing the two paper receiving spring seats 203 to retract the spring damper, so as to replace the proofing paper after printing.

[0038] The sampling mechanism 3 includes two horizontally placed L-shaped blocks 301, four sliding plates 302, two limiting plates 303, two drive rollers 304, a conveyor belt 305, two first bevel gears 306, and two second bevel gears 307. The conveyor belt 305 is rotatably mounted on the surface of the two drive rollers 304. An annular groove is provided in the middle of the cylinder of the two drive rollers 304. A convex strip of the same size is fixedly provided in the middle of the inner surface of the conveyor belt 305. The convex strip is well engaged in the annular groove to effectively prevent the conveyor belt 305 from falling out of the correct position. The rear ends of the four sliding plates 302 are respectively fixedly mounted on the front end of the two horizontally placed L-shaped blocks 301 near the upper edge and near the lower edge. The four sliding plates 302 provide good sliding grooves for the two limiting plates 303.

[0039] Two horizontal L-shaped blocks 301 are each rotatably mounted with lead screws near their outer ends. The front ends of the two lead screws are threaded through and connected to the middle of the two limiting plates 303 near their outer ends. The rear ends of the two lead screws are fixedly mounted to the center of the front ends of the two first bevel gears 306. Two horizontal L-shaped blocks 301 are rotatably mounted with rotating shafts near the middle of the rear thin plates on both sides. One end of the rotating shaft is fixedly connected to the center of one of the two second bevel gears 307, and the other end of the rotating shaft is fixedly connected to a crank handle. The center of the other of the two second bevel gears 307 is fixedly mounted to the shaft body near the crank handle. The two first bevel gears 306 and the two second bevel gears 307 are well meshed. In use, the operator shakes the crank handle, and the two second bevel gears 307 rotate with the rotating shaft, driving the two well-meshed first bevel gears 306 to rotate. The two lead screws rotate with the two first bevel gears 306.

[0040] Rubber pads are fixedly installed on the inner sides of the two limiting plates 303 by connecting rods. As the two lead screws rotate, the two limiting plates 303, which are threaded together, slide smoothly in the grooves provided by the four sliding plates 302. The rubber pads slide with the two limiting plates 303, and stabilize the proofing paper on the surface of the conveyor belt 305 as needed. While not affecting the movement of the proofing paper with the conveyor belt 305, the relative position of the proofing paper and the conveyor belt 305 is stabilized, thereby ensuring the proofing effect of the printing press.

[0041] The air-drying inspection mechanism 4 includes an air-drying frame 401, two fans 402, an observation window 403, and multiple lights 404. The air-drying frame 401 is fixedly mounted on both sides of two horizontally placed L-shaped blocks 301 near the inner side of the thin plate at the rear edge. The two fans 402 are axially symmetrically mounted inside the air-drying frame 401. The two fans 402 quickly air-dry the proofing paper after printing, which prevents ink blurring by accelerating ink drying, while improving ink uniformity and reducing paper deformation, thereby improving inspection efficiency and ensuring the quality of printed materials and production efficiency.

[0042] The lower end of the observation window 403 is fixedly mounted to the upper end of the drying frame 401 and to the upper rear end of the two horizontal L-shaped blocks 301 near the rear end of the thin plate. The rear ends of the two paper output spring seats 103 and the two paper delivery spring seats 203 are fixedly mounted to the front end of the observation window 403 near the two side edges. Multiple lighting lamps 404 are evenly fixedly mounted on the inner side frames of both sides of the observation window 403. The multiple lighting lamps 404 are evenly mounted on the inner side frames of both sides of the observation window 403, providing sufficient light and uniform lighting conditions for the inspection of the proof, which helps to improve the inspection accuracy of the printed samples, ensure that defects in printing can be detected and corrected in a timely manner, thereby improving the proof quality and ensuring the visual presentation effect of the final product.

[0043] Working principle: During use, the paper output roller 101 of the paper output mechanism 1 provides a stable, continuous, and sufficient supply of proofing paper. The paper receiving roller 201 of the paper receiving mechanism 2 collects the proofing paper after printing in a uniform and orderly manner. According to the size and thickness of the proofing paper, the distance between the rubber pads connected to the two limit plates 303 of the proofing mechanism 3 and the proofing paper is adjusted by shaking the crank and rotating the screw. This ensures that the relative position of the proofing paper and the conveyor belt 305 is stable without affecting the movement of the proofing paper with the conveyor belt 305. The two fans 402 equipped with the air drying and inspection mechanism 4 dry the printed paper. The sample paper is quickly air-dried to ensure ink uniformity and reduce paper deformation. Multiple lights 404 are evenly installed on the inner frame of both sides of the observation window 403 to provide sufficient and uniform lighting for checking the proof. This auxiliary device simplifies the manual steps of placing and collecting the proof paper through the paper output mechanism 1 and the paper collection mechanism 2, accurately stabilizes the relative position of the paper and the conveyor belt 305 through the proofing mechanism 3, and quickly air-dries the printed sample through the air-drying inspection mechanism 4 while providing uniform lighting, thus achieving an efficient, stable, and high-quality proofing process, and ultimately ensuring the consistency and visual presentation of the printed matter.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency printing proofing aid, comprising a paper output mechanism (1), a paper delivery mechanism (2), a proofing mechanism (3), and a drying inspection mechanism (4), characterized in that: The paper output mechanism (1) includes a paper output roller (101), two paper output supports (102) and two paper output spring seats (103); the paper receiving mechanism (2) includes a paper receiving roller (201), two paper receiving supports (202) and two paper receiving spring seats (203); the sample making mechanism (3) includes two horizontal L-shaped blocks (301), four sliding plates (302), two limiting plates (303), two transmission rollers (304), a conveyor belt (305), two first bevel gears (306) and two second bevel gears (307); the air drying inspection mechanism (4) includes an air drying frame (401), two fans (402), an observation window (403) and multiple lighting lamps (404). The lower ends of the two paper output brackets (102) are respectively fixedly disposed inward to the outer side of the two horizontal L-shaped blocks (301) near the upper front position. The lower ends of the two paper receiving brackets (202) are respectively fixedly disposed inward to the outer side of the two horizontal L-shaped blocks (301) near the upper rear position. The two drive rollers (304) respectively rotatably connect their two ends to the inner sides of the two horizontal L-shaped blocks (301) near the upper front position and the inner sides of the two horizontal L-shaped blocks (301) near the lower front position. The two limiting plates (303) are respectively slidably disposed between the two upper and lower sides of the four slide plates (302) on both sides of the two drive rollers (304).

2. The high-efficiency printing proofing aid according to claim 1, characterized in that: The upper ends of the two paper output brackets (102) are respectively fixed inward to the outer side of the two paper output spring seats (103) near the front center position, and the inner plugs of the two paper output spring seats (103) are respectively snapped into the grooves of corresponding size at the center of both ends of the paper output roller (101).

3. The high-efficiency printing proofing aid according to claim 1, characterized in that: The upper ends of the two paper receiving brackets (202) are respectively fixed inward to the outer side of the two paper receiving spring seats (203) near the front center position, and the inner plugs of the two paper receiving spring seats (203) are respectively snapped into the grooves of corresponding size at the center of both ends of the paper receiving roller (201).

4. The high-efficiency printing proofing aid according to claim 1, characterized in that: The conveyor belt (305) is rotatably mounted on the surfaces of the two drive rollers (304), and the rear ends of the four slide plates (302) are respectively fixed to the front ends of the two horizontal L-shaped blocks (301) near the upper edge and near the lower edge.

5. The high-efficiency printing proofing aid according to claim 1, characterized in that: Two horizontal L-shaped blocks (301) are respectively provided with lead screws rotatably through their front ends near the outer side. The front ends of the two lead screws are respectively threaded and connected to the middle of the two limiting plates (303) near the outer side. The rear ends of the two lead screws are respectively fixed to the center of the front end of the two first bevel gears (306). Rubber pressure pads are respectively fixed on the inner side of the two limiting plates (303) through connecting rods.

6. The high-efficiency printing proofing aid according to claim 1, characterized in that: Two horizontal L-shaped blocks (301) are rotatably connected to a rotating shaft through the middle of the thin plate near the rear end on both sides. One end of the rotating shaft is fixedly connected to the center of one of the two second bevel gears (307), and the other end of the rotating shaft is fixedly connected to a rocker arm. The center of the other of the two second bevel gears (307) is fixedly connected to the shaft body near the rocker arm. The two first bevel gears (306) mesh with the two second bevel gears (307).

7. The high-efficiency printing proofing aid according to claim 1, characterized in that: The air-drying frame (401) is fixedly mounted on both sides of the two horizontal L-shaped blocks (301) near the inner side of the thin plate at the rear edge. The two fans (402) are axially symmetrically mounted through and fixed inside the air-drying frame (401).

8. The high-efficiency printing proofing aid according to claim 1, characterized in that: The lower end of the observation window (403) is fixedly disposed on the upper end of the air-drying frame (401) and on the upper rear end of the two horizontal L-shaped blocks (301) near the rear end of the thin plate. The rear ends of the two paper output spring seats (103) and the two paper receiving spring seats (203) are fixedly disposed on the front end of the observation window (403) near the two side edges. The multiple lighting lamps (404) are evenly fixedly disposed on the inner side frame of both sides of the observation window (403).

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