Dead pixel detection device for medical dry-type thermosensitive film

Abstract

The invention relates to the technical field of film dead pixel detection, in particular to a medical dry-type thermosensitive film dead pixel detection device, comprising: a printing assembly comprising a printer body, a main body support arranged on the printer body, a printing support arranged on the main body support, and a printing part arranged on the printing support; the scanning assembly comprises a scanning frame arranged on the main body support, a monitoring module arranged in the scanning frame, a shooting module and a dead pixel detection module, and the dead pixel detection module and the shooting module are matched to identify and record dead pixels of the thermosensitive film; and the identification driving component is arranged on the scanning frame, so that a normal film can be detected after being printed, and the normal film can be hung in a hospital, so that the influence on the diagnosis and treatment process caused by misdiagnosis or unclear seeing of a doctor can be reduced through the normal film.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of film bad point detection, and particularly relates to a bad point detection device for medical dry-type thermal film. BACKGROUND

[0002] A modern medical digital thermal film printer usually comprises a thermal print head for providing printing energy, a plurality of thermal heating body units arranged linearly and in series on the thermal print head according to a certain resolution, and a driving chip corresponding to each thermal heating body unit. A heat-sensitive medium for recording image information is in frictional contact with the thermal print head in a direction perpendicular to the heating line of the thermal print head by applying a certain pressure through an elastic rubber roller. The thermal heating body units of the thermal print head generate Joule heat by applying corresponding pulse power, so as to convert the printing electric energy into heat energy. When the heat-sensitive medium is in contact with the thermal heating body units under the rotation driving of the elastic rubber roller, the heat energy generated by the thermal heating body units is transferred to the surface of the heat-sensitive medium. The heat-sensitive coating material of the heat-sensitive medium is chemically reacted or physically changed under the heat, so as to form a visible image information with a corresponding concentration on the heat-sensitive medium.

[0003] During the printing process of the medical film, due to the substrate defects, dust adsorption during coating, coating defects or scratches during the conveying process, etc., there will be bad points on the film. At the position of the bad points on the film, the image cannot be displayed, which leads to that the image effect does not meet the requirements, and even leads to misdiagnosis. SUMMARY

[0004] This section is intended to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the title of the application in order to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions cannot be used to limit the scope of the present application.

[0005] In view of the problems existing in the prior art bad point detection device for the medical dry-type thermal film, the present application is proposed.

[0006] Therefore, the present application aims to provide a bad point detection device for the medical dry-type thermal film.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: A bad pixel detection device for medical dry thermal film, comprising: a printing assembly, including a printer body, a main body bracket arranged on the printer body, a printing bracket arranged on the main body bracket, and a printing component arranged on the printing bracket; a scanning assembly, including a scanning frame arranged on the main body bracket, a monitoring module arranged within the scanning frame, a shooting module, and a bad pixel detection module, wherein the bad pixel detection module and the shooting module cooperate to identify and record bad pixels on the thermal film; and an identification drive component, wherein the identification drive component is arranged on the scanning frame.

[0008] As a preferred solution of the bad pixel detection device for medical dry thermal film described in the present invention, the printing component includes a first rotating block rotatably connected to a printing bracket, a second rotating block arranged on the first rotating block, and an extending bracket connecting several second rotating blocks.

[0009] As a preferred solution of the bad pixel detection device for medical dry thermal film described in the present invention, the shooting module includes a plurality of camera elements arranged on a scanning frame and an angle rotation component arranged on the camera element, the bad pixel detection module includes an infrared bad pixel detector arranged on the camera element, the camera element includes an industrial camera, and an information integration module is provided between the industrial camera and the infrared bad pixel detector.

[0010] As a preferred embodiment of the bad pixel detection device for medical dry thermal film of the present invention, the identification drive component includes a transport track arranged in a scanning frame, a detection plate slidably connected to the transport track, and a mounting block arranged at one end of the auxiliary ring near the water leakage groove, a matching groove for matching with the detection plate is formed at the lower end of the mounting block, a driving wheel is rotatably connected in the matching groove, a toggle piece is provided on the outer side of the driving wheel, and the toggle piece extends outward from the mounting block.

[0011] Wherein, the driving ring is provided with a driving member for driving the detection plate to slide.

[0012] As a preferred solution of the bad pixel detection device for medical dry thermal film described in the present invention, the driving member includes a first gear coaxially arranged with a driving ring, a connecting rod arranged on the driving ring, a second gear meshing with the first gear, and a third gear arranged on the connecting rod meshing with the second gear, a driving rod extending outward from the third gear, the other end of the driving rod being hinged to the side wall of the detection plate, a stepping motor being provided at the rear end of the driving ring, and a guide rail for guiding the detection plate being provided on the transport track.

[0013] As a preferred solution of the bad pixel detection device for medical dry thermal film described in the present invention, a grabbing suction cup is provided along the lower end of the detection plate, a conveying component connected to the printing component is provided on the transport track, and the conveying component includes an entrance provided on the drive ring, a first transmission roller and a second conveying roller provided on the transport track.

[0014] As a preferred solution of the bad pixel detection device for medical dry thermal film described in the present invention, the toggle plate includes a connecting plate connected to the driving wheel member, a sliding groove provided on the connecting plate, and an extending plate slidably connected to the sliding groove, an elastic member is provided between the extending plate and the sliding groove, the detection plate is provided with a buckle at one end close to the toggle plate, the extending plate is provided with a mating hook that cooperates with the buckle at one end close to the detection plate, a magnetic member is provided between the mating hook and the buckle, and a bent flange that cooperates with the mating hook is provided on the transport track.

[0015] As a preferred solution of the bad pixel detection device for medical dry thermal film of the present invention, a material discharge chute is provided on the transport track, and an opening and closing plate is provided in the material discharge chute.

[0016] Operational Procedure: During testing, the inspection system is pre-processed and the film is calibrated. The scanning component is activated, and the monitoring module is preheated. The scanning environment is maintained at a temperature of 23±2°C and a humidity of 45±5% RH to prevent artifacts caused by environmental fluctuations on thermal film. This setting is intended to create a favorable inspection environment for thermal film, as thermal film is sensitive to temperature and humidity. Exceeding the threshold can cause background color shift, affecting the accuracy of bad pixel detection.

[0017] Then, a shooting piece is used to perform a shooting action. After shooting, the bad pixels are intelligently identified and classified and marked. First, the bad pixel features are extracted: the bad pixel detection module adopts a dual-threshold detection algorithm, and finally the bad pixels are located and recorded, the coordinates of the identified bad pixels are marked (with pixel-level accuracy), a bad pixel distribution map is generated, and the bad pixel parameters are recorded at the same time. Among them, through the rotation of the stepper motor, the rotation of the first gear, the second gear and the third gear are driven, thereby driving the rotation of the entire drive ring. Then the drive rod on the third gear and the detection plate connected to the lower end will slide in the horizontal direction. While sliding, they will continuously grab the film from the matching slot and then move out of the matching slot. During the movement, the bad pixels of the film are monitored by the shooting piece. When normal film is detected, it is sent out normally from the outlet. If bad film is detected, the opening and closing plate opens, the grabbing suction cup puts down the film, and sends it out from the discharge chute.

[0018] This setting enables normal films to be tested after printing, because the present invention is hung in the hospital, and thus normal films can reduce the doctor's misdiagnosis or unclear vision that affects the diagnosis and treatment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort based on these drawings. Among them:

[0020] Figure 1 It is a schematic diagram of the overall structure of the bad point detection device for the medical dry-type heat-sensitive film of the present application.

[0021] Figure 2 It is a schematic diagram of the identification driving component of the bad point detection device for the medical dry-type heat-sensitive film of the present application.

[0022] Figure 3 It is an exploded state schematic diagram of the identification driving component of the bad point detection device for the medical dry-type heat-sensitive film of the present application.

[0023] Figure 4 It is a front view schematic diagram of the identification driving component of the bad point detection device for the medical dry-type heat-sensitive film of the present application.

[0024] Figure 5 It is a schematic diagram of the scanning assembly of the bad point detection device for the medical dry-type heat-sensitive film of the present application.

[0025] Figure 6 It is a schematic diagram of the toggle piece structure of the bad point detection device for the medical dry-type heat-sensitive film of the present application.

[0026] The drawings are explained as follows: 100, printing assembly; 101, printer body; 102, main body support; 103, printing support; 104, printing component; 200, scanning assembly; 201, scanning frame; 202, monitoring module; 203, bad point detection module; 204, shooting module; 204a, camera piece; 203a, infrared bad point detector; 103a, first rotating block; 103b, second rotating block; 103c, extending support; 300, identification driving component; 301, transportation track; 302, detection plate; 303, mounting block; 304, matching groove; 305, driving wheel piece; 306, toggle piece; 400, driving piece; 401, first gear; 402, second gear; 403, third gear; 404, driving rod; 404a, guide slide rail; 405, driving ring; 405a, outlet; 405b, connecting rod; 406, stepping motor; 407, grabbing suction cup; 408, conveying component; 408a, inlet; 408b, first conveying roller; 408c, second conveying roller; 306a, connecting plate; 306b, sliding groove; 306c, extending piece; 306d, elastic piece; 306e, buckle; 306f, matching hook; 500, blanking groove; 501, opening and closing plate. DETAILED DESCRIPTION

[0027] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0028] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without the specific details given herein. In other instances, well-known methods have not been described in detail in order to avoid unnecessarily obscuring the present application. Therefore, the specific details set forth hereinafter are merely exemplary and should not be construed as limiting the scope of the present application.

[0029] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is independent or alternative to other embodiments.

[0030] Thirdly, the present application is described in detail in conjunction with the schematic diagram. In the detailed description of the embodiments of the present application, the cross-sectional view of the device structure is partially enlarged without the general proportion for the convenience of description, and the schematic diagram is only an example, which should not limit the scope of protection of the present application herein. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual manufacture.

[0031] Reference Figures 1-6 For the embodiments of the present application, a kind of medical dry heat-sensitive film bad point detection device is provided, including printing assembly 100, in the embodiment, printing assembly 100 includes printer body 101, main body support 102 is arranged on printer body 101, printing support 103 is arranged on main body support 102, and printing component 104 is arranged on printing support 103, wherein main body support 102 is arranged in printer body 101, and a plurality of printing rollers are also arranged on main body support 102, printing rollers are used for printing operation, printing support 103 is the support frame structure used in cooperation with main body support 102, and printing component 104 is used for printing.

[0032] Further, the present application also includes scanning assembly 200, in the embodiment, scanning assembly 200 includes scanning frame 201 arranged on main body support 102, monitoring module 202 arranged in scanning frame 201, shooting module 204 and bad point detection module 203, bad point detection module 203 and shooting module 204 cooperate to identify and record the bad point of heat-sensitive film.

[0033] As preferred, in the embodiment, the photographing module 204 comprises a plurality of camera components 204a arranged on the scanning frame 201 and an angle rotating component arranged on the camera component 204a, the angle rotating component is a driving motor for controlling the rotation of the camera component 204a, in the embodiment, the bad point detection module 203 comprises an infrared bad point detector 203a arranged on the camera component 204a, in the embodiment, the camera component 204a comprises an industrial camera, and an information integration module is arranged between the industrial camera and the infrared bad point detector 203a.

[0034] When the detection is performed, first, the detection system is preprocessed and the film is calibrated, the scanning assembly 200 is started, the monitoring module 202 is preheated, the scanning environment temperature is ensured to be 23±2℃ and the humidity is ensured to be 45±5% RH, so as to avoid the false image of the heat-sensitive film due to the environmental fluctuation. The setting is to generate a good detection environment for the heat-sensitive film, because the heat-sensitive film is sensitive to temperature and humidity, and the color offset will be caused when the threshold is exceeded, which affects the bad point detection precision.

[0035] Then, the film is calibrated and placed, the film is laid on the anti-static glass table surface of the scanning frame 201, the edge is aligned and positioned in the card slot, the LED backlight source around the frame is started, and the light on the film surface is ensured to be uniform.

[0036] Further, the pressure sensor is arranged in the scanning frame 201, the film is detected whether to be flat, and if the deformation is greater than 0.5 mm, the automatic leveling mechanism is triggered.

[0037] Further, the monitoring module 202 is used for real-time monitoring, the monitoring module 202 collects the temperature and humidity data of the scanning area at a frequency of 10 Hz, and simultaneously detects the film surface temperature through the infrared sensor (error≤0.3℃), so as to prevent the heat-sensitive layer from being abnormally heated in the scanning process. Meanwhile, the data is synchronized: the monitoring data is transmitted to the main control module in real time, if the temperature fluctuation is greater than 1℃ or the humidity fluctuation is greater than 5% RH, the scanning is automatically paused and the environmental regulation is started.

[0038] The photographing action is performed by using the camera component 204a, the camera component 204a adopts a 12 million pixel industrial camera, cooperates with a f / 2.8 fixed focus lens (distortion rate<0.1%), and performs the line-by-line scanning photographing on the film at a resolution of 300 dpi, and the acquisition time of a single film is less than or equal to 5 seconds.

[0039] The line array scanning mode is adopted, cooperates with the translation table (moving accuracy±0.05 mm), ensures that the image is not spliced and dislocated, enables the multi-exposure mode (once for strong light and once for weak light), captures the details of different density areas, the bad point detection module 203 is preprocessed, receives the RAW format image output by the photographing module 204, performs the real-time noise reduction processing, and eliminates the influence of uneven light through the gray scale standardization.

[0040] After shooting, the bad points are intelligently identified and classified. First, the bad point feature extraction is performed: the bad point detection module 203 adopts a double threshold detection algorithm:

[0041] Set the density anomaly point: compared with the standard film gray scale image, extract the area with a gray deviation of more than 15% and an area of more than 0.1mm 2 (white point, black point); then through Canny edge detection, identify edge sawtooth, tearing (edge discontinuity length>1mm), hole (area>0.5mm 2 ), introduce a deep learning model (ResNet-18 pre-training), classify the bad point type (scratch, ink dot, thermal layer falling), and the accuracy is greater than or equal to 98%.

[0042] Finally, the bad point positioning and recording are performed. The coordinates of the identified bad points are marked (with a pixel-level accuracy), and a bad point distribution map is generated, and the bad point parameters are recorded.

[0043] Further, the present application also includes an identification driving component 300, which is arranged on the scanning frame 201.

[0044] Further, the printing component 104 includes a first rotating block 103a rotatably connected to the printing support 103, a second rotating block 103b arranged on the first rotating block 103a, and an extension support 103c connecting a plurality of second rotating blocks 103b.

[0045] Further, a driving ring 405 is arranged at one end of the main support 102, and a second cutting component is further arranged in the driving ring 405. In this embodiment, the identification driving component 300 includes a transportation track 301 arranged in the driving ring 405. The transportation track 301 is arranged in the horizontal direction. The driving ring 405 is arranged outside the transportation track 301, and the length direction of the transportation track 301 is also the diameter direction of the driving ring 405.

[0046] Further, a detection plate 302 is slidably connected to the transportation track 301 in the horizontal direction. The front end of the detection plate 302 abuts against the transportation track 301. Then, a mounting block 303 is arranged at one end of the transportation track 301. A matching groove 304 is formed in the mounting block 303 and matches the detection plate 302. A driving wheel component 305 is rotatably connected in the matching groove 304. A pushing piece 306 is arranged outside the driving wheel component 305. Then, the detection plate 302 can be slid into the matching groove 304. Meanwhile, a matching groove 304 is formed in the pushing piece 306 and matches the detection plate 302. Meanwhile, an abutting plate 306a is outwardly and obliquely extended at the groove opening of the matching groove 304. When the detection plate 302 enters the matching groove 304, it is pushed upward by the pushing piece 306, so that the detection plate 302 is inclined, and the film can enter the lower end of the detection plate 302.

[0047] In the embodiment, the toggle plate 306 comprises a connecting plate 306a connected with the driving wheel 305, a sliding groove 306b opened on the connecting plate 306a, and an extension plate 306c slidably connected in the sliding groove 306b, wherein the extension plate 306c and the sliding groove 306b are provided with an elastic member 306d, a buckle 306e is arranged on one end of the detection plate 302 close to the toggle plate 306, a matching hook 306f is arranged on the extension plate 306c and matches the buckle 306e, a magnetic member is arranged between the matching hook 306f and the buckle 306e, and a bent flange matching the matching hook 306f is arranged on the transportation track 301. When the detection plate 302 is close to the toggle plate 306, the matching hook 306f and the buckle 306e are attracted to each other, and with the movement of the detection plate 302, the matching hook 306f is separated from the bent flange. At this time, the extension plate 306c is retracted into the sliding groove 306b under the action of the spring, and then one end of the detection plate 302 is lifted to provide the film to enter.

[0048] Preferably, a guide rail 404a is arranged on the transportation track 301 to guide the detection plate 302.

[0049] Further, a driving member 400 is arranged on the driving ring 405 to drive the detection plate 302 to slide. In the embodiment, the driving member 400 comprises a first gear 401 arranged in the printer body 101, a connecting rod 405b arranged on the driving ring 405, a second gear 402 meshing with the first gear 401, and a third gear 403 arranged on the connecting rod 405b and meshing with the second gear 402. The third gear 403 has a driving rod 404 outwardly extending therefrom. The lower end of the driving rod 404 is provided with a guide shaft which matches the guide rail 404a, and the lower end of the driving rod 404 is rotationally connected with the detection plate 302. The rear end of the driving ring 405 is provided with a stepping motor 406. The reciprocating movement of the detection plate 302 is driven by the arrangement of the first gear 401, the second gear 402, the third gear 403, and the connecting rod 405b. The connecting rod 405b outwardly extends from the first gear 401 to connect the driving ring 405.

[0050] Preferably, an outlet 405a is opened on the driving ring 405,

[0051] Further, a grabbing suction cup 407 is arranged on the lower end of the detection plate 302. A conveying member 408 is arranged on the transportation track 301 and connected with the printing assembly 100. In the embodiment, the conveying member 408 comprises an entrance 408a opened on the driving ring 405, a first conveying roller 408b arranged on the transportation track 301, and a second conveying roller 408c.

[0052] As preferred, a discharging groove 500 is formed on the conveying track 301, and a start-stop plate 501 is arranged in the discharging groove 500.

[0053] Operation process: when detecting, first, calibrate the monitoring module 202 and the shooting module 204 with the film, start the scanning assembly 200, and ensure that the scanning environment temperature is 23±2 DEG C and the humidity is 45±5 % RH, so as to avoid that the thermal sensitive film generates false images due to environmental fluctuation. The setting is to generate a good detection environment for the thermal sensitive film, because the thermal sensitive film is sensitive to temperature and humidity, and exceeds the threshold value, which will cause the background color to deviate and affect the bad point detection precision.

[0054] Then, the shooting action is performed by using the camera 204a, and after shooting, the bad points are intelligently identified and classified and marked. First, the bad point feature extraction is performed: the bad point detection module 203 adopts a double threshold detection algorithm, finally, the bad point positioning and recording are performed, the coordinates of the identified bad points are marked (the precision reaches the pixel level), the bad point distribution map is generated, and the bad point parameters are recorded. Through the rotation of the stepping motor 406, the first gear 401, the second gear 402 and the third gear 403 are driven to rotate, so that the whole driving ring 405 is driven to rotate, then the driving rod 404 on the third gear 403 and the detection plate 302 connected at the lower end slide in the horizontal direction, continuously grab the film from the matching groove 304 when sliding, and then move out of the matching groove 304. In the moving process, the camera 204a is used to monitor the bad points of the film, when the normal film is monitored, the film is normally sent out from the outlet 405a, if the bad point film is monitored, the start-stop plate 501 is opened, the suction cup 407 is lowered to put down the film, and the film is sent out from the discharging groove 500.

[0055] The setting makes that the normal film can be detected after printing, because the film is hung in the hospital, and then the normal film can reduce the misdiagnosis of doctors or the influence on the diagnosis and treatment process due to unclearness.

[0056] It is important to note that the construction and arrangement of the application shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review the present disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in the present application. For example, elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of elements or positions can be altered or varied. Accordingly, all such modifications are intended to be included within the scope of the present application. The order or sequence of any process or method steps can be varied or re-sequenced without materially affecting the application. Any "apparatus" or "device" described herein can be used in combination with any other "apparatus" or "device" described herein. Any "method" steps described herein can be performed in any order or sequence unless otherwise specified. Any "means" clauses in the claims are intended to cover the structures described in the specification and their structural equivalents, and thus to cover all of the equivalent structures of those structures. Other substitutions, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present application. Accordingly, the present application is not limited to the particular embodiments described in the specification, but extends to all embodiments that would still fall within the scope of the appended claims.

[0057] Also, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation can not be described (i.e., those unrelated to the

[0058] It should be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions can be made. Such development efforts might be complex and time-consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.

[0059] It should be noted that the above-mentioned embodiments are only used to illustrate the technical solutions of the present application but not to limit the present application, and although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalent replaced without departing from the spirit and scope of the present application, and all of them should be covered in the scope of the claims of the present application.

Claims

1. A device for detecting bad pixels of medical dry thermal film, characterized in that: include: A printing assembly (100) comprises a printer body (101), a main body support (102) arranged on the printer body (101), a printing support (103) arranged on the main body support (102), and a printing component (104) arranged on the printing support (103); The scanning assembly (200) comprises a scanning frame (201) arranged on a main frame (102), a monitoring module (202) arranged in the scanning frame (201), a photographing module (204), and a bad pixel detection module (203), wherein the bad pixel detection module (203) cooperates with the photographing module (204) to identify and record bad pixels on the thermal film; An identification driving component (300) is provided on a scanning frame (201).

2. The device for detecting bad pixels of a medical dry thermal film according to claim 1, wherein: The printing component (104) comprises a first rotating block (103a) rotatably connected to a printing support (103), a second rotating block (103b) arranged on the first rotating block (103a), and an extending support (103c) connecting a plurality of second rotating blocks (103b).

3. The device for detecting bad pixels of a medical dry thermal film according to claim 1, wherein: The shooting module (204) includes a plurality of camera elements (204a) arranged on a scanning frame (201) and an angle rotation component arranged on the camera elements (204a); the bad point detection module (203) includes an infrared bad point detector (203a) arranged on the camera element (204a); the camera element (204a) includes an industrial camera; and an information integration module is provided between the industrial camera and the infrared bad point detector (203a).

4. The device for detecting bad pixels of a medical dry thermal film according to claim 1, wherein: The identification drive component (300) comprises a transport track (301) arranged in a scanning frame (201), a detection plate (302) slidably connected to the transport track (301), and a mounting block (303) arranged at one end of the transport track (301), wherein a matching groove (304) for matching with the detection plate (302) is provided at the lower end of the mounting block (303), a driving wheel (305) is rotatably connected in the matching groove (304), a toggle piece (306) is provided on the outer side of the driving wheel (305), and the toggle piece (306) extends outward from the mounting block (303), Wherein, a driving member (400) for driving the detection plate (302) to slide is provided on the driving ring (405).

5. The device for detecting bad pixels of a medical dry thermal film according to claim 4, wherein: The driving member (400) comprises a first gear (401) coaxially arranged with a driving ring (405), a connecting rod arranged on the driving ring (405), a second gear (402) meshed with the first gear (401), and a third gear (403) arranged on the connecting rod and meshed with the second gear (402); a driving rod (404) extending outward from the third gear (403); the other end of the driving rod (404) is hinged to the side wall of the detection plate (302); a stepping motor (406) is provided at the rear end of the driving ring (405); and a guide rail (404a) is provided on the transport track (301) for guiding the detection plate (302).

6. The device for detecting bad pixels of a medical dry thermal film according to claim 5, wherein: A grabbing suction cup (407) is provided along the lower end of the detection plate (302), and a conveying component (408) connected to the printing component (100) is provided on the transport track (301). The conveying component (408) includes an inlet (408a) provided on the drive ring (405), a first conveying roller (408b) and a second conveying roller (408c) provided on the transport track (301).

7. The device for detecting bad pixels of a medical dry thermal film according to claim 4, wherein: The toggle plate (306) comprises a connecting plate (306a) connected to the driving wheel (305), a sliding groove (306b) provided on the connecting plate (306a), and a protruding plate (306c) slidably connected to the sliding groove (306b); an elastic member (306d) is provided between the protruding plate (306c) and the sliding groove (306b); a buckle (306e) is provided at one end of the detection plate (302) close to the toggle plate (306); a matching hook (306f) matching with the buckle (306e) is provided at one end of the protruding plate (306c) close to the detection plate (302); a magnetic member is provided between the matching hook (306f) and the buckle (306e); and a bent flange matching with the matching hook (306f) is provided on the transport track (301).

8. The device for detecting bad pixels of a medical dry thermal film according to claim 4, wherein: A material discharge chute (500) is provided on the transport track (301), and an opening and closing plate (501) is provided in the material discharge chute (500).

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