Digital processing method of negative film and terminal

Abstract

The invention discloses a digital processing method of a negative film and a terminal, relates to the technical field of negative films, and solves the problem that the digital processing efficiency of a large batch of negative films with various sizes and a relatively long roll-shaped negative film is relatively low. The digital processing terminal of the negative film comprises a negative film scanner main body, a scanning cavity is formed in the negative film scanner main body, a slot extending to the outer surface of the negative film scanner main body is formed in one side of the inner wall of the scanning cavity, and a sliding table is inserted in the slot. According to the invention, through the multi-size negative film fixing mechanism, a plurality of negative films with different sizes can be fixed on the upper end surface of the negative film placing table during the same digital processing scanning operation, and through the roll-shaped negative film scanning device, a plurality of patterns on the same roll-shaped negative film can be scanned; according to the technical scheme, the digital processing efficiency of the device on multiple negative films of different sizes and roll-shaped negative films is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of negative films, and specifically to a digital processing method and terminal for negative films. Background Art

[0002] In traditional photography, a negative film is essentially a transparent film covered with a photosensitive chemical coating, which can record the light information reflected by an object through exposure; A digital processing terminal for negative films refers to a scanning device capable of digital processing of negative films. It can receive negative film information, and through a series of processing steps, convert the negative film into a digital image and transmit it to the cloud, a user's mobile phone or computer. Such a scanning device that can digitalize negative films can be called a digital processing terminal for negative films.

[0003] However, the existing digital processing terminals for negative films cannot fix negative films of various sizes during the same digital processing process. When using this device to scan a large number of historical negative films originally stored in archives or libraries, since these negative films have different sizes, the digital processing efficiency of this digital processing terminal for negative films in this situation is relatively low, and the existing digital processing terminals cannot perform continuous scanning operations on long roll-shaped negative films, and the scanning of this device for long roll-shaped negative films is relatively low. Therefore, it does not meet the existing requirements, and for this reason, we propose a digital processing method and terminal for negative films. Summary of the Invention

[0004] The purpose of the present invention is to provide a digital processing method and terminal for negative films to solve the problems in the above-mentioned background art, that is, the existing digital processing terminals for negative films cannot fix negative films of various sizes during the same digital processing process. When using this device to scan a large number of historical negative films originally stored in archives or libraries, since these negative films have different sizes, the digital processing efficiency of this digital processing terminal for negative films in this situation is relatively low, and the existing digital processing terminals cannot perform continuous scanning operations on long roll-shaped negative films, and the scanning of this device for long roll-shaped negative films is relatively low.

[0005] To achieve the above object, the present invention provides the following technical solution: A digital processing terminal for a negative film, comprising a main body of a negative film scanner. The interior of the main body of the negative film scanner contains a scanning chamber. One side of the inner wall of the scanning chamber is provided with a slot extending to the outer surface of the main body of the negative film scanner. A sliding table is inserted into the slot. A multi-size negative film fixing mechanism is fixed inside the sliding table. The multi-size negative film fixing mechanism includes a negative film placement table, a plurality of downward pressing fixing plates, and a plurality of movable elastic downward pressing mechanisms with the same number as the downward pressing fixing plates. The lower end surface of the downward pressing fixing plate is lower than the upper end surface of the negative film placement table. The movable elastic downward pressing mechanism can drive the downward pressing fixing plate to move parallel and pull the downward pressing fixing plate downward; One side of the slot is provided with a roll-shaped negative film scanning device fixedly installed on the outer surface of the main body of the negative film scanner. The roll-shaped negative film scanning device includes a conveyor belt, a first sponge cleaning sleeve, two strip plates, a plurality of side baffles, a plurality of downward pressing cylinders, a plurality of downward pressing rollers with the same number as the downward pressing cylinders, and a synchronous moving mechanism. The first sponge cleaning sleeve is sleeved on the outer surface of the conveyor belt; The two strip plates are respectively located on both sides above the first sponge cleaning sleeve. The plurality of side baffles are respectively fixed to the lower end surfaces of the two strip plates, and the lower end surfaces of the strip plates are in contact with the upper end surface of the first sponge cleaning sleeve; The plurality of downward pressing cylinders are respectively fixed inside the two strip plates. The plurality of downward pressing rollers are respectively fixed to the piston rods of the plurality of downward pressing cylinders. The lower end surface of the downward pressing roller is half a centimeter different from the upper end surface of the first sponge cleaning sleeve. The synchronous moving mechanism can move the two strip plates inward or outward synchronously.

[0006] Preferably, a chute is provided on both sides of the negative film placement table, and a sliding rod is fixed inside the chute.

[0007] Preferably, the movable elastic downward pressing mechanism includes two moving sleeves respectively movably sleeved on the outer surfaces of the two sliding rods. A cylindrical groove is provided inside the moving sleeve. A reset metal sleeve is provided on the lower side inside the cylindrical groove. A reset rod is connected to the axis of the reset metal sleeve. A reset spring is sleeved on the outer surface of the reset rod. The upper and lower end surfaces of the reset spring are respectively connected between the inner wall of the cylindrical groove and the upper end surface of the reset metal sleeve. The upper end surface of the reset rod is fixed to the downward pressing fixing plate located above it.

[0008] Preferably, a rubber strip is fixed to the lower end surface of the downward pressing fixing plate, and a plurality of protective stripes are provided on the lower end surface of the rubber strip; A handle is fixed to the upper end surface of the downward pressing fixing plate.

[0009] Preferably, the synchronous moving mechanism includes a strip-shaped metal shell. One side inside the strip-shaped metal shell is fixedly installed with an adjustment motor. The output shaft of the adjustment motor is connected to a transmission rotating shaft through a coupling. The outer surface of the transmission rotating shaft is fixedly sleeved with a first bevel gear. Both sides of the outer surface of the first bevel gear are meshed with a second bevel gear. The axis of the second bevel gear is connected with a threaded rod. One side of the outer surface of the threaded rod is installed with a concave rod through a threaded structure.

[0010] Preferably, the concave rod is integrally concave, and the two concave rods are respectively fixed to the two strip-shaped plates.

[0011] Preferably, one side of the lower end surfaces of the two strip-shaped plates is respectively provided with a strip-shaped groove. Inside the two strip-shaped grooves is a conveyor belt for cleaning the upper surface of a roll-shaped negative film. The outer surface of the conveyor belt for cleaning the upper surface of the roll-shaped negative film is fixedly sleeved with a second sponge cleaning sleeve; The outer side of the second sponge cleaning sleeve is fixedly provided with a concave fixing sleeve. The upper end surface of the concave fixing sleeve is fixedly connected with a plurality of support rods, and the upper end surfaces of the support rods are fixed to the strip-shaped metal shell.

[0012] Preferably, above the two strip-shaped plates, there are a plurality of metal rods fixed inside the strip-shaped metal shell. Both sides of the outer surface of the metal rods are sleeved with a support sleeve, and the two support sleeves sleeved on the outer surface of the same metal rod are respectively fixed to the two strip-shaped plates.

[0013] Preferably, one side of the outer surface of the negative film scanner main body is fixedly installed with a control panel, and both the roll-shaped negative film scanning device and the negative film scanner main body are electrically connected to the control panel.

[0014] Preferably, a method for using a digital processing terminal for negatives, the method includes the following steps; Step A: When there are multiple types of negatives with different sizes that need to be digitized, place the negatives of different sizes on the upper surface of the negative placement table in sequence from front to back. Then, pull up the first pressing and fixing plate from front to back until the lower surface of the rubber strip fixed to its lower surface is higher than the upper surface of the negative placed on the upper surface of the negative placement table. When the pressing and fixing plate is pulled up, it will squeeze the reset spring indirectly connected to it. After the lower surface of the rubber strip is higher than the upper surface of the negative, move it above the front end of the first negative from front to back. Then, release the pressing and fixing plate. After the pressing and fixing plate is released, through the reaction force of the squeezed reset spring, the pressing and fixing plate can be pulled down. When the rubber strip fixed to the lower surface of this pressing and fixing plate touches the upper surface of the front end face of the first negative from front to back, the front end of this negative can be fixed. Then, fix the rear end of the first negative from front to back in the same way. When both the front end and the rear end of this negative are fixed, this negative is completely fixed. Finally, fix the multiple negatives with different sizes placed on the upper surface of the negative placement table in the same fixing method; Step B: When digitizing a long roll-shaped negative, place the front end of it on the upper surface of the rear end of the first sponge cleaning sleeve fixedly sleeved on the outer surface of the conveyor belt. Then, use the synchronous movement mechanism to push multiple side baffles fixed to the lower surfaces of the two strip-shaped plates towards the roll-shaped negative in a square shape until they fit together. By pushing the side baffles fixed to the lower surfaces of the two strip-shaped plates, the roll-shaped negative can be positioned at the middle position on the upper surface of the first sponge cleaning sleeve and kept parallel to the first sponge cleaning sleeve; Step C: After the positioning operation of the roll-shaped negative is completed, start the pressing cylinder to push down the pressing roller until the lower surface of the pressing roller fits the upper surface of the roll-shaped negative to flatten the roll-shaped negative. Finally, drive the roll-shaped negative located between the first sponge cleaning sleeve and the pressing roller to move through the conveyor belt. When the pattern on the roll-shaped negative moves below the strip-shaped through hole, the pattern on this roll-shaped negative can be digitized through the scanning cavity.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. On one side of the negative film placing table for placing negative films, the present invention is provided with a plurality of downward pressing fixing plates connected to the movable elastic downward pressing mechanism. When the device needs to perform scanning operations on a large number of negative films of different sizes, various negative films are placed on the upper end surface in sequence from front to back. Then, two downward pressing fixing plates are pulled upward and respectively moved above the front and rear ends of the first negative film counted from front to back, and then released to fix this negative film. After that, all the remaining negative films are fixed through the above fixing method. Through the above technical solution, in the same digital processing process, negative films of various different sizes can be fixed on the upper end surface of the negative film placing table, thereby improving the processing efficiency of the device for a large number of negative films of different sizes; 2. When the present invention needs to perform digital processing operations on a relatively long roll-shaped negative film, the front end of the roll-shaped negative film is placed on the upper end surface of the rear end face of the first sponge cleaning sleeve. Then, through the roll-shaped negative film scanning device, it can automatically perform positioning and flattening operations, and move multiple images on the flattened roll-shaped negative film one by one to the lower end surface of the strip-shaped through hole, so as to continuously perform continuous digital processing operations on this relatively long roll-shaped negative film. Through the above technical solution, the processing efficiency of the device for relatively long roll-shaped negative films is thus improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the whole of the present invention; Figure 2 is a schematic side structural diagram of the whole of the present invention; Figure 3 For the present invention Figure 2 is an enlarged structural view of part A in the present invention; Figure 4 is a schematic side internal structural view of the whole of the present invention; Figure 5 For the present invention Figure 4 is an enlarged structural view of part B in the present invention; Figure 6 For the present invention Figure 5 is a schematic front internal structural view of part D in the present invention; Figure 7 is a schematic front view of the whole of the present invention; Figure 8 For the present invention Figure 7 is an enlarged structural view of part C in the present invention.

[0017] In the figure: 1. Main body of the negative film scanner; 2. Rolled negative film scanning device; 201. Conveyor belt; 202. First sponge cleaning sleeve; 203. Strip-shaped metal shell; 204. Strip-shaped plate; 205. Side baffle; 206. Adjusting motor; 207. Driving rotating shaft; 208. First bevel gear; 209. Second bevel gear; 210. Threaded rod; 211. Concave rod; 212. Strip-shaped groove; 213. Conveyor belt for cleaning the upper end surface of the rolled negative film; 214. Second sponge cleaning sleeve; 215. Concave fixing sleeve; 216. Strip-shaped through hole; 217. Pressing cylinder; 218. Pressing roller; 219. Metal rod; 220. Support sleeve; 3. Scanning chamber; 4. Slide table; 5. Negative film placement table; 6. Chute; 7. Slide rod; 8. Moving sleeve; 9. Cylindrical groove; 10. Pressing fixed plate; 11. Handle; 12. Rubber strip; 13. Reset metal sleeve; 14. Reset rod; 15. Reset spring; 16. Control panel; 17. Slot. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0019] Please refer to Figures 1 to 8 , an embodiment provided by the present invention: A digital processing terminal for negative films includes a main body 1 of the negative film scanner. The inside of the main body 1 of the negative film scanner contains a scanning chamber 3. One side of the inner wall of the scanning chamber 3 is provided with a slot 17 extending to the outer surface of the main body 1 of the negative film scanner. A slide table 4 is inserted into the slot 17. A multi-size negative film fixing mechanism is fixed inside the slide table 4. The multi-size negative film fixing mechanism includes a negative film placement table 5, a plurality of pressing fixed plates 10, and a movable elastic pressing mechanism with the same number as the pressing fixed plates 10. The lower end surface of the pressing fixed plate 10 is lower than the upper end surface of the negative film placement table 5. The movable elastic pressing mechanism can drive the pressing fixed plate 10 to move parallel and pull the pressing fixed plate 10 downward.

[0020] On both sides of the negative film placement table 5, there is a chute 6 provided, and a slide bar 7 is fixed inside the chute 6; the movable elastic pressing mechanism includes two moving sleeves 8 respectively movably sleeved on the outer surfaces of the two slide bars 7. Inside the moving sleeve 8, there is a cylindrical groove 9. At the lower side inside the cylindrical groove 9, there is a reset metal sleeve 13. The axis of the reset metal sleeve 13 is connected with a reset rod 14. A reset spring 15 is sleeved on the outer surface of the reset rod 14. The upper and lower end faces of the reset spring 15 are respectively connected between the inner wall of the cylindrical groove 9 and the upper end face of the reset metal sleeve 13, and the upper end face of the reset rod 14 is fixed to the pressing fixed plate 10 located above it; since the moving sleeve 8 indirectly connected to the pressing fixed plate 10 is movably sleeved on the outer surface of the slide bar 7, the pressing fixed plate 10 itself can move parallel along the slide bar 7.

[0021] A rubber strip 12 is fixed to the lower end face of the pressing fixed plate 10, and there are multiple protective stripes on the lower end face of the rubber strip 12; A handle 11 is fixed to the upper end face of the pressing fixed plate 10; when there are multiple types of negative films with different sizes that need to be digitized, place the negative films with different sizes from front to back on the upper end face of the negative film placement table 5 in sequence. Then, pull up the first pressing fixed plate 10 from front to back until the lower end face of the rubber strip 12 fixed to its lower end face is higher than the upper end face of the negative film placed on the upper end face of the negative film placement table 5. When the pressing fixed plate 10 is pulled up, the reset metal sleeve 13 connected to it through the reset rod 14 will move upward together and compress the reset spring 15. After the lower end face of the rubber strip 12 is higher than the upper end face of the negative film, move it above the front end of the first negative film from front to back, and then release the pressing fixed plate 10. When the pressing fixed plate 10 is released, through the reaction force of the compressed reset spring 15, the pressing fixed plate 10 can be pulled down. When the rubber strip 12 fixed to the lower end face of this pressing fixed plate 10 touches the upper end face of the front end face of the first negative film from front to back, the front end of this negative film can be fixed. Then, fix the rear end of the first negative film from front to back in the same way. When the front end and the rear end of this negative film are both fixed, this negative film is fixed. Finally, fix the multiple negative films with different sizes placed on the upper end face of the negative film placement table 5 in the same fixing method. Through the above technical solution, multiple negative films with different sizes can be fixed on the upper end face of the negative film placement table 5 during the same digitization process, thereby improving the processing efficiency of the device for a large number of negative films with different sizes; Through the handle 11 fixed to the upper end face of the pressing fixed plate 10, it is more convenient to pull up the pressing fixed plate 10 to perform the fixing operation; After all the negatives placed on the upper end surface of the negative placement table 5 are fixed, the slide table 4 with a multi-size negative fixing mechanism inside is pushed into the scanning chamber 3 through the slot 17, and then the negative scanner main body 1 is started to perform digital scanning processing operations on the fixed negatives, and the converted digital images are transmitted to the cloud, the user's mobile phone or the user's computer.

[0022] On one side of the slot 17, there is a roll-shaped negative scanning device 2 fixedly installed on the outer surface of the negative scanner main body 1. The roll-shaped negative scanning device 2 includes a conveyor belt 201, a first sponge cleaning sleeve 202, two strip plates 204, a plurality of side baffles 205, a plurality of pressing cylinders 217, a plurality of pressing rollers 218 with the same quantity as the pressing cylinders 217, and a synchronous moving mechanism. The first sponge cleaning sleeve 202 is sleeved on the outer surface of the conveyor belt 201; The two strip plates 204 are respectively located on both sides above the first sponge cleaning sleeve 202. A plurality of side baffles 205 are respectively fixed to the lower end surfaces of the two strip plates 204, and the lower end surfaces of the strip plates 204 are in contact with the upper end surface of the first sponge cleaning sleeve 202; A plurality of pressing cylinders 217 are respectively fixed inside the two strip plates 204, and a plurality of pressing rollers 218 are respectively fixed to the piston rods of the plurality of pressing cylinders 217. The lower end surface of the pressing roller 218 is half a centimeter different from the upper end surface of the first sponge cleaning sleeve 202. The synchronous moving mechanism can move the two strip plates 204 inwards or outwards synchronously. On one side of the outer surface of the negative scanner main body 1, a control panel 16 is fixedly installed, and both the roll-shaped negative scanning device 2 and the negative scanner main body 1 are electrically connected to the control panel 16; the roll-shaped negative scanning device 2 and the negative scanner main body 1 can be controlled through the control panel 16.

[0023] The synchronous moving mechanism includes a strip-shaped metal shell 203. On one side inside the strip-shaped metal shell 203, an adjustment motor 206 is fixedly installed. The output shaft of the adjustment motor 206 is connected to a transmission rotating shaft 207 through a coupling. A first bevel gear 208 is fixedly sleeved on the outer surface of the transmission rotating shaft 207. On both sides of the outer surface of the first bevel gear 208, a second bevel gear 209 is meshed. The center of the second bevel gear 209 is connected to a threaded rod 210. On one side of the outer surface of the threaded rod 210, a concave rod 211 is installed through a threaded structure; when it is necessary to perform digital processing operations on a relatively long roll of negative film, place the front end of it on the upper end surface of the rear end of the first sponge cleaning sleeve 202 fixedly sleeved on the outer surface of the conveyor belt 201. Then start the adjustment motor 206. The adjustment motor 206 can drive the connected transmission rotating shaft 207 and the first bevel gear 208 fixedly sleeved on the outer surface of the transmission rotating shaft 207 to rotate. When the first bevel gear 208 rotates, the two second bevel gears 209 meshed with it will rotate together. The rotating second bevel gear 209 can drive the threaded rod 210 connected to the center of the second bevel gear 209 to rotate synchronously.

[0024] The concave rod 211 is integrally concave, and the two concave rods 211 are respectively fixed to the two strip-shaped plates 204; since the two concave rods 211 respectively installed on the two threaded rods 210 through the threaded structure are respectively fixed to the two strip-shaped plates 204, the concave rod 211 itself cannot rotate. When the threaded rod 210 rotates, the concave rod 211 that is threadedly connected to it but cannot rotate itself will move inwards or outwards under the drive of the threaded structure. At this time, the two strip-shaped plates 204 move inwards synchronously. During the inward movement of the strip-shaped plates 204, a plurality of side baffles 205 fixed to the lower end surfaces of the two strip-shaped plates 204 will push towards the square of the roll of negative film until they are in mutual contact. Through the pushing of the side baffles 205, the roll of negative film can be positioned at the middle position of the upper end surface of the first sponge cleaning sleeve 202 and kept parallel to the first sponge cleaning sleeve 202; After the positioning operation of the roll of negative film is completed, start the downward pressing cylinder 217 to push the downward pressing roller 218 downwards until the lower end surface of the downward pressing roller 218 is in contact with the upper end surface of the roll of negative film, so as to flatten the roll of negative film. Finally, drive the roll of negative film located between the first sponge cleaning sleeve 202 and the downward pressing roller 218 to move through the conveyor belt 201. When the pattern on the roll of negative film moves below the strip-shaped through hole 216, the pattern on this roll of negative film can be digitally processed through the scanning cavity 3. Through the above technical solution, continuous digital processing operations can be performed on a relatively long roll of negative film, thereby improving the processing efficiency of the equipment for a relatively long roll of negative film; When the pressing cylinder 217 starts to push down the pressing roller 218 to flatten the roll-shaped negative film at the beginning, only the pressing cylinder 217 located above the negative film will start. The other pressing cylinders 217 will only start to flatten the roll-shaped negative film after the roll-shaped negative film is driven by the conveyor belt 201 to its lower side. By this operation method, it can be prevented that when the roll-shaped negative film is just driven by the conveyor belt 201, the front end of it is blocked by the rear end face of one of the pressing rollers 218, resulting in a large amount of roll-shaped negative film being blocked at a certain position and the situation of being driven occurs. Finally, the roll-shaped negative film after digital processing will pass over the first sponge cleaning sleeve 202 and be discharged from the rear end face of the negative film scanner body 1.

[0025] On one side of the lower end faces of the two strip plates 204, there is a strip groove 212 each. Inside the two strip grooves 212, there is a conveyor belt 213 for cleaning the upper end face of the roll-shaped negative film. The outer surface of the conveyor belt 213 for cleaning the upper end face of the roll-shaped negative film is fixedly sleeved with a second sponge cleaning sleeve 214. On the outer side of the second sponge cleaning sleeve 214, there is a concave fixing sleeve 215 fixedly arranged. On the upper end face of the concave fixing sleeve 215, there are a plurality of support rods fixedly connected, and the upper end faces of the support rods are fixed to the strip metal shell 203; during the process of the roll-shaped negative film moving on the first sponge cleaning sleeve 202, the lower end face of it can be cleaned by the first sponge cleaning sleeve 202. As the roll-shaped negative film moves, before being scanned, the upper end face of the roll-shaped negative film will contact the second sponge cleaning sleeve 214 fixed on the outer surface of the conveyor belt 213 for cleaning the upper end face of the roll-shaped negative film. The upper end face of the roll-shaped negative film can be cleaned by the second sponge cleaning sleeve 214. Through the above technical solution, before the roll-shaped negative film is scanned, the upper and lower end faces of it can be cleaned to ensure the quality of the scanned pattern. The conveyor belt 213 can be fixed at the current position by the concave fixing sleeve 215 located outside the conveyor belt 213.

[0026] Above the two strip plates 204, there are a plurality of metal rods 219 fixed inside the strip metal shell 203. On both sides of the outer surface of the metal rod 219, there is a support sleeve 220 sleeved respectively. And the two support sleeves 220 sleeved on the outer surface of the same metal rod 219 are respectively fixed to the two strip plates 204; by the support sleeve 220 fixedly arranged on the upper end face of the strip plate 204 and movably sleeved on the outer surface of the metal rod 219, the stability of the moving strip plate 204 can be ensured, preventing it from tilting, so as to prevent the roll-shaped negative film from being squeezed during the moving process.

[0027] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Accordingly, all changes that fall within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A digital processing terminal for a negative film, comprising a negative film scanner main body (1), characterized in that: The interior of the negative film scanner main body (1) contains a scanning chamber (3). On one side of the inner wall of the scanning chamber (3), there is a slot (17) extending to the outer surface of the negative film scanner main body (1). A sliding table (4) is inserted into the slot (17). A multi-size negative film fixing mechanism is fixed inside the sliding table (4). The multi-size negative film fixing mechanism includes a negative film placement table (5), a plurality of downward pressing fixing plates (10), and a plurality of movable elastic downward pressing mechanisms with the same number as the downward pressing fixing plates (10). The lower end surface of the downward pressing fixing plate (10) is lower than the upper end surface of the negative film placement table (5). The movable elastic downward pressing mechanism can drive the downward pressing fixing plate (10) to move parallelly and pull the downward pressing fixing plate (10) downward. On one side of the slot (17), there is a roll-shaped negative film scanning device (2) fixedly installed on the outer surface of the negative film scanner main body (1). The roll-shaped negative film scanning device (2) includes a conveyor belt (201), a first sponge cleaning sleeve (202), two strip plates (204), a plurality of side baffles (205), a plurality of downward pressing cylinders (217), a plurality of downward pressing rollers (218) with the same number as the downward pressing cylinders (217), and a synchronous moving mechanism. The first sponge cleaning sleeve (202) is sleeved on the outer surface of the conveyor belt (201). The two strip plates (204) are respectively located on both sides above the first sponge cleaning sleeve (202). A plurality of the side baffles (205) are respectively fixed to the lower end surfaces of the two strip plates (204), and the lower end surfaces of the strip plates (204) are in contact with the upper end surface of the first sponge cleaning sleeve (202). A plurality of the downward pressing cylinders (217) are respectively fixed inside the two strip plates (204). A plurality of the downward pressing rollers (218) are respectively fixed to the piston rods of the plurality of downward pressing cylinders (217). The lower end surface of the downward pressing roller (218) is half a centimeter different from the upper end surface of the first sponge cleaning sleeve (202). The synchronous moving mechanism can move the two strip plates (204) inward or outward synchronously.

2. The digital processing terminal for a negative film according to claim 1, characterized in that: On both sides of the negative film placement table (5), there is a chute (6). A slide rod (7) is fixed inside the chute (6).

3. The digital processing terminal for a negative film according to claim 2, characterized in that: The movable elastic downward pressing mechanism includes two moving sleeves (8) respectively movably sleeved on the outer surfaces of the two slide rods (7). A cylindrical groove (9) is provided inside the moving sleeve (8). A reset metal sleeve (13) is provided on the lower side inside the cylindrical groove (9). A reset rod (14) is connected to the axis of the reset metal sleeve (13). A reset spring (15) is sleeved on the outer surface of the reset rod (14). The upper and lower end surfaces of the reset spring (15) are respectively connected between the inner wall of the cylindrical groove (9) and the upper end surface of the reset metal sleeve (13). The upper end surface of the reset rod (14) is fixed to the downward pressing fixing plate (10) located above it.

4. A digital processing terminal for a negative film according to claim 1, characterized in that: A rubber strip (12) is fixed to the lower end surface of the downward pressing fixing plate (10), and a plurality of protective stripes are provided on the lower end surface of the rubber strip (12). A handle (11) is fixedly arranged on the upper end surface of the pressing fixed plate (10).

5. A digital processing terminal for a negative film according to claim 1, characterized in that: The synchronous moving mechanism includes a strip-shaped metal shell (203). On one side inside the strip-shaped metal shell (203), an adjustment motor (206) is fixedly installed. The output shaft of the adjustment motor (206) is connected to a transmission rotating shaft (207) through a coupling. A first bevel gear (208) is fixedly sleeved on the outer surface of the transmission rotating shaft (207). On both sides of the outer surface of the first bevel gear (208), a second bevel gear (209) is engaged. The axis of the second bevel gear (209) is connected to a threaded rod (210). On one side of the outer surface of the threaded rod (210), a concave rod (211) is installed through a threaded structure.

6. The digital processing terminal for a negative film according to claim 5, characterized in that: The concave rod (211) is integrally concave, and the two concave rods (211) are respectively fixed to the two strip-shaped plates (204).

7. A digitization processing terminal for a negative film according to claim 5, characterized in that: On one side of the lower end surfaces of the two strip-shaped plates (204), a strip-shaped groove (212) is provided. Inside the two strip-shaped grooves (212), there is a conveyor belt (213) for cleaning the upper end surface of a roll of negative film. A second sponge cleaning sleeve (214) is fixedly sleeved on the outer surface of the conveyor belt (213) for cleaning the upper end surface of the roll of negative film. A concave fixing sleeve (215) is fixedly arranged on the outer side of the second sponge cleaning sleeve (214). On the upper end surface of the concave fixing sleeve (215), a plurality of support rods are fixedly connected, and the upper end surfaces of the support rods are fixed to the strip-shaped metal shell (203).

8. A digital processing terminal for a negative film according to claim 5, characterized in that: Above the two strip-shaped plates (204), a plurality of metal rods (219) fixed inside the strip-shaped metal shell (203) are provided. On both sides of the outer surface of the metal rod (219), a support sleeve (220) is sleeved, and the two support sleeves (220) sleeved on the outer surface of the same metal rod (219) are respectively fixed to the two strip-shaped plates (204).

9. A digital processing terminal for a negative film according to claim 1, characterized in that: A control panel (16) is fixedly installed on one side of the outer surface of the negative film scanner main body (1), and both the roll of negative film scanning device (2) and the negative film scanner main body (1) are electrically connected to the control panel (16).

10. A method for using a digital processing terminal for a negative film, characterized in that: The usage method includes the following steps; Step A: When there are multiple types of negatives with different sizes that need to be digitized, place the negatives of different sizes on the upper surface of the negative placement table (5) in sequence from front to back. Then, pull up the first pressing and fixing plate (10) from front to back until the lower end surface of the rubber strip (12) fixed to its lower end surface is higher than the upper end surface of the negative placed on the upper surface of the negative placement table (5). When the pressing and fixing plate (10) is pulled up, it will squeeze the reset spring (15) indirectly connected to it. After the lower end surface of the rubber strip (12) is higher than the upper end surface of the negative, move it above the front end of the first negative from front to back, and then release the pressing and fixing plate (10). After the pressing and fixing plate (10) is released, due to the reaction force of the squeezed reset spring (15), the pressing and fixing plate (10) can be pulled down. When the rubber strip (12) fixed to the lower end surface of this pressing and fixing plate (10) touches the upper end surface of the front end face of the first negative from front to back, the front end of this negative can be fixed. Then, fix the rear end of the first negative from front to back in the same way. When the front end and the rear end of this negative are both fixed, this negative is fixed. Finally, fix the multiple negatives with different sizes placed on the upper surface of the negative placement table (5) in the same fixing method; Step B: When digitizing a long roll of negative, place the front end of the roll on the upper end surface of the rear end of the first sponge cleaning sleeve (202) fixedly sleeved on the outer surface of the conveyor belt (201). Then, use the synchronous movement mechanism to push the multiple side baffles (205) fixed to the lower end surfaces of the two strip plates (204) towards the roll of negative until they fit together. By pushing the side baffles (205) fixed to the lower end surfaces of the two strip plates (204), the roll of negative can be positioned at the middle position on the upper surface of the first sponge cleaning sleeve (202) and kept parallel to the first sponge cleaning sleeve (202); Step C: After the positioning operation of the roll of negative is completed, start the pressing cylinder (217) to push down the pressing roller (218) until the lower end surface of the pressing roller (218) fits the upper end surface of the roll of negative to flatten the roll of negative. Finally, drive the roll of negative between the first sponge cleaning sleeve (202) and the pressing roller (218) by the conveyor belt (201). When the pattern on the roll of negative moves below the strip through hole (216), the pattern on this roll of negative can be digitized through the scanning cavity (3).

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