CN116859690A

CN116859690A - Exposure device

Info

Publication number: CN116859690A
Application number: CN202310837770.0A
Authority: CN
Inventors: 宋拥军; 伍锡焱; 赵政; 吴文兴
Original assignee: Huqiu Image Suzhou Co ltd
Current assignee: Huqiu Image Suzhou Co ltd
Priority date: 2023-07-10
Filing date: 2023-07-10
Publication date: 2023-10-10

Abstract

The application discloses an exposure device, which belongs to the technical field of image forming, and comprises a conveying component, a bracket component and an optical scanning device, wherein the conveying component is arranged on the bracket component, the optical scanning device comprises a shell, a laser and an optical component, the shell is arranged on the bracket component, the shell is provided with a containing cavity and an opening part, the opening part is communicated with the containing cavity, the laser is arranged on the shell, the optical component comprises a light deflection piece and a reflecting mirror, the reflecting mirror is provided with a reflecting surface, the reflecting surface faces towards the opening part, the conveying component comprises a plurality of pairs of conveying rollers, a conveying channel for conveying a photothermographic element is formed between the pairs of conveying rollers, a region to be scanned is arranged in the conveying channel, and the region to be scanned is opposite to the opening part. In the application, the scanning beam is not easy to deviate in the propagation process, the scanning precision of the optical scanning device is improved, the installation of each component is compact, the occupied space is less, the whole structure is simpler, and the production cost is lower.

Description

Exposure device

Technical Field

The application relates to the technical field of image forming, in particular to an exposure device.

Background

In the technical field of image forming, in particular in the technical field of laser printers, a photothermographic element with a photosensitive layer needs to be scanned by an exposure device, so that a latent image is formed on the photothermographic element, and then a complete and clear image is obtained by a heat treatment device. Specifically, the surface of the photosensitive drum is scanned with a light beam generated by an optical scanning device in an exposure device to form a latent image, and furthermore, a heat treatment device which selectively transfers toner onto the latent image on the photosensitive drum to form a toner image on the photosensitive drum is disposed downstream of the light beam irradiation position, and finally, the toner image on the photosensitive drum is transferred onto a photo-thermal element by a transfer device to obtain a complete and clear image.

In the above structure, the charging device needs to be arranged on the periphery of the photosensitive drum to charge the peripheral surface of the photosensitive drum almost uniformly, and the whole structure is complex, the production cost is high, and the scanning light beam is not directly irradiated to the photothermographic element for scanning, so that deflection is easy to occur in the propagation process of the scanning light beam, the scanning precision of the optical scanning device is reduced, therefore, in the prior art, the optical scanning device is also arranged to directly irradiate to the photothermographic element for scanning so as to improve the scanning precision, but the distribution of each component is more dispersed, the whole structure of the exposure device occupies larger space, the use effect of the whole exposure device is influenced, and the imaging of the final photothermographic element is unfavorable.

Disclosure of Invention

In order to overcome the defects in the prior art, the application aims to provide the exposure device which has a compact structure, occupies a small space and can improve the service efficiency of the device.

The application adopts the following technical scheme:

the utility model provides an exposure device, includes conveying subassembly, support subassembly, still includes optical scanning device, conveying subassembly sets up on the support subassembly, optical scanning device includes casing, laser, optical subassembly, the casing is installed on the support subassembly, the casing is equipped with and holds chamber, opening, the opening with hold the chamber intercommunication, the laser is installed on the casing, optical subassembly is installed hold the intracavity, optical subassembly includes light deflection piece, speculum, the speculum is equipped with the reflecting surface, the reflecting surface orientation opening, conveying subassembly includes a plurality of pairs of conveying rollers, the length direction of opening with the axial direction of conveying roller is parallel, a plurality of pairs of be used for conveying photothermograph's transportation passageway is formed between the conveying roller, be equipped with in the transportation passageway and wait to scan the region with the opening position is just right, the light beam that the laser sent shines simultaneously on the light deflection piece and takes place to deflect, the light beam after the deflection warp wait to throw on the reflection and scan the photothermograph and scan the regional in order to scan.

Further, the cross-sectional shape of the exposure device is L-shaped.

Further, the cross section of the bracket component is -shaped.

Further, the optical deflector comprises a polygon mirror and a wedge mirror, the polygon mirror is rotatably mounted in the accommodating cavity, the polygon mirror is provided with a plurality of reflecting surfaces, the wedge mirror is fixedly mounted in the accommodating cavity, and a plurality of light beams emitted by the laser are deflected through the wedge mirror and then simultaneously irradiate on one reflecting surface of the polygon mirror.

Further, the support assembly comprises side plates and a bottom plate, wherein the side plates are located on two sides of the shell, the bottom plate is fixedly connected with the side plates and located below the shell, and the conveying assembly is located between the shell and the bottom plate.

Further, the support assembly further comprises a light absorbing member, a light path channel is formed between the two side plates, the light absorbing member is installed on the side plates and located on two sides of the light path channel, and the light absorbing member can absorb light beams which are not projected onto the area to be scanned.

Further, the conveying assembly further comprises a first guide assembly, the first guide assembly comprises a plurality of pairs of installation rollers and guide plates, the installation rollers are installed on the support assembly and are parallel to the conveying rollers, the guide plates are arranged on the installation rollers at intervals along the axial direction of the installation rollers, a first guide channel is formed between the two guide plates which are vertically opposite, and the first guide channel is located on one side of the conveying channel and is communicated with the conveying channel.

Further, the conveying roller is provided with groove parts, the groove parts are arranged on the periphery of the conveying roller and distributed at intervals along the axial direction of the conveying roller, and the guide parts face the conveying roller and extend into the groove parts.

Further, the conveying assembly further comprises a second guiding assembly, the second guiding assembly comprises a plurality of pairs of guiding rollers, the guiding rollers are arranged between two adjacent pairs of conveying rollers, the axial direction of each guiding roller is parallel to that of each conveying roller, a second guiding channel is formed between two guiding rollers which are vertically opposite, and the second guiding channel is communicated with the conveying channels and is parallel to the extending direction of the two guiding rollers.

Further, the exposure device further comprises a speed reducing assembly, the speed reducing assembly comprises a first mounting plate, a second mounting plate, a motor, a speed reducing wheel assembly, a driven wheel, a first conveying piece and a second conveying piece, the first mounting plate is rotatably mounted on the support assembly, the second mounting plate is rotatably mounted on the first mounting plate, the motor is mounted on the second mounting plate, the motor comprises an output shaft, the output shaft penetrates through the second mounting plate and extends out, the speed reducing wheel assembly is mounted on the first mounting plate, the driven wheel is mounted at the end part of a piece to be driven, the first conveying piece is wound on the output shaft and the speed reducing wheel assembly, and the second conveying piece is wound on the speed reducing wheel assembly and the driven wheel.

Compared with the prior art, the exposure device has the following beneficial effects:

(1) The exposure device comprises a conveying component, a support component and an optical scanning device, wherein the conveying component is arranged on the support component, the optical scanning device comprises a shell, a laser and the optical component, the shell is arranged on the support component and is provided with a containing cavity and an opening, the opening is communicated with the containing cavity, the laser is arranged on the shell, the optical component is arranged in the containing cavity, the optical component comprises a light deflection piece and a reflecting mirror, the reflecting mirror is provided with a reflecting surface, the reflecting surface faces the opening, the conveying component comprises a plurality of pairs of conveying rollers, the length direction of the opening is parallel to the axial direction of the conveying rollers, a conveying channel for conveying a photothermographic element is formed between the pairs of conveying rollers, a region to be scanned is arranged in the conveying channel, the region to be scanned is opposite to the position of the opening, and a plurality of light beams emitted by the laser are simultaneously irradiated on the light deflection piece and deflected through the reflecting mirror to the region to be scanned by the photothermographic element. In the application, the scanning beam directly irradiates the photothermographic element to scan, the scanning beam is not easy to deviate in the propagation process, the scanning precision of the optical scanning device is improved, the use effect of the whole exposure device is enhanced, the imaging of the final photothermographic element is facilitated, and each component in the exposure device is compact in installation, occupies less space, has simpler overall structure and lower production cost.

(2) According to the application, the light absorption piece is arranged on the bracket component, so that the light beam which is not projected onto the area to be scanned is absorbed by the light absorption piece, and the light is prevented from being reflected onto the photothermographic element after being diffusely reflected on the side plate or the conveying component, so that the scanning precision of the optical scanning device is ensured, the effect of forming a latent image on the photothermographic element is better, and the imaging of the final photothermographic element is facilitated.

(3) According to the application, the first guide component and the second guide component are arranged to stably and accurately convey the photothermographic element into the conveying channel, so that the photothermographic element is prevented from swinging in the conveying process to influence the imaging of the photothermographic element, and the subsequent scanning with the optical scanning device is facilitated.

(4) According to the application, by arranging the speed reducing assembly, on one hand, the tension is convenient and quick to adjust, and on the other hand, the service life of the motor is prolonged while certain transmission efficiency is ensured, and the service efficiency of the exposure device is improved as a whole.

Drawings

FIG. 1 is an assembly view of an exposure apparatus of the present application;

FIG. 2 is a schematic diagram of the exposure apparatus of FIG. 1;

FIG. 3 is a partial cross-sectional view of the exposure apparatus of FIG. 1;

FIG. 4 is a perspective view of an optical scanning device of the exposure apparatus of FIG. 1;

FIG. 5 is a schematic diagram of the optical scanning device of FIG. 4;

FIG. 6 is a schematic view of the optical path of the optical scanning device of FIG. 4 in operation;

FIG. 7 is a schematic view of a structure of a holder assembly of the exposure apparatus of FIG. 1;

FIG. 8 is a schematic diagram of a transfer assembly of the exposure apparatus of FIG. 1;

FIG. 9 is another schematic diagram of the transfer assembly of FIG. 8;

FIG. 10 is a bottom view of the transfer assembly of FIG. 9;

FIG. 11 is a cross-sectional view taken along the A-A direction of the transfer assembly of FIG. 10;

FIG. 12 is a schematic view of a deceleration assembly of the exposure apparatus of FIG. 1;

fig. 13 is a partial schematic view of the deceleration assembly of fig. 12.

In the figure: 10. an optical scanning device; 11. a housing; 111. a receiving chamber; 112. an opening portion; 113. a base; 114. an upper cover; 12. a laser; 13. an optical component; 131. a collimator lens; 132. a light-emitting sampling reflector; 133. a light-emitting energy focusing mirror; 134. a light deflection member; 1341. a polygon mirror; 13411. a reflective surface; 1342. a wedge mirror; 135. fθ lens; 136. a cylindrical mirror; 137. a zero sampling mirror; 138. a reflecting mirror; 1381. a reflecting surface; 14. a receiver; 15. a baffle;

20. a transfer assembly; 21. a conveying roller; 211. a drive roll; 212. driven roller; 213. a groove portion; 22. a first guide assembly; 221. a mounting roller; 222. a guide plate; 2221. a guide part; 2222. a guide surface; 23. a second guide assembly; 24. a transmission assembly; 241. a driving wheel; 242. a belt; 243. a tensioning wheel; 244. a driven wheel;

30. a bracket assembly; 31. a side plate; 311. a first fixing plate; 312. a second fixing plate; 313. a mounting hole; 314. a first fixing hole; 32. a bottom plate; 33. a light absorbing member; 34. a mounting frame;

40. a deceleration assembly; 41. a first mounting plate; 411. a first top plate; 4111. a first slot; 4112. a first hinge point; 412. a second top plate; 4121. a second fixing hole; 42. a second mounting plate; 421. a second slot; 422. a second hinge point; 43. a motor; 431. an output shaft; 44. a reduction gear assembly; 441. a reduction gear; 442. a reduction gear rotating shaft; 45. driven wheel; 46. a first transfer member; 47. and a second transfer member.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or be present as another intermediate element through which the element is fixed. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Fig. 1-3 show an exposure apparatus according to the present application, which includes an optical scanning device 10, a transport assembly 20, a support assembly 30, and a deceleration assembly 40.

In this embodiment:

as shown in fig. 4-6, the optical scanning device 10 includes a housing 11, a laser 12, an optical assembly 13, a receiver 14, and a baffle 15.

The housing 11 is mounted on the holder assembly 30, and the housing 11 is provided with a housing chamber 111 and an opening 112, and the opening 112 communicates with the housing chamber 111. In this embodiment, the housing 11 includes a base 113 and an upper cover 114, the base 113 and the upper cover 114 are fixedly connected, the opening 112 is disposed on the base 113, and the conveying assembly 20 is disposed below the opening 112, so that the exposure apparatus is closely matched with a heat treatment apparatus with an L-shaped cross section. In this embodiment, the housing 11 is made of a resin material, and is structurally stable and resistant to high temperatures. In other embodiments, the housing 11 may be made of plastic or metal material, selected according to the user's use requirements and production costs.

The laser 12 is mounted on the housing 11 for emitting a plurality of light beams in successive time periods, wherein the wavelength and intensity of the light beams can be selected according to the use requirements. In this embodiment, the laser 12 is also disposed in the accommodating cavity 111, so that the whole optical scanning device 10 has a compact structure and occupies less external space. In a preferred embodiment, the laser 12 can be rotated parallel to the emitting surface of the beam, so that the position of the light emitting point can be adjusted.

The optical assembly 13 is installed in the accommodating chamber 111, and the optical assembly 13 includes a collimator lens 131, an outgoing light sampling mirror 132, an outgoing light energy focusing mirror 133, a light deflector 134, an fθ lens 135, a cylindrical mirror 136, a zero position sampling mirror 137, and a reflecting mirror 138.

The collimator 131 can focus the light beam emitted by the laser 12, so as to prevent the laser point finally projected onto the photothermographic element from being too large, thereby causing imaging blurring of the photothermographic element and affecting the scanning precision of the device.

The light-emitting sampling mirror 132 can transmit most of the light, and reflect a small part of the light for feedback, so that the size and intensity of the emitted light beam can be adjusted by the laser 12.

The light-emitting energy focusing mirror 133 is matched with the light-emitting sampling reflecting mirror 132, so that long-distance light can be focused on one point, a high-brightness light spot is formed, the light can be more concentrated and intensified, and the light reflected by the light-emitting sampling reflecting mirror 132 is sensed and timely fed back for adjustment.

The light deflecting member 134 includes a polygon mirror 1341, a wedge-shaped mirror 1342, the polygon mirror 1341 being rotatably mounted within the accommodation chamber 111, the polygon mirror 1341 including a plurality of reflecting surfaces 13411 on the sides of a regular polygon rotator and being rotatable about the central axis of the regular polygon, i.e., about an axis perpendicular to a plane containing the regular polygon at positions equidistant from the respective vertices. The reflecting surface 13411 of the light beam is arranged parallel to the rotation axis along each side of the regular polygon, and the light beam emitted from the above-described laser 12 is irradiated onto a reflecting surface 13411 so as to be incident on the fθ lens 135, the reflecting mirror 138 as scanning light. In addition, when the polygon mirror 1341 rotates, the incident angle of the light beam to be irradiated onto each reflecting surface 13411 is continuously changed, thereby deflecting the reflected light.

The wedge-shaped mirror 1342 is fixedly installed in the accommodating cavity 111 for beam control deflection, and the inclination angles of the two sides of the wedge-shaped mirror 1342 are smaller, so that the light path deflects to the thicker side, and a certain angle deflection can be performed on the incident light path. The multiple beams from the laser 12 are deflected by the wedge 1342 and then simultaneously impinge on a reflective surface 13411 of the polygon 1341.

The fθ lens 135 is used to adjust the scanning speeds of the light beams to be equal to each other. Since the light beams are deflected by the polygon mirror 1341, the distance from the reflecting surface 13411 of the polygon mirror 1341 to the region to be scanned changes, and the scanning speed of each light beam can be adjusted by the fθ lens 135.

The cylindrical mirror 136 can form a light spot in the horizontal direction, and can adjust the size of the light spot to meet different imaging requirements.

The zero sampling mirror 137 is used for judging whether other optical components 13 are installed in place or not to determine the initial position of the optical scanning device 10 when the optical scanning device 10 starts to work, so as to ensure the scanning precision of the optical scanning device 10.

The mirror 138 is provided with a reflecting surface 1381, the reflecting surface 1381 faces the opening 112, and the deflected light beam is projected onto the region to be scanned via the mirror 138 and the opening 112 to be scanned.

The receiver 14 is mounted on the housing 11, and is used for cooperating with the zero sampling mirror 137 to confirm zero position, so as to ensure the scanning accuracy of the optical scanning device 10, the laser 12 is used for emitting common light beams, when the receiver 14 senses the light signals reflected by the zero sampling mirror 137, the optical component 13 is indicated to be mounted and adjusted in place, and then the laser 12 is used for emitting a plurality of light beams required for scanning the photothermographic element.

Baffle 15 sets up in holding chamber 111 and is located fθ lens 135, between the speculum 138, because the photo and thermal element's that waits to scan size difference, the length of opening 112 is generally greater than the length of waiting to scan the regional length, is used for shielding the partial reflecting surface 1381 at speculum 138 both ends, guarantees the scanning scope of this optical scanning device 10, avoids causing the sky to penetrate, probably leads to light diffuse reflection to photo and thermal element like this, influences the scanning accuracy of optical scanning device 10, still can cause laser beam's wasting of resources, improves manufacturing cost. In this embodiment, the baffle 15 is made of sponge.

As shown in fig. 8-11, the transfer assembly 20 includes a plurality of pairs of conveyor rollers 21, a first guide assembly 22, and a second guide assembly 23.

The conveying rollers 21 include a driving roller 211 and a driven roller 212, and a conveying path for conveying the photothermographic element is formed between each pair of conveying rollers 21, and a region to be scanned is provided in the conveying path, and is located opposite to the opening 112. In the present embodiment, the longitudinal direction of the opening 112 is parallel to the axial direction of the conveying roller 21. The number of the conveying rollers 21 is two pairs.

The first guide assembly 22 includes several pairs of mounting rollers 221 and guide plates 222. The installation roller 221 is installed on the support assembly 30 and is parallel to the conveying roller 21, the guide plates 222 are arranged on the installation roller 221 at intervals along the axis direction of the installation roller 221, the guide plates 222 are provided with guide surfaces 2222, the guide surfaces 2222 are arc-shaped, a first guide channel is formed between two guide plates 222 which are vertically opposite, the first guide channel is positioned on one side of the conveying channel and is communicated with the conveying channel, and the photothermal element is stably and accurately conveyed into the conveying channel through the arrangement, so that the photothermal element is matched with the optical scanning device 10 for scanning. In the present embodiment, the number of the installation rollers 221 is two pairs, and the plurality of guide plates 222 adjacent to each other are installed on the adjacent two installation rollers 221; the number of the guide plates 222 is 8, and they are symmetrically arranged on the installation roller 221.

In a preferred embodiment, the conveying roller 21 is provided with groove portions 213, the groove portions 213 are disposed at the periphery of the conveying roller 21 and are distributed at intervals along the axial direction of the conveying roller 21, the guide plate 222 is provided with guide portions 2221, the guide portions 2221 face the direction of the conveying roller 21 and extend into the groove portions 213, and the two portions cooperate to enable the guiding effect to be better and occupy less space. In other embodiments, the guide wheels and other structures can be independently arranged for guiding, but the structure is relatively complex, the occupied space is more, and the production cost is relatively high. In the present embodiment, the groove portions 213 are provided on the outermost driven roller 212, and the number of groove portions 213 is 2 to 4.

The second guide assembly 23 comprises a plurality of pairs of guide rollers, the guide rollers are arranged between two adjacent pairs of conveying rollers 21, the axial direction of each guide roller is parallel to the axial direction of each conveying roller 21, a second guide channel is formed between two guide rollers which are vertically opposite, the second guide channels are communicated with the conveying channels, the extending directions of the second guide channels and the conveying channels are parallel, and the photo-thermal sensitive elements are prevented from swinging in the conveying process to influence the scanning precision. In this embodiment, the movement direction of the photothermographic element in the conveying channel and the movement direction of the photothermographic element in the second guiding channel are on the same horizontal line, and a region to be scanned is formed between two adjacent pairs of guiding rollers.

The transmission assembly 24 comprises a driving wheel 241, a belt 242, a tension wheel 243 and a driven wheel 244.

The driving wheel 241 is arranged at the end part of one driving roller 211, the driven wheel 244 is arranged at the end part of the other driving roller 211, the tension wheel 243 is arranged on the bracket assembly 30, the belt 242 is wound on the driving wheel 241, the driven wheel 244 and the tension wheel 243, the tension wheel 243 is used for adjusting the tightness of the belt 242, the vibration of the belt 242 during operation is reduced, the belt 242 is prevented from slipping to a certain extent, the conveying roller 21 is prevented from generating axial play in the conveying process, the conveying roller 21 is not synchronous in rotation, the photo-thermal sensitive element is offset in the conveying process, and the normal and stable operation of a transmission system can be ensured through the arrangement of the structure.

In a preferred embodiment, the transmission assembly 24 further includes a plurality of tension springs, which are wound around the shafts of the driving roller 211 and the driven roller 212, which are opposite to each other up and down, so that the tension springs can provide an up and down clamping force to the photothermographic element while the conveying roller 21 rotates to convey the photothermographic element, thereby making the photothermographic element more stable and reliable in the conveying process.

As shown in fig. 7, the bracket assembly 30 includes a side plate 31, a bottom plate 32, and a light absorbing member 33.

An optical path channel is formed between the two opposite side plates 31, the area to be scanned is located in the optical path channel, the side plates 31 are provided with mounting holes 313 for mounting the conveying rollers 21 and first fixing holes 314 for being matched with the speed reducing assemblies 40, and the extending direction of the side plates 31 is perpendicular to the axial direction of the conveying rollers 21. In the present embodiment, the cross-sectional shape of the side plate 31 is L-shaped.

In a preferred embodiment, the side plate 31 includes a first fixing plate 311 and a second fixing plate 312, the first fixing plate 311 and the second fixing plate 312 are fixedly connected and are sequentially arranged along a direction perpendicular to the axial direction of the conveying roller 21, a clamping area for installing the driving roller 211 is formed between the first fixing plate 311 and the second fixing plate 312, and the first fixing plate 311 is provided with an installation hole 313 for installing the driven roller 212.

The bottom plate 32 is arranged at one end of the side plate 31 and is fixedly connected with the side plate 31 vertically, and a certain supporting effect is achieved on the side plate 31, so that the bracket assembly 30 is stable in structure and easy to install the optical scanning device 10. In the present embodiment, the length of the bottom plate 32 is greater than or equal to the distance between the two opposite side plates 31, and the width of the bottom plate 32 is smaller than or equal to the width of the side plates 31. The bracket assembly 30 has a -shaped cross-section.

The light absorbing member 33 is mounted on the side plate 31 and located at two sides of the light path channel, and the light absorbing member 33 can absorb the light beam which is not projected onto the area to be scanned, so as to prevent the light beam from being reflected onto the photothermographic element after being diffusely reflected on the bracket assembly 30 and the transmission assembly 20, and influence the scanning accuracy of the optical scanning device 10. In this embodiment, the light absorbing member 33 is disposed on the second fixing plate 312. The light absorbing member 33 has a shape of a vertical elongated shape. The light absorbing member 33 is made of black sponge material, and has the advantages of simple structure, low production cost and good absorption effect.

The mounting bracket 34 is installed on the curb plate 31 and is located the light path passageway both sides, and the mounting bracket 34 is equipped with the joint groove, and the light absorption piece 33 joint is installed in the joint inslot, conveniently changes etc. light absorption piece 33, improves the availability factor of this bracket component 30. In this embodiment, the mounting bracket 34 is disposed on the second fixing plate 312.

As shown in fig. 12-13, the reduction assembly 40 includes a first mounting plate 41, a second mounting plate 42, a motor 43, a reduction gear assembly 44, a driven gear 45, a first transfer member 46, and a second transfer member 47.

The first mounting plate 41 comprises a first top plate 411 and a second top plate 412, the second top plate 412 extends from the surface of the first top plate 411, a gap is formed between the second top plate 412 and the first top plate 411, one end of the first top plate 411 is rotatably hinged on the bracket assembly 30, the first top plate 411 is provided with a first slot 4111, the first slot 4111 takes a hinge point of the first top plate 411 and the bracket assembly 30 as a center, and the first slot 4111 is matched with a first screw and slides relative to the first screw; the second top plate 412 is provided with a second fixing hole 4121, and the second fixing hole 4121 is used for being matched with a second screw to form a second locking structure. In this embodiment, the first mounting plate 41 is integrally formed, and the first hinge point 4112 of the first mounting plate 41 and the bracket assembly 30 is close to the output shaft 431 of the motor 43. The number of the first slots 4111 is two, and the rotation radii of the two first slots 4111 are equal. The first slot 4111 has a kidney-shaped or circular arc-shaped cross section. In other embodiments, a plurality of round holes may be disposed on the first mounting plate 41, and the round holes are arranged in an arc shape, and one of the round holes is opposite to the first fixing hole 314 by rotating the first mounting plate 41, and then the locking is completed by the first screw.

One end of the second mounting plate 42 is rotatably hinged on the first mounting plate 41, the second mounting plate 42 is provided with a second slot 421, the second slot 421 takes a second hinge point 422 of the second mounting plate 42 and the first mounting plate 41 as a center, and the second slot 421 is matched with a second screw and slides relative to the second screw. In this embodiment, the second slot 421 has a kidney-shaped or circular arc cross-section. The number of the second slots 421 is two, and the rotation radii of the two second slots 421 are equal. In other embodiments, a plurality of round holes may be disposed on the second mounting plate 42, the round holes are arranged in an arc shape, one of the round holes is opposite to the second fixing hole 4121 by rotating the second mounting plate 42, and locking is completed by the second screw.

The motor 43 is mounted on the second mounting plate 42, and the motor 43 includes an output shaft 431, the output shaft 431 extending through the second mounting plate 42 and out into the void. When the output shaft 431 rotates, the first conveying member 46 drives the reduction gear 441 to rotate, and simultaneously, the reduction gear 441 and the reduction gear rotating shaft 442 synchronously rotate to drive the second conveying member 47, so that the driven wheel 45 and the conveying roller 21 can be driven to rotate, thereby realizing the reduction function. Because too big gear ratio can increase motor 43's load, influences its life-span, so set up the reduction ratio through above two-stage transmission, when guaranteeing certain transmission efficiency, prolong motor 43's life, improve this actuating mechanism's availability factor on the whole.

The reduction gear assembly 44 includes a reduction gear 441 and a reduction gear rotation shaft 442, the reduction gear rotation shaft 442 is mounted on the first mounting plate 41, and the reduction gear 441 is mounted outside the reduction gear rotation shaft 442. In the present embodiment, the diameter of the reduction wheel 441 is larger than the diameter of the output shaft 431.

The driven pulley 45 is mounted at the end of the conveying roller 21. In this embodiment, the diameter of the reduction wheel rotation shaft 442 is smaller than the diameter of the driven wheel 45.

The first conveying member 46 is wound on the output shaft 431 and the speed reducing wheel 441, the center distance between the output shaft 431 and the speed reducing wheel 441 is increased or decreased by rotating the second mounting plate 42 until the proper center distance is adjusted, the tightness of the first conveying member 46 is suitable, and then the second screw passing through the second slot 421 is screwed to enable the second mounting plate 42 to press against the first mounting plate 41, at this time, the center distance between the output shaft 431 and the speed reducing wheel 441 is not changed any more, and the tightness adjustment of the first conveying member 46 is finished.

The second conveying member 47 is wound around the speed reducing wheel rotating shaft 442 and the driven wheel 45, and the center distance between the speed reducing wheel rotating shaft 442 and the driven wheel 45 is increased or decreased by rotating the first mounting plate 41 until the proper center distance is adjusted, so that the tightness of the second conveying member 47 is suitable, and then the first screw passing through the first slot 4111 is screwed to enable the first mounting plate 41 to press against the bracket assembly 30, at this time, the center distance between the speed reducing wheel rotating shaft 442 and the driven wheel 45 is not changed any more, and the tightness adjustment of the second conveying member 47 is finished.

In the application, the transmission component 20 is arranged below the shell 11, the opening 112 is opposite to the position of the area to be scanned, when the exposure device is used, the light beam emitted by the laser 12 is deflected by the light deflection piece 134 to form scanning light, then is projected onto the area to be scanned by the reflecting mirror 138 and the opening 112 to scan, the scanning light beam directly irradiates the photothermographic element to scan, the scanning light beam is not easy to deflect in the propagation process, the scanning precision of the optical scanning device 10 is improved, the using effect of the whole exposure device is enhanced, the imaging of the final photothermographic element is facilitated, and the exposure device has compact installation of each component, less occupied space, simpler overall structure and lower production cost; the light absorbing piece 33 is arranged to absorb the light beams which are not projected onto the area to be scanned, so that the light beams are prevented from being reflected to the photothermographic element after being diffusely reflected on the bracket component 30 and the conveying component 20, and the scanning precision of the optical scanning device 10 is prevented from being influenced; the application stably and accurately conveys the photothermographic element into a conveying channel by arranging the first guide component 22 so as to be matched with the optical scanning device 10 for scanning later; the application, through setting up the deceleration assembly 40, on one hand, it is more convenient, swift to adjust the tensioning force, on the other hand, while guaranteeing certain transmission efficiency, lengthen the life time of the electrical machinery 43, have improved the availability factor of the exposure device as a whole.

The foregoing examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that, for those skilled in the art, it is possible to make several modifications and improvements without departing from the concept of the present application, which are equivalent to the above embodiments according to the essential technology of the present application, and these are all included in the protection scope of the present application.

Claims

1. An exposure device, includes conveying subassembly, support subassembly, its characterized in that: the optical scanning device comprises a shell, a laser and an optical component, wherein the support component is arranged at one end of the shell and is perpendicular to the shell, the shell is provided with a containing cavity and an opening, the opening is communicated with the containing cavity, the laser is arranged on the shell, the optical component is arranged in the containing cavity, the optical component comprises a light deflection piece and a reflecting mirror, the reflecting mirror is provided with a reflecting surface, the reflecting surface faces the opening, the conveying component comprises a plurality of pairs of conveying rollers, the length direction of the opening is parallel to the axial direction of the conveying rollers, a conveying channel for conveying a photothermographic element is formed between the conveying rollers, a region to be scanned is arranged in the conveying channel, the region to be scanned is opposite to the position of the opening, a light beam emitted by the laser irradiates the light deflection piece and deflects, and the deflected light beam is projected onto the region to be scanned by the reflecting mirror so as to scan the photothermographic element.

2. The exposure apparatus according to claim 1, wherein: the cross-sectional shape of the exposure device is L-shaped.

3. The exposure apparatus according to claim 1, wherein: the cross section of the bracket component is -shaped.

4. The exposure apparatus according to claim 1, wherein: the optical deflector comprises a polygon mirror and a wedge-shaped mirror, wherein the polygon mirror is rotatably arranged in the accommodating cavity, the polygon mirror is provided with a plurality of reflecting surfaces, the wedge-shaped mirror is fixedly arranged in the accommodating cavity, and a light beam emitted by the laser is deflected through the wedge-shaped mirror and then irradiates on one reflecting surface of the polygon mirror.

5. The exposure apparatus according to claim 1, wherein: the support assembly comprises side plates and a bottom plate, wherein the side plates are positioned on two sides of the shell, the bottom plate is fixedly connected with the side plates and positioned below the shell, and the conveying assembly is positioned between the shell and the bottom plate.

6. The exposure apparatus according to claim 5, wherein: the support assembly further comprises light absorbing pieces, a light path channel is formed between the two side plates, the light absorbing pieces are arranged on the side plates and located on two sides of the light path channel, and the light absorbing pieces can absorb light beams which are not projected onto the area to be scanned.

7. The exposure apparatus according to claim 1, wherein: the conveying assembly further comprises a first guide assembly, the first guide assembly comprises a plurality of pairs of installation rollers and guide plates, the installation rollers are installed on the support assembly and are parallel to the conveying rollers, the guide plates are arranged on the installation rollers at intervals along the axis direction of the installation rollers, a first guide channel is formed between the two guide plates which are vertically opposite, and the first guide channel is located on one side of the conveying channel and is communicated with the conveying channel.

8. The exposure apparatus according to claim 7, wherein: the conveying roller is provided with groove parts, the groove parts are arranged on the periphery of the conveying roller and distributed at intervals along the axial direction of the conveying roller, and the guide parts face the conveying roller and extend into the groove parts.

9. The exposure apparatus according to claim 7, wherein: the conveying assembly further comprises a second guide assembly, the second guide assembly comprises a plurality of pairs of guide rollers, the guide rollers are arranged between two adjacent pairs of conveying rollers, the axial direction of each guide roller is parallel to that of each conveying roller, a second guide channel is formed between two guide rollers which are vertically opposite, and the second guide channel is communicated with the conveying channels and is parallel to the extending direction of the conveying channels.

10. The exposure apparatus according to claim 1, wherein: the exposure device further comprises a speed reduction assembly, the speed reduction assembly comprises a first mounting plate, a second mounting plate, a motor, a speed reduction wheel assembly, a driven wheel, a first conveying member and a second conveying member, the first mounting plate is rotatably mounted on the support assembly, the second mounting plate is rotatably mounted on the first mounting plate, the motor is mounted on the second mounting plate, the motor comprises an output shaft, the output shaft penetrates through the second mounting plate and extends out, the speed reduction wheel assembly is mounted on the first mounting plate, the driven wheel is mounted at the end part of a member to be driven, the first conveying member is wound on the output shaft and the speed reduction wheel assembly, and the second conveying member is wound on the speed reduction wheel assembly and the driven wheel.