Plate making method and plate making device

Abstract

The present invention relates to a plate-making method and a plate-making device. The plate-making method comprises the following steps: providing a first substrate and a second substrate, wherein the second substrate has a light-transmitting area and a light-shielding area, wherein the light-transmitting area corresponds to the image to be transferred; coating a first liquid photosensitive resin layer on the first substrate, and curing the layer by ultraviolet exposure to obtain a plate base; coating a second liquid photosensitive resin layer on the light-transmitting area of ​​the second substrate by a first dot matrix coating mechanism to obtain a pre-exposure layer corresponding to the image to be transferred, and leaving at least part of the light-shielding area blank; pressing the pre-exposure layer and the plate base so that the pre-exposure layer and the plate base are located between the first substrate and the second substrate; curing the pre-exposure layer by ultraviolet exposure to form an image layer to obtain a rough plate; and separating the first substrate and the second substrate from the rough plate, recovering the uncured liquid photosensitive resin, and obtaining a finished plate. In the plate-making process using the above-mentioned plate-making method, the plate-making process is simplified, the working hours are reduced, and the plate-making efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of resin plate making, and in particular to a plate making method and a plate making device. Background Art

[0002] In the related technology, the liquid resin platemaking process is developed based on the property of liquid photosensitive resin being cured by ultraviolet radiation. In the platemaking process, firstly, a film and a base are placed between two flat and transparent glass sheets. The base is generally transparent, and the film has a light-transmitting area and an opaque area and has the required graphic information. The film is attached to the lower glass, and the base is attached to the upper glass; liquid photosensitive resin is then filled between the film and the base; after the liquid photosensitive resin is leveled, it is exposed on the upper glass and the base side to produce a plate bottom, and the light-shielding property of the film is used to expose the lower glass and the film side to produce a relief, which corresponds to the graphic information of the film; after the exposure is completed, post-processing processes such as plate washing and debonding are carried out. During the entire exposure process, the film, resin, upper and lower glass, and the light source for exposure are all in a stationary state, so this exposure method is also called fixed exposure. When the exposure format exceeds the size of the glass, it is generally necessary to divide the entire format, expose it separately, and then splice it together by filling it with resin and curing it or gluing it with glue. This operation process is not only labor-intensive and time-consuming, but there will also be seams at the splicing of two adjacent plates, and the seams are easy to break.

[0003] In order to save resin materials and reduce costs, for layouts with large gaps between images and texts, it is generally necessary to manually typeset through computers, and arrange the images and texts with large gaps into layouts with smaller gaps through rotation, shifting, and reorganization, and then transfer the typeset images and texts to film at a ratio of 1:1, and then make a 1:1 printing plate through the film, and then the printing plate needs to be cut manually, and the layout reference line is drawn on the hanging board base at a ratio of 1:1 by hand or by a board marking machine, and then the cut printing plate is manually pasted with double-sided tape according to the printing layout at a ratio of 1:1. This plate making process is also cumbersome, labor-intensive, time-consuming, and inefficient. Summary of the invention

[0004] A first aspect of an embodiment of the present invention provides a plate making method to solve the problem that the resin plate making process is labor-intensive, time-consuming and inefficient.

[0005] A plate making method comprises the following steps:

[0006] Providing a first substrate and a second substrate, wherein the second substrate has a light-transmitting area and a light-shielding area, and the light-transmitting area corresponds to the image to be transferred;

[0007] A first liquid photosensitive resin layer is coated on the first substrate, and cured by ultraviolet exposure to obtain a plate base;

[0008] Coating a second liquid photosensitive resin layer on the light-transmitting area of ​​the second substrate by a first dot matrix coating mechanism to obtain a pre-exposure layer corresponding to the image to be transferred, and leaving at least part of the light-shielding area blank;

[0009] Laminating the pre-exposure layer and the base plate so that the pre-exposure layer and the base plate are located between the first substrate and the second substrate;

[0010] Curing the pre-exposed layer by ultraviolet light exposure to form an image layer to obtain a rough plate; and

[0011] The first substrate and the second substrate are separated from the rough plate, and the uncured liquid photosensitive resin is recovered to obtain a finished plate.

[0012] In the plate-making process using the above-mentioned plate-making method, a first liquid photosensitive resin layer is coated on a first substrate, and after being cured by ultraviolet exposure to obtain a plate bottom, a second liquid photosensitive resin layer is coated on a light-transmitting area of ​​a second substrate by a first dot matrix coating mechanism to obtain a pre-exposure layer corresponding to the image to be transferred, and the light-shielding area is at least partially left blank, that is, the first dot matrix coating mechanism realizes partial coating of liquid photosensitive resin on the plate bottom, so that there is liquid photosensitive resin at the position with the image, and there is less liquid photosensitive resin or even no liquid photosensitive resin at the position without the image, and after the pre-exposure layer and the plate bottom are pressed and exposed, the pre-exposure layer corresponding to the image to be transferred is cured into an image layer, and the uncured liquid photosensitive resin can be recycled. In this process, the liquid photosensitive resin used for coating is reduced, which not only reduces the material cost, but also reduces the amount of contaminated uncured liquid photosensitive resin to be recycled later, thereby saving the later processing cost. Since the transfer of images and texts is achieved through the first dot matrix coating mechanism during the coating process, combined with computer image processing and coating control of the first dot matrix coating mechanism, typesetting can be flexibly performed and the exposure format can be controlled, avoiding the need to split the entire image format and then splice it after exposure and curing, thereby simplifying the platemaking process, reducing working hours and improving platemaking efficiency.

[0013] In one embodiment, the step of coating the first substrate with a first liquid photosensitive resin layer includes:

[0014] The first liquid photosensitive resin layer is coated on the first substrate by a second dot matrix coating mechanism. The first liquid photosensitive resin layer includes an image area corresponding to the image to be transferred and a connection area connected to the image area. The image area and the connection area enclose a blank area.

[0015] In one embodiment, the first substrate is transparent and has a first side surface and a second side surface opposite to each other. The step of coating the first liquid photosensitive resin layer on the first substrate by a second dot matrix coating mechanism includes:

[0016] The first rolled substrate is gradually unfolded and moved toward the first light source group so that the first side faces upward, the second dot matrix coating mechanism is used to coat the first liquid photosensitive resin layer on the first side, and the first light source group is used to perform ultraviolet exposure and curing on the first liquid photosensitive resin layer from the side where the first side is located and the side where the second side is located.

[0017] In one embodiment, the second substrate has a third side and a fourth side facing each other, and the step of coating the second liquid photosensitive resin layer on the light-transmitting area of ​​the second substrate by a first dot matrix coating mechanism comprises:

[0018] The second rolled substrate is gradually unrolled and moved toward the second light source group so that the third side faces upward, the first dot matrix coating mechanism is used to coat the second liquid photosensitive resin layer on the third side, and the second light source group is used to perform ultraviolet exposure and curing on the second liquid photosensitive resin layer from the side where the fourth side is located;

[0019] Before the step of laminating the pre-exposed layer and the base, the method comprises:

[0020] The first substrate on which the bottom plate is formed is turned over so that the first side faces downward, so that the pre-exposure layer and the bottom plate are located between the first substrate and the second substrate.

[0021] A second aspect of an embodiment of the present invention provides a plate-making device to solve the problem that the resin plate-making process is labor-intensive, time-consuming and inefficient.

[0022] A plate-making device comprises a frame and a first feeding mechanism, a second feeding mechanism, a first dot matrix coating mechanism, a second dot matrix coating mechanism, a first light source group, a second light source group and a pressing mechanism connected to the frame, wherein the first feeding mechanism is used to sequentially transfer a first substrate to the second light source group via the second dot matrix coating mechanism, the first light source group and the pressing mechanism, the second dot matrix coating mechanism is used to coat a first liquid photosensitive resin layer on the first substrate, the first light source group is used to perform ultraviolet exposure and curing on the first liquid photosensitive resin layer to obtain a plate bottom; the second feeding mechanism is used to The second substrate is transferred to the second light source group in sequence through the first dot matrix coating mechanism and the laminating mechanism, the second substrate has a light-transmitting area and a light-shielding area, the light-transmitting area corresponds to the image to be transferred, the first dot matrix coating mechanism is used to coat the second liquid photosensitive resin layer in the light-transmitting area to obtain a pre-exposure layer, the light-shielding area is at least partially left empty, the laminating mechanism is used to press the pre-exposure layer and the plate bottom so that the pre-exposure layer and the plate bottom are located between the first substrate and the second substrate, and the second light source group is used to perform ultraviolet exposure and curing on the pre-exposure layer to obtain a rough plate.

[0023] A third aspect of the embodiments of the present invention provides a plate making method to solve the problem that the resin plate making process is labor-intensive, time-consuming and inefficient.

[0024] A plate making method comprises the following steps:

[0025] Providing a first substrate and a second substrate, wherein the first substrate is transparent, and the second substrate has a light-transmitting area and a light-shielding area, and the light-transmitting area corresponds to the image to be transferred;

[0026] A liquid photosensitive resin layer is coated on the first substrate by a dot matrix coating mechanism, and a pre-exposure layer corresponding to the image to be transferred is formed on a side of the liquid photosensitive resin layer away from the first substrate;

[0027] Laminating the second substrate to the side of the liquid photosensitive resin layer facing away from the first substrate, so that the light-transmitting area corresponds to the pre-exposure layer;

[0028] Expose the first substrate to ultraviolet light on a side away from the liquid photosensitive resin layer to cure a portion of the liquid photosensitive resin layer and obtain a base plate, and expose the second substrate to ultraviolet light on a side away from the liquid photosensitive resin layer to cure the pre-exposed layer and form an image layer to obtain a rough plate; and

[0029] The first substrate and the second substrate are separated from the rough plate, and the uncured liquid photosensitive resin is recovered to obtain a finished plate.

[0030] In the plate-making process using the above-mentioned plate-making method, when the liquid photosensitive resin layer is coated on the first substrate by the dot matrix coating mechanism, the dot matrix coating mechanism can partially coat the liquid photosensitive resin, so that the side of the liquid photosensitive resin layer away from the first substrate forms a pre-exposure layer corresponding to the image to be transferred, and after the second substrate is pressed to the side of the liquid photosensitive resin layer away from the first substrate, the light-transmitting area corresponds to the pre-exposure layer; ultraviolet light exposure is performed on the side of the first substrate away from the liquid photosensitive resin layer, which can cure part of the liquid photosensitive resin layer and obtain a plate bottom, and ultraviolet light exposure is performed on the side of the second substrate away from the liquid photosensitive resin layer, which can cure the pre-exposure layer and form an image layer, thereby obtaining a rough plate. Since the dot matrix coating mechanism can realize partial coating of the liquid photosensitive resin, so that there is liquid photosensitive resin at the position with the image, and there is less liquid photosensitive resin or even no liquid photosensitive resin at the position without the image, the liquid photosensitive resin used for coating is reduced, which not only reduces the material cost, but also reduces the amount of contaminated uncured liquid photosensitive resin to be recovered later, thereby saving the later processing cost. Since the transfer of images and texts is achieved through the dot matrix coating mechanism during the coating process, combined with computer image processing and coating control of the dot matrix coating mechanism, typesetting can be flexibly carried out and the exposure format can be controlled, avoiding the need to divide the entire image format and then splice it after exposure and curing, thereby simplifying the platemaking process, reducing working hours and improving platemaking efficiency.

[0031] In one embodiment, the step of coating the liquid photosensitive resin layer on the first substrate by a dot matrix coating mechanism includes:

[0032] A first liquid photosensitive resin layer and a second liquid photosensitive resin layer are layered on the first substrate, wherein the first liquid photosensitive resin layer is located between the first substrate and the second liquid photosensitive resin layer; the first liquid photosensitive resin layer is used for being cured by ultraviolet light exposure to form the plate base, and the second liquid photosensitive resin layer is used for being cured by ultraviolet light exposure to form the graphic layer.

[0033] In one embodiment, in the step of layering the first liquid photosensitive resin layer and the second liquid photosensitive resin layer on the first substrate, the first liquid photosensitive resin layer includes an image area corresponding to the image to be transferred, and a connecting area connected to the image area, and the image area and the connecting area enclose a blank area.

[0034] In one embodiment, the step of coating the liquid photosensitive resin layer on the first substrate by a dot matrix coating mechanism includes:

[0035] The first rolled substrate is gradually unwound and moves toward the first light source group, the dot matrix coating mechanism is used to coat the liquid photosensitive resin layer on the first substrate, and the first light source group is used to perform ultraviolet exposure and curing on the liquid photosensitive resin layer from the side of the first substrate facing away from the liquid photosensitive resin layer;

[0036] The step of pressing the second substrate onto the side of the liquid photosensitive resin layer away from the first substrate comprises:

[0037] The second rolled substrate is gradually unfolded and moved toward the second light source group to be pressed onto the side of the liquid photosensitive resin layer facing away from the first substrate. The first light source group is located between the dot matrix coating mechanism and the second light source group. The second light source group is used to perform ultraviolet exposure and curing on the liquid photosensitive resin layer from the side of the second substrate facing away from the liquid photosensitive resin layer.

[0038] A fourth aspect of the embodiments of the present invention provides a plate making method to solve the problem that the resin plate making process is labor-intensive, time-consuming and inefficient.

[0039] A plate-making device, characterized in that it comprises a frame and a first feeding mechanism, a second feeding mechanism, a dot matrix coating mechanism, a laminating mechanism, a first light source group and a second light source group connected to the frame, the first feeding mechanism is used to transfer a first substrate to the second light source group via the dot matrix coating mechanism, the laminating mechanism and the first light source group in sequence, the dot matrix coating mechanism is used to coat a liquid photosensitive resin layer on the first substrate, the liquid photosensitive resin layer comprises a pre-exposure layer corresponding to a pattern to be transferred, the pre-exposure layer is at least partially left empty, the second feeding mechanism is used to feed the second substrate to the The laminating mechanism is used for transferring the second substrate, the second substrate having a light-transmitting area and a light-shielding area, the light-transmitting area corresponding to the image to be transferred, the laminating mechanism is used for laminating the pre-exposure layer and the second substrate so that the liquid photosensitive resin layer is located between the first substrate and the second substrate, and the light-transmitting area corresponds to the pre-exposure layer; the first light source group is used for performing ultraviolet exposure and curing on the side of the first substrate facing away from the liquid photosensitive resin layer to obtain a plate bottom, and the second light source group is used for performing ultraviolet exposure and curing on the pre-exposure layer to obtain a rough plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 is a flow chart of a plate making method according to an embodiment;

[0042] Figure 2 is a schematic diagram of a plate-making device according to an embodiment;

[0043] Figure 3 is a flow chart of a plate making method according to another embodiment;

[0044] Figure 4 A schematic diagram of a plate-making device according to another embodiment. DETAILED DESCRIPTION

[0045] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Preferred embodiments of the present invention are provided in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0046] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0048] refer to Figure 1 The first aspect of the present invention discloses a plate-making method, which belongs to a liquid resin plate-making process and is used to manufacture a printing plate with graphic information. The graphic information is generally embodied as graphic relief in the liquid resin plate-making process.

[0049] Combination Figure 1 and Figure 2 The plate making method comprises the following steps:

[0050] S100, providing a first substrate 11 and a second substrate 12, wherein the second substrate 12 has a light-transmitting area and a light-shielding area, and the light-transmitting area corresponds to the image or text to be transferred.

[0051] Specifically, in one embodiment, the first substrate 11 is transparent and has a first side 11a and a second side 11b opposite to each other. The first side 11a can be a surface to be coated, that is, in the subsequent coating process, the liquid photosensitive resin is coated on the first side 11a. In this embodiment, the first substrate 11 has good ultraviolet transmission, for example, its transmittance to ultraviolet light is above 80%. In other embodiments, the first substrate 11 can have a low transmittance to ultraviolet light, for example, its transmittance is less than 10%. The material of the first substrate 11 can be plastic or PI (Polyimide). The first substrate 11 can be rolled up and stored, and gradually unfolded during the coating process. For example, the first substrate 11 can be wound around a roller, and the first substrate 11 can be gradually separated from the roller and unfolded by driving the roller to rotate.

[0052] The second substrate 12 is a film, which has a light-transmitting area and a light-shielding area, and the light-transmitting area corresponds to the image to be transferred. The light-transmitting area has a relatively high light transmittance for ultraviolet rays, for example, its light transmittance can be more than 80%, and the light-shielding area can block the ultraviolet rays from passing through, so that the liquid photosensitive resin can be partially exposed and cured through the light-transmitting area to achieve the transfer of the image. The second substrate 12 can have a third side 12a and a fourth side 12b opposite to each other, and the third side 12a is used to apply the liquid photosensitive resin. The second substrate 12 can also be rolled up and stored, and gradually unfolded during the coating process. For example, the second substrate 12 can also be wound around a roller, and the second substrate 12 is gradually separated from the roller and unfolded by driving the roller to rotate.

[0053] S200, coating the first liquid photosensitive resin layer 21 on the first substrate 11, and curing it through ultraviolet exposure to obtain a plate base.

[0054] Specifically, in one embodiment, the rolled first substrate 11 can be gradually unfolded so that the first side surface 11a of the first substrate 11 faces upward, and a 0-4 mm thick first liquid photosensitive resin layer 21 is coated on the first side surface 11a of the first substrate 11 by the coating mechanism 30. The thickness of the first liquid photosensitive resin layer 21 can be controlled by the glue output of the coating mechanism 30 in combination with the first scraper 41. That is, the thickness can be preliminarily controlled by the glue output of the coating mechanism 30, and the thickness of the liquid photosensitive resin layer can be adjusted in combination with the movement of the first scraper 41, thereby more accurately controlling the thickness of the first liquid photosensitive resin layer 21.

[0055] In another embodiment, the first liquid photosensitive resin layer 21 can be coated on the first side 11a of the first substrate 11 by a dot matrix coating mechanism, and the dot matrix coating mechanism has a plurality of glue heads arranged regularly, and each glue head can be independently controlled to be opened or closed. For example, a plurality of glue heads can be arranged along a straight line, and all the glue heads can be driven by a driving mechanism to synchronously move horizontally or rise and fall. For another example, a plurality of glue heads can be arranged in an array, and all the glue heads can be driven by a driving mechanism to synchronously move horizontally or rise and fall. The valves in all the glue heads can be independently controlled to achieve independent glue discharge of each glue head, and the valve is opened to coat the liquid photosensitive resin at the position where the image needs to be set, and the valve is closed or the glue discharge amount is reduced at the position without the image, thereby realizing the function of local coating, that is, realizing the dot matrix coating function.

[0056] During the dot matrix coating process, the first liquid photosensitive resin layer 21 may include a graphic area corresponding to the graphic to be transferred, and a connection area connecting the graphic area, and the graphic area and the connection area enclose a blank area. In other words, the graphic area has the required thickness, and the connection area is used to connect the graphic area into one, and there is no liquid photosensitive resin in the blank area, so that the amount of liquid photosensitive resin used in the plate bottom can be reduced, and the production cost can be reduced. After the rough plate is obtained in the later stage, the amount of uncured liquid photosensitive resin recovered from the plate bottom is also small, thereby reducing the amount of contaminated uncured liquid photosensitive resin.

[0057] Of course, the first liquid photosensitive resin layer 21 can also be coated on the entire image area to be transferred, that is, there is no distinction between the image area and the connection area. In this embodiment, the first liquid photosensitive resin layer 21 does not have a blank area.

[0058] In the embodiment of the present invention, the rough plate can be understood as an intermediate product obtained after the plate base has been formed and the image and text have been transferred and solidified. The rough plate still has uncured liquid photosensitive resin remaining, and after recovery and cleaning, a finished plate for printing can be obtained.

[0059] Before dot matrix coating, the image to be transferred can be processed by a computer, for example, the image can be gridded, and the grid is used to correspond to the glue head of the dot matrix coating mechanism 30. During the coating process, the grids in the image area and the connection area open the valve of the glue head, and the blank area closes the valve of the glue head.

[0060] After the first substrate 11 is coated with the first liquid photosensitive resin layer 21, the first substrate 11 can be moved toward the first light source group 51, and the first liquid photosensitive resin layer 21 can be cured by ultraviolet exposure of the first light source group 51 to obtain a plate base. In particular, in the process of coating the first liquid photosensitive resin layer 21 by dot matrix coating, the first liquid photosensitive resin layer 21 can be exposed on the entire surface, that is, the ultraviolet light source is fully utilized for exposure and curing to obtain a plate base, and there is no need to expose the first liquid photosensitive resin layer 21 in different areas, thereby improving the exposure and curing efficiency.

[0061] In the embodiment where the first substrate 11 is transparent and has a high transmittance to ultraviolet rays, the first light source group 51 can perform ultraviolet exposure and curing on the first liquid photosensitive resin layer 21 from the side where the first side surface 11a is located and the side where the second side surface 11b is located, thereby reducing the exposure time and improving the exposure efficiency. Of course, the first light source group 51 can also perform single-side exposure on the first liquid photosensitive resin layer 21, for example, from the side where the first side surface 11a is located or from the side where the second side surface 11b is located.

[0062] In an embodiment where the first substrate 11 has a low transmittance to ultraviolet rays, the first light source group 51 performs ultraviolet exposure and curing on the first liquid photosensitive resin layer 21 from the side where the first side surface 11 a is located, and a plate base can also be obtained.

[0063] S300, coating the second liquid photosensitive resin layer 22 on the light-transmitting area of ​​the second substrate 12 by the first dot matrix coating mechanism 31 to obtain a pre-exposure layer corresponding to the image to be transferred, and leaving at least part of the light-shielding area blank.

[0064] In order to distinguish the dot matrix coating mechanism for the first liquid photosensitive resin layer 21 and the dot matrix coating mechanism for coating the second liquid photosensitive resin layer 22, the present invention regards the dot matrix coating mechanism for coating the second liquid photosensitive resin layer 22 as the first dot matrix coating mechanism 31, and the dot matrix coating mechanism for the first liquid photosensitive resin layer 21 as the second dot matrix coating mechanism 32. The structures and working principles of the first dot matrix coating mechanism 31 and the second dot matrix coating mechanism 32 are the same, and can be referred to the previous description, which will not be repeated here.

[0065] It is understandable that the first dot matrix coating mechanism 31 and the second dot matrix coating mechanism 32 can be two sets of dot matrix coating mechanisms 30, and the two sets of mechanisms can operate independently. For automated equipment, a transverse movement mechanism can also be added so that the first dot matrix coating mechanism 31 can be reused as the second dot matrix coating mechanism 32, that is, only one set of dot matrix coating mechanism 30 is required.

[0066] During the coating process of the second liquid photosensitive resin layer 22, the wound second substrate 12 can be gradually unfolded with the third side 12a facing upward, and the first dot matrix coating mechanism 31 coats the second liquid photosensitive resin layer 22 on the third side 12a to obtain a pre-exposure layer corresponding to the image to be transferred, and the light-shielding area is at least partially left empty. In other words, the pre-exposure layer has a desired thickness, such as 0-4mm, and its thickness can be controlled by the glue output of the first coating mechanism 30 in combination with the second scraper 42. The light-shielding area may not be coated with liquid photosensitive resin, thereby reducing the amount of liquid photosensitive resin used in the pre-exposure layer and reducing production costs. In the later stage, after the pre-exposure layer is cured by ultraviolet exposure to obtain a rough plate, the amount of uncured liquid photosensitive resin recovered is also small, thereby reducing the amount of contaminated uncured liquid photosensitive resin.

[0067] S400, pressing the pre-exposure layer and the base plate so that the pre-exposure layer and the base plate are located between the first substrate 11 and the second substrate 12.

[0068] After the base is cured and formed, the first substrate 11 with the base can be turned over by a guide mechanism such as a guide wheel or a guide belt, so that the first side 11a of the first substrate 11 faces downward, and the pre-exposure layer and the base are located between the first substrate 11 and the second substrate 12. The laminating mechanism can laminate the base and the pre-exposure layer to achieve full connection and fusion of the pre-exposure layer and the base, and control the lamination thickness, for example, to control the entire thickness within the range of 2mm-7mm, so as to facilitate the subsequent ultraviolet exposure and curing of the pre-exposure layer.

[0069] S500, ultraviolet light exposure and curing of the pre-exposed layer to form an image layer, thereby obtaining a rough plate.

[0070] The second substrate 12 coated with the pre-exposure layer can be driven to move toward the second light source group 52, and the second light source group 52 can perform ultraviolet exposure and curing on the pre-exposure layer from the side where the fourth side surface 12b is located, to obtain an image layer corresponding to the image to be transferred, that is, to realize the transfer of image information from the second substrate 12 to the image layer of the rough plate. In this process, the plate base and the image layer are cross-linked with the plate base to form a reliable connection.

[0071] S600, separating the first substrate 11 and the second substrate 12 from the rough plate, recovering the uncured liquid photosensitive resin, and obtaining a finished plate.

[0072] After obtaining the rough plate, the uncured liquid photosensitive resin can be recovered by roller extrusion and negative pressure adsorption. These uncured liquid photosensitive resins are generally contaminated, but can be processed or continued to be used under low requirements to improve the utilization rate of the material.

[0073] After being separated from the rough plate, the first substrate 11 and the second substrate 12 can be respectively wound up again to facilitate subsequent use.

[0074] It is understandable that there is no order between step S200 and step S300, that is, step S200 can be performed before step S300, or after step S300, or both can be performed simultaneously.

[0075] In the plate-making process using the above-mentioned plate-making method, a first liquid photosensitive resin layer 21 is coated on a first substrate 11, and after being cured by ultraviolet exposure to obtain a plate bottom, a second liquid photosensitive resin layer 22 is coated on a light-transmitting area of ​​a second substrate 12 by a first dot matrix coating mechanism 31 to obtain a pre-exposure layer corresponding to the image to be transferred, and the light-shielding area is at least partially left blank, that is, the first dot matrix coating mechanism 31 realizes partial coating of liquid photosensitive resin on the plate bottom, so that there is liquid photosensitive resin at the position with the image, and there is less liquid photosensitive resin or even no liquid photosensitive resin at the position without the image, and after the pre-exposure layer and the plate bottom are pressed together and the pre-exposure layer is exposed, the pre-exposure layer corresponding to the image to be transferred is cured into an image layer, and the uncured liquid photosensitive resin can be recycled. In this process, the liquid photosensitive resin used for coating is reduced, which not only reduces the material cost, but also reduces the amount of contaminated uncured liquid photosensitive resin to be recycled later, thereby saving the later processing cost. Since the transfer of images and texts is achieved through the first dot matrix coating mechanism 31 during the coating process, combined with computer image processing and coating control of the first dot matrix coating mechanism 31, typesetting can be flexibly performed and the exposure format can be controlled, avoiding the need to divide the entire image format and then manually splice it after exposure and curing, thereby simplifying the platemaking process, reducing working hours and improving platemaking efficiency.

[0076] Continue to refer Figure 2 Corresponding to the above-mentioned plate-making method, the second aspect of the present invention discloses a plate-making device 10, which includes a frame (not shown) and a first feeding mechanism (not shown) connected to the frame, a second feeding mechanism (not shown), a first dot matrix coating mechanism 31, a second dot matrix coating mechanism 32, a first light source group 51, a second light source group 52 and a pressing mechanism (not shown). The first feeding mechanism is used to transfer the first substrate 11 to the second light source group 52 through the second dot matrix coating mechanism 32, the first light source group 51, and the pressing mechanism in sequence. The second dot matrix coating mechanism 32 is used to coat the first liquid photosensitive resin layer 21 on the first substrate 11. In one embodiment, the first liquid photosensitive resin layer 21 may include an image and text area corresponding to the image and text to be transferred, and a connection area connecting the image and text area, and the image and text area and the connection area are enclosed to form a blank area. This coating method can save the material of the first liquid photosensitive resin layer 21. The specific operation can refer to the description of the coating method of the first liquid photosensitive resin layer 21 in the previous text, which will not be repeated here. In other embodiments, the first liquid photosensitive resin layer 21 may also be coated on the entire image area to be transferred, that is, there is no distinction between the image area and the connection area, and the first liquid photosensitive resin layer 21 may not have a blank area.

[0077] It is understandable that the first feeding mechanism and the second feeding mechanism may be a combination of a motor and a roller, or a combination of a motor and a conveyor belt, or other feeding methods. The pressing mechanism may use a power mechanism such as a hydraulic cylinder to drive the plate to move, and use the plate to perform the pressing operation. The mechanism that can be used to achieve feeding and pressing can have a variety of structural forms, and the present invention does not limit this.

[0078] The first light source group 51 is used to perform ultraviolet exposure and curing on the first liquid photosensitive resin layer 21 to obtain a plate base. The second feeding mechanism is used to transfer the second substrate 12 to the second light source group 52 through the first dot matrix coating mechanism 31 and the pressing mechanism in sequence. The second substrate 12 has a light-transmitting area and a light-shielding area. The light-transmitting area corresponds to the image to be transferred. The first dot matrix coating mechanism 31 is used to coat the second liquid photosensitive resin layer 22 in the light-transmitting area to obtain a pre-exposure layer. The pressing mechanism is used to press the pre-exposure layer and the plate base so that the pre-exposure layer and the plate base are located between the first substrate 11 and the second substrate 12. The second light source group 52 is used to perform ultraviolet exposure and curing on the pre-exposure layer to obtain a rough plate.

[0079] After obtaining the rough plate, the uncured liquid photosensitive resin can be recovered by roller extrusion and negative pressure adsorption. These uncured liquid photosensitive resins are generally contaminated, but can be processed or continued to be used under low requirements to improve the utilization rate of the material.

[0080] It can be understood that the platemaking device 10 of this embodiment is used to implement the platemaking method disclosed in the first aspect of the present invention. The structure, function and principle of coordinated work of each mechanism and component can refer to the description of the platemaking method in the first aspect of the present invention and will not be repeated here.

[0081] refer to Figure 3 The third aspect of the present invention discloses another plate making method, combining Figure 4 The plate making method comprises the following steps:

[0082] S1000, providing a first substrate 110 and a second substrate 120, wherein the first substrate 110 is transparent, and the second substrate 120 has a light-transmitting area and a light-shielding area, and the light-transmitting area corresponds to the image to be transferred;

[0083] In one embodiment, the first substrate 110 is transparent and has a surface to be coated, that is, in the subsequent coating process, the liquid photosensitive resin is coated on the surface to be coated. The first substrate 110 has a good transmittance to ultraviolet rays, for example, its transmittance to ultraviolet rays is above 80%. The material of the first substrate 110 can be plastic or PI (Polyimide). The first substrate 110 can be rolled up and stored, and gradually unfolded during the coating process.

[0084] The second substrate 120 is a film, which has a light-transmitting area and a light-shielding area, and the light-transmitting area corresponds to the image to be transferred. The light-transmitting area has a relatively high light transmittance for ultraviolet rays, for example, its light transmittance can be more than 80%, and the light-shielding area can block the ultraviolet rays from passing through, so that the liquid photosensitive resin can be partially exposed and cured through the light-transmitting area to achieve the transfer of the image. The second substrate 120 can also be rolled up and gradually unfolded during the coating process.

[0085] S 2000 , a liquid photosensitive resin layer is coated on the first substrate 110 by the dot matrix coating mechanism 300 , and a pre-exposure layer corresponding to the image to be transferred is formed on the side of the liquid photosensitive resin layer away from the first substrate 110 , and the pre-exposure layer forms a blank area.

[0086] The dot matrix coating mechanism 300 has a plurality of glue discharge heads arranged in a regular pattern, and each glue discharge head can be independently controlled to be opened or closed. For example, a plurality of glue discharge heads can be arranged along a straight line, and all the glue discharge heads can be driven by a driving mechanism to synchronously move laterally or rise and fall. For another example, a plurality of glue discharge heads can be arranged in an array, and all the glue discharge heads can be driven by a driving mechanism to synchronously move laterally or rise and fall. The valves in all the glue discharge heads can be independently controlled, so as to realize the independent glue discharge of each glue discharge head. The valve is opened at the position where the image needs to be set to apply the liquid photosensitive resin, and the valve is closed or the glue discharge amount is reduced at the position without the image, so as to realize the function of local coating, that is, the dot matrix coating function.

[0087] Before dot matrix coating, the image to be transferred can be processed by a computer, for example, the image can be gridded, and the grid is used to correspond to the glue head of the dot matrix coating mechanism 300. During the coating process, the grid in the image area opens the valve of the glue head, and the empty area closes the valve of the glue head.

[0088] In one embodiment, in the step of coating the liquid photosensitive resin layer on the to-be-coated surface of the first substrate 110 by the dot matrix coating mechanism 300, layered coating can be performed, for example, the first liquid photosensitive resin layer and the second liquid photosensitive resin layer can be coated on the first substrate 110 in sequence, and the first liquid photosensitive resin layer is located between the first substrate 110 and the second liquid photosensitive resin layer. The first liquid photosensitive resin layer is used to form a plate bottom after exposure and curing in the later stage, and the second liquid photosensitive resin layer corresponds to the image to be transferred, which can be regarded as a pre-exposure layer. In this embodiment, the first liquid photosensitive resin layer 21 may include an image area corresponding to the image to be transferred, and a connecting area connecting the image area, and the image area and the connecting area are enclosed to form a blank area. In other words, the image area has the required thickness, and the connecting area is used to connect the image area into one, and there is no liquid photosensitive resin in the blank area, so that the amount of liquid photosensitive resin used in the plate bottom can be reduced, and the production cost can be reduced. After the rough plate is obtained in the later stage, the amount of uncured liquid photosensitive resin recovered from the plate bottom is also small, thereby reducing the amount of contaminated uncured liquid photosensitive resin. Of course, the first liquid photosensitive resin layer 21 can also be coated in the entire image area to be transferred, that is, there is no distinction between the image area and the connection area, and the first liquid photosensitive resin layer 21 may not have a blank area. Of course, in this embodiment, the layered coating can also have more layers.

[0089] In another embodiment, layered coating may not be performed, and a 2mm-7mm thick liquid photosensitive resin layer may be directly coated on the to-be-coated surface of the first substrate 110 by the dot matrix coating mechanism 300, and a pre-exposure layer corresponding to the image to be transferred is formed on the side of the liquid photosensitive resin layer away from the first substrate 110, and the thickness of the pre-exposure layer may be controlled by the glue output of the dot matrix coating mechanism 300 in combination with the scraper 400. It is understandable that in this embodiment, the blank area of ​​the pre-exposure layer can save the amount of liquid photosensitive resin, and the entire liquid photosensitive resin layer includes the necessary connection area, so that the entire liquid photosensitive resin can form a whole after exposure and curing.

[0090] S3000, pressing the second substrate 120 onto the side of the liquid photosensitive resin layer away from the first substrate 110, so that the light-transmitting area corresponds to the pre-exposure layer.

[0091] In this embodiment, the portion of the liquid photosensitive resin layer used to form the plate bottom and the portion of the liquid photosensitive resin layer used to form the image layer are located on the same side of the first substrate 110. Therefore, the first substrate 110 does not need to be turned over. The second substrate 120 can be pressed to the side of the liquid photosensitive resin layer away from the first substrate 110 with the liquid photosensitive resin layer facing upward through a pressing mechanism to control the pressing thickness, for example, the entire thickness is controlled within the range of 2mm-7mm, and the light-transmitting area corresponds to the pre-exposure layer.

[0092] S 4000, ultraviolet exposure is performed on the side of the first substrate 110 away from the liquid photosensitive resin layer to cure part of the liquid photosensitive resin layer and obtain a plate base, and ultraviolet exposure is performed on the side of the second substrate 120 away from the liquid photosensitive resin layer to cure the pre-exposed layer and form an image layer to obtain a rough plate.

[0093] In this step, a first light source group 510 disposed on a side of the first substrate 110 facing away from the liquid photosensitive resin layer can be used to expose and cure part of the liquid photosensitive resin layer to obtain a base plate, and a second light source group 520 disposed on a side of the second substrate 120 facing away from the liquid photosensitive resin layer can be used to expose and cure the pre-exposed layer to form an image layer, thereby achieving cross-linking of the image layer and the base plate, thereby obtaining a rough plate.

[0094] For example, the side of the first substrate 110 that is away from the liquid photosensitive resin layer is sucked onto the surface of the first light source group 510 by vacuuming, and then the liquid photosensitive resin layer is exposed and cured by the first light source group 510. For another example, the side of the second substrate 120 that is away from the liquid photosensitive resin layer is sucked onto the surface of the second light source group 520 by vacuuming, and then the liquid photosensitive resin layer is exposed and cured by the second light source group 520.

[0095] Specifically, refer to Figure 4 In this embodiment, the rolled first substrate 110 is gradually unrolled and moved toward the first light source group 510, the dot matrix coating mechanism 300 coats the liquid photosensitive resin layer on the first substrate 110, and the first light source group 510 is used to perform ultraviolet exposure and curing on the liquid photosensitive resin layer from the side of the first substrate 110 that faces away from the liquid photosensitive resin layer. The rolled second substrate 120 is gradually unrolled and moved toward the second light source group 520 to be pressed onto the side of the liquid photosensitive resin layer that faces away from the first substrate 110, the first light source group 510 is located between the dot matrix coating mechanism 300 and the second light source group 520, and the second light source group 520 is used to perform ultraviolet exposure and curing on the liquid photosensitive resin layer from the side of the second substrate 120 that faces away from the liquid photosensitive resin layer.

[0096] S 5000 , separating the first substrate 110 and the second substrate 120 from the rough plate, recovering the uncured liquid photosensitive resin, and obtaining a finished plate.

[0097] After obtaining the rough plate, the uncured liquid photosensitive resin can be recovered by roller extrusion and negative pressure adsorption. These uncured liquid photosensitive resins are generally contaminated, but can be processed or continued to be used under low requirements to improve the utilization rate of the material.

[0098] After being separated from the rough plate, the first substrate 110 and the second substrate 120 can be respectively rolled up again for convenience of subsequent use.

[0099] In the platemaking process using the above-mentioned platemaking method, when the liquid photosensitive resin layer is coated on the first substrate 110 by the dot matrix coating mechanism 300, the characteristic of the dot matrix coating mechanism 300 that the liquid photosensitive resin can be locally coated is utilized so that a pre-exposure layer corresponding to the image to be transferred is formed on the side of the liquid photosensitive resin layer away from the first substrate 110, and after the second substrate 120 is pressed onto the side of the liquid photosensitive resin layer away from the first substrate 110, the light-transmitting area corresponds to the pre-exposure layer; ultraviolet light exposure is performed on the side of the first substrate 110 away from the liquid photosensitive resin layer to cure part of the liquid photosensitive resin layer and obtain a plate base, and ultraviolet light exposure is performed on the side of the second substrate 120 away from the liquid photosensitive resin layer to cure the pre-exposure layer and form an image layer, thereby obtaining a rough plate. Since the dot matrix coating mechanism 300 can realize partial coating of liquid photosensitive resin, so that there is liquid photosensitive resin at the position with images and text, and there is less liquid photosensitive resin or even no liquid photosensitive resin at the position without images and text, the liquid photosensitive resin used for coating is reduced, which not only reduces the material cost, but also reduces the amount of contaminated uncured liquid photosensitive resin to be recycled later, thereby saving the later processing cost. Since the image and text are transferred by the dot matrix coating mechanism 300 during the coating process, combined with computer image and text processing and coating control of the dot matrix coating mechanism 300, typesetting and exposure format can be flexibly controlled, avoiding the entire image and text format from being divided, exposed and cured and then spliced, thereby simplifying the plate making process, reducing working hours and improving plate making efficiency.

[0100] refer to Figure 4 Corresponding to the plate-making method disclosed in the third aspect of the present invention, the fourth aspect of the present invention discloses a plate-making device 100, which includes a frame (not shown) and a first feeding mechanism (not shown) connected to the frame, a second feeding mechanism (not shown), a dot matrix coating mechanism 300, a pressing mechanism (not shown), a first light source group 510 and a second light source group 520. The first feeding mechanism is used to transfer the first substrate 110 to the second light source group 520 through the dot matrix coating mechanism 300, the pressing mechanism, and the first light source group 510 in sequence. The dot matrix coating mechanism 300 is used to coat a liquid photosensitive resin layer on the first substrate 110. The liquid photosensitive resin layer includes a pre-exposure layer corresponding to the image to be transferred, and the pre-exposure layer is at least partially left blank.

[0101] In one embodiment, the liquid photosensitive resin layer between the pre-exposure layer and the first substrate 110 may include an image area corresponding to the image to be transferred, and a connection area connected to the image area, and the image area and the connection area enclose a blank area. This coating method can save the material of the liquid photosensitive resin layer. For specific operations, refer to the description of the coating method of the first liquid photosensitive resin layer 21 in the first aspect of the present invention, which will not be repeated here.

[0102] In other embodiments, the liquid photosensitive resin layer located between the pre-exposure layer and the first substrate 110 can also be coated on the entire image area to be transferred, that is, there is no distinction between the image area and the connection area, and the liquid photosensitive resin layer located between the pre-exposure layer and the first substrate 110 may not have a blank area.

[0103] The second feeding mechanism is used to transfer the second substrate 120 to the laminating mechanism. The second substrate 120 has a light-transmitting area and a light-shielding area. The light-transmitting area corresponds to the image to be transferred. The laminating mechanism is used to press the pre-exposure layer and the second substrate 120 so that the liquid photosensitive resin layer is located between the first substrate 110 and the second substrate 120, and the light-transmitting area corresponds to the pre-exposure layer. The first light source group 510 is used to perform ultraviolet exposure and curing on the liquid photosensitive resin layer on the side of the first substrate 110 facing away from the liquid photosensitive resin layer to obtain a plate base, and the second light source group 520 is used to perform ultraviolet exposure and curing on the pre-exposure layer to obtain a rough plate.

[0104] After obtaining the rough plate, the uncured liquid photosensitive resin can be recovered by roller extrusion and negative pressure adsorption. These uncured liquid photosensitive resins are generally contaminated, but can be processed or continued to be used under low requirements to improve the utilization rate of the material.

[0105] It can be understood that the platemaking device 100 of this embodiment is used to implement the platemaking method disclosed in the third aspect of the present invention. The structure, function and principle of coordinated work of each mechanism and component can refer to the description of the platemaking method in the third aspect of the present invention and will not be repeated here.

[0106] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0107] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A plate making method, characterized in that: The following steps are involved: Providing a first substrate and a second substrate, wherein the second substrate has a light-transmitting area and a light-shielding area, and the light-transmitting area corresponds to the image to be transferred; A first liquid photosensitive resin layer is coated on the first substrate, and cured by ultraviolet exposure to obtain a plate base; Coating a second liquid photosensitive resin layer on the light-transmitting area of ​​the second substrate by a first dot matrix coating mechanism to obtain a pre-exposure layer corresponding to the image to be transferred, and leaving at least part of the light-shielding area blank; The first dot matrix coating mechanism includes a plurality of glue discharge heads arranged regularly, each of which is independently controlled to be opened or closed. A valve is opened at a position where a pattern needs to be set to coat the second liquid photosensitive resin, and a valve is closed or the glue discharge amount is reduced at a position where no pattern is set, thereby realizing the function of local coating; Before dot matrix coating, the image to be transferred is processed into a grid by computer. The grid is used to correspond to the glue head. During the coating process, the grid in the image area opens the valve of the glue head, and the empty area closes the valve of the glue head. Laminating the pre-exposure layer and the base plate so that the pre-exposure layer and the base plate are located between the first substrate and the second substrate; Curing the pre-exposed layer by ultraviolet light exposure to form an image layer to obtain a rough plate; as well as The first substrate and the second substrate are separated from the rough plate, and the uncured liquid photosensitive resin is recovered to obtain a finished plate; the step of coating the first substrate with a first liquid photosensitive resin layer comprises: The first liquid photosensitive resin layer is coated on the first substrate by a second dot matrix coating mechanism, wherein the first liquid photosensitive resin layer comprises an image area corresponding to the image to be transferred, and a connection area connected to the image area, wherein the image area and the connection area enclose a blank area; The first substrate is transparent and has a first side surface and a second side surface opposite to each other. The step of coating the first liquid photosensitive resin layer on the first substrate by a second dot matrix coating mechanism includes: The first rolled substrate is gradually unrolled and moved toward the first light source group so that the first side faces upward, the second dot matrix coating mechanism is used to coat the first liquid photosensitive resin layer on the first side, and the first light source group is used to perform ultraviolet exposure and curing on the first liquid photosensitive resin layer from the side where the first side is located and the side where the second side is located; The second substrate has a third side surface and a fourth side surface opposite to each other. The step of coating the second liquid photosensitive resin layer on the light-transmitting area of ​​the second substrate by a first dot matrix coating mechanism comprises: The second rolled substrate is gradually unwound and moved toward the second light source group so that the third side faces upward, the first dot matrix coating mechanism is used to coat the second liquid photosensitive resin layer on the third side, and the second light source group is used to perform ultraviolet exposure and curing on the second liquid photosensitive resin layer from the side where the fourth side is located; Before the step of laminating the pre-exposed layer and the base, the method comprises: The first substrate on which the bottom plate is formed is turned over so that the first side faces downward, so that the pre-exposure layer and the bottom plate are located between the first substrate and the second substrate.

2. A plate-making device, characterized in that: Used for applying the platemaking method described in claim 1, the platemaking device includes a frame and a first feeding mechanism, a second feeding mechanism, a first dot matrix coating mechanism, a second dot matrix coating mechanism, a first light source group, a second light source group and a pressing mechanism connected to the frame, the first feeding mechanism is used to transfer the first substrate to the second light source group in sequence through the second dot matrix coating mechanism, the first light source group and the pressing mechanism, the second dot matrix coating mechanism is used to coat the first substrate with a first liquid photosensitive resin layer, the first light source group is used to perform ultraviolet exposure and curing on the first liquid photosensitive resin layer to obtain a plate bottom; the second feeding mechanism is used to transfer the second substrate to the first dot matrix coating mechanism in sequence, The first dot matrix coating mechanism and the laminating mechanism are used to transfer the second substrate to the second light source group, the second substrate has a light-transmitting area and a light-shielding area, the light-transmitting area corresponds to the image to be transferred, the first dot matrix coating mechanism is used to coat the second liquid photosensitive resin layer on the light-transmitting area to obtain a pre-exposure layer, the light-shielding area is at least partially left empty, the laminating mechanism is used to press the pre-exposure layer and the plate bottom so that the pre-exposure layer and the plate bottom are located between the first substrate and the second substrate, and the second light source group is used to perform ultraviolet exposure and curing on the pre-exposure layer to obtain a rough plate; the first dot matrix coating mechanism and the second dot matrix coating mechanism have a plurality of glue heads arranged regularly, and each of the glue heads is independently controlled; Turning over the first substrate on which the bottom plate is formed so that the first side faces downward, so that the pre-exposed layer and the bottom plate are located between the first substrate and the second substrate; The first rolled substrate is gradually unrolled and moved toward the first light source group so that the first side faces upward, the second dot matrix coating mechanism is used to coat the first liquid photosensitive resin layer on the first side, and the first light source group is used to perform ultraviolet exposure and curing on the first liquid photosensitive resin layer from the side where the first side is located and the side where the second side is located; The second rolled substrate is gradually unwound and moved toward the second light source group so that the third side faces upward, the first dot matrix coating mechanism is used to coat the second liquid photosensitive resin layer on the third side, and the second light source group is used to perform ultraviolet exposure and curing on the second liquid photosensitive resin layer from the side where the fourth side is located; The first dot matrix coating mechanism includes a plurality of glue discharge heads arranged regularly, each of which is independently controlled to be opened or closed, and a valve is opened at a position where a pattern needs to be set to coat the second liquid photosensitive resin, and the valve is closed or the glue discharge amount is reduced at a position without a pattern, thereby realizing the function of local coating; Before dot matrix coating, the image to be transferred is gridded by computer. The grid is used to correspond to the glue head. During the coating process, the grid in the image area opens the valve of the glue head, and the blank area closes the valve of the glue head.

3. A plate making method, characterized in that: The following steps are involved: Providing a first substrate and a second substrate, wherein the first substrate is transparent, and the second substrate has a light-transmitting area and a light-shielding area, and the light-transmitting area corresponds to the image to be transferred; A liquid photosensitive resin layer is coated on the first substrate by a dot matrix coating mechanism, a pre-exposure layer corresponding to the image to be transferred is formed on a side of the liquid photosensitive resin layer away from the first substrate, and the pre-exposure layer forms a blank area; The first dot matrix coating mechanism includes a plurality of glue discharge heads arranged regularly, each of which is independently controlled to be opened or closed. A valve is opened at a position where a pattern needs to be set to coat the second liquid photosensitive resin, and a valve is closed or the glue discharge amount is reduced at a position where no pattern is set, thereby realizing the function of local coating; Before dot matrix coating, the image to be transferred is processed into a grid by computer. The grid is used to correspond to the glue head. During the coating process, the grid in the image area opens the valve of the glue head, and the empty area closes the valve of the glue head. Laminating the second substrate to the side of the liquid photosensitive resin layer facing away from the first substrate, so that the light-transmitting area corresponds to the pre-exposure layer; Expose the first substrate to ultraviolet light on the side away from the liquid photosensitive resin layer to cure part of the liquid photosensitive resin layer and obtain a plate base, and expose the second substrate to ultraviolet light on the side away from the liquid photosensitive resin layer to cure the pre-exposed layer and form an image layer to obtain a rough plate; as well as Separating the first substrate and the second substrate from the rough plate, recovering uncured liquid photosensitive resin, and obtaining a finished plate; Turning over the first substrate on which the bottom plate is formed so that the first side faces downward, so that the pre-exposed layer and the bottom plate are located between the first substrate and the second substrate; The first rolled substrate is gradually unrolled and moved toward the first light source group so that the first side faces upward, the second dot matrix coating mechanism is used to coat the first liquid photosensitive resin layer on the first side, and the first light source group is used to perform ultraviolet exposure and curing on the first liquid photosensitive resin layer from the side where the first side is located and the side where the second side is located; The rolled second substrate is gradually unfolded and moved toward the second light source group so that the third side faces upward, the first dot matrix coating mechanism is used to coat the second liquid photosensitive resin layer on the third side, and the second light source group is used to perform ultraviolet exposure and curing on the second liquid photosensitive resin layer from the side where the fourth side is located.

4. The plate making method according to claim 3, characterized in that: The step of coating the liquid photosensitive resin layer on the first substrate by a dot matrix coating mechanism comprises: A first liquid photosensitive resin layer and a second liquid photosensitive resin layer are layered on the first substrate, wherein the first liquid photosensitive resin layer is located between the first substrate and the second liquid photosensitive resin layer; the first liquid photosensitive resin layer is used for being cured by ultraviolet light exposure to form the plate base, and the second liquid photosensitive resin layer is used for being cured by ultraviolet light exposure to form the graphic layer.

5. The plate making method according to claim 4, characterized in that: In the step of layering the first liquid photosensitive resin layer and the second liquid photosensitive resin layer on the first substrate, the first liquid photosensitive resin layer includes an image area corresponding to the image to be transferred, and a connecting area connected to the image area, and the image area and the connecting area enclose a blank area.

6. The plate making method according to claim 3, characterized in that: The step of coating the liquid photosensitive resin layer on the first substrate by a dot matrix coating mechanism comprises: The first rolled substrate is gradually unwound and moves toward the first light source group, the dot matrix coating mechanism coats the liquid photosensitive resin layer on the first substrate, and the first light source group is used to perform ultraviolet exposure and curing on the liquid photosensitive resin layer from the side of the first substrate facing away from the liquid photosensitive resin layer; The step of pressing the second substrate onto the side of the liquid photosensitive resin layer away from the first substrate comprises: The second rolled substrate is gradually unfolded and moved toward the second light source group to be pressed onto the side of the liquid photosensitive resin layer facing away from the first substrate. The first light source group is located between the dot matrix coating mechanism and the second light source group. The second light source group is used to perform ultraviolet exposure and curing on the liquid photosensitive resin layer from the side of the second substrate facing away from the liquid photosensitive resin layer.

7. A plate-making device, characterized in that: The platemaking method used for applying any one of claims 3 to 6 comprises a frame and a first feeding mechanism, a second feeding mechanism, a dot matrix coating mechanism, a laminating mechanism, a first light source group and a second light source group connected to the frame, the first feeding mechanism being used to sequentially transfer a first substrate through the dot matrix coating mechanism, the laminating mechanism and the first light source group to the second light source group, the dot matrix coating mechanism being used to coat a liquid photosensitive resin layer on the first substrate, the liquid photosensitive resin layer comprising a pre-exposure layer corresponding to the image to be transferred, the pre-exposure layer being at least partially left empty, the second feeding mechanism being used to transfer the first substrate to the second light source group. Two substrates are transferred to the laminating mechanism, the second substrate has a light-transmitting area and a light-shielding area, the light-transmitting area corresponds to the image to be transferred, the laminating mechanism is used to press the pre-exposure layer and the second substrate, so that the liquid photosensitive resin layer is located between the first substrate and the second substrate, and the light-transmitting area corresponds to the pre-exposure layer; the first light source group is used to perform ultraviolet exposure and curing on the liquid photosensitive resin layer on the side of the first substrate facing away from the liquid photosensitive resin layer to obtain a plate base, and the second light source group is used to perform ultraviolet exposure and curing on the pre-exposure layer to obtain a rough plate; Turning over the first substrate on which the bottom plate is formed so that the first side faces downward, so that the pre-exposed layer and the bottom plate are located between the first substrate and the second substrate; The first rolled substrate is gradually unrolled and moved toward the first light source group so that the first side faces upward, the second dot matrix coating mechanism is used to coat the first liquid photosensitive resin layer on the first side, and the first light source group is used to perform ultraviolet exposure and curing on the first liquid photosensitive resin layer from the side where the first side is located and the side where the second side is located; The second rolled substrate is gradually unwound and moved toward the second light source group so that the third side faces upward, the first dot matrix coating mechanism is used to coat the second liquid photosensitive resin layer on the third side, and the second light source group is used to perform ultraviolet exposure and curing on the second liquid photosensitive resin layer from the side where the fourth side is located; The first dot matrix coating mechanism includes a plurality of glue discharge heads arranged regularly, each of which is independently controlled to be opened or closed. A valve is opened at a position where a pattern needs to be set to coat the second liquid photosensitive resin, and a valve is closed or the glue discharge amount is reduced at a position where no pattern is set, thereby realizing the function of local coating; Before dot matrix coating, the image to be transferred is gridded by computer. The grid is used to correspond to the glue head. During the coating process, the grid in the image area opens the valve of the glue head, and the blank area closes the valve of the glue head.

Images