KR20240104733A - Metal plate continuous printing apparatus and metal plate printing method - Google Patents

Abstract

The present invention provides a continuous metal plate printing device and a continuous metal plate printing method that can stably print images such as letters and pictures on the surface of a metal material at high speed.
A continuous metal plate printing device according to an aspect of the present invention includes a transfer belt on which toner is transferred by a printer equipment and moved by a transfer roller, and a printing roller that presses the transfer belt onto which the toner is transferred toward the metal plate and makes contact with the metal plate. , a transfer support roller positioned between the printing roller and the metal plate, a pre-heating unit that heats the metal plate onto which the toner is transferred to a first temperature, and a surface of the metal plate discharged from the pre-heating unit. It may include a pressure roller that pressurizes the metal plate.

Description

Metal plate continuous printing device and metal plate continuous printing method {METAL PLATE CONTINUOUS PRINTING APPARATUS AND METAL PLATE PRINTING METHOD}

The present invention relates to a continuous metal plate printing device and a metal plate continuous printing method for continuously printing images such as letters and pictures on the surface of a metal plate.

In general, methods for printing images such as letters and pictures on the surface of metal materials include polymer transfer, roll transfer, and inkjet spray printing.

The polymer transfer method prints an image film in the form of a sheet and transfers the image to the surface of a metal using methods such as thermal transfer or chemical transfer. The method of transferring images on a metal surface using a film allows printing on film, but has the disadvantage of being slow in manufacturing speed as the film is transferred to a steel plate, and the image attached to the metal surface in the form of a film may be deformed depending on temperature or weather. There is a downside to this.

The roll transfer method forms a certain pattern on the surface of the roll and transfers the image to the surface of the metal material using the roll to roll method. However, the transferred images are limited to repetitive images, and in order to use the roll transfer method, a roll with each image patterned must be prepared. Therefore, it is difficult to prepare a patterned roll each time for various images. .

The inkjet spray printing method is a method of printing images or letters on the surface of a metal material using liquid ink containing pigment and polymer resin. Since the inkjet spray printing method uses liquid ink, clogging occurs in the nozzle through which ink is sprayed, requiring not only nozzle management but also periodic cleaning and replacement of the nozzle. In addition, since liquid ink is used, stabilization after ink injection is essential, and it is difficult to manufacture using the roll-to-roll method, so its use is limited to the batch type. In particular, inkjet spray print materials are made up of liquid polymers and pigments form images within them, so there is a problem that the printed image may peel off when bending or cutting.

Recently, metal materials are used in various fields, and images such as letters and pictures are increasingly applied to metal surfaces. However, the existing image printing method is a method of printing on the surface of paper or polymer materials, and there are technical and production limitations in applying it to the surface of metal materials. Therefore, there is a need for a method to solve the limitations of the conventional printing method.

Based on the technical background described above, the present invention provides a continuous metal plate printing device and a continuous metal plate printing method that can stably print images such as letters and pictures on the surface of a metal material at high speed.

A continuous metal plate printing device according to an aspect of the present invention includes a transfer belt on which toner is transferred by a printer equipment and moved by a transfer roller, and a printing roller that presses the transfer belt onto which the toner is transferred toward the metal plate and makes contact with the metal plate. , a transfer support roller positioned between the printing roller and the metal plate, a pre-heating unit that heats the metal plate onto which the toner is transferred to a first temperature, and a surface of the metal plate discharged from the pre-heating unit. It may include a pressure roller that pressurizes the metal plate.

The pressure roller according to one aspect of the present invention may pressurize the metal plate while heating it to a second temperature.

The first temperature according to one aspect of the present invention may be higher than the second temperature.

The pre-heating unit according to one aspect of the present invention heats the metal plate by an indirect heating method, and the pressure roller may heat the metal plate by contacting the metal plate.

The transfer support roller according to one aspect of the present invention may be installed to be movable in the thickness direction of the metal plate.

The continuous metal plate printing device according to one aspect of the present invention may further include a pretreatment device that is installed on the upstream side of the support roller and increases adhesion efficiency between the metal plate and the toner.

The pretreatment device according to one aspect of the present invention may be comprised of a shot blast device that increases the surface roughness of the metal plate.

The pretreatment device according to one aspect of the present invention may be a plasma surface treatment device that increases the adhesion efficiency of toner by colliding plasma particles with the surface of the metal plate.

The pretreatment device according to one aspect of the present invention may be comprised of a charging device that applies charge to the surface of the metal plate.

The continuous metal plate printing device according to one aspect of the present invention may further include a surface coating device for coating the metal plate with a polymer material.

The continuous metal plate printing method according to one aspect of the present invention includes a belt transfer step of printing toner on a transfer belt, a metal transfer step of transferring the toner to a metal plate by bringing the toner-printed transfer belt into contact with a metal plate, and the metal plate to which the toner is transferred. It may include a pre-heating step of heating to a first temperature, and a fixation step of pressurizing the pre-heated metal plate to increase the adhesion between the toner and the metal plate.

The fixing step according to one aspect of the present invention may be performed by pressing the metal plate while heating it to a second temperature.

The first temperature according to one aspect of the present invention may be higher than the second temperature.

The pre-heating step according to one aspect of the present invention may heat the metal plate by indirect heating.

The continuous metal plate printing method according to one aspect of the present invention may further include a pretreatment step to increase the adhesion of the toner by treating the surface of the metal plate.

The pretreatment step according to one aspect of the present invention can increase surface roughness by colliding a metal ball with the metal plate.

The pretreatment step according to one aspect of the present invention can increase the adhesion efficiency of toner by causing plasma particles to collide with the surface of the metal plate.

The pretreatment step according to one aspect of the present invention may apply an electric charge to the surface of the metal plate.

The continuous metal plate printing method according to one aspect of the present invention may further include a surface coating step of coating the metal plate with a polymer material.

As described above, the continuous metal plate printing device according to one aspect of the present invention prints toner on a metal plate using a transfer belt, and includes a pre-heating unit and a pressure roller, so it can print on the metal plate quickly and stably.

1 is a configuration diagram showing a continuous metal plate printing device according to a first embodiment of the present invention.
Figure 2 is a flowchart for explaining a method for continuously printing a metal plate according to the first embodiment of the present invention.
Figure 3 is a configuration diagram showing a continuous metal plate printing device according to a second embodiment of the present invention.
Figure 4 is a flowchart for explaining a method for continuously printing a metal plate according to a second embodiment of the present invention.
Figure 5 is a configuration diagram showing a continuous metal plate printing device according to a third embodiment of the present invention.
Figure 6 is a flowchart for explaining a method of continuously printing a metal plate according to a third embodiment of the present invention.
Figure 7 is a configuration diagram showing a continuous metal plate printing device according to a fourth embodiment of the present invention.

Since the present invention can be modified in various ways and can have various embodiments, specific embodiments will be exemplified and explained in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all transformations, equivalents, and substitutes included in the spirit and technical scope of the present invention.

The terms used in the present invention are only used to describe specific embodiments and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In the present invention, terms such as 'include' or 'have' are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. At this time, note that in the attached drawings, like components are indicated by the same symbols whenever possible. Additionally, detailed descriptions of well-known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some components are exaggerated, omitted, or schematically shown in the accompanying drawings.

1 is a configuration diagram showing a continuous metal plate printing device according to a first embodiment of the present invention.

Referring to FIG. 1, the metal plate continuous printing device 101 according to the first embodiment is comprised of a roll-to-roll type printing device, and an image is printed on the surface of a continuously moving metal plate 130. It is a device that prints. Here, image is defined to include letters, shapes, pictures, etc. Additionally, images can be in various forms, such as monochromatic, multicolored, achromatic, chromatic, and three-dimensional.

The metal plate continuous printing device 101 according to the first embodiment includes a printer equipment 110, a transfer belt 125, a pre-processing device 152, a printing roller 124, a transfer support roller 141, and a pre-heating unit ( 156), and may include a pressure roller 157.

The printer equipment 110 is a device that forms an image by transferring toner TN1 to the transfer belt 125. The printer equipment 110 includes a photosensitive drum 115, an exposure unit 116, a toner storage unit 112, a developing roller 113, a drum charging unit 114, a scraper 117, and a recovery container 118. can do.

The photosensitive drum 115 rotates in contact with the transfer belt 125 and transfers the toner TN1 attached to the surface to the transfer belt 125 . The photosensitive drum 115 is sufficient as long as it is commonly used in the technical field to which the present invention pertains, and its type is not particularly limited. As a preferred example, an Organic Photo Conductor (OPC) drum may be used.

The toner storage unit 112 stores toner TN1 and provides the toner TN1 to the developing roller 113. The developing roller 113 rotates in contact with the photosensitive drum 115 and transfers the toner TN1 from the toner storage unit 112 to the photosensitive drum 115. However, the developing roller 113 is not essential, and in some cases, the toner TN1 may be provided directly from the toner storage unit 112 to the photosensitive drum 115.

Meanwhile, the toner TN1 is used to form an image on the metal plate 130, and any toner known to those skilled in the art in the technical field to which the present invention pertains can be used, and the type is not particularly limited. For example, the toner TN1 may be made of a material having a polymer structure. In addition, in the present invention, materials that can provide various functions (e.g., fluorescent materials, magnetic materials, electrically conductive materials, etc.) can be added to the toner (TN1), and not only can an image with a function be implemented. , the particles of the toner (TN1) can be made up of various sizes to provide roughness or to implement a three-dimensional shape.

The drum charging unit 114 rotates in contact with the photosensitive drum 115 and applies electrostatic charge to the photosensitive drum 115. The drum charging unit 114 may be made of corona wire. The exposure unit 116 radiates light energy to the photosensitive drum 115, and due to the light energy, some charges are removed from the surface of the photosensitive drum 115, and the toner (TN1) attaches only to a portion of the surface of the photosensitive drum 115. do. Light energy can come from lasers or LEDs. The exposure unit 116 can remove charges by scanning the surface of the photosensitive drum 115 according to a required image.

The scraper 117 separates the toner TN1 remaining on the surface of the photosensitive drum 115 after the toner is transferred from the photosensitive drum 115 to the transfer belt 125, and the remaining toner TN1 is transferred to the transfer belt 125. 125) to prevent print quality from deteriorating. The recovery container 118 collects and stores the toner TN1 separated by the scraper 117.

The printer equipment 110 according to this embodiment includes a plurality of photosensitive drums 115, and each photosensitive drum 115 is equipped with a developing roller 113, a drum charging unit 114, a scraper 117, and an exposure unit. (116) etc. may be installed. Each photosensitive drum 115 can transfer toner of different colors or different materials.

The transfer belt 125 moves in contact with the metal plate 130, transfers the toner TN1 attached to the surface to the surface of the metal plate 130, fixes it, and simultaneously protects the surface of the photosensitive drum 115, It plays a role in improving the quality of images. When the hardness of the metal plate 130 is high, the surface of the photosensitive drum 115 may be damaged due to contact between the metal plate and the photosensitive drum 115. When the transfer belt 125 is applied, the photosensitive drum 115 is damaged. can be prevented.

The transfer belt 125 includes a plurality of belt support rollers 127 that support the transfer belt 125 at the portion in contact with the photosensitive drum 115 and a plurality of belt drive rollers 121 and 123 for moving the transfer belt 125. ) can be installed. In addition, a belt charging unit 128 may be installed on the transfer belt 125 to increase the adhesion between the transfer belt 125 and the toner TN1 by charging the surface of the transfer belt 125 before receiving the toner TN1. there is. Additionally, a tension roller (not shown) may be installed on the transfer belt 125 to maintain the tension of the transfer belt 125.

The printing roller 124 presses the transfer belt 125 on which the toner TN1 is transferred toward the metal plate 130 and brings it into contact with the metal plate 130 . The printing roller 124 presses the transfer belt 125 downward, and may be maintained at room temperature or may generate heat.

The metal plate 130 may be made of various materials such as steel plates, non-ferrous metals, and metal alloys, and may be of a roll type, extending in the longitudinal direction and being wound around a roller, etc. The metal plate 130 includes a pretreatment device 152, a transfer support roller 141, a first charging roller 142, a pre-heating unit 156, a second charging roller 145, a pressure roller 157, and an auxiliary roller ( 143) can be installed.

The pretreatment device 152 is installed on the upstream side (rearward based on the moving direction of the metal plate) of the printing roller 124 and processes the surface of the metal plate 130 flowing into the printing roller 124. The pretreatment device 152 is a device that increases the adhesion efficiency between the metal plate 130 and the toner TN1. The pretreatment device 152 can increase the adhesion efficiency between the metal plate and the toner in various ways.

The pretreatment device 152 may be a shot blast device that increases the surface roughness of the metal plate 130 by colliding metal balls with the surface of the metal plate 130. When the surface roughness of the metal plate 130 increases by the pretreatment device 152, the toner TN1 can be easily adhered to the metal plate 130.

Additionally, the pretreatment device 152 may be a plasma surface treatment device that increases the adhesion efficiency of the toner TN1 by colliding plasma particles with the surface of the metal plate 130. When plasma particles collide with the surface of the metal plate 130, the surface of the metal plate 130 is ionized and the toner TN1 can be easily adhered to the metal plate 130.

Additionally, the pretreatment device 152 may be a charging device that applies electric charge to the surface of the metal plate 130. When an electric charge is applied to the surface of the metal plate 130, the toner TN1 with an opposite charge is pulled and the toner TN1 can be stably transferred to the metal plate 130.

The first charging roller 142 may be formed as a roller that applies electric charge to the surface of the metal plate 130. The transfer support roller 141 is disposed below the printing roller 124, faces the printing roller 124 with the metal plate 130 interposed therebetween, and supports the metal plate 130.

An actuator 146 may be installed on the first charging roller 142 and the transfer support roller 141 to move the first charging roller 142 and the transfer support roller 141 in the thickness direction of the metal plate 130. The first charging roller 142 can be moved in the vertical direction on the transfer support roller 141 by the actuator 146, and thus an image can be printed on the metal plate 130 having various thicknesses.

The pre-heating unit 156 is disposed on the downstream side of the transfer support roller 141 (based on the moving direction of the metal plate) and heats the metal plate 130 on which the toner TN1 is transferred to the first temperature. The pre-heating unit 156 can heat the metal plate in various ways, such as induction heating, infrared heating, and radiation heating. The pre-heating unit 156 may heat the metal plate 130 through a non-contact heating method without directly contacting the metal plate 130.

At this time, the pre-heating unit 156 may have a structure whose length is expandable. Here, the length of the pre-heating unit 156 represents a direction parallel to the moving direction of the metal plate 130. That is, in order to heat the metal plate 130 to a preset first temperature according to the heat capacity of the passing metal plate 130, the length of the pre-heating unit 156 may be expanded or contracted by the driving member.

The second charging roller 145 is installed between the pressure roller 157 and the pre-heating unit 156 and applies an electric charge to the surface of the metal plate 130. The second charging roller 145 prevents the toner TN1 from being reverse transferred to the pressure roller 157 when the pressure roller 157 and the toner TN1 come into contact.

The pressure roller 157 comes into contact with the surface of the metal plate 130 on which the toner TN1 is transferred and heats the metal plate 130 to the second temperature. Here, the fact that the pressure roller 157 comes into contact with the metal plate 130 means that it comes into contact with the metal plate 130 through a thin toner layer.

The first temperature may be greater than the second temperature. The first temperature may be 120°C to 200°C, and the second temperature may be 60°C to 100°C. However, the present invention is not limited to this, and the first temperature and the second temperature may be set to various ranges depending on the material and thickness of the metal plate 130.

The pressure roller 157 heats and pressurizes the metal plate 130 and the toner TN1 to press the toner TN1 onto the metal plate 130. In this process, the toner TN1 is attached to the pressure roller 157, a reversal phenomenon. This can happen. When reversal occurs, it causes serious quality problems.

However, according to this embodiment, the pre-heating unit 156 heats the metal plate 130 higher than the temperature of the pressure roller 157 to primarily compress the toner TN1 and the metal plate 130, so that the pressure roller 157 It is possible to prevent the toner (TN1) from being reversed during the heating and pressurizing process. The auxiliary roller 143 is disposed to face the pressure roller 157 with the metal plate 130 interposed therebetween, supports the metal plate 130, and the auxiliary roller 143 may heat the metal plate 130.

Hereinafter, a method for continuously printing a metal plate according to the first embodiment of the present invention will be described.

Figure 2 is a flowchart for explaining a method for continuously printing a metal plate according to the first embodiment of the present invention.

1 and 2, the metal plate continuous printing method according to the first embodiment includes a pre-transfer step (S101), a pre-treatment step (S102), a metal plate transfer step (S103), a pre-heating step (S104), and fixation. It may include step S105.

The pre-transfer step (S101) forms an image on the transfer belt 125 by printing toner TN1 on the transfer belt 125. The pre-transfer step (S101) includes a drum charging step of charging the photosensitive drum 115, an exposure step of removing the charge by irradiating light energy to the photosensitive drum 115, and a photosensitive drum 115 using the developing roller 113. a developing step of transferring toner to the transfer belt 125, a belt charging step of applying and charging the transfer belt 125, and transferring the toner to the transfer belt 125 by bringing the rotating photosensitive drum 115 into contact with the transfer belt 125. It may include a belt printing step and a scraping step of removing the toner (TN1) remaining on the photosensitive drum 115 using a scraper 117.

In the pretreatment step (S102), the surface of the metal plate 130 is treated to increase the adhesion efficiency between the toner TN1 and the metal plate 130. In the pretreatment step (S102), the surface roughness of the metal plate 130 can be increased by colliding a metal ball on the surface of the metal plate 130 using a shot blast device. Additionally, in the pretreatment step (S102), the adhesion efficiency of the toner (TN1) can be increased by colliding plasma particles on the surface of the metal plate 130 using a plasma surface treatment device. Additionally, in the pretreatment step (S102), a charge may be applied to the surface of the metal plate 130 using a charging device.

In the metal plate transfer step (S103), the toner is transferred to the metal plate 130 by bringing the toner-printed transfer belt 125 into contact with the metal plate. In the metal plate transfer step (S103), the transfer belt 125 on which the toner TN1 is transferred is pressed toward the metal plate 130 using the printing roller 124 and brought into contact with the metal plate 130 to transfer the toner to the metal plate 130. It can be delivered. The metal plate transfer step (S103) includes moving the transfer support roller 141 in the thickness direction of the metal plate 130, applying an electric charge to the metal plate 130, and contacting the transfer belt 125 and the metal plate 130. May include steps.

In the pre-heating step (S104), the metal plate 130 on which the toner TN1 is transferred is heated to a first temperature. The pre-heating step (S104) heats the metal plate 130 using various methods such as induction heating, infrared heating, and radiation heating. However, the metal plate 130 may be heated using a non-contact heating method without directly contacting the metal plate 130.

In the adhesion step (S105), the preheated metal plate 130 is pressed to increase the adhesion between the toner TN1 and the metal plate 130. In the fixing step (S105), charge may be applied to the heated metal plate 130 and then pressure may be applied using the pressure roller 157.

Additionally, in the fixing step (S105), the metal plate 130 may be heated and pressed using the pressure roller 157 heated to a second temperature lower than the first temperature. In addition, the fixing step (S105) is arranged so that the pressure roller 157 and the metal plate 130 face each other, and the metal plate 130 is connected to the auxiliary roller 143 heated to a third temperature lower than the second temperature. The metal plate 130 can be pressed while supporting it.

Hereinafter, a continuous metal plate printing device according to a second embodiment of the present invention will be described.

Figure 3 is a configuration diagram showing a continuous metal plate printing device according to a second embodiment of the present invention.

3, the continuous metal plate printing device 102 according to this embodiment has the same structure as the continuous metal plate printing device according to the first embodiment described above, except for the surface coating device 153, and thus has the same structure. Redundant description of the configuration is omitted.

The surface coating device 153 forms a coating layer by coating a polymer material on the surface of the metal plate 130. The surface coating device 153 can coat a transparent material or a white material. Additionally, the printing roller 124 transfers the toner TN1 onto the coating layer to form an image.

When a coating layer is formed on the metal plate 130 as in this embodiment, the surface roughness of the metal plate 130 can be controlled by the coating layer. In addition, not only can the surface temperature of the metal plate 130 easily increase by the coating layer, but the adhesion efficiency between the toner TN1 and the coating layer can be improved when heated. Additionally, if the coating layer is made of white, the clarity of the image can be increased.

Hereinafter, a method for continuously printing a metal plate according to a second embodiment of the present invention will be described.

Figure 4 is a flowchart for explaining a method for continuously printing a metal plate according to a second embodiment of the present invention.

3 and 4, the continuous metal plate printing method according to the second embodiment includes a pre-transfer step (S201), a surface coating step (S202), a metal plate transfer step (S203), a pre-heating step (S204), It may include a fixation step (S205).

Since the continuous metal plate printing method according to the second embodiment is comprised of the same process as the metal plate continuous printing method according to the first embodiment described above except for the surface coating step (S202), redundant description of the same process will be omitted.

In the surface coating step (S202), a polymer material is applied to the surface of the metal plate 130 using the surface coating device 153 to form a coating layer. The surface coating step (S202) can coat a transparent material or a white material. Meanwhile, in the metal plate transfer step (S203), an image is formed by transferring toner onto the coating layer.

Hereinafter, a metal plate continuous printing device according to a third embodiment of the present invention will be described.

Figure 5 is a configuration diagram showing a continuous metal plate printing device according to a third embodiment of the present invention.

5, the metal plate continuous printing device 103 according to the present embodiment is the same as the metal plate continuous printing device according to the first embodiment described above, except for the surface coating device 153 and the auxiliary roller 148. Since it has the same structure, duplicate descriptions of the same structure will be omitted.

The surface coating device 153 forms a coating layer by coating a polymer material on the surface of the metal plate 130. The surface coating device 153 can coat a transparent material or a white material. Additionally, the printing roller 124 transfers the toner TN1 onto the coating layer to form an image.

Meanwhile, the pretreatment device 152 is installed downstream (front) of the surface coating device 153 and processes the surface of the metal plate 130 on which the coating layer is formed. The pretreatment device 152 may be a shot blast device that collides metal balls with the surface of the coating layer, or a plasma surface treatment device that increases the adhesion efficiency of the toner by colliding plasma particles with the surface of the coating layer.

The auxiliary roller 148 is disposed to face the pressure roller 157 with the metal plate 130 interposed therebetween, and supports the metal plate 130. The auxiliary roller 148 may apply electric charge to the surface of the metal plate 130.

Hereinafter, a method for continuously printing a metal plate according to a third embodiment of the present invention will be described.

Figure 6 is a flowchart for explaining a method for continuously printing a metal plate according to a third embodiment of the present invention.

5 and 6, the continuous metal plate printing method according to the third embodiment includes a pre-transfer step (S301), a surface coating step (S302), a pre-treatment step (S303), a metal plate transfer step (S304), and a pre-treatment step (S303). It may include a heating step (S305) and a fixing step (S306).

The continuous metal plate printing method according to the third embodiment is made up of the same process as the metal plate continuous printing method according to the first embodiment described above except for the surface coating step (S302) and the pretreatment step (S303), so the same process is performed. Redundant explanations are omitted.

In the surface coating step (S302), a polymer material is applied to the surface of the metal plate 130 using the surface coating device 153 to form a coating layer. The surface coating step (S302) can coat a transparent material or a white material. Meanwhile, in the metal plate transfer step (S304), an image is formed by transferring the toner (TN1) onto the coating layer.

Additionally, the pretreatment step (S303) processes the surface of the metal plate 130 on which the coating layer is formed. In the pretreatment step, a metal ball can collide with the surface of the coating layer using a shot blast device, and the adhesion efficiency of the toner (TN1) can be increased by colliding plasma particles with the surface of the coating layer using a plasma surface treatment device.

Hereinafter, a metal plate continuous printing device according to a fourth embodiment of the present invention will be described.

Figure 7 is a configuration diagram showing a continuous metal plate printing device according to a fourth embodiment of the present invention.

7, the metal plate continuous printing device 104 according to the present embodiment is similar to the above-described second embodiment except for the printer equipment 180, the transfer support roller 144, and the auxiliary roller 147. Since it has the same structure as the metal plate continuous printing device described above, redundant description of the same configuration will be omitted.

The printer equipment 180 is a device that forms an image by transferring toner TN1 to the transfer belt 125. The printer equipment 180 includes a photosensitive drum 185, an exposure unit 186, a toner storage unit 182, a developing roller 183, a drum charging unit 184, a scraper 187, and a recovery container 188. can do.

The photosensitive drum 185 rotates in contact with the transfer belt 125 and transfers the toner TN1 attached to the surface to the transfer belt 125 . The toner storage unit 182 stores toner TN1 and provides the toner TN1 to the developing roller 183. The developing roller 113 rotates in contact with the photosensitive drum 185 and transfers the toner TN1 from the toner storage unit 182 to the photosensitive drum 185. The toner TN1 forms an image on the metal plate 130 and is composed of a single color. The drum charging unit 184 rotates in contact with the photosensitive drum and applies electrostatic charge to the photosensitive drum. The exposure unit 186 can remove charges by scanning the surface of the photosensitive drum 185 according to a required image. The scraper 187 separates the toner TN1 remaining on the surface of the photosensitive drum 185, and the recovery container 188 collects and stores the toner separated by the scraper. The printer equipment 180 includes one photosensitive drum 185 and can print a single color using one photosensitive drum 185.

The transfer support roller 144 is disposed below the printing roller 124 and faces the printing roller 124 with the metal plate 130 interposed therebetween. The transfer support roller 144 may apply electric charge to the surface of the metal plate 130. An actuator 146 may be installed on the transfer support roller 144 to move the transfer support roller 144 in the thickness direction of the metal plate 130. Accordingly, images can be printed on the metal plate 130 having various thicknesses.

A heating wire may be installed inside the auxiliary roller 147, and the metal plate 130 may be heated to a third temperature lower than the second temperature. When the pressure roller 157 and the auxiliary roller 147 simultaneously heat the metal plate 130, the temperature of the metal plate 130 can be more easily raised.

Above, an embodiment of the present invention has been described, but those skilled in the art can add, change, delete or add components without departing from the spirit of the present invention as set forth in the patent claims. The present invention may be modified and changed in various ways, and this will also be included within the scope of rights of the present invention.

101, 102, 103, 104: Metal plate continuous printing device
110, 180: printer equipment 112, 182: toner storage unit
113, 183: developing roller 114, 184: drum charging unit
115, 185: photosensitive drum 116, 186: exposure unit
117, 187: scraper 118, 188: recovery container
121, 123: Belt drive roller 124: Printing roller
125: Transfer belt 127: Belt support roller
130: Metal plate 141: Transfer support roller
142: first charging roller 143: auxiliary roller
145: second charging roller 146: actuator
152: Pretreatment device 153: Surface coating device
156: pre-heating unit 157: pressure roller

Claims (19)

In a printing device for printing on a metal plate,
A transfer belt on which toner is transferred by the printer equipment and moved by a transfer roller;
a printing roller that presses the transfer belt onto which the toner is transferred toward the metal plate and makes contact with the metal plate;
a transfer support roller positioned between the printing roller and the metal plate;
a pre-heating unit that heats the metal plate onto which the toner is transferred to a first temperature;
a pressure roller that contacts the surface of the metal plate discharged from the pre-heating unit and presses the metal plate;
A metal plate continuous printing device comprising a. According to claim 1,
A continuous metal plate printing device, characterized in that the pressure roller pressurizes the metal plate while heating it to a second temperature. According to claim 1,
The first temperature is a continuous metal plate printing device, characterized in that the temperature is higher than the second temperature. According to clause 2,
The pre-heating unit heats the metal plate using an indirect heating method, and the pressure roller heats the metal plate by contacting the metal plate. According to claim 1,
A continuous metal plate printing device, wherein the transfer support roller is installed to be movable in the thickness direction of the metal plate. According to clause 5,
A continuous metal plate printing device installed on an upstream side of the support roller and further comprising a pretreatment device that increases adhesion efficiency between the metal plate and the toner. According to clause 6,
A continuous metal plate printing device, characterized in that the pretreatment device consists of a shot blast device that increases the surface roughness of the metal plate. According to clause 6,
The pretreatment device is a continuous metal plate printing device, characterized in that it consists of a plasma surface treatment device that increases the adhesion efficiency of the toner by colliding plasma particles on the surface of the metal plate. According to clause 6,
A continuous metal plate printing device, characterized in that the pretreatment device consists of a charging device that applies an electric charge to the surface of the metal plate. According to clause 6,
A continuous metal plate printing device further comprising a surface coating device for coating the metal plate with a polymer material. a belt transfer step of printing toner on the transfer belt;
A metal transfer step of transferring the toner to the metal plate by bringing a transfer belt on which the toner is printed into contact with the metal plate;
A pre-heating step of heating the metal plate on which the toner is transferred to a first temperature; and
A fixing step of pressurizing the preheated metal plate to increase the adhesion between the toner and the metal plate;
A continuous metal plate printing method comprising: According to claim 11,
The fixing step is a method of continuously printing a metal plate, characterized in that the metal plate is heated to a second temperature and pressed. According to claim 12,
The first temperature is a continuous metal plate printing method, characterized in that the temperature is higher than the second temperature. According to claim 12,
The pre-heating step is a continuous metal plate printing method, characterized in that the metal plate is heated by an indirect heating method. According to claim 11,
A continuous metal plate printing method, characterized in that it further comprises a pretreatment step of increasing the adhesion of the toner by treating the surface of the metal plate. According to claim 15,
The pretreatment step is a method of continuously printing a metal plate, characterized in that the surface roughness is increased by colliding a metal ball with the metal plate. According to claim 15,
The pretreatment step is a continuous metal plate printing method characterized in that the adhesion efficiency of the toner is increased by colliding plasma particles with the surface of the metal plate. According to claim 15,
The pretreatment step is a continuous metal plate printing method, characterized in that an electric charge is applied to the surface of the metal plate. According to clause 6,
A continuous metal plate printing method further comprising a surface coating step of coating the metal plate with a polymer material.

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