JP5941506B2 - Lenticular and manufacturing method thereof - Google Patents

Description

  The present invention relates to a lenticular for producing a three-dimensional effect on printed matter and a method for manufacturing the same.

  The lenticular is a printed matter that uses a sheet-like lenticular lens, and the pattern changes depending on the viewing angle or a three-dimensional effect is obtained. As a material for lenticular lenses, PET (polyethylene terephthalate) sheet, which is not durable, is often used. However, the sheet price is high, and a three-dimensional image is printed directly on the back side of the lenticular lens. Easy to mass-produce. Also, there is a method of attaching a printed material to the back side of the molded lenticular lens, but considerable technology is required. As described in Patent Document 1, an invention of a lenticular lens printed matter in which a lenticular lens is formed on a part of a printing surface is also disclosed.

JP 2006-251608 A

  However, even if a lenticular is used for a game machine such as a pachinko machine or a slot, an outdoor advertisement, an automobile interior, etc., in the case of a PET sheet, durability against light and heat is weak, and it becomes unusable in a short time. Also, as in Patent Document 1, when trying to mold a lens on the printing surface, the lens cannot be made thick.

  Accordingly, an object of the present invention is to generate a lenticular image that is in focus and has a three-dimensional effect and that has improved mass productivity and durability.

In order to solve the above problems, it lenticular an invention, computer, elongated cut two or more original images based on the designated lens facing the lens pitch, for stereoscopic side by side cut images alternately creates print data as an image, a heat resistant sheet was screen printed so as to transmit the print data from the back by the screen setting mesh print line number that has been created as moire by the lens pitch does not occur, the computer the heat-resistant sheet lens position determined with respect to further set the specified lens thickness and the lens facing the lens pitch from the lens shape, were created to be molded in the lens shape and the lens position forming mold casting the highly durable resin and a heat resistant sheet is disposed are fluidized by heat, high temperature on the printing surface By insert molding the heat sheet surface so that the stereoscopic image taking fat does not deteriorate, possess a lenticular lens concave convex lens is formed, wherein the lenticular lens is semi-cylindrical in It is insert-molded so that the thickness of the resin layer between the cylindrical lens on which convex lenses are arranged and the heat-resistant sheet is increased .

Moreover, lenticular an invention, the heat-resistant sheet is a sheet over bets made polycarbonate, characterized in that.

Moreover, lenticular an invention, the high durability resin is a tree butter made polycarbonate or acrylic, and wherein the.

  The lenticular according to the present invention is characterized in that the lenticular lens is generated by in-mold molding instead of insert molding.

  In the lenticular according to the present invention, the lens shape of the lenticular lens is formed based on a design pattern of a light guide plate.

  Further, the lenticular according to the present invention is characterized in that the lenticular lens is molded in a different lens shape for each part of the stereoscopic image.

  The lenticular according to the present invention is characterized in that the three-dimensional image is obtained by editing two or more images into respective layers and combining them into one.

In the lenticular manufacturing method according to the present invention, a computer cuts two or more original images into long and thin shapes based on a specified lens orientation and lens pitch, and creates print data as a three-dimensional image by alternately arranging the cut images. a data generating step of, after said data creation step, so that the computer, transmits the print data from the back surface of the heat-resistant sheet by a screen set mesh print line number that has been created as moire by the lens pitch does not occur screen and data printing step of printing, after the data printing step, the computer, the heat-resistant sheet a lens position determined with respect to, and set the lens shape from further and designated the lens thickness and the lens direction and the lens pitch, as it molded in the lens shape and the lens position A mold creating step of creating a form type, after said mold creating step, the computer, the heat-resistant sheet disposed poured high durability resin are fluidized by heat, high temperature on the printing surface in the mold by insert molding the surface of the heat-resistant sheet so that the stereoscopic image takes resin does not deteriorate, and the lens molding step of creating a lenticular lens to form a concave convex lens, after the lens molding step, computer, the lens position, the light resistance of the lenticular lens, possess a quality verification step to verify the heat resistance and weather resistance, and the lenticular lens, the cylindrical lens arranged semi-cylindrical convex lens and the heat-resistant sheet It is insert-molded so that the thickness of the resin layer in between increases .

  The lenticular according to the present invention is a deep and clear image in addition to being a focused three-dimensional image, and can provide a colorful three-dimensional image even at night. In addition, the durability is improved, and it can be used for a long period of time in outdoor advertisements and automobile interiors. Furthermore, mass productivity is improved and lenticulars can be provided at low cost.

It is a perspective view of the lenticular which is the present invention. It is a top view of the lenticular which is the present invention. It is a figure which shows the manufacturing method of the lenticular which is this invention. It is a figure explaining the data creation step in the manufacturing method of the lenticular which is this invention. It is a figure explaining the data printing step in the manufacturing method of the lenticular which is this invention. It is a figure explaining the shaping | molding die creation step in the manufacturing method of the lenticular which is this invention. It is a figure explaining the lens shaping | molding step in the manufacturing method of the lenticular which is this invention. It is a figure explaining the case where it replaces with insert molding and is performed by in-mold molding in the manufacturing method of the lenticular which is this invention. It is a figure which shows the case where a lens shape is varied for every part of the lenticular which is this invention.

  Embodiments of the present invention will be described below in detail with reference to the drawings. In addition, what has the same function attaches | subjects the same code | symbol, and the repeated description may be abbreviate | omitted.

  First, the structure of the lenticular according to the present invention will be described. FIG. 1 is a perspective view of a lenticular according to the present invention, and FIG. 2 is a plan view of the lenticular according to the present invention. As shown in FIG. 1, the lenticular 100 includes a sheet 300 and a lenticular lens 500.

  The sheet 300 is a thin mount on which a stereoscopic image 220 displayed on the lenticular 100 is printed. The material of the sheet 300 is mainly a resin, and a heat-resistant sheet made of polycarbonate that is particularly resistant to heat is used. A transparent material is preferable for printing on the front side or the back side of the sheet 300, but a colored translucent material may be used.

  The three-dimensional image 220 is an image edited so that the printed matter on the sheet 300 becomes three-dimensional when viewed through the lenticular lens 500. Note that the stereoscopic image 220 includes not only an image that appears to jump out, but also an image that switches depending on the viewing angle. For example, by gradually shifting the angle, a series of motions are expressed, an image becomes larger or smaller, an image slowly changes to another image, or a combination thereof.

  The lenticular lens 500 is a lens for causing a stereoscopic image 220 printed on a plane to exhibit a stereoscopic effect and other effects. As shown in FIG. 2, the lenticular lens 500 has a plurality of elongated cylindrical lenses 510 arranged on the resin layer 520 so that the unevenness is repeated on the surface. The material of the lenticular lens 500 is mainly a resin, and a particularly highly durable polycarbonate or acrylic highly durable resin is used. Since it is a lens, a transparent material that transmits light is preferable, but it is sufficient that it can transmit light even if it is colored. The lenticular lens 500 may be formed based on the design pattern of the light guide plate. The light guide plate is a plate that uniformly emits light onto the surface when light enters from the end face, and the surface is uneven so that the light is totally reflected inside. That is, the uneven pattern design of the light guide plate is used for lenticular.

  The cylindrical lens 510 is a lens having a shape obtained by cutting a part of a side surface of a cylinder. The cross section of the cylindrical lens 510 is a bowl-shaped convex lens having a refractive power in one direction, but does not have a refractive power in the orthogonal direction. That is, with respect to the cylindrical lenses 510 arranged side by side, if the viewpoint is shifted sideways, the position that can be seen through the cylindrical lens 510 is refracted, but the position that is visible even if the viewpoint is shifted vertically remains unchanged. .

  The resin layer 520 is a layer between the sheet 300 and the cylindrical lens 510, and is a portion that becomes the thickness of the lenticular lens 500. By increasing the thickness of the resin layer 520, the depth of the stereoscopic image 220 is increased and the force is also increased. That is, a stereoscopic effect is produced by adding parallax between an image seen with the left eye and an image seen with the right eye, but the width of the stereoscopic effect can be increased by the thickness.

  Next, the manufacturing method of the lenticular which is this invention is demonstrated. FIG. 3 is a diagram showing a method for manufacturing a lenticular according to the present invention. The lenticular manufacturing method includes data creation step S10, data printing step S20, molding die creation step S30, lens molding step S40, and quality verification step S50. In addition, an additional process may be passed before and after each process, and when there is a part achieved by another method, a part of the process may be omitted. In addition, a part of the process may be replaced with another process as long as it can be replaced by another method.

  The data creation step S10 creates print data 200 for obtaining a stereoscopic effect and other effects with the lenticular 100 from a plurality of images. The print data 200 mainly takes the form of electronic data, but any other format may be used as long as it can recognize an image such as a print on paper. The print data 200 may be created by a printing machine if the printing machine has a data creation function, or may be created by another apparatus and transferred to the printing machine via a recording medium or communication.

  In the data printing step S20, the print data 200 created in the data creation step S10 is printed on the sheet 300 by a method such as screen printing. Screen printing is a stencil that performs printing using a screen that is provided with holes through which ink passes and portions that do not pass through. In screen printing, the screen is made in advance based on the print data 200, but a screen made of silk may be used, but since silk lacks durability, a screen made of fiber such as polyester is used. Also good.

  In the mold creation step S30, a mold 400 for molding the lenticular lens 500 on the sheet 300 on which the print data 200 is printed in the data printing step S20 is created. The overall shape and dimensions of the lenticular lens 500 are designed so that the image on the sheet 300 has a three-dimensional effect and other effects, and the mold is processed based on the shape and dimensions to create the mold 400. The mold 400 may be a metal mold, or may be a resin or other material as long as it does not interfere with the molding of the lenticular lens 500.

  In the lens molding step S40, the sheet 300 is placed on the molding die 400 created in the molding die creation step S30, the material is injected, and the lenticular lens 500 is generated by a technique such as insert molding. As the material, a thermoplastic resin or the like is used. The mold 400 is filled with a resin that has been softened and fluidized by heat. After cooling and solidifying, the mold 400 is taken out. The lenticular lens 500 is preferably formed by insert molding, but may be formed by in-mold formation.

  In the quality verification step S50, the quality of the lenticular 100 generated in the insert molding step S40 is verified. For example, confirmation of the lens position of the lenticular lens 500 with respect to the sheet 300, confirmation of the lens shape, a light resistance test comparing the change of the portion that was exposed to light and the portion that was not exposed to light at a predetermined time, and raising the temperature at a predetermined interval A heat resistance test to confirm the upper limit that can maintain the physical properties, a weather resistance test to confirm whether it can withstand changes in the outdoor natural environment such as sunlight, temperature, humidity, and rainfall, or whether the sheet 300 is a material that easily peels ink or An ink peeling test or the like is performed to confirm whether the ink is easily peeled off under certain conditions.

  Furthermore, each process of the manufacturing method of a lenticular is demonstrated in detail with reference to FIGS. FIG. 4 is a diagram for explaining a data creation step in the lenticular manufacturing method. In the example shown here, an image editing function of the computer 230 is used to create one stereoscopic image 220 from the original image 210 and the original image 211, and the print data 200 edited for printing is stored in the storage device 240. Is the case.

  The computer 230 includes a processor such as a central processing unit, and may be a single device or may be incorporated in another device. The storage device 240 includes a magnetic disk such as a hard disk, a semiconductor such as a memory, an optical disk such as a compact disk, and other recording media. Further, data is exchanged by a method via wiring between devices, a method via a recording medium, a method via a communication line such as a network, and the communication may be wireless as well as wired.

  It is assumed that an application for image editing is installed in the computer 230 and the original image 210 and the original image 211 are stored in the storage device 240. First, the computer 230 activates an application, reads the original image 210 and the original image 211 from the storage device 240, and temporarily stores them in a memory that is a work area. Note that the application includes a plurality of layers for image editing, and each image can be edited with separate layers. In FIG. 4, the original image 210 is placed on layer 1 and the original image 211 is placed on layer 2. Note that editing may be performed on one screen without dividing layers.

  The operator sets the lens orientation 411 and the lens pitch 412 among the parameters of the lenticular 100 shown in FIG. The lens direction 411 is information indicating the direction of each elongated lens constituting the lenticular lens 500. The lens pitch 412 is information indicating how many lenses exist per unit width of the lenticular lens 500. The computer 230 stores the set parameters in the storage device 240 or the like.

  The computer 230 determines the cutting direction of the original image 210 and the original image 211 according to the designated lens direction 411. Further, the computer 230 determines the cutting widths of the original image 210 and the original image 211 based on the designated lens pitch 412. In FIG. 4, the original image 210 of layer 1 is cut into A1 to A4 at equal intervals in the vertical direction, and the original image 211 of layer 2 is cut into B1 to B4 at equal intervals in the vertical direction.

  The computer 230 alternately arranges both the cut images in order to create one connected edited image 212. In FIG. 4, first, the image piece A1 is extracted from the original image 210, and then the image piece B1 is extracted from the original image 211 and arranged next to the image piece A1. Further, the image piece A2 is extracted from the original image 210 and arranged next to the image piece B1, and then the image piece B2 is extracted from the original image 211 and arranged next to the image piece A2. A3, B3, A4, and B4 are similarly arranged.

  The computer 230 further makes necessary adjustments to the edited image 212 and creates the stereoscopic image 220 in the layer 3. Since the width of the edited image 212 is expanded by connecting the two images, the width of each image piece is compressed by half and adjusted to the same width as the original image. The compression of the edited image 212 may be performed by changing the number of pixels or the resolution, or by thinning out a part of the image. The created stereoscopic image 220 is stored in the storage device 240 as print data 200.

  Note that the original image 210 may be copied to create the original image 211, and then the image may be edited. If a part of the duplicated original image 211 is corrected so that the original image 210 can be seen with the left eye and the original image 211 can be seen with the right eye, a parallax occurs between the two images, resulting in a stereoscopic effect. That is, only A1 to A4 are visible at the left viewpoint 222 due to lens refraction, and only B1 to B4 are visible at the right viewpoint 223 due to lens refraction. The difference between the two images causes an optical illusion, and the accompanying effect occurs.

  In the case of the two images of the original image 210 and the original image 211, if the original image 210 is visible from the left side and the original image 211 is visible from the right side, the images are switched in two directions. If there are three original images, the images can be switched in three directions, left, center and right. Furthermore, if the number of original images is increased, the viewpoint can be gradually shifted so that the images change accordingly. Since the number of layers may be increased according to the number of original images, editing of the original image is easy. In addition to the layer of the original image, the layer of the edited image 212 and the layer of the stereoscopic image 220 are facilitated, so that the composition and editing from the original image can be facilitated.

  FIG. 5 is a diagram for explaining a data printing step in the lenticular manufacturing method. In this example, the screen 310 is created based on the print data 200 created by the computer 230 or the like, and printing is performed on the sheet 300. Printing is performed by screen printing. However, printing may be performed manually using tools such as the screen 310, the scraper 330, and the squeegee 331, or may be printed entirely or partially using a printing machine. Also good.

  In the example shown in FIG. 5, the printing machine includes an internal computer having a processor, a memory, and the like, and print data 200 stored in the storage device 240 from the external computer 230 and other information such as parameters are recorded on the recording medium Or it shall be taken in by transfer means, such as communication. The internal or external computer 230 first sets the number of print lines so that moire does not occur when the print data 200 created based on the lens pitch 412 is screen printed in order to create the screen 310.

  A mesh 311 for setting the print data 200 is stretched inside the screen 310. The mesh 311 is a cloth in which silk or synthetic fiber yarns are arranged in a lattice pattern at equal intervals in the vertical and horizontal directions to form a mesh. The number of printed lines of the mesh 311 is a scale indicating the number of warps or wefts per unit width or the number of halftone dots through which ink passes per unit width, that is, the printing accuracy. When the print data 200 is color, the mesh 311 is divided for each color. For example, when the print data 200 is separated into four colors, the mesh 311 is divided into four sheets of a cyan plate, a magenta plate, a yellow plate, and a black plate, a cyan print pattern 320, a magenta print pattern 321, and a yellow print pattern. A print pattern 323 for black 322 is created.

  In screen printing, there may be a stripe pattern called moire that should not exist when printing. Moire occurs when there are a plurality of meshes 311 and the halftone dots of at least two meshes 311 interfere with each other. Therefore, moiré is made inconspicuous by shifting the angle of the halftone dots of each mesh 311. Also, moire may occur when the print data 320 has a regular pattern such as a striped pattern. If the repetitive pattern becomes finer, moire becomes inconspicuous. Therefore, moire is prevented by increasing the number of printed lines on the screen 310 to achieve high definition.

  In the computer 230, the print data 200 is color-separated, and print patterns 320 to 323 that are separated for each color are created in the number of meshes 311 that are separated. For example, a cyan print pattern 320 is drawn on a light-transmitting film with ink that does not transmit light, and an emulsion mixed with a photosensitive agent is applied to the mesh 311. Then, a film is stacked on the mesh 311 and exposed to ultraviolet rays for a predetermined time. The exposed portion is cured, and the unexposed portion of the emulsion is washed away to become a portion through which ink passes. The same applies to magenta, yellow, and black.

  In the printing machine, a sheet 300 to be printed is fixed, and a screen 310 is installed on the printing surface of the sheet 300. A mesh 311 on which a cyan print pattern 320 is drawn is stretched on the screen 310. First, cyan ink 340 is placed on the mesh 311, and the halftone dots of the entire mesh 311 are filled with the ink 340 by the scraper 330. Next, printing is performed by pressing the mesh 311 against the sheet 300 with the squeegee 331 and transferring the ink 340 to the sheet 300. After printing, the sheet 300 remains fixed, and the screen 310 is replaced with a mesh 311 on which a magenta print pattern 321 is drawn. This is repeated until printing is completed for all colors. As a result, the three-dimensional image 220 obtained by combining the print patterns 320 to 323 is printed on the sheet 300.

  FIG. 6 is a diagram for explaining a forming die creation step in the lenticular manufacturing method. First, parameters necessary for forming the lenticular lens 500 on the sheet 300 on which the stereoscopic image 220 is printed are acquired or set. The parameters include lens position 410, lens orientation 411, lens pitch 412, lens thickness 413, lens shape 414, and other information related to the lens. In addition, the shrinkage | contraction of the resin used as the material of a lens is also considered.

  The lens position 410 is information on which position on the sheet 300 the reference point of the lenticular lens 500 hits. The positions may be matched between the upper left of the lenticular lens 500 and the upper left of the sheet 300, or the position from the origin of the sheet 300 may be expressed in the form of coordinates. It is set in the computer 240 before performing the mold creation step S30.

  The lens orientation 411 is information indicating which direction each lens of the lenticular lens 500 is oriented. The lens pitch 412 is information indicating the width of each lens of the lenticular lens 500. If the lens orientation 411 and the lens pitch 412 are set in the data creation step S10 and stored in the storage device 240, they are acquired.

  The lens thickness 413 is the thickness of the resin layer of the lenticular lens 500 and affects the stereoscopic effect of the stereoscopic image 220 printed on the sheet 300. For example, if the lens thickness 413 is increased, the degree to which part of the image pops out can be increased. It may be set in the computer 240 before performing the mold creation step S30, and may be set in the data creation step S10 together with the lens orientation 411 and the lens pitch 412.

  The lens shape 414 relates to the overall shape of the lenticular lens 500, and is information on how much each lens is curved, that is, information on the refractive index. The lens orientation 411 determines the orientation of each lens, the lens pitch 412 determines the width of each lens, and the lens thickness 413 determines the degree of curvature of each lens. Further, it is necessary to set the refractive index so that the position of the image piece that can be seen according to the angle of the viewpoint shifts depending on the number of the original images 210.

  The computer 230 performs an operation related to each parameter based on information acquired from the storage device 240 and information input by an operator from an input device or the like, and stores the calculation result in the storage device 240 again. When parameters regarding the shape of the lenticular lens 500 are obtained, the mold 400 is designed based on the parameters. Furthermore, according to the design, the forming die 400 is processed using a processing apparatus. As the material of the mold 400, tool steel, stainless steel or the like is used. The processed mold 400 is finished by performing a surface treatment such as plating or heat treatment to improve wear resistance.

  FIG. 7 is a diagram for explaining a lens molding step in the lenticular manufacturing method. A lenticular lens 500 is formed by insert molding using the manufactured mold 400. In the insert molding, the sheet insertion, resin injection, and lens removal procedures are performed.

  First, in the sheet insertion, the sheet 300 is placed in the mold 400. In FIG. 7, the forming die 400 has an upper die 401 and a lower die 402 that are detachable up and down, and when the upper die 401 and the lower die 402 are separated, the sheet 300 is taken in and out, and the upper die 401 and the lower die 402 The sheet 300 can be stored in the interior when the sheet 402 is closed. The inner side of the upper die 401 is processed in the shape of the lenticular lens 500, and the inner side of the lower die 402 is processed so that the sheet 300 is disposed.

  Next, in the resin injection, the sheet 300 is accommodated in the lower mold 402 and the resin is poured from the injection port 403 provided in the upper mold 401 into the molding mold 400 in which the upper mold 401 is closed. The resin is in a state where the material of the lenticular lens 500 is made fluid by heat. The three-dimensional image 220 is printed on the sheet 300. However, if there is a possibility that the three-dimensional image 220 is deteriorated when a high-temperature resin is applied to the surface which is the printing surface, the three-dimensional image is formed on the back side of the transparent sheet 300. 220 may be printed so that the stereoscopic image 220 can be seen through.

  Next, in taking out the lens, when the temperature of the resin in the mold 400 decreases and the resin hardens, the upper mold 401 and the lower mold 402 are separated and the lenticular 100 is taken out. By using the mold 400, it is easy to align the lens position 410 of the lenticular lens 500 with respect to the sheet 300, and image pieces corresponding to the number of the original images 210 are within the width of each lens of the lenticular lens 500. If the refractive index of each lens is set appropriately, the image pieces of the original image 210 in an order corresponding to the angle appear to be connected to one from the viewpoint of a certain angle.

  The lenticular according to the present invention is a deep and clear image in addition to being a focused three-dimensional image, and can provide a colorful three-dimensional image even at night. In addition, the durability is improved, and it can be used for a long period of time in outdoor advertisements and automobile interiors. Furthermore, mass productivity is improved and lenticulars can be provided at low cost.

  FIG. 8 is a diagram illustrating a case where the lens molding step is performed by in-mold molding instead of insert molding. The difference from the case of insert molding is that the sheet 300 is not integrated with the lenticular 101 and a three-dimensional image 220 is printed on the bottom surface of the lenticular lens 500. In-mold molding is performed by the procedures of sheet installation, resin injection, and lens removal.

  First, in the sheet installation, the sheet 300 is installed in the mold 400. A three-dimensional image 220 is printed on the sheet 300, but the ink 340 is peeled from the sheet 300 when heat or pressure is applied. Therefore, the ink 340 needs to be on the front surface of the sheet 300 instead of the back surface. A form in which the sheets 300 are replaced one by one for each molding, or a form in which the elongated sheets 300 are sequentially moved by a certain length may be used.

  Next, in the resin injection, the sheet 300 is accommodated in the lower mold 402 and the resin 400 that is fluidized by heat from the injection port 403 provided in the upper mold 401 is formed on the mold 400 in which the upper mold 401 is closed. Pour. On the surface where the sheet 300 and the resin are combined, the ink 340 on the sheet 300 is transferred to the lenticular lens 500 side by the heat and pressure of the resin.

  Next, in taking out the lens, when the temperature of the resin in the mold 400 is lowered and the resin is cured, the upper mold 401 and the lower mold 402 are separated and the three-dimensional image 220 is transferred, and the three-dimensional image 220. The sheet 300 from which the material has peeled is taken out. Also by in-mold molding, the lenticular 100 can be manufactured with substantially the same quality as insert molding.

  FIG. 9 is a diagram illustrating a case where the lens shape is changed for each lenticular portion. In the lenticular 102, the lens direction of the upper lenticular lens 500 is the vertical direction, and the lens direction of the lower lenticular lens 501 is the horizontal direction. The lenticular lens 500 uses the stereoscopic image 220, and the lenticular lens 501 uses the stereoscopic image 221. Are used, each with different visual effects.

  The lenticular lens 500 and the lenticular lens 501 may be created by separate molds 400 and connected up and down after completion. Alternatively, the mold 400 in a state where the lenticular lens 500 and the lenticular lens 501 are coupled may be created. good. Accordingly, the lenticular 102 having a different lens shape 414 for each part and partially different visual effects can be manufactured by one molding using one molding die 400.

  As mentioned above, although the Example of this invention was described, it is not limited to these. According to the present invention, the durability of the lenticular including light resistance, heat resistance, weather resistance, etc. is improved, so pachinko and slot machines, amusement equipment, vending machine displays and buttons, outdoor advertising, automobile interiors, etc. For example, it is possible to give a flashy decorative pattern using a lenticular. Further, although the quality of the lenticular is improved, the mass productivity is improved, so that the lenticular can be provided at a low cost.

100, 101, 102: Lenticular 200: Print data 210, 211: Original image 212: Edited image 220, 221: Stereoscopic image 222, 223: View point 230: Computer 240: Storage device
300: Sheet 310: Screen 311: Mesh 320, 321, 322, 323: Print pattern 330: Scraper 331: Squeegee 340: Ink 400: Mold 400: Upper mold 402: Lower mold 403: Injection port 410: Lens position 411: Lens orientation 412: Lens pitch 413: Lens shape 414: Lens thickness 500, 501: Lenticular lens 510: Cylindrical lens 520: Resin layer S10: Data creation S20: Data printing S30: Mold creation S40: Lens molding S50: Quality verification

Claims (7)

  A data creation step in which a computer cuts two or more original images into elongated shapes based on a specified lens orientation and lens pitch, and creates print data as stereoscopic images by alternately arranging the cut images;
  After the data creation step, the computer prints the data by screen printing so that the print data is transmitted from the back surface of the heat-resistant sheet by the screen in which the mesh is created with the number of print lines set so that moire does not occur at the lens pitch. Steps,
  After the data printing step, the computer determines a lens position with respect to the heat-resistant sheet, further sets a lens shape from the specified lens thickness, the lens orientation, and the lens pitch, and forms with the lens position and the lens shape. A mold making step to create a mold as
  After the molding die creation step, the computer places the heat-resistant sheet in the molding die and pours a highly durable resin fluidized by heat so that a high-temperature resin is applied to the printing surface and the stereoscopic image does not deteriorate. A lens molding step for forming a lenticular lens by forming an uneven lens by insert molding on the surface of the heat-resistant sheet,
  After the lens molding step, a computer has a quality verification step for confirming the lens position, light resistance, heat resistance and weather resistance of the lenticular lens,
  The lenticular lens has a resin layer that is insert-molded with a thickness between a cylindrical lens in which bowl-shaped convex lenses are arranged and the heat-resistant sheet.
  A method of manufacturing a lenticular characterized by the above. The heat-resistant sheet is a polycarbonate sheet,
The method for producing a lenticular according to claim 1. The highly durable resin is a polycarbonate or acrylic resin,
The method for producing a lenticular according to claim 1 or 2, characterized in that The lenticular lens is generated by in-mold molding instead of insert molding.
The method for producing a lenticular according to any one of claims 1 to 3. The lens shape of the lenticular lens is formed based on the design pattern of the light guide plate,
The method for producing a lenticular according to any one of claims 1 to 4, wherein: The lenticular lens is molded in a different lens shape for each part of the stereoscopic image.
The method for producing a lenticular according to any one of claims 1 to 5, wherein: The stereoscopic image is edited by dividing two or more images into layers, and synthesized into one.
The method for producing a lenticular according to any one of claims 1 to 6, wherein:

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