JP2006251608A - Lenticular lens printed matter and manufacturing method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lenticular lens printed matter which has a stereoscopic image and/or a variable image which can be manufactured at a step of printing on lens resin and molding the lens without using a ready-made lenticular lens plate, and also, which is improved in reproducibility of the stereoscopic image or the like, and to provide a manufacturing method of the lenticular lens printed matter. <P>SOLUTION: The lenticular lens printed matter 1p has the stereoscopic image 2 and/or the variable image 3 using the lenticular lens, the lenticular lens 5 is obtained by molding UV curing type resin with a silk screen printed by using a transparent lenticular lens matrix, and hardening the resin, the lenticular lens pitch is set to be 75 to 180μm, the height is set to be 100 to 400μm. Regarding the manufacturing method of the printed matter, after screen-printing the UV curing type lens resin on a printing base material surface with the stereoscopic image and/or the variable image printed, the aligned lens matrix is pressed against the resin so as to mold the resin, simultaneously, the molded body is irradiated with UV rays so as to form to a lens shape. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a lenticular lens print and a method for producing the same.
Conventionally, a lenticular lens printed material is known as one that enables three-dimensional stereoscopic viewing. Since such a lenticular lens printed material has a three-dimensional image or a change image formed thereon, it is easy to attract the viewer's attention and has a high advertising effect even when used for a poster or the like. Further, even if it is used in picture books, magazines, packaging cartons, etc., it has high commercial value.
Accordingly, the field of use of the present invention relates to the field of manufacturing, processing, and publishing books, magazines, cards, posters, etc., or the field of packaging and distribution.

The three-dimensional image print is obtained by laminating a three-dimensional image pattern, which is a two-dimensional image formed into a thin line image and arranged in a stripe shape in accordance with the lens pitch of the lenticular lens, on the back surface of the lenticular lens.
In general, in order to obtain a stereoscopic image from a two-dimensional image, at least one set of images for the right eye and the left eye as viewed from a certain position is required. Even with a stereoscopic image print using a lenticular lens, a set of images for the right eye and the left eye A pattern in which the pattern is distributed and arranged so that one pitch of the lens pitch of the lenticular lens is divided into two is used. Further, in order to allow a three-dimensional image to be seen when the position of the viewpoint is moved to the left or right, the picture is further subdivided and images from different viewpoints are arranged in a band shape.

A change image has a case where the image changes continuously and a case where the shape changes to a completely different one. The latter shape change image is an image in which the shape changes to two or more depending on the viewing direction. Similarly, an image subdivided into strips is provided on the lower surface of the lenticular lens plate so as to match the pitch of the lenticular lens. ing. Such a three-dimensional image or a change image is usually manufactured as a viewing medium having a size of about A4 size from a postcard size, or is formed in a relatively small size as a decoration medium. Further, in the case of a large-size advertising print medium such as a poster, it is usually provided in a part thereof.
In these manufacturing processes, in each case, a special lenticular lens plate is aligned and pasted to a stereoscopic image pattern or a change image pattern printed so that its pitch matches the lens pitch in advance. It is included.
As a conventional example of such a lenticular lens plate, one having a lens pitch of 0.6 mm and a total thickness of about 1.4 mm is often used.

  Examples of specific methods for producing lenticular lens prints include a method of printing white ink, yellow, red, indigo and black ink directly on a PET (polyethylene terephthalate) film according to the lenticular lens pitch, and photographic paper on an acrylic injection molded lens. , A method of laminating color films, heat-pressing PET film with a lenticular lens master, creating a lens, and printing paper, film, and ink jet output paper according to the lens pitch, using an adhesive There is a way to match. The common problem is that a lenticular lens plate must be prepared in advance, and there is a problem that the printing loss of the lens plate becomes large until the printing registration is achieved in direct printing. In the bonding method, there is a problem that the work load increases due to the steps of paper, film pre-printing, ink jet output, and film bonding in accordance with the lens pitch by applying an adhesive for bonding.

The three-dimensional image is photographed simultaneously using a large camera in which five to six lenses are horizontally arranged in a range of 1.6 m to 2.0 m. When creating a fine stereoscopic image, 8 to 12 photographs are taken while moving the camera on the rail. When shooting outdoor long-distance scenery, the camera shooting interval is required to be about 2 m or more. There is a problem that a photograph must be taken within a short time before the scenery changes even slightly.
When creating a three-dimensional image, the width of each photograph is compressed and combined into a single image. The compression ratio depends on the number of original photos to be combined. For example, when combining eight original images into one, the horizontal width is compressed to 1/8. Each compressed image is further cut vertically according to the number of lenticular lenses used for the screen. Then, eight thin line images are sequentially arranged on the lower surface of one lenticular lens. Note that compression, cutting, and placement are not performed manually. Compression can be easily adjusted by the lateral feed speed and rotation speed of the scanner. Another method is to use computer software for processing. Cutting and placement are also handled using computers and software.

  The present application relates to a technique for creating a stereoscopic image and a change image in this way, and then aligning and attaching a lenticular lens to a printed material that is offset printed as a printing plate. Unlike the conventional method of adhering a lens plate, there is a feature that a lens resin is printed by silk screen printing on an offset printed material and then molded using a lens matrix.

When the prior literature related to the present application is investigated, Patent Literature 1 to Patent Literature 4 are detected.
Patent Document 1 relates to “three-dimensional / variable printed material”, Patent Document 2 relates to “lenticular printed material”, and Patent Document 3 relates to “three-dimensional or variable printed material”, both of which describe a process of bonding a lenticular lens sheet. Has been.
Patent Document 4 describes “a lenticular processing method for printed matter and a lenticular processed product”, and also describes the use of an ultraviolet curable resin. However, the thickness of the translucent resin for forming the lenticular lens is made uniform. A method of laminating is adopted, which is different from the present application in that respect.

Japanese Patent No. 3123527 JP-A-8-234335 Japanese Patent Laid-Open No. 9-237055 JP 2002-90919 A

The conventional method of laminating lenticular lens plates inevitably invites the manufacturing and cutting of the lens plates, the laminating process, etc., and increases the cost of the printed matter. In particular, the manufacture of lens plates requires special materials and manufacturing equipment, and lens plates suitable for the purpose are generally not readily available or expensive even if they are obtained. In addition, the use of the lenticular lens plate has a restriction on the outer shape of the image, and there is a problem that affects the quality of the stereoscopic image or the change image due to the problem of bonding accuracy.
Therefore, the present invention has been completed by studying the realization of a lenticular lens printed matter having a high-quality stereoscopic image or a change image and the ability to continuously produce the printed matter.

  The first of the gist of the present invention for solving the above problems is a printed matter having a stereoscopic image and / or a change image using a lenticular lens on a part of a printing surface, the lenticular lens being a silk screen printing. A lenticular lens printed matter, which is obtained by molding an ultraviolet curable resin printed by using a transparent lenticular lens matrix and simultaneously curing by ultraviolet irradiation. The lenticular lens printed matter is characterized in that the pitch of the lenticular lens suitable for the above is in the range of 75 μm to 180 μm, and the height from the printing surface to the top of the lenticular lens is in the range of 100 μm to 400 μm.

  The second of the gist of the present invention for solving the above problems is a printed matter having a stereoscopic image and / or a change image using a lenticular lens, wherein the lenticular lens is provided on the substrate surface of the printed matter without using an adhesive. The lenticular lens printed matter is characterized in that the lenticular lens pitch is in the range of 75 μm to 180 μm, and the height from the printing surface to the lens top is 100 μm to 400 μm.

  A third aspect of the present invention is a method for producing a printed matter having a stereoscopic image and / or a change image using a lenticular lens on a part of a printing surface, and (1) a stereoscopic image by offset printing on the printing material surface. And / or a step of printing the change image pattern at a predetermined lens pitch interval, and (2) an ultraviolet curable resin at a predetermined lens pitch by silk screen printing on the stereoscopic image and / or the change image pattern print surface portion. (3) using a transparent lens matrix whose lens pitch matches the pattern for the stereoscopic image or change image, aligning the pitch of the pattern and the lens pitch of the matrix, and using the ultraviolet curable ink A step of molding by pressing from above the resin, (4) a step of curing the resin by irradiating the resin from the upper surface of the lens mold with ultraviolet rays, and (5) the tree. After curing, the method of manufacturing the lenticular lens printed material characterized by having a step, of separating the lens mother die, in.

(1) In the lenticular lens printed matter of the present invention, since the lenticular lens is formed on the three-dimensional image pattern or the change image pattern by silk screen printing and molding of the lens matrix, the lens sheet is made thin and the appearance is made. Can make good prints.
(2) Since the lenticular lens itself can be formed by silk screen printing and a molding process, the design of the lenticular lens and the external shape of the portion where the lens is provided can be made arbitrary.
(3) Silk paper can be printed on a paper on which a pattern for a stereoscopic image or a change image is printed using a special silk screen printer in a continuous process, and a lenticular lens can be formed to produce a printed matter. Accordingly, the alignment accuracy between the printed pattern and the lens is increased, and a high-quality lenticular lens printed matter can be obtained.
(4) Since the manufacturing of the lenticular lens sheet, the cutting of the lens sheet, and the bonding process are not required in a separate process, the work load and loss are reduced, and the manufacturing cost of the printed material can be reduced.
(5) Since the printed material is thinner than the conventional product, the versatility of the printed material is enhanced.
(6) There is an advantage that the printed matter after use can be recovered and used as waste paper and does not deteriorate the environment.

  Hereinafter, the lenticular lens printed matter of the present invention and the manufacturing method thereof will be described with reference to the drawings. FIG. 1 is a diagram showing an example of a lenticular lens printed matter, FIG. 2 is a diagram showing a state in which the lenticular lens printed matter is observed, FIG. 3 is a diagram for explaining a plate making process of a three-dimensional image, and FIG. FIGS. 5A and 5B are diagrams illustrating a hole forming process, and FIGS.

The lenticular lens printed material is used for various applications. For example, as shown in FIG. 1, it can be in the form of a poster 1p. In the case of FIG. 1, the stereoscopic image 2 and the change image 3 are formed in a normal printed picture 4 of the poster 1p.
The normal printed pattern 4 is offset printed together with the stereoscopic image pattern or the changed image pattern, but at least the stereoscopic image or changed image pattern part is preferably finely or highly finely offset printed. In the case of fine printing, the number of screen lines is 400 lines / in. To 500 lines / in. Less than about 500 lines / in. ~ 700 lines / in. It will be about.

  When printing on paper, the length direction of the lenticular lens 5 is preferably formed in a direction perpendicular to the paper flow direction (paper making direction), and the 3D image pattern is also printed so as to match that direction. This is because the width direction perpendicular to the paper flow direction (papermaking direction) is likely to expand and contract due to moisture absorption by offset printing, and the lens pitch and the pattern are difficult to match. In the case of synthetic paper, there is little expansion and contraction. If paper is dry offset, the effect of expansion and contraction can be reduced. Therefore, when a vertical and horizontal lenticular lens is used, it is preferable to use synthetic paper.

The stereoscopic image 2 portion is arranged such that the direction of the lenticular lens has a length direction in a direction perpendicular to a line connecting both eyes when a human observes the printed matter, as indicated by a broken line in the figure.
That is, in the poster 1p in FIG. 1, when the upper side U and the lower side D are hung so as to be vertical, the lenticular lens 5 of the stereoscopic image 2 portion has a length direction in the vertical direction. This is because the stereoscopic image 2 is printed so that it can be viewed stereoscopically by the parallax of both eyes when a human stands up and observes. When observing a printed material on a flat surface, it can be easily inferred that the lenticular lens 5 should have a length direction from the far side of the printed material toward the viewer.

There are cases where the shape, pattern, and color of the change image gradually change depending on the viewing angle, and cases where the image and characters are suddenly switched to images, characters (also referred to as hidden images), and colors. It is considered that the former change image is preferably handled in the same manner as a stereoscopic image.
On the other hand, the latter change image 3 portion is not a stereoscopic view due to the parallax between the left and right eyes, but a printed matter in which different images appear depending on the viewing angles of both eyes. In this case, an image that appears identically for both the left and right eyes at a fixed viewing angle is obtained. The lenticular lens of the latter change image 3 portion is usually arranged to have a length direction in a direction parallel to a line connecting both eyes. That is, when the poster 1p is suspended so that the upper side U and the lower side D are vertical as described above, the lenticular lens of the changed image 3 portion has a length in the horizontal direction.
But it is not restricted to the use which the printed matter 1 hangs vertically, and when it observes in various states, it is not necessary to consider such a condition in particular. When the change image 3 is a horizontal wrench, the viewing angle is limited, so that there are about three changes. However, in the case of a vertical lenticular lens, about six changes are possible in the printed matter of the present invention.

  In FIG. 1, lenticular lenses 5 are vertically arranged in a frame C shown in a substantially circular shape. When observing the poster 1p, if both eyes are placed at the approximate center of the poster 1p, the stereoscopic image 2 of the beer can be seen in the center of the frame C. However, if both eyes are moved left and right, the stereoscopic image 2 is also displayed. Move left and right. The three-dimensional image pattern and the lenticular lens are wide so that the pattern can move. That is, the lenticular lens is provided wider on the left and right than the actual image width of the actual beer can pattern. The frame C is drawn in a circular shape for convenience, but actually has a wide shape on the left and right. The same applies to the change image 3, but in the case of FIG.

  The pitch of the lenticular lens 5 is preferably 75 μm to 180 μm. This is because if it is less than 75 μm, there is a problem that printing and molding become difficult. The amount of ink for printing is adapted to the lens pitch and lens height. For this purpose, the mesh number and thickness of the screen plate, the squeegee pressure, etc. are adjusted. If the pitch is 180 μm or more, it is necessary to increase the lens thickness, which makes printing difficult. In addition, it may be a hindrance when used for paper recycling.

FIG. 2 is a diagram showing a state in which the lenticular lens printed matter is observed, and shows a cross section orthogonal to the length direction of the lenticular lens 5 when the lenticular lens printed matter 1 is formed on the paper 10. The printed material 1 has a stereoscopic image pattern 2G printed on a white paper 10 or the like. The stereoscopic image pattern 2G is printed so as to match the pitch p of the lenticular lens 5. As will be described later, thin line images corresponding to the number of original photographs are arranged on the back of each lenticular lens.
The same applies to the change image, but depending on the viewing angle, a character such as “new sale” can be observed from one viewing angle, and a pattern such as “mark” can be observed from another viewing angle.

As described above, since the printed material of the present invention can be formed by translucent lens resin coating by silk screen printing and molding by a lens matrix after the lenticular lens 5 itself, the outer shape of the portion where the lens is provided, for example, In FIG. 1, it can be made into an arbitrary shape so as to have an external shape of a beer can, and does not require a process such as cutting of a lenticular lens sheet as in the prior art. Moreover, complete spot (partial) processing becomes possible by performing silk screen printing. Furthermore, since such a lenticular lens does not require a bonding process using an adhesive as in the prior art, the transparency of the stereoscopic image can be improved.
The lenticular lens printed matter of the present invention is limited to those produced by such a production process, and does not include printed matter produced by other production methods.

Next, the manufacturing method of a lenticular lens printed matter is demonstrated.
The entire manufacturing process of the lenticular lens printed matter of the present invention includes (1) a three-dimensional image plate-making process,
(2) A three-dimensional image printing step, (3) a lens resin silk screen printing step, and (4) a lens resin molding step using a lens matrix. The same applies to the case of having both a stereoscopic image and a change image, but it is preferable to print the lens resin in this case in two steps. Molding when a large-sized lens matrix cannot be obtained may be performed in two to three steps.

(1) Three-dimensional image plate making process The process of horizontally compressing an original photograph to form a three-dimensional image has been outlined above, but will be described in detail below with reference to the drawings. Here, six photographed photographs are used. Of course, the same subject is photographed by sequentially changing the photographing position.
As shown in FIG. 3, images A, B, C, D, E, and F obtained by horizontally compressing six original photographs to 1/6 are created. The horizontally compressed images A, B, C,... F are arranged in the order of photographing positions. When a color separation / compression image is created by a scanner, analog processing is performed, but digital processing using a computer is also possible.

  Next, each color separation compressed image is cut into thin line images for arrangement on the lower surface of each lenticular lens. For example, when a stereoscopic image uses a lenticular lens with a pitch of 150 μm and creates a picture with a width of 15 cm, the number of lenses is 1000. Therefore, each horizontally compressed image A, B, C,... Is cut into 1000 pieces. For example, the image A is cut into thin line images of A1, A2,..., An (n = 1000) from the left end as shown in FIG. When the width of the original photograph is 15 cm, one thin line image has a width of 25 μm.

  Next, one set of six of A1, B1,..., F1 is combined and placed under the first (leftmost) lenticular lens. One set of A2, B2,..., F2 is arranged below the second lenticular lens. Similarly, one set of An, Bn,..., Fn (n = 1000) is arranged under the nth (n = 1000) th (rightmost) lenticular lens. Since one set is 150 μm wide, 1000 sets are 150 mm wide. These processes are performed by digital processing (particularly, cropping and pressing) using a computer.

The stereoscopic image 2R thus combined and rearranged is changed to 400 lines / in. ~ 700 lines / in. To positive (cyan, magenta, yellow, black). Alternatively, offset printing is performed by directly making a plate on a printing plate.
After the lenticular lens 5 is attached to the stereoscopic image print 2G, the state is as shown in FIG. In this state, when viewed from the right side with the eyes of the human M, the right stereoscopic image under the lens is easy to see, and when viewed from the left side, the left stereoscopic image under the lens is easy to see.

Conventionally, there is a patent specification in which a pair of right-eye originals and left-eye originals are arranged under one lenticular lens. Is used as described above.
If you want to see a 3D image that turns around when you move the viewpoint to the left or right, increase the number of photos (8 to 12), and further cut each of the horizontally compressed images. Thus, it is necessary to arrange the patterns from different viewpoints as thin lines.

(2) Three-dimensional image printing step The three-dimensional image pattern is preferably printed by fine or high-definition offset printing. In normal offset printing, the density gradation expression of an image is expressed by the size of a halftone dot, but in a stereoscopic image printed matter, moire is likely to occur due to the halftone dot. That is, halftone dots are regularly arranged with a constant dot-to-dot interval, and moire tends to occur when a plurality of halftone dots are overlapped due to the regularity of the arrangement. Therefore, even in normal color printing, a color original is color-separated into color-separated plates, and then each color-separated plate is half-tone-divided into halftone dot images with halftone dot sizes. The occurrence of moire is minimized by shifting the angle of the mesh screen for each color.

However, in stereoscopic image printing using a lenticular lens, lenses with a cross-sectionally cross-section are two-dimensionally arranged at a constant pitch, so that there is a problem that moire is more likely to occur and the mesh screen angle is more difficult to set. .
In stereoscopic image printing, it is necessary to compress an image having a plurality of parallaxes into a single image size, and even if a mesh screen having the same number of lines as a normal printed material is used, the resolution of the stereoscopic image printed material is low. It will fall. Therefore, the stereoscopic image portion is 400 lines / in. To 700 lines / in. It is preferable to print using the number of screen lines.

Each printing paper (in the case of a sheet) is provided with pin holes for positioning with silk screen printing or lens molds at the holding portion of the printing paper or at two points on the left and right. FIG. 4 is a diagram showing pin holes of such printing paper. In the case of FIG. 4, two pin holes, p1 and p2, are formed in the holding portion. However, when a plurality of lens mother dies are used, four or six pin holes may be formed.
The position may be on both sides of the paper without being limited to the holding portion. Reference numeral 2 indicates a stereoscopic image, and reference numeral 3 indicates a change image.

(3) Silk screen printing process of lens resin a. Screen printing plate preparation The screen printing plate uses a screen fabric coated with photosensitive material. The screen fabric for lens resin printing plates has a mesh count of 300 lines / in. To 450 lines / in. Use something of a degree. As the screen material, polyester, nylon, stainless steel, or steel material is usually used, but any material may be used. On this dough, a positive film having a line-and-space pattern is brought into close contact and exposed, and then developed to obtain a screen printing plate having a predetermined opening width at a predetermined pitch.
Either one of the vertical and horizontal meshes of the screen fabric is aligned with the length direction of the lenticular lens.

b. Printing of lens resin UV-curable translucent resin ink is used for silk screen printing of lens resin. This is for curing in a short time after printing. Since a light-transmitting material is desired, a colorless and transparent material that does not contain a colorant is preferable even if it is an ink.
In printing the lenticular lens resin, the plate is attached so that the squeegee runs in the length direction of the lenticular lens of the screen plate. When the stereoscopic image and the lenticular lens for change image are orthogonal to each other, it is preferable to print in two steps. However, since the molding is performed by the mother die, the shape is not damaged much even in simultaneous printing.

  Special attention should be paid to the printing of the lenticular lens resin and the lens molding so that the printing position of the three-dimensional pattern 2G and the position of the lenticular lens (position accuracy in the direction orthogonal to the lens) are exactly matched. Since the lens itself has a pitch of 75 μm to 180 μm, it is necessary to match the positional accuracy with the 3D pattern with an error accuracy of 0.1 μm or less, and when a larger error occurs, the 3D reproducibility is reduced. For this reason, it is necessary to perform highly accurate alignment by fitting the pin holes of the printed material and the pins provided on the screen frame, not just alignment by a detector.

  After printing, since the lens resin on the printing surface is soft and flows somewhat, the gap between the lenses is narrowed or contacted to close the gap. Some gaps may remain. However, if the viscosity of the ink is too small, a flat lens surface is obtained, and it is necessary to adjust the ink viscosity to be maintained. The lens width on the screen surface of silk screen printing is adjusted to be equal to the volume when ink is formed into a lens shape. That is, the cross-sectional area immediately after printing and the cross-sectional area after lens molding are made substantially equal.

(4) Molding process of lens resin using lens mold FIG. 5 is a diagram for explaining a molding process using a lens mold.
Since the lens resin 5a after removing the screen plate 6 has fluidity, it flows somewhat and the cross-sectional rectangular shape has a gently curved shape at the top, but it does not have the designed perfect lens shape (FIG. 5 ( A)). Therefore, optically designed on the surface of the translucent lens resin 5a, pressing a transparent lenticular lens master block 7 with engraved lens grooves, forming a lens shape and simultaneously irradiating a UV lamp (ultraviolet light source) 8 The lens resin is cured (FIG. 5B). The lens matrix 7 is a 24-degree angle lens matrix designed to make it easy to see an object positioned at an angle of 24 degrees with respect to the distance between human eyes (about 65 mm). If the lens matrix 7 is peeled off after UV irradiation, the lenticular lens printed matter 1 having a molded lens surface is completed (FIG. 5C).

Molding with the lens matrix 7 also requires highly accurate alignment. On the contrary, higher accuracy is required for the positional accuracy of the lens matrix than for printing of the lens resin 5a. This is because the final lens position is determined by the lens matrix. This alignment is also performed by fitting a pin hole of the printed material and a pin provided on the lens mold mounting jig frame. However, accuracy is not required for alignment of the lenticular lens in the length direction. This is because the length direction of the matrix lens is usually formed with a margin longer than the pattern.
Since the resin is in an uncured state after the lens resin is printed and before being molded by the lens matrix, it is necessary to carry out the process in a continuous line. As a result, the influence of expansion and contraction of the printing paper can be minimized.

When the printed material is a large size, it is difficult to obtain a large size mother die 7, and the lens mother die 7 can be divided and molded. For example, when making all the B posters, it is possible to form the poster by moving the master block of the fourty-six half-pitch and pushing it three times. In this case, it is possible to mold by forming 6 pin holes for positioning in the holding portions of all the B posters and moving the pins of the lens matrix. In particular, when the vertical wrench and horizontal wrench are separated from each other, it is necessary to press twice.
Since the lens mother mold may be clogged while it is repeatedly molded, one or more preliminary molds of the same mold are continuously provided in the traveling direction of the printed matter, and the other mold is used as a solvent while using another mold. To wash with.

The pitch of the lenticular lens is in the range of 75 μm to 180 μm. More preferably, it is 80 micrometers-160 micrometers. This is because the objective is a thin high-definition lens. Further, the height h (see FIG. 2) from the printing surface to the top of the lens is about 100 μm to 400 μm. This is because the height corresponds to the lens pitch. Moreover, the thickness of the valley part which connects between lenses shall be about 3 micrometers-150 micrometers according to a lens pitch or a lens height.
The relationship between the lens pitch p and the height h is related to the shape of the lens and the refractive index of the resin and is not fixed, but it has been confirmed that a good result can be usually obtained within the above range.

<About embodiment of used material>
(1) Printing base material As the printing base material, various papers that are used for normal publication printing and advertisements and have excellent surface properties are used. For example, it is mirror-coated paper, coated paper, art paper, high-quality paper, etc., but it may be carton paper or paperboard used for packaging materials. Synthetic paper (trade names such as “YUPO (trademark)” and “Peachcoat (trademark)”) is also preferable from the viewpoint of less expansion and contraction.
As the transparent plastic sheet material, polyvinyl chloride, polypropylene, polyethylene terephthalate (PET), polycarbonate, polystyrene, acrylic, or the like can be used.

(2) Lens Resin The lens resin is a resin that is cured by radical polymerization upon irradiation with actinic rays such as ultraviolet rays. The radically polymerizable curable resin generally contains a photopolymerizable prepolymer as a basic component and optionally contains a photopolymerizable monomer, a photopolymerizable initiator, and other additives. Examples of the photopolymerizable prepolymer include polyester acrylate, epoxy acrylate, urethane acrylate, polyol acrylate, and the like.
A translucent ultraviolet curable resin that is in an uncured state and in a liquid or soft state can be used. If it is translucent, it may be colored, but if it is colorless and transparent, it is preferable for observation of a three-dimensional pattern.

(3) Lenticular lens mold A mold that is a transparent material and excellent in ultraviolet transparency can be used. It can be used by engraving, cutting and polishing plate materials such as glass, polypropylene, polycarbonate and acrylic. In this example, the polypropylene resin plate was excellent in the release property of the resin and was a good result. A matrix material having a thickness of about 0.5 mm to 1.0 mm can be used. It can be backed up with a glass plate incorporating an ultraviolet light source.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1, 3, 4, 5, etc., and the same reference numerals are given to the reference numerals corresponding to the respective drawings.

<Platemaking / printing of stereoscopic and change images>
For a stereoscopic image, six original documents (photos) were taken, converted into a 1/6 long picture, and then cut into a 25 μm wide thin line image so that it could be placed under a lenticular lens with a pitch width of 150 μm. The cut out thin line images were arranged and arranged in order of 6 patterns so as to be the pattern size of the original document (width 150 mm) (see the process in FIG. 3).
Similarly, a change image in which the characters “new release” and “mark” are changed three times was prepared.
Note that a color separation scanner was used for conversion to a long pattern, and a computer and image processing software were used for image clipping and rearrangement.

  An original plate in which the stereoscopic image 2 and the change image 3 are combined with a normal printed pattern 4 is 700 lines / in. CTP (computer type plating). A high-definition offset printing was performed using a sheet-fed offset printing press. The application is a hanging advertisement poster 1p. In addition, 46-mm / 135 kg of art paper was used as printing paper, and sheet-fed ink for offset printing [“Across” manufactured by The Inktec Co., Ltd.] was used as printing ink. Also, detection marks were detected during printing, and pin holes p1 and p2 for alignment were provided in the holding portions of each printing paper by an automatic punch machine (see FIG. 4).

<Lens resin printing and lens molding>
As a positive film for a lenticular lens, a stripe pattern composed of line-and-space was used. The width of the light shielding part was 85 μm, the width of the transparent part was 65 μm, and the repetition pitch p was 150 μm.
A photosensitive screen fabric (steel mesh, thickness: 400 μm) having a mesh number of 60 / inch was used as the screen plate for lenticular lens resin printing.

Next, on the pattern for the stereoscopic image 2 and the change image 3, the height h is 260 μm to the lens resin with a screen ink made of a transparent photocurable acrylic monomer (molecular weight 800) using the above printing screen plate. It printed so that it might be set to about 280 micrometers (refer FIG. 5 (A)).
Thereafter, using a lenticular lens lens mold made of a polypropylene plate having a lens pitch of 150 μm and a lens top height h of 250 μm and having a 24-degree angle lens, it was pressed from the lens resin surface and molded. At the same time, ultraviolet rays were irradiated from a UV lamp (mercury lamp) 8 to cure the lens resin 5a (see FIG. 5B). The lens matrix 7 was peeled off to complete a lenticular lens print 1p as shown in FIG. As a result, the lens pitch was 150 μm, the lens top height h was 250 μm, and the valley thickness was 10 μm.
In addition, at the time of lens resin printing and molding by the lens mother mold, the pins provided on the respective molds and the pin holes of the printed material are fitted and aligned.

<Platemaking / printing of stereoscopic and change images>
For 3D images, take 8 original documents (photos), convert them to 1/8 long picture, and then cut into 22.5μm wide thin line images so that they can be placed under a lenticular lens with a pitch width of 180μm did. The cut out thin line images were arranged and arranged in order of 8 pictures so that the picture dimensions (360 mm in width) of the original document were obtained (see the process in FIG. 3).
Similarly, a change image in which the characters “new release” and “mark” are changed three times was prepared.

  Polystyrene-based synthetic paper [“Peach Coat WG-220” (180 kg / 46 size) manufactured by Nisshinbo Industries, Inc.]] is used as the printing material, and UV curable offset sheet-fed ink [The Inktec Co., Ltd. is used as the printing ink. Except for using the “UV card” manufactured by the company, offset printing under the same conditions as in Example 1 was performed, as shown in FIG. 1, a normal print pattern 4, a stereoscopic image 2 incorporated in the pattern, and a change image 3. A poster 1p for outdoor advertising having

<Lens resin printing and lens molding>
As a positive film for a lenticular lens, a stripe pattern composed of line-and-space was used. The width of the light shielding portion was 100 μm, the width of the transparent portion was 80 μm, and the repetition pitch p was 180 μm.
The screen plate for lenticular lens resin printing has a mesh number of 60 / inch. No. photosensitive screen fabric (steel mesh, thickness: 400 μm) was used. The squeegee pressure was set higher than that in Example 1 in order to increase the amount of printing during printing.

The lenticular lens resin printing screen plate used was the one made as described above, and the lens matrix was the same as in Example 1, but the one with a pitch of 180 μm and a lens top height h of 400 μm was used.
Using a transparent polyester resin UV curable silk screen ink (“4100RLB” manufactured by Jujo Chemical Co., Ltd.) as the lens resin, and using the above printing screen plate on the 3D image 2 and the change image 3 pattern The printing was performed so that the lens resin height h was about 410 μm to 430 μm (see FIG. 5A). Thereafter, the lens resin 5a was molded and cured in the same manner as in Example 1 (see FIG. 5B). The height h of the lens top after molding was 400 μm, the lens pitch p was 180 μm, and the thickness of the valley was 30 μm.

The lenticular lens printed material 1p of Example 1 was a printed material suitable for hanging advertisement because the stereoscopic image 2 and the change image 3 could be clearly observed.
The lenticular lens printed material 1p of Example 2 was a printed material suitable for outdoor advertising posters because the stereoscopic image 2 and the change image 3 could be clearly observed.

  In the above description, printed materials for display such as posters are mainly described, but spread pages and covers of various printed publications, covers, cover covers, calendars, cooking menus, insert advertisements, flyers, cards, record jackets, albums It can also be suitably used as a printed matter of a kind, a packaging paper carton, or a plastic packaging material, and these uses are not excluded from the scope of application of the present invention.

It is a figure which shows the example of a lenticular lens printed matter. It is a figure which shows the state which observes a lenticular lens printed matter. It is a figure explaining the plate-making process of a stereo image. It is a figure which shows the pin hole of printing paper. It is a figure explaining the molding process in a lens mother mold.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Printed matter 1p Poster 2 Three-dimensional image 3 Changed image 4 Normal printing pattern 5 Lenticular lens 5a Lens resin 6 Screen plate 7 Lens matrix 8 UV lamp 10 Base material, paper

Claims (7)

A printed material having a three-dimensional image and / or a change image using a lenticular lens on a part of the printing surface, the lenticular lens using a transparent lenticular lens matrix made of an ultraviolet curable resin printed by silk screen printing The lenticular lens printed material is characterized in that the pitch of the lenticular lens conforming to the amount of silk screen printing is in the range of 75 μm to 180 μm. The lenticular lens printed matter is characterized in that the height from the printing surface to the top of the lenticular lens is in the range of 100 μm to 400 μm. The lenticular lens printed matter according to claim 1, wherein when the print surface has a stereoscopic image and a change image, the directions of the lenticular lenses of the stereo image and the change image are orthogonal to each other. The lenticular lens for stereoscopic images has a length direction perpendicular to the line connecting both eyes when a human observes the printed material, and the lenticular lens for change images is parallel to the line connecting both eyes The lenticular lens printed matter according to claim 2, wherein the lenticular lens printed matter has a length direction. A printed matter having a stereoscopic image and / or a change image using a lenticular lens, wherein the lenticular lens is formed on the substrate surface of the printed matter without using an adhesive, and the pitch of the lenticular lens is 75 μm to 180 μm. A lenticular lens printed matter having a range of 100 μm to 400 μm in height from the printing surface to the lens top. The stereoscopic image of the lower surface of the lenticular lens is 400 lines / in. To 700 lines / in. The lenticular lens printed matter according to claim 1, wherein the lenticular lens printed matter is printed by offset printing. A method for producing a printed matter having a stereoscopic image and / or a change image using a lenticular lens on a part of a print surface, wherein (1) a pattern for a stereo image and / or a change image is predetermined by offset printing on the print material surface Printing at a lens pitch interval of
(2) A step of printing an ultraviolet curable resin at a predetermined lens pitch by silk screen printing on the stereoscopic image and / or change image pattern printing surface portion, and (3) the stereoscopic image or change image pattern and lens pitch. (4) a step of molding by pressing the resin with the ultraviolet curable ink by aligning the pitch of the pattern and the lens pitch of the mother die, and using a transparent lens mother die that matches A method of producing a lenticular lens printed matter, comprising: a step of curing the lens base by irradiating with ultraviolet rays from the upper surface of the lens base; and (5) a step of peeling the lens base after the resin is cured. The method for producing a lenticular lens printed matter according to claim 6, wherein the lens matrix is formed by engraving lens grooves on a transparent polypropylene resin plate.