JP2010044213A - Lenticular printed material and method for manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive and fast high-quality thin lenticular printed material having a high-definition pitch and no misalignment between an image and a lens. <P>SOLUTION: The lenticular printed material 1 is prepared by printing a lenticular image 13 on a sheet type substrate 11, in which an image 131 for a left eye to be viewed by a left eye and an image 132 for a right eye to be viewed by a right eye are each divided into strip-like pieces with a predetermined width and arranged in an interlaced pattern, and then forming lenticular lenses 15 by relief printing such as flexographic printing on the lenticular image 13. The lenticular lenses 15 preferably have a pitch of 0.1 to 0.4 mm and an average film thickness of 8 to 25 μm. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lenticular type printed matter and a manufacturing method thereof.

  In recent years, printed materials (lenticular type printed materials) have been developed in which the pattern changes depending on the viewing angle or a three-dimensional effect can be obtained. This printed matter is formed by arranging a transparent plastic sheet (lenticular lens) on which an infinite number of fine elongated rod-shaped lenses are arranged on an image called a lenticular image. Here, the lenticular image is an image obtained by cutting two or more images into long and narrow strips, and arranging the strip-shaped images in order in an interlaced manner to form a single image. Conventionally, a lenticular type printed matter has been produced by pasting a lenticular lens together with a lenticular image or printing a lenticular image directly on the back of the lenticular lens. However, there has been a problem that when the positions of the lenticular image and the lenticular lens are shifted during pasting or printing, the image cannot be clearly viewed. Further, since this lenticular lens is a plastic sheet, the flexibility of the printed matter itself is impaired, and the thickness of the printed matter itself increases and the weight increases. Moreover, since the lenticular lens itself is expensive, there is a problem that the manufacturing cost of the printed matter increases.

In order to solve such a problem, a method of directly forming a lenticular lens on a lenticular lens image using various printing methods has been proposed. For example, a transparent lower layer resin portion is formed on the surface of the lenticular image, and a lens forming marking line is printed on the surface of the lower layer resin portion according to the lenticular image, and a transparent lens that is not compatible with the marking line printing ink. A method of forming a lenticular lens by applying a forming resin to the surface of the lower layer resin portion and utilizing the repelling due to the incompatibility between the marking line printing ink and the lens forming resin and the surface tension of the lens forming resin (patent) Document 1) or a method of forming a lenticular lens by screen printing the lens forming ink on the lenticular image in accordance with the lenticular image and utilizing the surface tension and gravity of each ink row (see Patent Document 2). ) Etc. are known.
JP-A-5-303153 JP 2000-155380 A

  However, according to the method of Patent Document 1, the printing process of the marking line printing ink is required in addition to the lens forming resin coating process, so that the manufacturing process becomes complicated, and the obtained printed matter is the lower layer resin. However, there is still a problem that it is difficult to apply to printed matter such as books and magazines.

  In addition, according to the method of Patent Document 2, since the lenticular lens is formed by screen printing, there is a limit in accuracy and printing speed, and it is difficult to provide a high-quality lenticular type printed matter at high speed and at low cost.

  The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to provide a high-quality lenticular type printed matter at high speed and at low cost.

  Another object of the present invention is to provide a thin lenticular type print that can be applied to thin paper prints such as books and magazines.

  The above object of the present invention is achieved by the following means.

(1) That is, the present invention is a lenticular type printed matter in which a lenticular lens is formed by letterpress printing on the lenticular image of a substrate on which a lenticular image is printed.

(2) The present invention is the lenticular print according to (1), wherein the relief printing is resin relief printing, flexographic printing, or metal relief printing.

(3) Moreover, this invention is a lenticular type printed matter as described in (1) or (2) whose pitch of the said lenticular lens is 0.1-0.4 mm.

(4) Moreover, this invention is a lenticular type | mold printed matter of any one of (1)-(3) whose average film thickness of the said lenticular lens is 8-25 micrometers.

(5) Further, the present invention provides the lenticular type printed matter according to any one of (1) to (4), wherein the lenticular lens is formed in-line.

(6) Moreover, this invention has a printing process which prints a lenticular image on a base material, and a lens formation process which forms a lenticular lens by letterpress printing on the said lenticular image, The lenticular type | mold characterized by the above-mentioned It is a manufacturing method of printed matter.

(7) The present invention is the method for producing a lenticular print according to (6), wherein the relief printing is resin relief printing, flexographic printing, or metal relief printing.

(8) Moreover, this invention is a manufacturing method of the lenticular type printed matter as described in (6) or (7) whose pitch of the said lenticular lens is 0.1-0.4 mm.

(9) Moreover, this invention is a manufacturing method of the lenticular type | mold print in any one of (6)-(8) whose average film thickness of the said lenticular lens is 8-25 micrometers.

(10) Furthermore, the present invention is the method for producing a lenticular type printed matter according to any one of (6) to (9), wherein the printing step and the lens forming step are performed in-line. .

  According to the lenticular type printed matter and the manufacturing method thereof of the present invention, a lenticular lens is formed by a relief printing method on the lenticular image of the substrate on which the lenticular image is printed. Compared to the conventional method of forming a lenticular lens due to the incompatibility of the ink, the marking line printing ink printing process is not required, and the manufacturing process can be reduced by simplifying the process, and the printed material does not require a lower layer resin part. Therefore, it is possible to manufacture a thin lenticular type print that can be applied to a print such as a book or a magazine. In addition, since the accuracy and printing speed can be improved compared to the conventional method of forming a lenticular lens by screen printing, a high-quality lenticular type printed matter that can cope with a finer pitch and has no displacement between the image and the lens can be obtained at high speed. It can be manufactured at low cost.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the present embodiment, a pseudo three-dimensional image printed material that allows a printed image to be viewed three-dimensionally will be described as an example of the lenticular type printed material.

  FIG. 1 is a diagram schematically illustrating a configuration of a printed material 1 according to the present embodiment, and FIG. 2 is a conceptual diagram for explaining a mechanism of pseudo-stereoscopic vision using a lenticular technique.

  As shown in FIG. 1, the printed material 1 has a lenticular image 13 printed on a substrate 11 and then a lenticular lens 15 formed on the lenticular image 13. The substrate 11 only needs to be capable of printing the lenticular image 13, and particularly preferably has a sheet shape that allows easy printing of the lenticular image 13. Specific examples include synthetic resin sheets such as PVC (polyvinyl chloride), PP (polypropylene), and PET (polyethylene terephthalate) in addition to paper and aluminum vapor-deposited paper.

As shown in FIG. 2, the lenticular image 13 includes a left-eye image 131 to be shown to the left eye and a right-eye image 132 to be shown to the right eye, each having a strip-like section (L ₁ , L ₂ having a predetermined width). , L ₃ ... And R ₁ , R ₂ , R ₃ ..., And arranged in an interlaced manner (L ₁ , R ₁ , L ₂ , R ₂ , L ₃ , R ₃ ...) It is a single image. The left-eye image 131 and the right-eye image 132 are created using lenticular image creation software. A specific example of this software is “Super Flip! 3D Genius ”,“ Power Illusion ”and the like. When it is desired to produce a printed matter that can be visually recognized dynamically, a lenticular image is created using a plurality of moving image images.

  As shown in FIG. 1, the lenticular lens 15 has a predetermined film thickness in which a plurality of hook-shaped convex portions are arranged in parallel. The film thickness of the lenticular lens 15 is preferably 8 to 25 μm, and particularly preferably 12 to 20 μm. If the film thickness of the lenticular lens 15 falls below the lower limit of this range, the lens effect may not be expected, which is not preferable. Further, if the value exceeds the upper limit, it is not preferable because it is difficult to apply to printed matter such as books and magazines.

  Further, the printed matter 1 according to the present embodiment is characterized in that the distance (pitch) between the vertices of the convex portions in the lenticular lens 15 is freely designed according to the use of the printed matter 1. In general, in a conventional lenticular lens, three types of 75-line lens, 100-line lens, and 120-line lens are well known. For example, a 100-line lens has 100 scanning lines per inch (25.4 mm) and has a pitch of 0.254 mm. The greater the number of scanning lines, the smaller the pitch, and a clear image can be expressed. The pitch in the present invention is preferably 0.1 to 0.4 mm, particularly preferably 0.15 to 0.3 mm. If these pitches are out of this range, the accuracy and printing speed are limited, and it is difficult to provide a high-quality lenticular type printed material at high speed and at low cost.

  The width of the strip-shaped section of the lenticular image 13 is determined according to the width of the lenticular lens 15. For example, as in the present invention, when the lenticular image 13 is created using two types of pseudo-stereoscopic images, that is, the left-eye image 131 and the right-eye image 132, Each width is half of the width of the lenticular lens 15. When n images are used to represent a pseudo variable image or a pseudo moving image, which will be described later, the width of the strip-shaped section of each image is 1 / n of the width of the lenticular lens 15.

  Next, a printing machine for printing a printed material according to the present embodiment will be described.

  FIG. 3 is a diagram schematically showing a printing machine 2 for producing the printed matter 1 according to the present embodiment. As shown in FIG. 3, the printing machine 2 is a printing machine with 6 colors + varnish coater (“Speedmaster SM 74” manufactured by Heidelberg), and offset printing apparatuses U1 to U4 are sequentially arranged, followed by flexographic printing. Device U5, drying device D2, and paper discharge device D3 are sequentially arranged. By arranging each device in this way, each device can perform a predetermined process on the printed matter 1 conveyed through each device. However, the printing press 2 may be configured to include devices for performing various pre-processing and post-processing in addition to the above devices.

  The offset printing apparatuses U <b> 1 to U <b> 4 perform offset printing of the lenticular image 13 on the base material 11 using oil-based offset ink or ultraviolet curable offset ink, respectively. In each apparatus, different color inks are used. The offset printing apparatus U1 uses black, the offset printing apparatus U2 uses cyan, the offset printing apparatus U3 uses magenta, and the offset printing apparatus U4 uses yellow ink. Printing is in progress. However, the arrangement order of the devices may be changed according to the situation. In the present invention, “UV HY-BD HS-2” (manufactured by T & K) or the like is suitably used as the oil-based offset ink, and “TK High Unity Neo” (manufactured by Toyo Ink) or the like is suitably used as the ultraviolet curable offset ink. Used.

  In the present invention, it is only necessary that the lenticular image 13 can be printed on the base material 11, and other printing methods may be used depending on the base material 11. For example, letterpress printing such as resin letterpress printing, flexographic printing, metal letterpress, etc., dry offset printing, pad printing (octopus printing), lithographic printing (lithograph, lithography) and other lithographic printing, engraving intaglio printing, gravure Intaglio printing such as printing, stencil printing such as silk screen printing, and copying (gully printing) printing can be used. When other printing methods are used, ink corresponding to each method is used.

  The flexographic printing apparatus U5 is for forming a lenticular lens 15 on the lenticular image 13 using an aqueous flexographic ink or an ultraviolet curable flexographic ink. Examples of the aqueous flexographic ink include aqueous coating varnish, and examples of the ultraviolet curable flexographic ink include UV coating varnish. In the present invention, “Aqua Pack Varnish F-6” (manufactured by T & K), “FD Clear Coat Varnish TG” (manufactured by Toyo Ink) and the like are preferably used. Applying the flexographic printing method to form the lenticular lens 15 eliminates the need to form a lens using two types of ink as in the prior art, thus reducing manufacturing costs and further work. Time can be shortened.

  The drying device D2 is an ultraviolet curable drying type dryer, and is used for curing and fixing the oil-based offset ink, the ultraviolet curable offset ink, and the ultraviolet curable flexo ink described above. Therefore, the drying device D2 only needs to have a light source that irradiates ultraviolet rays in a region where resins contained in the used ink or coating agent react with each other to be crosslinked and cured. When ink that is not ultraviolet curable is used, a known drying method, for example, a method using heating wire, infrared rays, far infrared rays, microwaves, electromagnetic induction, or the like can also be used.

  The paper discharge device D3 is for discharging the produced printed matter 1 to the outside of the device. The printed matter 1 is transported on an air cushion that is ejected from a venturi nozzle incorporated in the paper guide plate.

  In the present invention, the printed material 1 is manufactured using the inline-type printing machine 2, but the printed material 1 may be manufactured off-line.

  Next, the printing method according to the present embodiment will be described.

  FIG. 4 is a cross-sectional view showing a state in which the lenticular image 13 is printed on the substrate 11 in the printing method of the present embodiment, and FIG. 5 is an ultraviolet curable flexographic ink on the lenticular image 13 using the relief plate 3. FIG. 6 is a cross-sectional view showing a state immediately before printing 4.

  First, the lenticular image 13 is created using the above-described lenticular image creation software. Next, as shown in FIG. 4, the lenticular image 13 is offset printed on the substrate 11 using the offset printing apparatuses U <b> 1 to U <b> 4 of the printing machine 2 described above. Note that the lenticular image 13 may be printed over the entire printing surface of the base material 11. For example, when it is desired to make only a headline such as a magazine or a photograph part of a talent a special appearance, the base material 11. It may be printed only on a part of the printing surface. Thus, the printing range of the lenticular image 13 can be appropriately designed according to the use of the printed matter 1 or the like.

  Next, as shown in FIG. 5, the lenticular lens 15 is formed on the lenticular image 13 using the flexographic printing apparatus U <b> 5 of the printing machine 2 described above. At this time, the ultraviolet curable flexographic ink 4 is injected into the concave portion of the relief plate 3, and the ultraviolet curable flexographic ink 4 is pressed so as to cover the left eye image 131 and the right eye image 132. Then, before these inks are dried, the drying device D2 is used to irradiate ultraviolet rays having a predetermined wavelength to cure the ultraviolet curable offset ink on each image line and the ultraviolet curable coating agent between the image lines. The lenticular lens 15 is formed by fixing. Finally, using the paper discharge device D3, the produced printed matter 1 is discharged to the outside of the device.

  In the printed matter 1 produced in this way, as shown in FIG. 2, the left-eye image 131 and the right-eye image 132 that are in a parallax image relationship are arranged in one lenticular lens 15. Since the left eye image and the right eye image appear in the left eye and the brain detects the shift of the parallax image entered from the left and right eyes, the lenticular image 13 is simulated in a stereoscopic image. Can be recognized. In the lenticular type printed matter of the present invention, in addition to the pseudo three-dimensional printed matter, a plurality of different images are divided into strips and arranged in an interlaced manner, thereby making the lenticular image 13 a pseudo variable image (viewing angle). It can be used as a pseudo variable image printed matter or a pseudo moving image printed matter that can be recognized as a moving image (with an animation effect). Furthermore, it may be a printed matter in which a plurality of these pseudo stereoscopic images, pseudo variable images, or pseudo moving images are combined.

  It should be noted that the printed matter and the printing method of the present invention are not limited to the above-described embodiments, and it is needless to say that various changes can be made without departing from the gist of the present invention.

  As described above, according to the lenticular type printed matter and the method for producing the same of the present invention, a high-quality thin lenticular type printed matter having a high-definition pitch and no image and lens displacement can be produced at high speed and at low cost. Accordingly, the lenticular type printed matter of the present invention includes a business card, a newspaper magazine, a book, a calendar, a poster, a pamphlet, a flyer, a photograph, a beverage can, etc. It is extremely useful when used in metal, clear files, transparent cosmetic boxes, etc.

It is the figure which showed typically the structure of the printed matter 1 concerning this embodiment. FIG. 2 is a conceptual diagram for explaining the mechanism of pseudo-stereoscopic vision using the lenticular technique. It is the figure which showed typically the printing machine 2 for producing the printed matter 1 concerning this embodiment. In the printing method of this embodiment, it is sectional drawing which shows the state which printed the lenticular image 13 on the base material 11. FIG. It is sectional drawing which showed the state just before printing the ultraviolet curing type flexo ink 4 on the lenticular image 13 using the relief plate 3. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Printed material 11 ... Base material 13 ... Lenticular image 131 ... Image for left eye 132 ... Image for right eye 15 ... Lenticular lens 2 ... Printing machine U1-U4 ... -Offset printing device U5 ... Flexographic printing device D2 ... Drying device D3 ... Discharge device 3 ... Letterpress 4 ... UV curable flexographic ink

Claims (10)

  A lenticular type printed matter, wherein a lenticular lens is formed by letterpress printing on the lenticular image of a substrate on which a lenticular image is printed.   The lenticular printing according to claim 1, wherein the relief printing is resin relief printing, flexographic printing, or metal relief printing.   The lenticular type printed matter according to claim 1 or 2, wherein a pitch of the lenticular lens is 0.1 to 0.4 mm.   The lenticular type printed matter according to any one of claims 1 to 3, wherein an average film thickness of the lenticular lens is 8 to 25 µm.   The lenticular type printed matter according to any one of claims 1 to 4, wherein the lenticular lens is formed in-line. A printing process for printing a lenticular image on a substrate;
A lens forming step of forming a lenticular lens by letterpress printing on the lenticular image;
A method for producing a lenticular type printed matter, comprising:   The method for producing a lenticular print according to claim 6, wherein the relief printing is resin relief printing, flexographic printing, or metal relief printing.   The manufacturing method of the lenticular type printed matter of Claim 6 or 7 whose pitch of the said lenticular lens is 0.1-0.4 mm.   The manufacturing method of the lenticular type printed matter of any one of Claims 6-8 whose average film thickness of the said lenticular lens is 8-25 micrometers.   The method for producing a lenticular print according to any one of claims 6 to 9, wherein the printing step and the lens forming step are performed in-line.

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