JP2008040126A - Lenticular lens sheet and printing medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lenticular lens sheet capable of easily forming an expressive, interesting stereoscopic image, and to provide a printing medium capable of being sent to others by forming a post card using such an image. <P>SOLUTION: The lenticular lens sheet is for appreciating a parallax image. The lenticular lens sheet has a plurality of sections, into which the lenticular lens sheet is sectioned. The plurality of sections are being such that a large number of narrow unit lenses of a particular shape are arranged on the surfaces of the corresponding sections. The lengthwise directions of the unit lenses arranged in at least two of the plurality sections are different. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a lenticular lens sheet whose surface is formed in a predetermined lens shape, and a print medium having the lenticular lens sheet.

  One technique for printing a three-dimensional image that makes a printed image appear three-dimensionally or gives a motion to the three-dimensional image is a method using a lenticular lens in which a large number of cylindrical convex lenses are arranged in parallel. In the method using a lenticular lens, a right-eye image and a left-eye image, that is, a parallax image are arranged at positions corresponding to each of a plurality of convex lenses, and a stereoscopic image is obtained by viewing the arranged parallax images. It is like that. In recent years, due to the cost reduction of such lenticular lenses and the spread of printers, it has been desired to print interesting three-dimensional images and send them as postcards to others.

  In Patent Document 1, by printing a parallax image corresponding to a plurality of types of lenticular lenses using a dedicated offset printing machine, an interesting three-dimensional image having expressive power utilizing the effects of the plurality of types of lenticular lenses is printed. Techniques to do this are disclosed.

  In addition, a technique for bonding a lenticular lens and a print medium on which a parallax image is printed is disclosed (for example, Patent Document 2). According to the technique of Patent Document 1, a postal address is printed on the front side of a postcard, a parallax image is printed on the back side, and a sheet on which a lenticular lens is formed (hereinafter referred to as a lenticular lens sheet) and this postcard are pasted. By combining them, a three-dimensional image can be sent as a postcard.

JP 2006-1153 A JP 2001-42462 A

  However, since the technique of Patent Document 1 requires a dedicated offset printing machine, there is a problem that it is difficult to print a stereoscopic image easily. Further, the technique of Patent Document 2 has a problem that it is difficult to align the position of each convex lens in the lenticular lens sheet and the parallax image because the lenticular lens sheet and the paper on which the parallax image is printed are bonded together.

  The present invention has been made in view of such a problem, and a lenticular lens sheet that can easily generate an expressive and interesting three-dimensional image, and an expressive and interesting three-dimensional image. It is an object of the present invention to provide a print medium that can be sent as a postcard to other people.

  The lenticular lens sheet according to the present invention is basically a lenticular lens sheet for viewing a parallax image in order to solve the above-described problem, and is a plurality of sections into which the lenticular lens sheet is divided. A plurality of elongated unit lenses having a predetermined lens shape arranged in parallel on the surface thereof, and the longitudinal directions of the unit lenses disposed in at least two of the plurality of segments are different. This is the gist.

  According to the lenticular lens sheet of the present invention, the lenticular lens sheet can have a plurality of sections that are different in the longitudinal direction of the unit lens. Therefore, by using only the lenticular lens sheet of the present invention, it is possible to create an interesting three-dimensional image having a descriptive power by a plurality of lenticular lenses whose longitudinal directions of the unit lenses are different. In addition, since the lenticular lens sheet includes lenticular lenses in which the longitudinal directions of the plurality of unit lenses are different, the handling is easier than using a plurality of lenticular lens sheets in which the longitudinal directions of the unit lenses are different. It will be easy.

  In the lenticular lens sheet according to the present invention, the lenticular lens sheet includes at least a first section in which the longitudinal direction of the unit lens is a substantially horizontal direction and a longitudinal direction that is a vertical direction or an oblique direction. The distance between the unit lenses disposed on the surface of the second section is shorter than the distance between the unit lenses disposed on the surface of the first section.

  In this way, by using the first section in which the longitudinal direction of the unit lens is a substantially horizontal direction, the moving image that can show different images depending on the viewing angle, and the longitudinal direction is a vertical direction or an oblique direction. It is possible to generate a stereoscopic image that can show the viewer a stereoscopic image using the parallax of the left and right eyes of the observer using a certain second section. In addition, since the interval between unit lenses whose longitudinal direction is vertical or oblique is shorter than the interval between unit lenses whose longitudinal direction is substantially horizontal, it is possible to create a high-quality image that is less susceptible to image crosstalk. it can.

  In order to solve the above problems, the printing medium according to the present invention basically includes a first lenticular lens sheet in which a plurality of elongated first unit lenses having a predetermined lens shape are arranged in parallel on the surface, and a surface. A second lenticular lens sheet in which a plurality of elongated second unit lenses having a predetermined lens shape are arranged in parallel in a direction different from that of the plurality of first unit lenses, the first lenticular lens sheet, and the first A first substrate including a surface to which the first lenticular lens sheet is fixed, the base on a thin plate fixed to the back surface of the second lenticular lens sheet, and the second lenticular lens sheet to be fixed. The substrate divided into three sections, a second section including a surface and a third section, and the first lenticular lens sheet through A second parallax image to be viewed is printed through the first printing surface formed on the substrate on which the first parallax image to be viewed is printed and the second lenticular lens sheet. The second printing surface formed on the base material, the first lenticular lens sheet, and the base image on which a planar image that is an image to be viewed without passing through the second lenticular lens sheet is printed. A third printing surface formed on the material, and bending the base material at one or more boundary lines among a plurality of boundary lines dividing the three sections, The gist is to arrange the lenticular lens sheet and the second lenticular lens sheet on the third section.

  According to the printing medium according to the present invention, the base material is divided into three sections, the first lenticular lens sheet in which a plurality of first unit lenses are arranged in parallel is fixed to the first section, and the second A second lenticular lens sheet in which a plurality of second unit lenses are arranged in parallel in a direction different from the first unit lens is fixed to the section. Further, the division into three sections is performed by bending the base material at one or more boundary lines among a plurality of boundary lines dividing the three sections, thereby the first lenticular lens sheet and the second lenticular. The lens sheet is divided so as to be arranged on the third section. The base material is viewed through the first printing surface on which the first parallax image to be viewed through the first lenticular lens sheet and the second lenticular lens sheet are printed. A second printing surface on which the second parallax image to be printed is printed and a third printing surface on which the planar image is printed are formed.

  By doing this, it is possible to generate an expressive and interesting three-dimensional image using two lenticular lens sheets, which are different from the first lenticular lens sheet and the second lenticular lens sheet.

  In order to allow the first parallax image to be viewed through the first lenticular lens sheet, the first printing surface is provided on the surface of the first section where the first lenticular lens sheet is not fixed. Or the first printing surface needs to be formed in the portion of the third section that overlaps with the first lenticular lens sheet when the substrate is bent at the boundary of the section.

  If the first printing surface is formed on the surface of the first section where the first lenticular lens sheet is not fixed, the first unit lens and the first unit by bonding the lenticular lens sheet and the printing medium together. Since the position shift of the parallax image is less likely to occur, a three-dimensional image can be easily generated. If the first printing surface is formed in the portion of the third section that overlaps with the first lenticular lens sheet when the substrate is folded at the boundary of the section, the first unit lens and the first parallax image are formed at the portion to be folded. And the first unit lens and the first parallax image are less likely to be misaligned, and a three-dimensional image can be easily generated. In addition, a stereoscopic image using the second lenticular lens sheet can be easily generated in the same manner.

  In addition, since the third section overlaps the first lenticular lens sheet and the second lenticular lens sheet when folded, the back side of the first lenticular lens sheet and the second lenticular lens sheet is the third section. Can be hidden. Therefore, the printed first parallax image and second parallax image do not appear from the back side. And if an address etc. are written on the 3rd printing surface, the printed matter on which the interesting three-dimensional image was printed can be sent to others like a postcard.

  Further, in the above-described print medium according to the present invention, the base material is a rectangle composed of the rectangular third section, the first section obtained by dividing the rectangular area into two, and the second section. It has a shape.

  In this way, the print medium has a rectangular shape composed of the first section and the second section, and a rectangular shape including the third section. As a result, the boundary line that can be bent so that the first lenticular lens sheet and the second lenticular lens sheet are arranged on the third section is a rectangular shape that combines the first section and the second section. And only the boundary between the third area and the third section, so that only one folding is required.

  In the above-described printing medium according to the present invention, the first section and the second section are not in contact with each other, and the base material is a boundary line between the first section and the third section, and When bent at the boundary line between the second section and the third section, the first section and the second section do not overlap.

  If the first lenticular lens sheet and the second lenticular lens sheet are in contact with each other, it is difficult to increase the accuracy of the part in contact with the first lenticular lens sheet. However, in the above-described printing medium of the present invention, the first section and the second section are not in contact with each other, so the first lenticular lens sheet and the second lenticular lens sheet are not in contact with each other. This simplifies manufacturing.

  In the above-described print medium according to the present invention, the base material is divided so that the first section and the second section do not contact each other, and the first section is the first section. One or more first cut lines that can cut a part of the second section, and the second section has one or more second cut lines that can cut a part of the second section And when the base material is bent at a boundary line between the first section and the third section and a boundary line between the second section and the third section, the first section A portion of the first section and the second section using the one or more first cut lines and the one or more second cut lines so that the section and the second section do not overlap. The one or more first cut lines and the one or more second cuts at a position where a portion of the compartment can be cut off. Take lines are arranged.

  If it carries out like this, a 1st division and a 2nd division can be bend | folded to a 3rd division, after separating with a cut line. That is, since the shapes of the first lenticular lens sheet and the second lenticular lens sheet can be adjusted depending on the separation position, the degree of freedom of the generated stereoscopic image can be increased.

  In the printing medium according to the present invention described above, the first printing surface is formed on the surface of the first section opposite to the surface on which the first lenticular lens sheet is fixed. The second printing surface is formed on the surface of the second section of the substrate opposite to the surface to which the second lenticular lens sheet is fixed, and the third printing surface. Is formed on the surface of the third section that is not in contact with the first section or the second section when the substrate is bent.

  In this case, the first printing surface is formed on the surface of the first section where the first lenticular lens sheet is not fixed, so that the first unit by bonding the lenticular lens sheet and the printing medium together. Misalignment between the lens and the first parallax image is less likely to occur. Similarly, since the second printing surface is formed on the surface of the second section where the second lenticular lens sheet is not fixed, the positional shift between the second unit lens and the second parallax image is performed. Is less likely to occur. Further, since the third printing surface is formed on the surface of the third section that is not in contact with the first section or the second section when the substrate is bent, the third printing surface is addressed to the third printing surface. Can be written.

  In the above-described printing medium according to the present invention, the first printing surface and the second printing surface are the first boundary line or the second printing material in the third section. Formed on the surface in contact with the first section or the second section, and the third printed surface is formed when the substrate is bent. It is formed on the surface of the third section that is not in contact with the section or the second section.

  By so doing, the first printing surface is formed in the portion of the third section that overlaps the first lenticular lens sheet when the base material is folded at the boundary of the section. The first parallax image can be aligned, and the first unit lens and the first parallax image are less likely to be displaced. Secondly, since the printing surface is also formed in the portion of the third section that overlaps with the second lenticular lens sheet when bent, the alignment of the second unit lens and the second parallax image is performed at the bent portion. This makes it difficult for the position difference between the second unit lens and the second parallax image to occur. Further, since the third printing surface is formed on the surface of the third section that is not in contact with the first section or the second section when the substrate is bent, the third printing surface is addressed to the third printing surface. Can be written.

  In the printing medium according to the present invention described above, the first lenticular lens sheet and the first substrate are formed on the base material in a region where the first printing surface and the second printing surface are not formed. An adhesive layer is formed on at least one of the surface on the same side as the side fixed to the lenticular lens sheet 2 and the surface on the opposite side.

  If it carries out like this, it can adhere | attach easily after bending a base material.

  In the above-described print medium according to the present invention, the first print surface or the second print surface is provided with at least an ink absorbing layer or predetermined print paper that absorbs printing ink.

  In this way, when the first parallax image and the second parallax image are printed using a predetermined ink, the ink can be stably held on the printing surface. Deterioration can be suppressed.

  In the above-described printing medium according to the present invention, the base material has a crease serving as a reference for folding the base material between the first section or the second section and the third section. It is provided at the boundary.

  In this way, the substrate can be bent easily and accurately.

  In the printing medium according to the present invention described above, the first lenticular lens sheet includes the plurality of first unit lenses whose longitudinal direction is substantially horizontal, arranged in parallel, and the second lenticular lens sheet. The plurality of second unit lenses whose longitudinal direction is substantially vertical or oblique are arranged in parallel at an interval narrower than the interval at which the plurality of first unit lenses are arranged.

  By doing this, the interval between the unit lenses whose longitudinal direction is vertical or oblique is made shorter than the interval between the unit lenses whose longitudinal direction is substantially horizontal, so that a high-quality image that is less susceptible to image crosstalk is created. be able to.

  Embodiments of the present invention will be described below with reference to the drawings.

  A print medium 10 according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is an explanatory diagram schematically showing the components of the print medium 10. The print medium 10 has a rectangular lenticular lens sheet 12a in which a plurality of cylindrical convex lenses 20a (first unit lenses) are arranged in parallel, and a plurality of cylindrical convex lenses 20b (second unit lenses) in parallel. Are formed of a lenticular lens sheet 12b having a rectangular shape, a base material 30, an ink absorption layer 40, an ink transmission layer 50, an adhesive layer 70, a release sheet 80, a printing paper 60, and a crease 90.

  The print medium 10 includes a first section 11a indicating a range where the lenticular lens sheet 12a is present, a second section 11b indicating a range where the lenticular lens sheet 12b is present, and a range where the lenticular lens sheets 12a and 12b are not present. It is divided into three rectangles of the third section 11c shown. In this embodiment, the first section 11a and the lenticular lens sheet 12a, and the second section 11b and the lenticular lens sheet 12b have the same shape. Of course, a lenticular lens sheet 12a having an area smaller than that of the first section 11a may be arranged in the first section 11a. Similarly, a lenticular lens sheet 12b having an area smaller than that of the second section 11b may be disposed in the second section 11b. Even if the areas of the lenticular lens sheets 12a and 12b are reduced, the area of the stereoscopic image that can be viewed is only reduced, and the same effect as the present invention can be obtained.

  In this embodiment, the cylindrical axis direction of the plurality of convex lenses 20a arranged on the lenticular lens sheet 12a is the horizontal direction in FIG. 1, and the cylindrical axis direction of the plurality of convex lenses 20b arranged on the lenticular lens sheet 12b is vertical. It shall be direction. Further, for simplification of description, the lenticular lens sheet 12a will be described below assuming that it is composed of eight cylindrical convex lenses 20a, and the lenticular lens sheet 12b is composed of twelve cylindrical convex lenses 20b. Of course, as the lenticular lens sheets 12a and 12b, those in which the pitch of the convex lenses 20a and 20b is 30 to 180 LPI (Lens Per Inch) are usually used, and actually there are a number of convex lenses corresponding to these. .

  The lenticular lens sheets 12a and 12b are used as lenses such as PET (polyethylene terephthalate), PETG (glycol-modified polyethylene terephthalate), APET, PP, PS, PVC, acrylic, UV, PC (polycarbonate) resin, and PMMA (methacrylic) resin. It is formed from a transparent resin material that can be used, and the entire back surface portion thereof is fixed to the substrate 30. The fixing method is performed using a well-known material or method such as welding or adhesion depending on the material of the base material 30, but any method can be used that allows the lenticular lens sheets 12 a and 12 b and the base material 30 to be fixed while maintaining transparency. Anything is fine.

  In the following description, the lenticular lens sheet 12a. The surface of the print medium 10 to which the 12b is fixed is set as a table, and the lenticular lens sheet 12a. The surface of the print medium 10 on which 12b is not fixed is the back.

  The base material 30 is formed from a material having transparency, and for example, PETG resin is used. Of course, normal PET resin or the like may also be used, and has a transparency that allows a parallax image formed on the ink absorbing layer 40 described later to be viewed from the lenticular lens sheet 12a, 12b side, and bends from the crease 90. Any material is possible.

  In the base material 30, an ink absorbing layer 40 is formed in a portion corresponding to the back surface range of the first section 11 a and the second section 11 b on the side opposite to the side where the lenticular lens sheets 12 a and 12 b are fixed. The ink absorbing layer 40 is a component for absorbing the ejected ink and fixing the ink at the ejected position when the parallax image is printed by ejecting the ink. For example, PVA (polyvinyl alcohol) is used. ) And the like, and fine particles such as a cationic compound and silica. By using the ink absorbing layer 40 to fix the parallax image at a position corresponding to each convex lens, the parallax image can be appropriately formed.

  Furthermore, in this embodiment, an ink transmission layer 50 is formed on the back surface of the ink absorption layer 40. The ink transmission layer 50 is configured such that the ejected ink first adheres, and then the adhered ink passes through. That is, by appropriately transferring the ink to the ink absorption layer 40 and leaving no ink, the ink transmission layer 50 functions as a base for the parallax image.

  The ink transmission layer 50 is formed of, for example, titanium oxide, silica gel, PMMA (methacrylic resin), or the like, and exhibits a suitable white color as a base. Of course, if the back side of the print medium 60 or the adhesive layer 70 is opaque (for example, white) to the extent that it can function as a base for a parallax image, the ink permeable layer does not necessarily have to be configured.

  FIG. 2 is an explanatory diagram for explaining the back surface of the print medium 10. On the back surface of the print medium 10, there are a first print surface 100a and a second print surface 100b. The first printing surface 100a is a portion corresponding to the back surface of the first section 11a of the printing medium 10, and a parallax image to be viewed through the lenticular lens sheet 12a is printed thereon. The second printing surface 100b is a portion corresponding to the back surface of the second section 11b of the printing medium 10, and a parallax image to be viewed through the lenticular lens sheet 12b is printed thereon.

  On the other hand, as shown in FIG. 1, the base material 30 extends further from the fixing portion with the lenticular lens sheets 12a and 12b to the third section 11c in the right direction of the drawing. The third section 11c has a shape that overlaps with the entire back surface of the lenticular lens sheets 12a and 12b when bent on the basis of the right long side of the lenticular lens sheets 12a and 12b. That is, it has a rectangular shape that substantially coincides with the rectangle obtained by combining the lenticular lens sheets 11a and 12b.

  A printing paper 60 is adhered to the third printing surface 100c on the front side of the third section 11c formed by extending the base material 30 by adhesion or the like. The printing paper 60 is a surface on which the address is written by the creator by handwriting or printing using a printer or the like. In particular, when printing is performed, for example, printing such as inkjet recording paper is used. A suitable sheet may be used.

  An adhesive layer 70 is formed on the back surface of the base material 30 in the third section 11c, and a release sheet 80 is attached to the back surface of the adhesive layer 70. The adhesive layer 70 adheres the base material 30 in the third section 11c to the back surface of the ink transmission layer 50 when the third section 11c is bent in the back surface direction of the first section 11a and the second section 11b. Is for. The adhesive layer 70 may be formed using, for example, an epoxy-based or cyanoacrylate-based adhesive. Of course, any material that can bond the ink transmission layer 50 and the substrate 30 may be used.

  The release sheet 80 is for protecting the adhesiveness from being deteriorated due to the adhesive layer 70 becoming dirty, and the third section 11c is bent and adhered to the back surfaces of the first section 11a and the second section 11b. At this time, it is peeled off from the adhesive layer 70 prior to bonding. Therefore, any material that can be peeled from the adhesive layer 70 may be a resin material or paper.

  The manner in which the third section 11c is bent and bonded to the back side of the first section 11a and the second section 11b will be described with reference to FIG. FIG. 3 is a schematic view of the print medium 10 in this embodiment as viewed from the thickness direction. In addition, since each component which comprises the printing medium 10, such as the base material 30 and each layer mentioned above, is formed in the sheet form of thickness from several dozen microns to several hundred microns, in order to simplify description in FIG. Each component is omitted and shown as a single sheet. Further, FIG. 3 is a view seen from the lenticular lens sheet 12b, and therefore the lenticular lens sheet 12a is not shown.

  As shown in FIG. 3A, a parallax image is printed on the print medium 10 in a portion corresponding to the entire back side (lower side of the drawing) of the first section 11a (not shown) and the second section 11b. In addition, “address writing” is performed on a portion corresponding to the front side (upper side of the drawing) of the third section 11c. Further, a crease 90 for folding the third section 11c toward the first section 11a and the second section 11b is provided on the back surface of the print medium 10.

  Then, as shown in FIG. 3B, the third section 11c is bent with the fold line 90 as a reference, and the release sheet 80 is peeled off from the adhesive layer 70. The surface of the adhesive layer 70 and the surface of the ink transmission layer 50 are bonded together by bending the section 11c.

  Then, when the surface of the adhesive layer 70 and the surface of the ink transmission layer 50 are bonded together, as shown in FIG. 3C, the respective lenticular lens sheets are transmitted through the surfaces of the lenticular lens sheets 12a and 12b. Thus, a stereoscopic image can be viewed, and the address can be confirmed from the third section 11c. That is, the print medium 10 becomes a “postcard” in which a stereoscopic image can be viewed. In addition, since the lenticular lens sheets 12a and 12b are used, it is possible to obtain an interesting three-dimensional image with expressive power as compared with the case of using one lenticular lens sheet. For example, it is possible to provide a 3D image using an image in which the image changes depending on an angle formed by the convex lens 20a in the horizontal direction and a left-right parallax generated by the vertical convex lens 20b.

  As described with reference to FIG. 3, the printing medium 10 in the present embodiment is easily bonded to the portion of the lenticular lens sheets 12 a and 12 b and the portion of the third section 11 c by bending with respect to the fold 90. be able to. Therefore, the creator can easily create a three-dimensional image without performing the troublesome task of pasting the address sheet on the parallax image using an adhesive while aligning with the lenticular lens sheet. It is possible to create a postcard that can be viewed.

  In the present embodiment, the address is first printed, and this is shown in FIG. FIG. 4A is a schematic view of the print medium 10 viewed from the thickness direction, and FIG. 4B is a schematic view of the print medium 10 viewed from the top.

  As shown in FIG. 4A, the carriage 190 of the printer (not shown) includes a detection device 191 for detecting the pitch of the convex lenses 20b of the lenticular lens sheet 12b using the reflected light 191a. Then, the pitch of the convex lens 20b is detected in accordance with the carriage scanning (arrow in the figure). The detection range is a range where the lenticular lens sheet 12b exists as shown by the shaded portion in FIG. 4B, and this range is indicated by the carriage 190 as shown by the arrow in FIG. 4B. A pitch detection scan is performed along with the scanning. Although not shown, the pitch of the convex lens 20a in the horizontal direction in FIG. 4 is also detected when the print medium is fed. In this way, the detection device 191 detects the pitch of the convex lens 20a and the convex lens 20b. The detected result is subjected to predetermined processing and stored in, for example, a storage unit built in the printer, whereby the pitch information of each convex lens of the lenticular lens sheet can be stored.

  Thereafter, when the carriage 190 comes within the range of the printing paper 60, the ink 95 is ejected from a printing head (not shown) provided in the carriage 190 at a predetermined position, and a predetermined address is printed on the surface of the printing paper 60. To do.

  Next, printing of parallax images will be described. In the range of the ink permeable layer 50 in the lenticular lens sheet 12b, that is, in the second printing surface 100b (FIG. 2) on which a parallax image to be viewed through the lenticular lens sheet 12b is printed, each of the stored convex lenses described above. Based on the read pitch information, the ink 95 is ejected from a print head (not shown) provided in the carriage 190 to a predetermined position corresponding to each convex lens 20b based on the read pitch information. Ink is attached to the surface of 50 and a parallax image is printed. Thereafter, as described with reference to FIG. 1, the attached ink moves to the ink absorption layer 40, whereby a parallax image to be viewed through the lenticular lens sheet 12 b is formed on the back surface of the substrate 30.

  The same applies to the range of the ink transmission layer 50 in the lenticular lens sheet 12a, that is, the first printing surface 100a (FIG. 2) for printing the parallax image to be viewed through the lenticular lens sheet 12a. The stored pitch information of each convex lens 20a is read, and ink 95 is ejected from a print head (not shown) provided in the carriage 190 to a predetermined position corresponding to each convex lens 20a based on the read pitch information. Then, ink is attached to the surface of the ink transmission layer 50, and a parallax image is printed. Thereafter, as described with reference to FIG. 1, the attached ink moves to the ink absorption layer 40, whereby a parallax image to be viewed through the lenticular lens sheet 12 a is formed on the back surface of the substrate 30.

  As described above, according to the printing medium 10 in the present embodiment, two types of parallax images to be viewed through the lenticular lens sheets 12 a and 12 b on the ink transmission layer 50 provided on the printing medium 10 are printed on the printing paper 60. Each address can be printed. Then, it is possible to detect the pitch information of the convex lenses 20a and 20b at the time of printing the address, and print two types of parallax images to be viewed through the lenticular lens sheets 12a and 12b based on the detected pitch information. Thus, a parallax image can be printed at a position that matches the position of each convex lens. Further, by folding the sheet with the crease 90 as a reference, the addressed printed portion can be easily attached to the back side of the lenticular lens sheets 12a and 12b.

  In addition, as shown in FIG. 1, by setting the pitch of the convex lenses 20a to be larger than the pitch of the convex lenses 20b, it is possible to appreciate a high-quality image with less influence of image crosstalk.

  As mentioned above, although the Example which actualized this invention was described, this invention is not limited to such an Example at all, Of course, it can implement with a various form within the range which does not deviate from the meaning of this invention. It is.

(Modification 1)
FIG. 5 is an explanatory diagram for explaining the print medium 10 of the first modification. FIG. 5A is a diagram of the print medium 10 as viewed from the front side (the surface on which the lenticular lens sheet is fixed). FIG. 5B is a view of the printing medium 10 as viewed from the back side (the surface on which the lenticular lens sheet is not fixed). FIG. 5C is a cross-sectional view of the print medium 10 as viewed from the side with the lenticular lens sheet 12b.

  As shown in FIG. 5A, the print medium 10 of the first modification is divided into a first section 11a, a second section 11b, and a third section 11c as in the first embodiment. A lenticular lens sheet 12a in which a plurality of horizontal convex lenses 20a are arranged in parallel is arranged in the first section 11a, and a lenticular lens sheet 12b in which a plurality of convex lenses 20b in the vertical direction are arranged in parallel in the second section 11b. Is placed. As shown in FIG. 5B, the first printing surface 100a and the second printing surface 100b are formed on the back side of the third section 11c.

  Here, the structure of the print medium of Modification 1 will be described in more detail with reference to FIG. In the third section 11c of the print medium 10, a print paper 60 as a third print surface 100c for printing an address and the like, and a print paper 60 as a first print surface 100a and a second print surface 100b. Are attached to the base material 30 by adhesion or the like. In the first section 11 a and the second section 11 b, lenticular lens sheets 12 a and 12 b are fixed to the base material 30, and an adhesive layer 70 and a release sheet 80 are provided on the back side of the base material 30.

  When a three-dimensional image is generated using the printing medium 10 according to the first modification, first, the pitch of the convex lenses 20a and 20b is detected as in the first embodiment, and the third printing surface 100c, that is, the front side is detected. The address is printed on a certain printing paper 60. Then, referring to the detected pitch of the convex lenses 20a and 20b, the parallax image to be viewed through the lenticular lens sheet 12a is displayed on the first printing surface 100a and the parallax image to be viewed through the lenticular lens sheet 12b. Is printed on the second printing surface 100b. Thereafter, the release sheet 80 is removed, and the printing medium is folded as shown by the arrow in FIG. 5C to bond the printing paper 60 and the adhesive layer 70, thereby creating a postcard having a three-dimensional image. In this way, the lenticular lens sheet and the parallax image can be aligned simply by folding at the crease 90, so that the positional deviation is less likely to occur.

(Modification 2)
FIG. 6 is an explanatory diagram for explaining the print medium 10 according to the second modification. FIG. 6A is a view of the printing medium 10 as viewed from the front side (the surface on which the lenticular lens sheet is fixed). FIG. 6B is a view of the print medium 10 as viewed from the back side (the surface on which the lenticular lens sheet is not fixed). FIG. 6C is a cross-sectional view of the print medium 10.

  As shown in FIG. 6A, the print medium 10 of Modification 2 includes a third section 11c, a first section 11a and a second section 11b each having a shape obtained by dividing the third section in half. It is divided. Further, the first section 11a and the second section 11b are arranged so as to be in opposite positions across the third section 11c so as not to contact each other. In addition, when the 1st division 11a and the 2nd division 11b are bent toward the 3rd division 11c, the 1st division 11a and the 2nd division 11b are arrange | positioned so that it may not overlap. A lenticular lens sheet 12a in which a plurality of horizontal convex lenses 20a are arranged in parallel is arranged in the first section 11a, and a lenticular lens sheet 12b in which a plurality of convex lenses 20b in the vertical direction are arranged in parallel in the second section 11b. Is placed. In addition, as shown in FIG. 6B, a first printing surface 100a is formed on the back side of the first section 11a, and a second printing surface 100b is formed on the back side of the second section 11b. The

  Here, the structure of the print medium of Modification 2 will be described in more detail with reference to FIG. The third section 11c is provided with a printing paper 60, a substrate 30, an adhesive layer 70, and a release sheet 80 as a third printing surface 100c for printing an address and the like. The first section 11a includes a lenticular lens sheet 12a, a base material 30 fixed to the lenticular lens sheet 12a, an ink absorption layer 40, and an ink transmission layer 50. The second section 11b includes a lenticular lens sheet 12b, a base material 30 fixed to the lenticular lens sheet 12b, an ink absorption layer 40, and an ink transmission layer 50. Since the ink transmission layer 50 functions as a base of a parallax image as described above, the back side of the print medium 60 or the adhesive layer 70 is opaque enough to function as a base for a parallax image (for example, If it is white), it is not always necessary to configure the ink transmission layer.

  When a three-dimensional image is generated using the printing medium 10 according to the second modification, first, the third printing surface 100c, that is, the front side is detected while detecting the pitch of the convex lenses 20a and 20b as in the first embodiment. The address is printed on a certain printing paper 60. Then, referring to the detected pitch of the convex lenses 20a and 20b, the parallax image to be viewed through the lenticular lens sheet 12a is displayed on the first printing surface 100a and the parallax image to be viewed through the lenticular lens sheet 12b. Is printed on the second printing surface 100b. Thereafter, the release sheet 80 is removed, and the first section 11a and the second section 11b are bent toward the third section 11c and adhered by the adhesive layer 70 as indicated by arrows in FIG. A postcard with a typical image is created. In this way, it can be used as a postcard simply by folding it at the crease 90, and the parallax image can be printed directly on the back of the lenticular lens sheet, so that the positional deviation is less likely to occur.

(Modification 3)
FIG. 7 is an explanatory diagram for explaining the print medium 10 of the third modification. FIG. 7A is a diagram of the print medium 10 as viewed from the front side (the surface on which the lenticular lens sheet is fixed). FIG. 7B is a view of the print medium 10 as viewed from the back side (the surface on which the lenticular lens sheet is not fixed). FIG. 7C is a cross-sectional view of the print medium 10.

  As shown in FIG. 7A, the print medium 10 of Modification 3 includes a third section 11c, a first section 11a and a second section 11b each having a shape obtained by dividing the third section in half. It is divided. Further, the first section 11a and the second section 11b are arranged so as to be in opposite positions across the third section 11c so as not to contact each other. In addition, when the 1st division 11a and the 2nd division 11b are bent toward the 3rd division 11c, the 1st division 11a and the 2nd division 11b are arrange | positioned so that it may not overlap. A lenticular lens sheet 12a in which a plurality of horizontal convex lenses 20a are arranged in parallel is arranged in the first section 11a, and a lenticular lens sheet 12b in which a plurality of convex lenses 20b in the vertical direction are arranged in parallel in the second section 11b. Is placed. Further, as shown in FIG. 7B, a first printing surface 100a and a second printing surface 100b are formed on the back side of the third section 11c.

  Here, the structure of the print medium 10 of Modification 3 will be described in more detail with reference to FIG. In the third section 11c of the print medium 10, a print paper 60 as a third print surface 100c for printing an address and the like, and a print paper 60 as a first print surface 100a and a second print surface 100b. Are attached to the base material 30 by adhesion or the like. In the first section 11 a, the lenticular lens sheet 12 a is fixed to the base material 30, and the adhesive layer 70 and the release sheet 80 are provided on the back side of the base material 30. Similarly, the lenticular lens sheet 12b is fixed to the base material 30 in the second section 11b, and the adhesive layer 70 and the release sheet 80 are provided on the back side of the base material 30.

  When a three-dimensional image is generated using the printing medium 10 of Modification 3, first, the third printing surface 100c, that is, the front side is detected while detecting the pitch of the convex lenses 20a and 20b as in the first embodiment. The address is printed on a certain printing paper 60. Then, referring to the detected pitch of the convex lenses 20a and 20b, the parallax image to be viewed through the lenticular lens sheet 12a is displayed on the first printing surface 100a and the parallax image to be viewed through the lenticular lens sheet 12b. Is printed on the second printing surface 100b. Thereafter, the release sheet 80 is removed, the printing medium is bent as shown by the arrow in FIG. 7C, and the printing paper 60 and the adhesive layer 70 are bonded together to create a postcard having a three-dimensional image. In this way, the lenticular lens sheet and the parallax image can be aligned simply by folding at the crease 90, so that the positional deviation is less likely to occur.

(Modification 4)
FIG. 8 is an explanatory diagram for explaining the print medium 10 of the fourth modification. FIG. 8A is a diagram of the print medium 10 as viewed from the front side (the surface on which the lenticular lens sheet is fixed). FIG. 8B is a view of the printing medium 10 as viewed from the back side (the surface on which the lenticular lens sheet is not fixed). FIG. 8C is a cross-sectional view of the print medium 10.

  As shown in FIG. 8A, the print medium 10 of Modification 4 is divided into a third section 11c and a first section 11a and a second section 11b having the same shape as the third section 11c. Is done. In addition, the first section 11a and the second section 11b are disposed so as to be in opposite positions across the third section 11c so as not to contact each other. Further, the first section 11a and the second section 11b are provided with a cut line 110 that can cut off a part of the print medium 10. Moreover, the position of this cut line 110 is arrange | positioned so that it may become the same position in the 1st division 11a and the 2nd division 11b. Further, as shown in FIG. 8B, a first printing surface 100a is formed on the back side of the first section 11a, and a second printing surface 100b is formed on the back side of the second section 11b. The

  Here, the structure of the print medium of Modification 4 will be described in more detail with reference to FIG. The third section 11c of the print medium 10 is provided with a printing paper 60, a base material 30, an adhesive layer 70, and a release sheet 80 as a third printing surface 100c for printing addresses and the like. The first section 11a includes a lenticular lens sheet 12a, a base material 30 fixed to the lenticular lens sheet 12a, an ink absorption layer 40, and an ink transmission layer 50. The second section 11b includes a lenticular lens sheet 12b, a base material 30 fixed to the lenticular lens sheet 12b, an ink absorption layer 40, and an ink transmission layer 50. Since the ink transmission layer 50 functions as a background of the parallax image as described above, the back side of the print medium 60 or the adhesive layer 70 functions as a background for the parallax image as in the second modification. If it is opaque as much as possible (for example, white), the ink transmission layer does not necessarily have to be configured.

  When a three-dimensional image is generated using the printing medium 10 according to the fourth modification, first, the pitch of the convex lenses 20a and 20b is detected as in the first embodiment, and the third printing surface 100c, that is, the front side is detected. The address is printed on a certain printing paper 60. Then, referring to the detected pitch of the convex lenses 20a and 20b, the parallax image to be viewed through the lenticular lens sheet 12a is displayed on the first printing surface 100a and the parallax image to be viewed through the lenticular lens sheet 12b. Is printed on the second printing surface 100b. Then, a part of the first section 11a and the second section 11b is separated by the cut line 110 so as not to overlap when the print medium 10 is bent as shown by an arrow in FIG. For example, in FIG. 8 (a), when the first section 11a is cut off by the horizontal cut line 110 in the upper half of the figure, the second section 11b is cut by the horizontal cut line 110 in the lower half of the figure. Disconnect.

  Thereafter, the release sheet 80 is removed, and the first section 11a and the second section 11b are folded toward the third section 11c and bonded with the adhesive layer 70, thereby creating a postcard having a three-dimensional image. . In this way, the shapes of the lenticular lens sheet 11a and the lenticular lens sheet 11b can be adjusted depending on the position to be separated, so that the degree of freedom of the generated stereoscopic image can be increased.

(Modification 5)
FIG. 9 is an explanatory diagram for explaining the print medium 10 of the fifth modification. FIG. 9A is a view of the print medium 10 as viewed from the front side (the surface on which the lenticular lens sheet is fixed). FIG. 9B is a view of the print medium 10 as viewed from the back side (the surface on which the lenticular lens sheet is not fixed). FIG. 9C is a cross-sectional view of the print medium 10.

  As shown in FIG. 9A, the print medium 10 of Modification 5 is divided into a third section 11c, and the third section into a first section 11a and a second section 11b having the same shape. . Further, the first section 11a and the second section 11b are arranged so as to be in opposite positions across the third section 11c so as not to contact each other. Further, the first section 11a and the second section 11b are provided with a cut line 110 that can cut off a part of the print medium 10. Moreover, the position of this cut line 110 is arrange | positioned so that it may become the same position in the 1st division 11a and the 2nd division 11b. Further, as shown in FIG. 9B, a first printing surface 100a is formed on the back side of the first section 11a, and a second printing surface 100b is formed on the back side of the second section 11b. The

  Here, the structure of the print medium of Modification 5 will be described in more detail with reference to FIG. In the third section 11c of the print medium 10, a print paper 60 as a third print surface 100c for printing an address and the like, and a print paper 60 as a first print surface 100a and a second print surface 100b. Are attached to the base material 30 by adhesion or the like. In the first section 11 a, the lenticular lens sheet 12 a is fixed to the base material 30, and the adhesive layer 70 and the release sheet 80 are provided on the back side of the base material 30. Similarly, the lenticular lens sheet 12b is fixed to the base material 30 in the second section 11b, and the adhesive layer 70 and the release sheet 80 are provided on the back side of the base material 30.

  When a three-dimensional image is generated using the printing medium 10 of the modified example 5, first, the pitch of the convex lenses 20a and 20b is detected as in the first example, and the third printed surface 100c, that is, the front side is detected. The address is printed on a certain printing paper 60. Then, referring to the detected pitch of the convex lenses 20a and 20b, the parallax image to be viewed through the lenticular lens sheet 12a is displayed on the first printing surface 100a and the parallax image to be viewed through the lenticular lens sheet 12b. Is printed on the second printing surface 100b. Then, a part of the first section 11a and the second section 11b is separated by the cut line 110 so as not to overlap when the print medium 10 is bent as shown by an arrow in FIG. For example, in FIG. 9A, when the upper half of the figure is cut off by the horizontal cut line 110 in the first section 11a, the second half 11b is cut by the horizontal cut line 110 in the lower half of the figure. Disconnect.

  Thereafter, the release sheet 80 is removed, and the first section 11a and the second section 11b are folded toward the third section 11c and bonded with the adhesive layer 70, thereby creating a postcard having a three-dimensional image. . In this way, the shapes of the lenticular lens sheet 11a and the lenticular lens sheet 11b can be adjusted depending on the position to be separated, so that the degree of freedom of the generated stereoscopic image can be increased.

(Modification 6)
Further, the lenticular lens sheets 12a and 12b of the printing medium 10 according to the first embodiment may be used as a single lenticular lens sheet. That is, it can be used as a lenticular lens sheet in which two lenticular lenses having different convex lens directions are arranged on one rectangular sheet. This makes it possible to generate an expressive and interesting three-dimensional image using a plurality of lenticular lenses.

(Modification 7)
In the first embodiment and the first to sixth modifications, the method using the lenticular lenses in two different directions has been described, but the first section 11a or the second section 11b is further divided to create a new section. A lenticular lens having a direction different from that of the lenticular lens sheets 12a and 12b may be arranged in a new section, and three or more lenticular lenses having different directions may be used. In this way, it is possible to generate an interesting three-dimensional image with more expressive power.

FIG. 3 is an explanatory diagram schematically showing components of the print medium 10. FIG. 3 is an explanatory diagram for explaining the back surface of the print medium. The schematic diagram which looked at the printing medium 10 from the thickness direction. Explanatory drawing for demonstrating the detection method of the pitch of a convex lens. Explanatory drawing for demonstrating the printing medium of the modification 1. As shown in FIG. Explanatory drawing for demonstrating the printing medium of the modification 2. FIG. Explanatory drawing for demonstrating the printing medium of the modification 3. FIG. Explanatory drawing for demonstrating the printing medium of the modification 4. FIG. Explanatory drawing for demonstrating the printing medium of the modification 5. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Print medium, 11a ... 1st division, 11b ... 2nd division, 11c ... 3rd division, 12a ... Lenticular sheet, 12b ... Lenticular sheet, 20a ... Convex lens, 20b ... Convex lens, 30 ... Base material, 40 ... ink absorbing layer, 50 ... ink permeable layer, 60 ... printing paper, 70 ... adhesive layer, 80 ... release sheet, 90 ... fold, 100a ... first printing surface, 100b ... second printing surface, 100c ... third 110: cut line, 190 ... carriage, 191 ... detection device, 191a ... reflected light, 95 ... ink.

Claims (12)

A lenticular lens sheet for viewing parallax images,
A plurality of sections into which the lenticular lens sheet is partitioned, the plurality of sections in which a plurality of elongated unit lenses having a predetermined lens shape are arranged in parallel on the surface of each section;
A lenticular lens sheet characterized in that longitudinal directions of the unit lenses arranged in at least two of the plurality of sections are different. The lenticular lens sheet according to claim 1,
The lenticular lens sheet has at least a first section in which the longitudinal direction of the unit lens is a substantially horizontal direction and a second section in which the longitudinal direction is a vertical direction or an oblique direction,
The lenticular lens sheet characterized in that an interval between the unit lenses arranged on the surface of the second section is shorter than an interval between the unit lenses arranged on the surface of the first section. A first lenticular lens sheet in which a plurality of elongated first unit lenses having a predetermined lens shape are arranged in parallel on the surface;
A second lenticular lens sheet in which a plurality of elongated second unit lenses having a predetermined lens shape on the surface are arranged in parallel in a direction different from that of the plurality of first unit lenses;
A first section including a base on a thin plate fixed to the back surfaces of the first lenticular lens sheet and the second lenticular lens sheet, the first section including a surface to which the first lenticular lens sheet is fixed; The substrate divided into three sections, a second section including a surface to which the second lenticular lens sheet is fixed, and a third section;
A first printing surface formed on the substrate on which a first parallax image to be viewed through the first lenticular lens sheet is printed;
A second printing surface formed on the substrate on which a second parallax image to be viewed through the second lenticular lens sheet is printed;
A third printing surface formed on the substrate on which a flat image, which is an image to be viewed without passing through the first lenticular lens sheet and the second lenticular lens sheet, is printed.
The first lenticular lens sheet and the second lenticular lens sheet are folded into the third lenticular lens sheet by bending the base material at one or more boundary lines among a plurality of boundary lines dividing the three sections. A print medium characterized in that the print medium can be arranged on a section of the print medium. The print medium according to claim 3,
The printing medium is characterized in that the base has a rectangular shape composed of the rectangular third section, the first section obtained by dividing the rectangular area into two, and the second section. . The print medium according to claim 3,
The first section and the second section are not in contact with each other,
When the substrate is bent at a boundary line between the first section and the third section, and a boundary line between the second section and the third section, the first section and the first section A printing medium characterized in that the two sections do not overlap. The print medium according to claim 3,
The base material is divided so that the first section and the second section do not contact each other;
The first compartment has one or more first cut lines that can sever a portion of the first compartment;
The second compartment has one or more second cut lines that can sever a portion of the second compartment;
When the substrate is bent at a boundary line between the first section and the third section, and a boundary line between the second section and the third section, the first section and the first section Part of the first compartment and part of the second compartment using the one or more first cut lines and the one or more second cut lines so that the two sections do not overlap. The print medium is characterized in that the one or more first cut lines and the one or more second cut lines are arranged at a position where the one or more first cut lines can be separated. The print medium according to claim 3,
The first printing surface is formed on a surface of the first section opposite to a surface to which the first lenticular lens sheet is fixed,
The second printing surface is formed on the surface of the second section of the substrate opposite to the surface to which the second lenticular lens sheet is fixed,
The third printing surface is formed on a surface of a third section that is not in contact with the first section or the second section when the substrate is bent. . The print medium according to claim 3,
The first printing surface and the second printing surface are the first printing surface when the base material is bent along the first boundary line or the second boundary line in the third section. Formed on the surface in contact with the second compartment or the second compartment,
The third printing surface is formed on a surface of a third section that is not in contact with the first section or the second section when the substrate is bent. . The print medium according to claim 3,
On the base material, a region where the first printing surface and the second printing surface are not formed is fixed to the first lenticular lens sheet and the second lenticular lens sheet lens sheet. A printing medium, wherein an adhesive layer is formed on at least one of the same side surface and the opposite side surface. The print medium according to claim 3,
A printing medium, wherein the first printing surface or the second printing surface is provided with at least an ink absorbing layer or predetermined printing paper that absorbs printing ink. The print medium according to claim 3,
The base material is provided with a crease serving as a reference for folding the base material at a boundary between the first section or the second section and the third section. Medium. The print medium according to claim 3,
In the first lenticular lens sheet, the plurality of first unit lenses whose longitudinal direction is substantially horizontal are arranged in parallel,
In the second lenticular lens sheet, the plurality of second unit lenses whose longitudinal direction is substantially vertical or oblique are arranged in parallel at an interval narrower than the interval at which the plurality of first unit lenses are arranged. A print medium.

Images