JP5703743B2 - LENS SHEET BODY AND METHOD FOR PRODUCING LENS SHEET BODY - Google Patents

Description

  The present invention relates to a lens sheet body and a method for manufacturing the lens sheet body.

  Among print media, there is a lenticular sheet in which a large number of cylindrical convex lenses (also referred to as lenticular lenses; hereinafter referred to as convex lenses) are arranged in parallel. On this lenticular sheet, a large number of stripe-shaped subdivided images corresponding to the pitch of the convex lenses are recorded side by side within the pitch of each convex lens. Thereby, when the user visually recognizes the printed image through the convex lens, the visually recognized image is stereoscopically viewed, or the visually recognized image is switched by changing the viewing angle (having directivity). It becomes possible.

  In such a lenticular sheet, for example, as disclosed in Patent Document 1 and Patent Document 2, a printed image is visually recognized from both the front and back surfaces. In Patent Document 1, a printing surface is formed in a symmetrical unit region across adjacent portions adjacent to each other, the lenticular sheet is folded at the adjacent portion, and the two printing surfaces are overlapped, and the front side and the back side are separated. The content that a stereoscopic image can be visually recognized is disclosed. Further, Patent Document 2 discloses a technique in which cross-talk is prevented from occurring by widening the viewing angle by using a lens that is bonded to the front and back so that the convex portion of the single-convex lens faces outward. Is disclosed.

JP 2007-334091 A (see abstract, drawings, paragraphs 0047-0049, etc.) Japanese Unexamined Patent Application Publication No. 2010-122701 (Summary, Embodiment 2 and FIG. 5)

  According to the technical contents disclosed in Patent Document 1 described above, there are the following problems. (1) That is, according to the technical content disclosed in Patent Document 1, separate stereoscopic images are visually recognized on the front surface and the back surface. Therefore, it is troublesome in that printing must be performed twice. (2) Further, according to the technical content disclosed in Patent Document 1, since two printing surfaces are overlapped on the front side and the back side, a situation may occur in which the printed image on the back side can be seen through even when viewed from the front side. Absent. (3) Further, when the lenticular sheet is bent as in Patent Document 1, the size after the bending is reduced. In order to prevent this, it is sufficient to prepare a large lenticular sheet. However, since the size of the lenticular sheet that can be printed by the printer is limited, when the lenticular sheet is folded as described above, it is difficult to avoid size reduction after the folding.

  In order not to cause the above problems, a plurality of lenticular sheets are used, for example, printing is performed only on the lenticular sheet located on the front side, and the lenticular sheet is bonded to the back side, and an image that can be viewed from the front side What is necessary is just to make it the state which becomes left-right symmetric with the image visually recognized from the back side. However, in such a lenticular sheet, for example, when the lenticular sheet is stood and viewed so that it can be viewed from both the front and back surfaces without contacting the back surface of the lenticular sheet to a mounting surface such as a desk or a photo stand It is estimated that there are many. In this case, for example, when viewed from the surface, if the other side of the lenticular sheet is visible, the printed image becomes inconspicuous, and the printed image cannot be emphasized, and the visibility is not good.

  In addition, when a plurality of lenticular sheets are bonded together, it is difficult to accurately position the bonding positions.

  In Patent Document 2, from the viewpoint of preventing the occurrence of crosstalk, since the front and back surfaces are bonded so that the convex portions of the one-convex lens face outward, the above-described print image becomes inconspicuous. It has nothing to do with the point that the lenticular sheet is accurately bonded.

  The present invention has been made in order to solve at least one of the above-described problems. The printed image can be satisfactorily viewed even when viewed from both the front and back sides, and positioning between the lenticular sheets. It is an object of the present invention to provide a lens sheet body and a method for manufacturing the lens sheet body that can achieve at least one of the following.

  In order to solve the above-described problem, the lens sheet body of the present invention includes a first convex lens having one direction as a longitudinal direction on one surface side of a first base material having light transmittance, A lens sheet body in which a parallax image for the right eye and a left eye, or a changing image in which a picture is switched depending on a viewing angle is formed at a position corresponding to each of the first convex lenses on the other surface side of the substrate, A second base material having light transparency and a second convex lens are also arranged on the surface side of the first convex lens, and the second convex lens is formed at the same lens pitch as the first convex lens, and when viewed in plan The length of the second convex lens is arranged along the same longitudinal direction as the length of the first convex lens, and the second convex lens is orthogonal to the normal direction and the longitudinal direction of the first substrate. The position corresponding to the first convex lens in the orthogonal direction The printing image is provided with an image forming ink for forming a parallax image or a changing image, and a light shielding for the purpose of shielding light from a portion of the printing range where the image forming ink is not attached. It is formed by adhering ink.

  In the case of such a configuration, when the print image is viewed from the surface side of the lens sheet body, the light shielding ink adheres to the gap portion where the image forming ink does not adhere and a print image is formed. It is possible to reduce the occurrence of a situation where the other side of the lens sheet body is visible. Therefore, the printed image becomes conspicuous, the printed print image can be emphasized, and the visibility of the printed image can be improved. Further, with this lens sheet body, since the printed image can be viewed from both the front side and the back side, it is possible to appreciate a symmetrical print image from both the front and back sides.

  Further, according to another aspect of the present invention, in the above-described invention, a guide portion is provided on the outer edge side out of the printing range of the other surface side of the first base material and the second base material. The guide portion is positioned between a first lenticular sheet having a first base material and a first convex lens and a second lenticular sheet having a second base material and a second convex lens. It is preferable that a positioning part is provided.

  In such a configuration, the guide portion is provided with a positioning portion, and the positioning portion allows the first lenticular sheet, the second base material, and the second lenticular sheet having the second convex lens. It is possible to accurately perform positioning between the two. As a result, the bonding between the first lenticular sheet and the second lenticular sheet can be performed accurately without misalignment.

  Further, according to another aspect of the present invention, in the above-described invention, the guide portion includes a recess that is recessed from the other surface side of the first base material and the second base material toward the one surface side, and the first base material. And a convex portion projecting in a direction away from the other surface side of the second base material, the concave portion and the convex portion in the first base material, and the convex shape in the second base material It is preferable that positioning between a 1st lenticular sheet and a 2nd lenticular sheet is made | formed by a part and a recessed part fitting.

  In the case of such a configuration, the first lenticular sheet and the second lenticular sheet are formed by fitting the concave portion and the convex portion in the first base material with the convex portion and the concave portion in the second base material. It is possible to accurately perform positioning between the two. Further, since positioning is performed by fitting, the positioning work can be made more efficient.

  In addition, in another aspect of the present invention, in the above-described invention, the guide portion is a marking formed on the other surface of the first base material and the second base material, and the marking is along the longitudinal direction. The linear part has a linear part in the first base material and the linear part in the second base material, which are arranged at predetermined intervals with a gap along the orthogonal direction. It is preferable that positioning between the first lenticular sheet and the second lenticular sheet is performed.

  When configured in this way, the linear portion of the first base material and the linear portion of the second base material are overlapped, thereby changing the thickness due to the position change of the overlapping portion of the linear portion. Thus, accurate positioning between the first lenticular sheet and the second lenticular sheet can be performed.

  Furthermore, another aspect of the present invention is a method for manufacturing a lens sheet body in which a first convex lens having one direction as a longitudinal direction is disposed on one surface side of a first base material having optical transparency. An image forming step of forming a parallax image for the right eye and a left eye, or a changing image in which a picture is switched depending on a viewing angle at a position corresponding to each of the first convex lenses on the other surface side of the first base material; The second convex lens is mounted on the other surface side, and the second base material having optical transparency is used. The second surface side of the second base material on which the second convex lens is not mounted is the first surface side. The second convex lens is formed at the same lens pitch as that of the first convex lens, and when viewed in plan, the second convex lens is bonded to the other surface of the base material in a state of facing the other surface side. The length of the second convex lens is the same as the length of the first convex lens. The print image is arranged along the longitudinal direction, and the print image formed by the image forming process is attached with the image forming ink for forming the parallax image or the changing image and the image forming ink in the print range. In the bonding step, the second convex lens is orthogonal to the normal direction and the longitudinal direction of the first base material. In the orthogonal direction, the other surface side of the first base material and the other surface side of the second base material are preferably bonded so as to be provided at a position corresponding to the first convex lens.

  When configured in this way, in the image forming process, the light shielding ink adheres to the gaps where the image forming ink does not adhere, and a printed image is formed, so printing is performed from the surface side of the lens sheet body. When an image is viewed, it is possible to reduce the occurrence of a situation where the other side of the lens sheet body is seen. Therefore, the printed image becomes conspicuous, the printed print image can be emphasized, and the visibility of the printed image can be improved. Further, with this lens sheet body, since the printed image can be viewed from both the front side and the back side, it is possible to appreciate a symmetrical print image from both the front and back sides.

It is a figure explaining the manufacturing method of the lens sheet body which concerns on one embodiment of this invention. It is a figure which shows the image of the printing in a lenticular sheet. It is a figure which shows a mode when visually recognizing a lens sheet body. It is a figure which shows the image visually recognized when what was printed is a stereo image. It is a perspective view which shows the structure of a lenticular lens roughly. It is a fragmentary perspective view which expands and shows the guide part which has a recessed part and a convex part. It is a top view which shows the position of a guide part among lenticular sheets. It is a top view which shows the guide part which concerns on a modification. It is a fragmentary perspective view which expands and shows the guide part which has a linear part and a clearance gap. 1 is a block diagram illustrating a schematic configuration of a printing system. It is a figure which shows the image which forms a dot using a dither mask. It is a figure which shows the image which extracts the part which the ink for light shielding lands. It is a figure which shows a color conversion table.

  Hereinafter, a lens sheet body 10 and a method for manufacturing the lens sheet body 10 according to an embodiment of the present invention will be described with reference to the drawings. First, an outline of the invention will be described.

<1. Overview>
FIG. 1 is a diagram for explaining the configuration of the lens sheet body 10 of the present invention together with the manufacturing method thereof. In the following description, a pattern formed by ink landing by driving the print head 52 is referred to as a print image PI.

  First, as shown in FIG. 1A, a plurality of lenticular sheets 20 are prepared, and two of them are taken out. Then, as shown in FIG. 1B, of the two lenticular sheets 20, the side where the convex lens 21 does not exist (hereinafter, the side where the convex lens 21 does not exist is referred to as the back side). A right-eye and left-eye parallax image (that is, a stereoscopic print image, hereinafter referred to as a stereoscopic image) or a print image whose picture is switched depending on the viewing angle (hereinafter referred to as a changing image) is printed. That is, the print head 52 is driven to print a stereoscopic image or a changing image on the back side of one lenticular sheet 20. In the following description, when a stereoscopic image and a changing image are generically referred to as a print image PI.

  FIG. 2 is a diagram illustrating an image of printing in FIG. A range to be printed on the back surface of the lenticular sheet 20 (hereinafter referred to as a print range) is determined in advance according to image data and various settings. However, when printing is performed on commonly used paper based on image data, as shown in FIG. 2A, a portion where ink adheres and a portion which does not adhere at all occur in the printing range. . In contrast, in the present embodiment, as shown in FIG. 2B, there is no portion where no ink adheres within the printing range. That is, even in a portion where ink is not attached to a commonly used paper, in this embodiment, ink is attached so that a portion where ink is not attached as described above does not occur. That is, in FIG. 2A, the gap is filled by attaching the ink to the gap so that the gap does not remain as it is with respect to the gap where the ink does not adhere. As a result, the printing range is in a state where ink is applied to the entire surface and light is largely blocked between the front side and the back side. In the following description, the ink for filling the gap is referred to as a light shielding ink SI. The ink for forming a three-dimensional image or a changing image instead of the light-shielding ink SI corresponds to an example of the image-forming ink described in the claims.

  At this time, the above-described light-shielding ink SI is not ink for drawing the print image PI, such as white or black, but has a color that does not prevent the print image PI from conspicuous (not so conspicuous) when filling the gap. Ink. Further, the color of the light-shielding ink does not vary depending on the position within the printing range, and a specific color ink such as white or black is used. The light-shielding ink is not limited to white or black, and other colors such as gray ink can be used.

  After the above-described printing, as shown in FIG. 1C, the other lenticular sheet 20 that has not been printed is bonded to one lenticular sheet 20 using an adhesive means such as glue or adhesive. . Then, the glue or adhesive is cured to complete the lens sheet body 10. In addition, it is preferable that the glue or adhesive used for bonding is transparent and has a refractive index equivalent to that of the lenticular sheet 20. Further, when applying glue or an adhesive to at least one of the back surface of one lenticular sheet 20 and the back surface of the other lenticular sheet 20, it is not applied over the entire back surface, but is applied partially, It is preferable that the coated sites are a plurality of locations.

  The one lenticular sheet 20 described above corresponds to an example of a first lenticular sheet referred to in the claims, and the other lenticular sheet 20 corresponds to an example of a second lenticular sheet referred to in the claims. However, the other lenticular sheet 20 corresponds to an example of the first lenticular sheet referred to in the claims, and the other lenticular sheet 20 corresponds to an example of the second lenticular sheet referred to in the claims. good.

  FIG. 3 shows a state when the lens sheet body 10 formed through the above manufacturing method is visually recognized. As shown in FIG. 3, the lens sheet body 10 according to the present embodiment has a large number of convex lenses 21 arranged on both the front surface side and the back surface side. At this time, when the lens sheet body 10 is viewed in plan, the length of the convex lens 21 on the back surface side is arranged along the same direction as the length of the convex lens 21 on the front surface side. Further, the convex lens 21 on the back surface side corresponds to the position corresponding to the convex lens 21 on the front surface side (specifically, in plan view) in the orthogonal direction orthogonal to the normal direction of the base material 22 and the longitudinal direction of the convex lens 21 on the front surface side. (Sometimes overlapped position). Therefore, even when the print image PI is visually recognized from the front side of the lens sheet body 10, even when the print image PI is visually recognized from the back side of the lens sheet body 10, a desired image can be visually recognized. Specifically, when what is printed on the lens sheet body 10 is a stereoscopic image, the viewer can visually recognize a stereoscopic image based on the stereoscopic image. In addition, when the image printed on the lens sheet body 10 is a changing image, the viewer can visually recognize an image in which the picture is switched depending on the viewing angle based on the changing image.

  FIG. 4 is a diagram illustrating an image that is visually recognized by a viewer when what is printed on the lens sheet body 10 is a stereoscopic image. As shown in FIG. 4, the viewer visually recognizes the printed image PI (stereoscopic image) from the front side of the lens sheet body 10 and visually recognizes the printed image PI (stereoscopic image) from the back side of the lens sheet body 10. Compared with the case where it does, it recognizes the symmetrical image which mirrored each other (right and left reversed). However, the degree of stereoscopic vision such as depth is the same except that the left and right are reversed. The same applies to left and right reversal even for a changing image.

  Here, when printing on white or a color close to white like normal paper, it is difficult to see the other side of the paper from the unprinted portion. However, in the printing range of the transparent (having light transmittance) lens sheet body 10 as in the present embodiment, when a portion where no ink is attached is generated, the other side of the lens sheet body 10 is visible from the portion where the ink is not attached. And the visibility of the printed image PI deteriorates. In particular, the lens sheet body 10 in the present embodiment is not assumed to be viewed in a state where it is placed on an installation site such as a desk, as in normal paper, and from either the front side or the back side, It is assumed that the print image PI is viewed. Therefore, when there is a transparent portion (gap) to which ink does not adhere and the other side of the lens sheet body 10 can be seen from there, the deterioration of the visibility of the printed image PI is as in a normal paper, such as a desk. Compared with what is supposed to be seen in the state of being placed on the installation site, it becomes remarkable.

  However, as described above, the light-shielding ink SI is attached to the gap where no image forming ink is attached, so that the visibility is improved. The above is the outline of the present invention.

<2. About Lenticular Sheet 20>
Subsequently, the lenticular sheet 20 constituting the lens sheet body 10 in the present embodiment will be described in the outline described above.

(2-1) General Lenticular Sheet 20 As shown in FIG. 5, the lenticular sheet 20 includes a convex lens 21, a base material 22, and an ink absorption layer 23.

  The convex lens 21 is a cylindrical convex lens 21 whose longitudinal direction is one direction. As shown in FIG. 5, the convex lenses 21 are arranged in parallel at a constant pitch on the base material 22. In this convex lens 21, it is preferable that the curvature of the convex lens 21 is formed so that the focal point of the light traveling through each convex lens 21 is located on the back surface of the lenticular sheet 20 or the print layer formed on the back surface. . The convex lens 21 is made of PET (Polyethylene Terephtarate), PETG (Polyethylene Terephtalate Glycol), APET (Amorphous Polyethylene Terephthalate), PP (Polypropylene), PS (Polystyrene), PVC (Polyvinyl Chloride), acrylic, UV (Ultraviolet) resin, or the like. It is formed as.

  The base material 22 is formed by forming a transparent material into a thin plate shape. For example, a PET-G (Polyethylene Terephtalate Glycol) resin, a PET (Polyethylene Terephtarate) resin, or the like can be used.

  In addition, the base material 22 which exists in the one lenticular sheet 20 mentioned above respond | corresponds to an example of the 1st base material which is said in a claim, and the base material 22 which exists in the other lenticular sheet 20 is the 1st thing in a claim. This corresponds to an example of the two substrates. Further, the convex lens 21 present on one lenticular sheet 20 corresponds to an example of a first convex lens referred to in the claims, and the convex lens 21 present on the other lenticular sheet 20 is an example of a second convex lens referred to in the claims. Corresponding to However, the base material 22 present in the other lenticular sheet 20 corresponds to an example of the first base material referred to in the claims, and the base material 22 present in the one lenticular sheet 20 is referred to in the claims. It is good also as a thing corresponding to an example of 2 base materials. Further, the convex lens 21 present on the other lenticular sheet 20 corresponds to an example of the first convex lens referred to in the claims, and the convex lens 21 present on the one lenticular sheet 20 corresponds to the second convex lens referred to in the claims. It is good also as a thing corresponding to an example.

  The front surface side corresponds to an example of one surface side in the claims, and the back surface side corresponds to the other surface side in the claims. However, the back surface side may correspond to an example of one surface side in the claims, and the front surface side may correspond to the other surface side in the claims.

  The ink absorption layer 23 is a part that absorbs and / or fixes the ink that has passed through the ink transmission layer. The ink absorption layer 23 is made of, for example, a hydrophilic polymer resin such as PVA (polyvinyl alcohol), a cationic compound, fine particles such as silica, or the like.

  In the lenticular sheet 20 described above, an ink transmission layer may be provided on the back surface side (side away from the base material 22 and the convex lens 21) from the ink absorption layer 23. In this case, the ink adhering to the ink transmission layer passes through the ink transmission layer and reaches the ink absorption layer 23. Such an ink transmission layer needs to be made of a material having transparency, and for example, glass fiber, plastic fiber, or the like can be used as a material.

(2-2) About the guide part 24 Moreover, as shown in FIG.6 and FIG.7, the guide part 24 is provided in the lenticular sheet 20 in this Embodiment. The guide portion 24 is used for positioning (positioning) when the one lenticular sheet 20 and the other lenticular sheet 20 are bonded together after the print image PI is formed on the one lenticular sheet 20. As shown in FIGS. 6 and 7, the guide portion 24 is provided on the outer edge side of the lenticular sheet 20 with respect to the print region where the print image PI is formed.

  6 and 7, as an example of the guide portion 24, one having a concave portion 24a and a convex portion 24b is shown. 6 and 7, the concave portion 24a and the convex portion 24b deviate from the printing region PR of the lenticular sheet 20 (this printing region includes a printing range and indicates a region where printing can be performed to the maximum extent). It is provided at the four corners. The concave portions 24a and the convex portions 24b are provided so as to be aligned in the longitudinal direction of the convex lens 21, and any of the concave portions 24a and the convex portions 24b at the four corners has a distance to the nearest convex lens 21 in the lateral direction. Are equal. Then, for example, at one longitudinal end of the lenticular sheet 20, the lenticular sheet 20 is arranged so as to be uneven as it advances from the adjacent outer edge in the longitudinal direction to the other end side in the longitudinal direction. As it goes to one end side, it should be lined up with unevenness. In this way, accurate positioning can be performed when the lenticular sheets 20 shown in FIG. Moreover, in what is shown in FIG.6 and FIG.7, since the recessed part 24a and the convex part 24b exist two each, it becomes what is easy to align.

  However, the concave and convex guide portion 24 is not limited to that shown in FIGS. 6 and 7. For example, as shown in FIG. 8, a convex portion 24b may be provided on one side in the short direction of the lenticular sheet 20, and only a concave portion 24a may be provided on the other side in the short direction. Moreover, only the convex part 24b exists in the diagonal direction with the lenticular sheet 20, and only the recessed part 24a exists in the diagonal direction different from it. That is, as long as the alignment of the two lenticular sheets 20 can be performed by fitting the unevenness, the arrangement of the unevenness may be any. Here, the concave portion 24a and the convex portion 24b correspond to an example of a positioning portion in the claims.

  Another example of the guide portion 24 is as shown in FIG. FIG. 9 shows an example in which an alignment mark 240 is provided on the outer edge side of the lenticular sheet 20 away from the printing region PR (the same position as the guide portion 24 in FIG. 7). The marking 240 shown in FIG. 9 includes a linear portion (linear portion 241) along the longitudinal direction of the convex lens 21 and a gap 242 existing between adjacent linear portions 241. In each linear portion 241, the distance to the nearest convex lens 21 in the short direction is accurately determined to be a certain value. Then, at least two markings 240 are provided outside the printing region PR with a predetermined interval or more. As the arrangement of the markings 240 at two or more locations, for example, the marking 240 is arranged in a diagonal direction among the four corners of the lenticular sheet 20 or the short corner or the longitudinal direction is arranged in the four corners of the lenticular sheet 20. Some have two. Of course, the arrangement of the plurality of markings 240 is not limited to this, and various arrangements are possible.

  The linear portion 241 and the gap 242 correspond to an example of the positioning portion referred to in the claims, but only the linear portion 241 may correspond to an example of the positioning portion referred to in the claims. It is good also as a thing corresponding to an example of a part.

  Positioning when the lenticular sheet 20 on which such a marking 240 is formed is pasted is performed as follows. That is, the two markings 240 are overlapped so that they are seen from directly above the front side or the back side. At this time, any of the plurality of linear portions 241 is overlapped with the linear portion 241 of the marking 240 existing on the lenticular sheet 20 to be overlapped. In that case, the two markings 240 to be overlaid are in almost the same position in the thickness direction of the lenticular sheet 20. For this reason, when the linear parts 241 of the two overlapping markings 240 are slightly shifted, the thickness is visually recognized so as to increase. Therefore, if the position of the lenticular sheet 20 is finely adjusted so that the thickness of the two linear portions 241 that are overlapped becomes the smallest, the alignment between the lenticular sheets 20 can be accurately performed.

  Although it is possible to perform alignment when the marking 240 is formed by the method as described above, the marking 240 is not limited to that shown in FIG. For example, a circular ring-shaped marking is applied to one of the four corners of one lenticular sheet 20, and the ring-shaped marking is placed on a portion of the four corners of the other lenticular sheet 20 that is overlapped with the ring-shaped marking (large-diameter marking). A smaller-diameter circular ring-shaped or circular-shaped marking (small-diameter marking) located inside the marking is provided. Then, when one lenticular sheet 20 and the other lenticular sheet 20 are overlapped, a gap is formed between the large diameter marking and the small diameter marking. However, if a positional shift occurs, any position in the circumferential direction becomes narrow in the gap. Therefore, if the fine adjustment is performed so that the gap between the large-diameter marking and the small-diameter marking becomes uniform at any position in the circumferential direction, accurate alignment between the lenticular sheets 20 can be performed.

  That is, when marking is formed on the lenticular sheet 20, any marking can be used as long as the relative positional deviation of the other marking can be detected with respect to one marking when the markings are overlapped with each other. May be formed.

(2-3) Other lenticular sheet 20 The lenticular sheet 20 is not limited to the lenticular sheet 20 shown in FIG. For example, it is good also as what has only the convex lens 21 and the base material 22 among the lenticular sheets 20 shown in FIG. 5 mentioned above. Here, the convex lens 21 and the base material 22 do not need to be integral, and may be separated. In this case, the lenticular sheet 20 may be formed by bonding a plurality of convex lenses 21 to the base material 22.

  Further, as shown in FIG. 5, when the convex lens 21 is continuous, only the convex lens 21 may be provided. In these cases, ink adheres to the back surface of the lenticular sheet 20 (the surface opposite to the side where the convex lens 21 is located), but the ink does not soak into the lenticular sheet 20. However, it is also possible to use an ink containing a component that is cured by applying heat or irradiating ultraviolet rays, for example. When such an ink is used, it is possible to cure the ink by applying heat or irradiating ultraviolet rays after the ink is attached, and a good printed image PI can be obtained. Of course, the lenticular sheet 20 other than that shown in FIG.

<3. Printing System 30 for Forming Print Image PI on Lenticular Sheet 20 and Data Processing>
Next, the printing system 30 and data processing for forming the above-described print image PI on the lenticular sheet 20 will be described.

(3-1) Configuration of Printing System 30 FIG. 10 is a block diagram showing a schematic configuration of a printing system according to an embodiment of the present invention. The printing system 30 includes a computer 40 and a printer 50, and the printer 50 is connected to the computer 40. However, each function of the computer 40 may be incorporated in the printer 50.

  In FIG. 10, a computer 40 includes a CPU 41, a RAM 42, a ROM 43, an external storage device 44, an external interface 45, a video interface 46, an input interface 47, and a bus 48. The bus 48 realizes data communication between the elements 41 to 47 constituting the computer 40, and communication is controlled by a chip set (not shown). The external storage device 44 stores various programs and data including an operating system (OS), and includes an application program 44a and a printer driver program 44b. Then, the CPU 41 executes an operation according to the program and data while expanding the program and data stored in the external storage device 44 such as an HDD and a flash memory in the RAM 12.

  The external interface 45 is connected to an external device such as a printer or a network, receives print data and control data from the external device, and notifies various data to the external device. As such an external interface 45, there exists a thing based on USB specification, for example. The video interface 46 is an interface for connecting the computer 40 to an external display 60 and displaying an image on the display 60. The input interface 47 is an interface for connecting the computer 40 to input means such as an external keyboard 70 and a mouse 80, and for the computer 40 to acquire input signals from these input means.

  The application program 44a inputs image data from a scanner device, a digital camera, etc. (not shown) through the external interface 45, for example. The application program 44a in the present embodiment subdivides a plurality of image data in accordance with the pitch of the convex lens 21 and rearranges the subdivided ones in order to create a stereoscopic image or changing image on the lenticular sheet 20. In addition, it is a program for creating composite image data for stereoscopic images or changing images. The application program 44a displays an image represented by the composite image data on the display 60 via a video driver (not shown). Further, the application program 44a outputs the composite image data to the printer 50 via the printer driver program 44b.

  The printer driver program 44b includes an image acquisition module 441, a color conversion module 442, a halftone module 443, and a print data output module 444. In addition, the printer driver program 44b has a color conversion table LUT and a dither mask D as data. doing. The image acquisition module 441 acquires image data (composite image data) to be printed from the application program 44a. The color conversion module 442 refers to the color conversion table LUT prepared in advance, and the color components (for example, cyan (C), magenta (M), Yellow (Y) and black (K).

  The halftone module 443 performs halftone processing in which the image data after color conversion is represented by a binarized or multivalued dot distribution. In this embodiment, a systematic dither method using a dither mask D is performed as the halftone process.

  The print data output module 444 rearranges the data representing the dot arrangement of each color obtained by the halftone process in accordance with the dot formation order by the print head 52 of the printer 50 and outputs the data to the printer 50 as print data.

  Further, the printer 50 is provided with a control circuit 51 and a print head 52. The control circuit 51 creates a drive signal for driving the print head 52 based on the print data received from the print data output module 444. Based on this drive signal, the print head 52 is controlled and driven, and ink can be ejected onto the lenticular sheet 20 to form a desired print image PI. The print head 52 may be capable of forming dots of a plurality of types of sizes by ejecting a plurality of types (large, medium, and small) of ink droplets having different ink amounts.

  The print head 52 can eject at least the cyan ink (C), the magenta ink (M), the yellow ink (Y), and the black ink (K). However, other intermediate color inks or white inks may be ejected.

(3-2) Data Processing Next, data processing (image processing) for forming a print image PI as shown in FIGS. 1 and 2 will be described.

  When the image acquisition module 441 receives RGB color system composite image data from the application program 44a, color components (for example, cyan (C)) that can be printed by the printer 50 by the color conversion module 442 after predetermined processing such as resolution conversion. , Magenta (M), yellow (Y), and black (K)).

  Thereafter, the halftone module 443 refers to the image data represented by the CMYK color system by dithering as described later, with reference to the color conversion table LUT, for example, for three types of dots of large, medium, and small. Convert to bitmap data consisting of combinations.

  FIG. 11 shows an image of dither processing using the dither mask D. In the halftone process, the numerical value (threshold value) of each pixel of the dither mask is converted into each color component such as cyan ink (C), magenta ink (M), yellow ink (Y), and black ink (K). The gradation value of each color component of the intermediate data is individually compared. In this comparison, when the threshold value of the dither mask is smaller than the gradation value of each pixel of the intermediate data of each color component, the dot is turned off (shaded portion in FIG. 11), and conversely, the dot is exceeded. Is turned on (outlined portion in FIG. 11). In this way, in the halftone process, binarized information (binarized data) of only dot on / off is obtained for each color.

  By the way, in order to eject the above-described light-shielding ink SI, a portion where dots of each color component of cyan ink (C), magenta ink (M), yellow ink (Y), and black ink (K) are not formed is grasped. Need to (extract). For this reason, in the present embodiment, processing as shown in FIG. 12 is performed.

  In FIG. 12, in the binarized data of each color such as cyan (C), magenta (M), yellow (Y), and black (K), all the portions corresponding to the respective pixels are dots off. Whether or not is determined. Assuming that the dot off is “0” and the dot on is “1”, if it is determined that all the pixels are “0” indicating dot off, any color is displayed in that pixel. It is determined that a gap is formed without adhering the component ink, and in this case, the light-shielding ink SI is landed on the print site corresponding to the pixel. That is, dot formation with the light-shielding ink SI is turned on. Conversely, in each pixel, if it is determined that “1” representing dot ON exists in any color component, ink of any color component will adhere to that pixel. It is determined that no gap is formed. In that case, the light-blocking ink SI is not landed on the print site corresponding to the pixel.

  In this way, the ink adheres over at least the entire print range in the print region PR, and no gap is formed in which the ink does not adhere. The ink is applied to the entire surface of the print range, and the front side and the back side. Between, the light is greatly blocked.

  In the present embodiment, the color conversion table LUT is set so that the amount of ink ejected in each pixel increases, and the amount of ink attached to the printing range is increased to improve the light shielding property. In FIG. 13, the color conversion table LUT to be printed on a normal sheet is indicated by a broken line, and the color conversion table LUT for improving the light shielding property in the present embodiment is indicated by a solid line. Referring to the color conversion table LUT indicated by the solid line in FIG. 13, the amount of ink ejected is large even with pixels having the same tone as when printing on normal paper (shown by the broken line in FIG. 13). The probability of becoming higher.

  Thereafter, the print data output module 444 generates print data rearranged in accordance with the dot formation order by the print head 52 from the bitmap data subjected to the halftone process.

<4. Effects in the present embodiment>
According to the lens sheet body 10 and the manufacturing method of the lens sheet body 10 configured as described above, the print image PI is formed by attaching the light-shielding ink SI to the gap portion where the image forming ink is not attached. Therefore, when the print image PI is viewed from the front surface side of the lens sheet body 10, it is possible to reduce the occurrence of a situation where the other side of the lens sheet body 10 is visible. Therefore, the print image PI becomes conspicuous, the printed print image PI can be emphasized, and the visibility of the print image PI can be improved. Further, in the lens sheet body 10, since the print image PI can be viewed from both the front side and the back side, it is possible to appreciate the symmetrical print image PI from both the front and back sides.

  When a stereoscopic image is formed using the invention in the present embodiment, for example, only a person or an item is popped out by a show window or the like, and characters and the like are provided outside the range of the convex lens 21. In this way, a person, an article, characters, and the like can be shown separately, thereby enabling an image display with excellent visibility while being cheaper than a normal stereoscopic image display. In addition, the way of showing as described above is not limited to a show window. For example, the present invention can be applied to various places such as a small window of a building or a car window to make the same way of showing. .

  Further, in the present embodiment, the presence of the guide portion 24 makes it possible to accurately perform positioning between one lenticular sheet 20 and the other lenticular sheet 20. Thereby, the bonding between one lenticular sheet 20 and the other lenticular sheet 20 can be performed accurately without misalignment.

  Furthermore, as shown in FIGS. 6-8, when the guide part 24 has the recessed part 24a and the convex part 24b, the recessed part 24a and the convex part 24b in one lenticular sheet 20, and the convex part in the other lenticular sheet 20 are shown. By fitting the 24b and the recess 24a, positioning between one lenticular sheet 20 and the other lenticular sheet 20 can be performed accurately. Further, since positioning is performed by fitting the unevenness, it is possible to improve the positioning work.

  As shown in FIG. 9, when the guide part 24 is the marking 240, the linear part 241 in one lenticular sheet 20 and the linear part 241 in the other lenticular sheet 20 overlap each other. Thereby, accurate positioning between one lenticular sheet 20 and the other lenticular sheet 20 can be performed by a change in thickness due to a change in position of the overlapping portion of the linear portions 241.

<5. Modification>
Although one embodiment of the present invention has been described above, the present invention can be variously modified. This will be described below.

(5-1) Modification 1
In the above-described embodiment, printing is performed only on one lenticular sheet 20. However, (1) half of the printed image is printed on one (front side) lenticular sheet 20, (2) the other half (back side) lenticular sheet is printed with the other half of the printed image inverted, and (3 ) The front and back lenticular sheets may be bonded together so that the boundary is connected cleanly. Even such a lens sheet body has the same visibility as the lens sheet body 10 in the above-described embodiment, and therefore, the same effect as the lens sheet body 10 described above can be obtained. .

  If a continuous print image is formed inside the lens sheet body 10 by pasting, the print image formation area is half of the print image on one (front side) lenticular sheet 20; The other (back side) lenticular sheet is not limited to the remaining half of the printed image, but a part of the printed image (one or a plurality of places) may be placed on one (front side) lenticular sheet. You may make it form in the lenticular sheet of the other (back side) which formed in the sheet | seat 20, and reversed the remaining part except a part from the printing image.

(5-2) Modification 2
Moreover, in the above-mentioned embodiment, what is shown in FIGS. 6-9 is shown as a guide part. However, the guide portion is not limited to those shown in FIGS. For example, a jig that sandwiches two lenticular sheets 20 in a stacked state may be used. As such a jig, for example, (1) a sandwiching portion that is lightly sandwiched in a state where the back sides of the two lenticular sheets 20 are in contact with each other, and (2) it can be moved toward the back side by screwing from the front side or the like. A tip-shaped positioning member, (3) A tip-shaped positioning member that can be moved toward the front side by screwing from the back side, etc. (4) The tip of each positioning member abuts each other Some have the element that it is possible. When this jig is used, it is possible to accurately align the two lenticular sheets 20 if the pointed tip portions of the front and back positioning members are positioned between the valleys of the adjacent convex lenses 21. is there.

(5-3) Modification 3
In the above-described embodiment, the print image is formed on the back surface of one lenticular sheet 20. However, for example, a printing image is formed in advance on a printing member different from the lenticular sheet such as a transparent film, and the lenticular sheet 20 is formed on the front side and the back side of the printing member with respect to the printing image. The alignment may be performed after the alignment. Even if it does in this way, since the visibility is equivalent to the lens sheet body 10 in the above-mentioned embodiment, it is possible to obtain the same effect as the lens sheet body 10 mentioned above.
(5-4) Modification 4

  In the embodiment described above, a print image is formed by the printer 50 having the print head 52. However, the print image is not limited to that formed by the printer 50, and may be formed by means different from the printer 50 such as a copying machine.

(5-5) Modification 5
Further, in the above-described embodiment, the concept of the printer 50 includes fluids such as liquids other than ink (liquids themselves, liquids obtained by dispersing or mixing functional material particles in liquids, gels, and the like. It is also possible to include a fluid ejecting apparatus that ejects or injects (including a material having a material). As such, a liquid containing a material such as an electrode material or a color material (pixel material) used for manufacturing a liquid crystal display, an EL (electroluminescence) display, and a surface emitting display is dispersed or dissolved. There are a liquid ejecting apparatus, a fluid ejecting apparatus that ejects a bio-organic matter used for biochip manufacturing, a fluid ejecting apparatus that ejects a liquid that is used as a precision pipette and serves as a sample.

(5-6) Modification 6
Further, the concept of the printer 50 of the present invention includes a micro hemispherical lens (optical lens) used for a fluid ejecting apparatus, an optical communication element, and the like that ejects lubricating oil pinpoint to a precision machine such as a watch or a camera. A fluid ejecting apparatus that ejects a transparent resin liquid such as an ultraviolet curable resin onto a substrate to form a substrate, a fluid ejecting apparatus that ejects an etchant such as an acid or an alkali to etch the substrate, etc., a gel (for example, a physical gel ) And the like.

  DESCRIPTION OF SYMBOLS 10 ... Lens sheet body, 20 ... Lenticular sheet (corresponding to an example of a first lenticular sheet or an example of a second lenticular sheet), 21 ... Convex lens (corresponding to an example of a first convex lens or an example of a second convex lens) , 22 ... base material (corresponding to an example of the first base material or an example of the second base material), 23 ... ink absorbing layer, 24 ... guide part, 24a ... concave part (corresponding to an example of positioning part), 24b ... Convex part (corresponding to an example of a positioning part), 30 ... printing system, 40 ... computer, 41 ... CPU, 42 ... RAM, 43 ... ROM, 44a ... application program, 44b ... printer driver program, 44 ... external storage device, 45 ... external interface, 46 ... video interface, 47 ... input interface, 48 ... bus, 50 ... pre 51 ... control circuit, 52 ... print head, 60 ... display, 70 ... keyboard, 80 ... mouse, 240 ... marking (corresponding to an example of positioning part), 241 ... linear part (corresponding to an example of positioning part), 242 ... Gap, (corresponding to an example of a positioning unit), 441 ... Image acquisition module, 442 ... Color conversion module, 443 ... Halftone module, 444 ... Print data output module, D ... Dither mask, LUT ... Color conversion table, PI ... Printed image, PR ... Print area, SI ... Light shielding ink

Claims (5)

Each of the first convex lenses on the other surface side of the first base material is disposed on one surface side of the first base material having optical transparency, the first convex lens having one direction as a longitudinal direction. A lens sheet body in which a parallax image for the right eye and a left eye, or a changing image in which a pattern is switched depending on a viewing angle, is formed at a position corresponding to
On the other surface side, a second base material having light permeability and a second convex lens are arranged,
The second convex lens is formed at the same lens pitch as the first convex lens,
The longitudinal length of the second convex lens is arranged along the same longitudinal direction as the longitudinal length of the first convex lens,
The second convex lens is provided at a position corresponding to the first convex lens in a normal direction of the first base material and an orthogonal direction orthogonal to the longitudinal direction.
The print image includes an image forming ink for forming the parallax image or the changing image, and a light shielding ink for light shielding in a portion of the printing range where the image forming ink is not attached. Formed by adhering to the first substrate or the second substrate ;
A lens sheet body, wherein the light-shielding ink is attached to a portion of the base material to which any of the inks adheres, to which the image forming ink does not adhere . The lens sheet body according to claim 1,
A guide portion is provided on an outer edge side out of the printing range of the other surface side of the first base material and the second base material, and the guide portion includes the first base material and A positioning unit is provided for positioning between the first lenticular sheet having the first convex lens and the second lenticular sheet having the second base material and the second convex lens.
A lens sheet body characterized by that. The lens sheet body according to claim 2,
The guide portion includes a recess recessed from the other surface side of the first base material and the second base material toward one surface side, and the first base material and the second base material. A convex portion projecting in a direction away from the other surface side;
Have
The concave portion and the convex portion in the first base material and the convex portion and the concave portion in the second base material are fitted to each other, so that the gap between the first lenticular sheet and the second lenticular sheet is between Positioning is done,
Lens sheet body characterized by that The lens sheet body according to claim 2,
The guide portion is a marking formed on the other surface of the first base material and the second base material, and the marking has a linear portion along the longitudinal direction, and the linear portion Are arranged at predetermined intervals across the gap along the orthogonal direction,
Between the first lenticular sheet and the second lenticular sheet, the linear portion of the first base material and the linear portion of the second base material are overlapped with each other. Positioning is done,
A lens sheet body characterized by that. A method for producing a lens sheet body in which a first convex lens having one direction as a longitudinal direction is arranged on one surface side of a first base material having light transmittance,
An image forming step of forming a parallax image for right eye and left eye, or a changing image in which a picture is switched according to a viewing angle at a position corresponding to each of the first convex lenses on the other surface side of the first substrate; ,
On the other surface side, a second convex lens is mounted and a light-transmitting second base material, and the other surface side of the second base material on which the second convex lens is not mounted is A bonding step of bonding in a state facing the other surface side of the first substrate;
Have
The second convex lens is formed at the same lens pitch as the first convex lens,
When viewed in a plan view, the second convex lens is arranged so that the length of the second convex lens is along the same longitudinal direction as the length of the first convex lens,
The printed image formed by the image forming process is configured to block light from forming an image forming ink for forming the parallax image or the changing image and a portion of the printing range where the image forming ink is not attached. Is formed by adhering to the first substrate or the second substrate .
In the base material to which any ink is attached, the light-shielding ink is attached to a portion where the image forming ink is not attached,
In the bonding step, the first convex lens is provided at a position corresponding to the first convex lens in a normal direction of the first base material and an orthogonal direction orthogonal to the longitudinal direction. The other surface side of the base material of this and the other surface side of the said 2nd base material are bonded together. The manufacturing method of the lens sheet body characterized by the above-mentioned.

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