JP4039422B2 - Print media - Google Patents

Description

  The present invention relates to a print medium.

Conventionally, as a stereoscopic image, a plurality of images taken from a plurality of directions are combined in a stripe shape, and the back surface of a lenticular sheet (printing medium, that is, a printing medium) in which a plurality of columnar aspherical lenses are arranged on the surface. A stereoscopic image for stereoscopic viewing is widely known by observing a recorded parallax image from the surface side of the lenticular sheet through the columnar aspherical lens of the lenticular sheet and separately with left and right eyes.
In addition to the stereoscopic image described above, when a plurality of different images are converted into parallax images and recorded according to the observation direction, different images can be observed depending on the observation direction.
In addition to the above lenticular sheet, there is also a stereoscopic image obtained by using a technique called integral photography using a plurality of convex lenses arranged in a plane (a fly-eye lens).

These three-dimensional images are obtained by disposing parallax images at positions corresponding to each of a plurality of lenses composed of columnar aspherical lenses or eyelet lenses, and have different colors for both eyes. It has the advantage that it is not necessary to see through special glasses such as spectacles.
However, if the positional relationship of the parallax images with respect to the plurality of lenses is not accurate, a parallax image of a stereoscopic image with different left and right eyes will be observed, and there is a possibility that an accurate stereoscopic image or image cannot be observed. Therefore, a technique for printing parallax images in an accurate positional relationship with respect to a plurality of lenses has been proposed (see, for example, Patent Documents 1 and 2).
JP 7-281327 A Japanese Patent No. 3420394

  In Patent Document 1, the back surface of the lenticular lens is formed into a convex curved surface with the same pitch as the arrangement pitch of columnar aspherical lenses (hereinafter referred to as lenticular lenses), and an ink absorbing layer is also formed on the back surface. It was. In other words, printing the parallax image on the ink absorption layer of the lenticular lens and detecting the position of the convex curved surface with a sensor eliminates the factors that shift the position of the parallax image with respect to multiple lenses and prints in an accurate positional relationship. Was.

  Similarly, in Patent Document 2, ribs are formed on the back surface of the lenticular lens at the same pitch as the arrangement pitch of the lenticular lenses, and an ink jet recording layer that absorbs ink is also formed on the back surface. In other words, printing a parallax image on the inkjet recording layer of a lenticular lens and detecting the position of the rib with a sensor eliminates the factors that shift the position of the parallax image with respect to a plurality of lenses, and prints in an accurate positional relationship. It was.

  However, in the method of printing directly on the lenticular sheet, even if a coating such as an ink absorbing layer or an ink jet recording layer is applied to the lenticular sheet made of a resin, the printed ink is not sufficiently absorbed into the ink absorbing layer, There is a problem that the quality of the parallax image is not sufficient.

  In addition, if the object to be printed is printed on paper or the like in order to ensure the quality of the parallax image, the position of the parallax image with respect to a plurality of lenses may not be accurate, and an accurate stereoscopic image or image may not be observed. It was.

  The present invention has been made to solve the above problems, and provides a print medium capable of improving the quality of a parallax image and printing the parallax image in an accurate positional relationship with a lens. Objective.

  To achieve the above object, a first print medium of the present invention has a print surface on which an image is printed and a surface on which lenses are arranged, and the print medium for observing a print image through the arranged lenses. In the printing, at least a part of the arranged lenses is arranged on the same side as the printing surface.

  That is, the first print medium of the present invention can print an image based on the shape of the lens arranged on the same side as the printing surface, the arrangement interval, and the like. Therefore, the image can be printed at an accurate position with respect to the lens. After printing, an image printed at an accurate position can be observed through the lens. Furthermore, when a lens is arranged on the printed image, the printed image can be protected by the lens, and the quality can be improved. In addition, when a lens is placed on a surface other than the printing surface, nothing is placed on the printing surface, so it becomes easier to protect the printed image with a protective member such as a protective sheet, improving quality. Is easy to plan.

  In order to achieve the above object, a second printing medium of the present invention includes a printing substrate having a printing surface on which an image is printed, and a lens sheet in which lenses are arranged on one surface, and printing. The surface on which the printing surface of the substrate is provided and the other surface of the lens sheet are fixed to each other at least in a region, and when printing an image on the printing surface, at least a region of the printing substrate It is desirable that at least one of the lens sheet and at least a part of the lens sheet be relatively moved to expose the printing surface.

That is, since the second printing medium of the present invention includes a printing substrate having a printing surface and a lens sheet, respectively, it is easy to ensure the absorption of printing ink on the printing surface, and the quality of the printed image is improved. It can be improved easily.
Further, when printing an image on the printing substrate, since at least a part of the printing substrate and at least a part of the lens sheet are relatively moved to expose the printing surface, the lens sheet An image can be printed on the printing surface without interference.
In addition, since the printing base material and the lens sheet are fixed in a part of the region, the positional relationship does not change before and after printing the image. Furthermore, even if the exposed printing surface is covered again with a lens sheet, the relative positional relationship between the printing substrate and the lens sheet does not change. As a result, the image can be printed in an accurate positional relationship with the lens.

In order to realize the above configuration, more specifically, at least one of the printing base material and the lens sheet is formed with a rotating portion that relatively moves the printing base material and the lens sheet to expose the printing surface. It is desirable.
According to this configuration, since the rotation part is formed on at least one of the printing base material or the lens sheet, the printing base material and the lens sheet can be relatively moved from the rotation part, and the printing surface can be more reliably formed. Can be exposed.

More specifically, in order to realize the above-described configuration, it is desirable that the rotating part is a folded part that is formed in the remaining region of the lens sheet and bends the lens sheet to one surface side.
According to this configuration, the lens sheet can be bent to one surface side from the folded portion formed in the remaining region of the lens sheet. Therefore, when printing an image on a printing substrate, the lens sheet can be folded to expose the printing surface, and the image can be printed. Moreover, since the printing base material and the lens sheet are bonded together in a part of the region, the positional relationship does not change before and after printing the image. Furthermore, the positional relationship does not change even if the bent lens sheet is bonded to the printing substrate. As a result, the image can be printed in an accurate positional relationship with the lens.

More specifically, in order to realize the above configuration, the remaining area of the lens sheet is divided by at least one cut, and a part of the divided lens sheet is fixed to the printing substrate. Is desirable.
According to this configuration, since some of the lens sheets are fixed to the printing substrate in advance, when printing an image on the printing surface, the printing position of the image is determined based on the lens arrangement of the some lens sheets. be able to. As a result, the image printing position and the lens position can be made more accurate.

In order to implement | achieve said structure, more specifically, fixation of a printing base material and a lens sheet in a one part area | region may be fixed by the fixing member.
According to this configuration, the printing substrate and the lens sheet can be easily fixed by using the fixing member for fixing the printing substrate and the lens sheet in a partial region.

In order to implement | achieve said structure, more specifically, fixation with a printing base material and some lens sheets may be fixed by the fixing member.
According to this configuration, it is possible to easily fix the printing substrate and the part of the lens sheet by using the fixing member.

In order to implement | achieve said structure, the fixing member may be provided in the other surface of the lens sheet more specifically.
According to this configuration, by providing the fixing member on the other surface of the lens sheet, the printing substrate and the lens sheet can be easily fixed.
Moreover, since the fixing surface is not provided in the printing surface of a printing base material, it can prevent that the quality of the image printed on a printing surface falls.

In order to implement | achieve said structure, the fixing member may be provided in the edge part of the printing surface of a printing base material more specifically.
According to this configuration, by providing the fixing member at the edge of the printing surface of the printing substrate, the printing substrate and the lens sheet can be easily fixed.
In addition, since the fixing member is provided only at the edge of the printing surface, there is no influence of the fixing member on the central portion of the printing surface on which most images are printed, and the image quality deteriorates. Can be prevented.

In order to realize the above configuration, more specifically, the fixing member may be glue or double-sided tape.
According to this configuration, the printing substrate and the lens sheet can be easily fixed by using glue or double-sided tape as the fixing member.

In order to implement | achieve said structure, the bonding of a printing base material and a lens sheet in a one part area | region may be bonded by the pin more specifically.
According to this configuration, since the bonding of the printing substrate and the lens sheet in some regions is performed using the pins, the printing substrate and the lens sheet can be bonded more firmly. .

Hereinafter, the lenticular sheet according to the present invention will be described with reference to FIGS.
FIG. 1 is an exploded perspective view of a lenticular sheet according to the present invention.
As shown in FIG. 1, a lenticular sheet (print medium) 10 includes a printing paper (printing base material) 20 on which a parallax image is printed, and a lenticular lens (lens) that is a columnar aspherical lens (cylindrical lens). ) 31 and a lens sheet 30 formed with a plurality of lenses 31.

  The printing paper 20 has a printing surface 21 on which a parallax image is printed with ink. As the printing paper 20, a sheet used for known printing such as a photo paper or an OHP film can be used.

FIG. 2 is a plan view of a lens sheet according to the present invention.
As shown in FIGS. 1 and 2, the lens sheet 30 has a plurality of lenticular lenses 31 provided on substantially the entire surface of which the longitudinal axis direction (direction of arrow A in FIG. 1) is arranged in parallel and at equal intervals. In the vicinity of one side, a pasting portion (partial region) 32 where the lenticular lens 31 is not formed is formed. The region where the lenticular lens 31 is formed is a center observation lens sheet 34 and detection on both sides of the observation lens sheet 34 by two notches 33 formed in a direction substantially perpendicular to the lenticular lens 31. It is divided into a lens sheet (a part of the lens sheet) 35. Therefore, the shape, arrangement position, and arrangement pitch of the lenticular lenses 31 in the observation lens sheet 34 and the detection lens sheet 35 are exactly the same.
Note that two notches 33 may be formed as described above, or only one may be formed. In this case, the area of the observation lens sheet 34 can be increased, and the printable area of the parallax image with respect to the lenticular sheet 10 can be increased.

A folding part (rotating part) 36 substantially parallel to the lenticular lens 31 is formed between the pasting part 32 and the observation lens sheet 34 in order to bend the observation lens sheet 34 toward the lenticular lens 31 side. Yes.
Note that the lenticular lens 31 may not be formed on one surface of the attaching portion 32 as described above, or the lenticular lens 31 may be formed. In this case, the lenticular lens 31 can be easily manufactured and the lenticular sheet 10 can be easily manufactured.

The other surface of the lens sheet 30 on which the lenticular lens 31 is not formed is formed in a flat shape so as to be in close contact with the printing paper 20, and a double-sided tape (fixing member) 37 for bonding to the printing paper 20 is provided. ing.
As described above, the double-sided tape 37 may be provided on the lens sheet 30 and bonded to the printing paper 20, or glue may be provided instead of the double-sided tape 37 and bonded to the printing paper 20. Further, instead of providing the double-sided tape 37 on the lens sheet 30, as shown in FIG. 4, the double-sided tape 37 may be provided on the edge of the printing paper 20, or glue may be provided on the edge of the printing paper 20. . Glue or double-sided tape is provided only at the edge of the print surface, so the center of the print surface on which most images are printed is not affected by glue or double-sided tape, reducing image quality Can be prevented.

FIG. 3 is a perspective view of a lenticular sheet according to the present invention.
The printing paper 20 is arranged so that the printing surface 21 faces the lens sheet 30, and the lens sheet 30 is arranged so that the other surface on which the lenticular lens 31 is not formed faces the printing paper 20.
As shown in FIG. 1, the printing paper 20 and the lens sheet 30 are pasted together in the pasting portion 32 and the detection lens sheet 35. As shown in FIG. 3, the observation lens sheet 34 is bent from the folded portion 36 toward the lenticular lens 31, and the central portion of the printing surface 21 of the printing paper 20 is exposed.

Next, the effect | action in the lenticular sheet | seat 10 which consists of said structure is demonstrated.
FIG. 5 is a cross-sectional view illustrating a method for printing a lenticular sheet according to the present invention.
Printing on the lenticular sheet 10 described above is performed based on the following procedure. First, as shown in FIG. 1, the lenticular sheet 10 is formed by bending the observation lens sheet 34 of the lens sheet 30 toward the lenticular lens 31 and exposing the printing surface 21 as shown in FIG. It is set in the printing apparatus 40 using the method.
Thereafter, the printing apparatus 40 uses the sensor 41 provided in the printing apparatus 40 to arrange the arrangement position of the lenticular lens 31 on at least one of the detection lens sheets 35 arranged on both sides of the printing surface 21. Is detected.

The printing apparatus 40 prints a parallax image by ejecting printing ink onto the printing surface 21 based on the arrangement position information of the lenticular lens 31 detected by the sensor 41.
When the parallax image is printed on the printing surface 21, the lenticular sheet 10 is removed from the printing apparatus 40. Then, the observation lens sheet 34 of the lens sheet 30 that has been bent toward the lenticular lens 31 is stretched, and the double-sided tape provided on the lens sheet 30 with the printing surface 21 and the observation lens sheet 34 of the lens sheet 30 provided. In step 37, the lenticular sheet 10 is printed.

  According to the above configuration, since the printing paper 20 and the lens sheet 30 for printing an image are provided, it is easy to ensure the absorption of the printing ink on the printing surface 21 of the printing paper 20, and the lenticular sheet 10 The quality of the printed image can be easily improved.

Further, the printing paper 20 and the lens sheet 30 are pasted together by the pasting part 32, and the observation lens sheet 34 can be bent from the folding part 36 toward the lenticular lens 31 side. Therefore, when a parallax image is printed on the printing paper 20, as shown in FIG. 3, the observation lens sheet 34 can be folded to expose the printing surface 21 and the parallax image can be printed on the printing surface 21.
Moreover, since the printing paper 20 and the lens sheet 30 are bonded together by the bonding unit 32, the positional relationship does not change before and after the parallax image is printed. Further, even if the observation lens sheet 34 is bonded to the printing paper 20, the positional relationship does not change. As a result, the parallax image can be printed in an accurate positional relationship with the lens sheet 30.

  Since the detection lens sheet 35 is bonded to the printing paper 20 in advance, when the parallax image is printed on the printing surface 21, the print position of the parallax image can be determined based on the lens arrangement of the detection lens sheet 35. As a result, the printing position of the parallax image and the position of the lenticular lens 31 can be made more accurate.

  By using gluing or double-sided tape 37 for bonding the printing paper 20 and the lens sheet 30 in the bonding unit 32, the printing paper 20 and the lens sheet 30 can be easily bonded together. In addition, the printing paper 20 and the detection lens sheet 35 can be easily bonded together by pasting or using the double-sided tape 37 to bond the printing paper 20 and the detection lens sheet 35 together.

  By providing the adhesive or double-sided tape 37 on the surface of the lens sheet 30 where the lenticular lens 31 is not formed, the printing paper 20 and the lens sheet 30 can be bonded easily. Further, since the printing surface 21 of the printing paper 20 is not provided with the glue or the double-sided tape 37, it is possible to prevent the quality of the image printed on the printing surface 21 from being deteriorated.

  Since the detection lens sheets 35 are arranged on both sides of the printing surface 21, when a parallax image is printed on the printing surface 21, the arrangement position and the arrangement pitch of the lenticular lens 31 from either of the detection lens sheets 35 on both sides. Can be detected. Therefore, printing can be started from both detection lens sheets 35, and the printing speed can be improved.

  Note that the bonding of the printing paper 20 and the lens sheet 30 in the bonding unit 32 may be performed by using glue or a double-sided tape as described above, or in the bonding unit 32 as illustrated in FIG. The printing paper 20 and the lens sheet 30 may be bonded together using the pins 51. In this case, the bonding strength between the printing paper 20 and the lens sheet 30 is improved, and the printing paper 20 and the lens sheet 30 are effectively prevented from being peeled before the parallax image is printed on the printing paper 20. Can do.

The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, in the embodiment described above, the lens sheet 30 is described as being adapted to the configuration in which the lenticular lens 31 is disposed. However, the lens sheet 30 is not limited to the lens sheet 30 in which the lenticular lens 31 is disposed. It can be applied to a lens sheet using various other lenses such as a lens sheet.

It is a disassembled perspective view which shows one Embodiment of the lenticular sheet by this invention. It is a top view which shows the lens sheet of a lenticular sheet. It is a perspective view showing one embodiment of the lenticular sheet. It is a disassembled perspective view which shows the modification of embodiment of a lenticular sheet. It is sectional drawing explaining the effect | action of a lenticular sheet. FIG. 6 is an exploded perspective view showing another embodiment of the lenticular sheet.

Explanation of symbols

10 ... Lenticular sheet (printing medium), 20 ... Printing paper (printing substrate), 21 ... Printing surface, 30 ... Lens sheet, 31 ... Lenticular lens (lens), 32 .. Affixing part (partial area), 33 ... notch 35 ... detection lens sheet (partial lens sheet), 36 ... folding part (rotating part), 37 ... double-sided tape (Fixing member), 51 ... pin

Claims (11)

A printing medium having a printing surface on which an image is printed and a surface on which lenses are arranged, and observing the printed image through the arranged lenses,
During printing, a part of the printing surface is exposed, and at least a part of the arranged lenses is arranged on the same side as the exposed printing surface as a lens sheet for detection ,
The detection lens sheet detects arrangement position information of the lens of the detection lens sheet using a sensor included in a printing apparatus that prints the image, and determines a print position of the image based on the detected arrangement position information. A print medium characterized by being used for determination . A printing substrate having a printing surface on which an image is printed, and a lens sheet in which lenses are arranged on one surface;
Before printing the image on the printing surface and the printing at the pasting portion in which the surface of the printing substrate on which the printing surface is provided and the other surface of the lens sheet is at least a part of the region. Fixed to each other so that the positional relationship between the printing substrate and the lens sheet does not change after printing an image on the surface,
When printing an image on the printing surface,
A printing medium, wherein a region different from the attachment portion of the printing substrate and a region different from the attachment portion of the lens sheet are relatively moved to expose the printing surface.   The rotation part which makes the said printing substrate and the said lens sheet move relatively, and exposes the said printing surface is formed in at least one of the said printing substrate or the said lens sheet. Print media.   The turning portion is formed between the attaching portion of the lens sheet and a region different from the attaching portion, and is a folded portion that bends the lens sheet to the one surface side. The print medium according to claim 3.   A region different from the attaching portion of the lens sheet is divided by at least one cut, and the divided lens sheet has the printing base in a region different from a part of the printing surface exposed at the time of printing. The print medium according to claim 2, wherein the print medium is fixed to a material.   The printing medium according to any one of claims 2 to 5, wherein the fixing of the printing base material and the lens sheet in the attaching portion is performed by a fixing member.   The printing medium according to claim 5, wherein the fixing of the part of the lens sheet divided by the cut and the printing substrate is performed by a fixing member.   The print medium according to claim 2, wherein a fixing member is provided on the other surface of the lens sheet.   The printing medium according to claim 2, wherein a fixing member is provided at an edge of the printing surface of the printing substrate.   The print medium according to claim 6, wherein the fixing member is glue or double-sided tape. The printing medium according to any one of claims 2 to 10, wherein the bonding of the printing base material and the lens sheet in the bonding unit is performed by a pin.

Images