JP2004295020A - Anisotropic light-transmissive sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize both an invisible state and a visible state in one prescribed portion of an inscribed material being a recognition object without processing the inscribed material with respect to an anisotropic light-transmissive sheet by which light interception bringing about an invisible state in an opposite surface direction and light transmission bringing about a visible state are determined in different directions. <P>SOLUTION: A perforation constituted of the prescribed number of holes 13 formed at, for example, 45° is provided in a prescribed area of a light-nontransmissive sheet substrate 12 which is set to an invisible state in the opposite surface direction. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an anisotropic light-transmitting sheet in which light shielding and invisible light that are invisible with respect to the opposite surface direction are determined in different directions.
[0002]
[Prior art]
Conventionally, for example, a check for urging learners to memorize by marking a character displayed on a notebook or book with a predetermined color and covering the translucent plastic sheet to make the marking part unrecognizable. Learning tools for memorization called pens and check sheets are known. The following patent documents etc. are known about such a learning tool for memorization.
[0003]
[Patent Document 1]
Japanese Patent Publication No.57-37871 [Patent Document 2]
Japanese Utility Model Publication No. 7-29558 [0004]
The learning tool for memorization described in the above-mentioned patent document performs marking with a marking pen of a predetermined color (for example, magenta) on a predetermined character displayed on a notation such as a notebook or a book, and the marking color and the complementary color. By covering the translucent plastic sheet colored with the relevant color (green with respect to magenta), only the marked character portion becomes black and the character cannot be recognized.
[0005]
[Problems to be solved by the invention]
However, when a predetermined part (for example, a character part) of a notation is made unrecognizable, it is necessary to mark with a marking pen of a corresponding color, while the marked part cannot be erased or is erased. Even if it is possible to do so, the act of tracing with a special erasing ink must be performed. In addition, depending on the color of the marking, the complementary color-related sheet has to be prepared as a dedicated one, and there is a problem that it is difficult to cope with each including the size.
[0006]
Therefore, the present invention has been made in view of the above problems, and the anisotropic light transmission that makes it possible to achieve both an invisible state and a visible state at a predetermined same portion of the notation without any application to the notation to be recognized. The purpose is to provide a sheet.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problem, in the invention of claim 1, a non-transparent sheet base material in which the opposite surface direction is invisible, and a predetermined number of predetermined angles at predetermined angles in a predetermined region of the sheet base material And a perforated part in which holes are formed.
[0008]
In inventions of claims 2 to 4,
The “predetermined number of holes in the perforated part is formed by irradiating laser light at the oblique angle with respect to the sheet base material”,
“A predetermined adhesive region on one side of the sheet base material is provided with a detachable temporary adhesive layer”,
“Information relating to the visual recognition direction that allows the opposite surface to be viewed through the perforated portion is written on a predetermined portion of one surface of the sheet base material”.
[0009]
In this way, a perforated part in which a predetermined number of holes are formed at a predetermined oblique angle is provided in a predetermined region of an opaque sheet base material in which the opposite surface direction is invisible. That is, since a predetermined number of holes are formed at an oblique angle in the sheet base material, the opposite surface is invisible from the vertical direction of the sheet, and the opposite surface is visible only from the formation angle of the hole. Therefore, the invisible state and the visible state can be made compatible at a predetermined same portion of the notation without any application to the notation for recognition.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
In FIG. 1, the block diagram of the anisotropic transmission sheet which concerns on 1st Embodiment of this invention is shown. 1A is a partial plan view, and FIG. 1B is a partial enlarged cross-sectional view. 1A and 1B, the anisotropic light-transmitting sheet 11 has a predetermined number of light-transmitting holes 13A formed in a predetermined region of the sheet base 12 at an angle of, for example, 45 degrees with respect to a plane. A perforated part 13 is provided.
[0011]
The sheet base 12 is invisible in the opposite direction, and paper, plastic, metal, or the like is employed. In addition, when adopting plastic, the color material which makes the invisible state mixed with the sheet which mixed the coloring material which makes the invisible state into the main component or the transparent or translucent plastic sheet is applied. Is used. In the case of a flexible material such as a paper material, a material having a thickness such that the formed light transmitting hole 13A is not crushed is used.
[0012]
The perforated portion 13 is formed with, for example, light transmitting holes 13A having a diameter of 0.3 mm at a pitch of 0.5 mm in the formation region of the sheet base 12. Further, the angle of the formed light transmitting hole 13A is an angle at which the opposite surface cannot be seen through the space of the light transmitting hole 13A itself when viewed from the vertical direction on the plane of the anisotropic light transmitting sheet 11. Thus, it is appropriately set in relation to the distance between the adjacent light transmitting holes 13A.
[0013]
Here, FIG. 2 shows an explanatory diagram for forming the anisotropic light-transmitting sheet of FIG. 2A and 2B, when the light transmitting hole 13A constituting the perforated portion 13 is formed at an angle of 45 degrees, for example, the laser light 22 irradiated by the laser irradiation means 21 is inclined at an angle of 45 degrees. It is formed by irradiating the sheet substrate 12 at an angle. The laser irradiating means 21 is shown only with nozzles in the figure and is not shown in its entirety, but is provided with a laser oscillating part and a scan driving means (for example, a galvano mechanism) as is conventionally known. For example, a laser beam appropriately selected according to a perforation diameter of a CO ₂ laser, a YAG laser, a UV laser, or the like is generated by an existing laser generation mechanism.
[0014]
As described above, since the light transmitting holes 13A are formed by the laser light from the laser irradiation means 21, the light transmitting holes 13A having a diameter of 0.3 mm can be formed at a pitch of 0.5 mm as described above. In addition, although the figure showed the case where the translucent hole 13A was formed with a circular hole cross section, it can be appropriately set like an elliptical shape, a square shape, a triangular shape, etc. It can also be set with.
[0015]
Therefore, FIG. 3 shows an explanatory view of a visual recognition state using the anisotropic light-transmitting sheet of FIG.
In FIG. 3A, for example, it is assumed that a display unit 32 (for example, “ABCDEFGHIJK”) on which a predetermined character is formed is displayed on a paper notation 31. As shown in FIG. 3B, the anisotropic light-transmitting sheet 11 is positioned on a part of the display portion 32 (for example, “ABCDE”) in an overlapping state.
[0016]
At this time, as shown in FIG. 3C, the overlapped portion (“ABCDE”) is invisible from the vertical direction on the plane of the anisotropic light-transmitting sheet 11 (FIG. 3B). ). Therefore, when the viewing angle is the angle (45 degrees) at which the light transmitting hole 13A is formed, the portion ("ABCDE") where the display unit 32 becomes invisible due to transmission and reflection through the light transmitting hole 13A becomes visible. Can be recognized.
[0017]
As described above, since a predetermined number of translucent holes 13A are formed at an oblique angle in the sheet base material 12, they are positioned on the opposite surface in the overlapping portion from the vertical direction of the anisotropic translucent sheet 11. The display part 32 of the notation 21 is invisible, and the invisible part is visible at the formation angle of the translucent hole 13A. Thereby, the invisible state and the visible state can be made compatible at the same portion of the portion where the anisotropic light-transmitting sheet 11 of the notation 31 is overlapped without any application to the notation 31 of the recognition target. is there.
[0018]
By the way, in the said embodiment, although the case where the arrangement | sequence of 13 A of translucent holes which comprise the perforation part 13 was regular was shown, it can also form in shapes, such as a staggered pattern, and may arrange at random. It can be formed in a desired arrangement as appropriate, and can be made more clearly visible by increasing the formation density of the light transmitting holes 13A (in the drawing, it is shown roughly for the sake of explanation). This is because the light-transmitting holes 13A are formed by irradiating the laser light 22, and can be easily formed by setting the arrangement and density. Moreover, although the case where it was set as the sheet | seat anisotropic direction translucent sheet | seat 11 was shown in the said embodiment, it may be made into the roll shape of predetermined length, and can also be cut | disconnected suitably at the time of use. The same applies to the following embodiments.
[0019]
Next, in FIG. 4, the block diagram of the anisotropic transmission sheet which concerns on 2nd Embodiment of this invention is shown. 4A and 4B, one surface of the anisotropic light-transmitting sheet 11 provided with perforated portions 13 in which a predetermined number of light-transmitting holes 13A are formed in the sheet base 12 (for example, FIG. 3B). The back surface of the anisotropic light-transmitting sheet 11 used in 1) is provided with a detachable temporary adhesive layer 41 on a predetermined portion of 11A. For the adhesive layer 41, for example, a pressure sensitive adhesive is employed. As this pressure-sensitive adhesive, what has been known is sufficient. For example, a non-peelable adhesive base such as natural rubber latex is filled with a particulate filler such as silica or corn. .
[0020]
As shown in FIG. 4C, such an anisotropic light-transmitting sheet 11 has an anisotropic light-transmitting portion (for example, “ABCDE”) among the portions displayed on the display unit 32 of the notation 31. The sheet 11 is fixed by being temporarily bonded by the adhesive layer 41 in a stacked state.
[0021]
That is, the adhesive layer 41 can be used by being fixed, and the direction to be visible can be freely determined and pasted. In this case, since the adhesive layer 41 is a detachable temporary adhesive, the adhesive does not remain on the notation 31 at the time of peeling. 4 shows the case where the adhesive layer 41 is provided on a part of one surface of the anisotropic light-transmitting sheet 11, it may be provided in the entire region other than the perforated part 13, and the perforated part 13 may be provided. You may provide in the front surface included.
The adhesive layer 41 is basically applied thinly, and even if it is formed by closing the light transmitting hole 13A, there is no effect on the light transmitting.
[0022]
Next, the block diagram of the anisotropic light-transmitting sheet which concerns on FIG. 5 at 3rd Embodiment of this invention is shown. 5 (A) and 5 (B), an opposite surface is provided through a perforated portion 13 on a predetermined portion of one surface of the anisotropic light-transmitting sheet 11 (11-1, 11-2) as described above. Information related to the viewing direction that can be viewed is displayed. The information may be any notation as long as it is related to the viewing direction that can be viewed. For example, as shown in the figure, the viewing direction that can be viewed is represented by the arrows 51 and 52 as the viewing information.
[0023]
That is, as shown in FIG. 5 (A), when the arrow 51 is written on the anisotropic light-transmitting sheet 11-1, the opposite surface side is visible by viewing from the upper left diagonal on the cross-sectional surface, As shown in FIG. 5 (B), when the arrow 52 is written on the anisotropic light-transmitting sheet 11-2, it indicates that the opposite surface side is visible when viewed from the front and diagonally on the drawing. Yes.
[0024]
Therefore, as shown in FIG. 5C, among the portions (“A to P”) displayed on the display portion 32 of the notation 31, a part (for example, “ABCDE”) has a different-direction translucent sheet 11 −. 1 is overlapped, and when the anisotropic light-transmitting sheet 11-2 is overlapped with another part (for example, “JKLMNO”), in the anisotropic light-transmitting sheet 11-1, the part (“ABCDE”) is obtained by following the arrow 51. Can be recognized in the visible state, and in the unidirectional translucent sheet 11-2, following the arrow 52, the other part ("JKLMNO") can be recognized in the visible state. Of course, it may be used alone.
[0025]
Thus, the convenience of the user can be improved by notifying information related to the viewing direction that can be viewed.
[0026]
【The invention's effect】
As described above, according to the present invention, the perforated part in which a predetermined number of holes are formed at a predetermined oblique angle is provided in a predetermined region of the opaque sheet base material in which the opposite surface direction is invisible. Thus, the invisible state and the visible state can be made compatible at a predetermined same part of the notation without any application to the notation of the recognition target.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of an anisotropic light-transmitting sheet according to a first embodiment of the present invention.
2 is an explanatory diagram for forming the anisotropic light-transmitting sheet in FIG. 1. FIG.
3 is an explanatory diagram of a visually recognized state by the anisotropic light-transmitting sheet in FIG. 1. FIG.
FIG. 4 is a configuration diagram of an anisotropic light-transmitting sheet according to a second embodiment of the present invention.
FIG. 5 is a configuration diagram of an anisotropic light-transmitting sheet according to a third embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Anisotropy translucent sheet | seat 12 Sheet | seat base material 13 Perforated part 13A Translucent hole 21 Laser irradiation means 22 Laser beam 31 Notation body 32 Display part 41 Adhesive layers 51 and 52 Visual information

Claims (4)

An opaque sheet base material in which the opposite surface direction is invisible;
An anisotropic light-transmitting sheet, comprising: a perforated portion having a predetermined number of holes formed at a predetermined oblique angle in a predetermined region of the sheet base material. 2. The anisotropic light-transmitting sheet according to claim 1, wherein the predetermined number of holes of the perforated portion are formed by irradiating laser light at the oblique angle with respect to the sheet base material. An anisotropic translucent sheet. 2. The anisotropic light-transmitting sheet according to claim 1, wherein a peelable temporary adhesive layer is provided in a predetermined region on one surface of the sheet base material. Light sheet. It is an anisotropic light-transmitting sheet according to at least any one of claims 1 to 3, wherein a predetermined direction on one surface of the sheet base material has a viewing direction in which an opposite surface can be viewed through the perforated portion; An anisotropic light-transmitting sheet characterized in that related information is described.

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