file

Abstract

To provide a file with a simple structure, in which documents are unlikely to fall off and which is provided with a plurality of storage areas having different functions. [Solution] A file 1 is formed by bending a main body sheet 10, which has a first sheet 11, a second sheet 12, and a third sheet 13 aligned in one direction. The file 1 is folded at a first folding position between the second sheet 12 and the third sheet 13 to place the third sheet 13 on top of the second sheet 12, and is also folded at a second folding position between the second sheet 12 and the first sheet 11 to place the first sheet 11 on top of the third sheet 13. The file 1 is then formed by fixing the lower part (lower edge) of the second sheet 12 and the lower part (lower edge) of the third sheet 13 so that they do not separate, and by fixing the lower part (lower edge) of the third sheet 13 and the lower part (lower edge 112) of the first sheet 11 so that they do not separate.

Description

[Technical Field]

[0001] The present invention relates to a file with multiple storage areas. [Background technology]

[0002] Conventionally, files in which a storage area is formed by folding a main body sheet and fixing the lower part of the overlapping portion so that the overlapping portions are not separated have been widely known. Among such files, there are those having multiple storage areas, as shown in Patent Document 1. The file shown in Patent Document 1 is formed by folding a single sheet material (main body sheet) in which a first sheet substrate and a third sheet substrate are connected at this connection portion and inserting a second sheet substrate between the first and third sheet substrates. In this state, the bottom edges of the first sheet substrate, the second sheet substrate, and the third sheet substrate are joined by thermal welding or the like, so that the file shown in Patent Document 1 is formed to have multiple storage areas that are open at the top and one side. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3198868 Summary of the Invention [Problem to be solved by the invention]

[0004] The file described in Patent Document 1 as mentioned above has multiple storage areas of the same type, and each storage area has the same functions, such as ease of retrieving documents stored in it, making it difficult for users to use multiple storage areas appropriately depending on the documents they store.

[0005] Therefore, an object of the present invention is to provide a file with a simple structure, which prevents documents from falling out, and which has multiple storage areas with different functions. [Means for solving the problem]

[0006] (1) In order to solve the above problems, the file according to the present invention is a file formed by bending a main body sheet, the main body sheet having a first sheet, a second sheet, and a third sheet aligned in one direction, the first sheet being located at one end of the main body sheet and having an upper side, a lower side, and a first open side, the second sheet being arranged contiguous to the first sheet on the main body sheet and having an upper side and a lower side, and the third sheet being arranged contiguous to the second sheet on the opposite side of the first sheet on the main body sheet and having an upper side, a lower side, and a second open side, the file is then folded at a first folding position between the second and third sheets to overlap the third sheet, and at a second folding position between the second and first sheets to overlap the first sheet, and the bottom of the second sheet and the bottom of the third sheet are fixed so as not to be spaced apart, and the bottom of the third sheet and the bottom of the first sheet are fixed so as not to be spaced apart.

[0007] According to the above configuration, multiple storage areas can be formed in the area between the first and third sheets and the area between the third and second sheets with a simple configuration that simply involves folding the main body sheet at the first and second folding positions, fixing the lower part of the second sheet to the lower part of the third sheet, and fixing the lower part of the third sheet to the lower part of the first sheet. Here, the storage area between the third and first sheets is open at the top and one side, which has the advantage (function) of making it easy to put in and take out documents, etc., while the storage area between the third and second sheets is bag-like with only the top open, which has the advantage (function) of making it difficult for documents, etc. to fall out. Such multiple storage areas with different functions can be realized with the above simple configuration. Furthermore, since the bottom of the third sheet and the bottom of the first sheet are fixed so that they do not separate, and the bottom of the second sheet and the bottom of the third sheet are fixed so that they do not separate, it is possible to prevent the third sheet from slipping out from between the first sheet and the second sheet, and documents from falling out of the area between the third sheet and the second sheet.

[0008] (2) The lower part of the second sheet and the lower part of the third sheet may be fixed so as not to separate by adhering, and the lower part of the third sheet and the lower part of the first sheet may be fixed so as not to separate by adhering.

[0009] According to the above configuration, the lower part of the second sheet is adhered to the lower part of the third sheet, and the lower part of the third sheet is adhered to the lower part of the first sheet, so that the lower part of the third sheet is more firmly fixed to the lower part of the first sheet, and the lower part of the second sheet is also fixed to the lower part of the third sheet, preventing the third sheet from slipping out from between the first sheet and the second sheet.

[0010] (3) A first attachment piece may be provided so as to continue downward from the lower edge of the second sheet, and be folded toward the first sheet at a third folding position between the second sheet and the first attachment piece so as to overlap the first sheet, sandwiching the lower edges of the first sheet and the third sheet between the second sheet and the first attachment piece, and the inside of the first attachment piece being attached to the first sheet, thereby fixing the lower edges of the second sheet and the third sheet, and fixing the lower edges of the third sheet and the first sheet.

[0011] With the above configuration, the bottom edge of the first sheet and the bottom edge of the third sheet are sandwiched between the first mounting piece and the second sheet, and the inside of the first mounting piece is simply attached to the first sheet, so that the bottom edge of the second sheet and the bottom edge of the third sheet are fixed so as not to separate, and the bottom edge of the third sheet and the bottom edge of the first sheet are fixed so as not to separate.

[0012] (4) A second mounting piece may be provided that continues downward from the lower edge of the third sheet, the second mounting piece having a shorter vertical dimension than the first mounting piece, the second mounting piece being folded toward the first sheet at a fourth folding position between the second mounting piece and the third sheet to overlap the first sheet, and the inside of the first mounting piece being attached to the first sheet with the second mounting piece interposed between it and the first sheet.

[0013] According to the above configuration, the inside of the first mounting piece and the first sheet are fixed with the second mounting piece interposed, so that the second mounting piece engages with the inside of the first mounting piece and the first sheet, making it even more difficult for the third sheet to slip out from between the first sheet and the second sheet.

[0014] (5) The second sheet may have a thimble cutout formed on the upper edge thereof.

[0015] According to the above configuration, when storing documents or the like in the storage area between the third sheet and the second sheet, the user can use the thimble notch to make it easier to open the storage area.

[0016] (6) The first sheet may have a pocket slit formed therein, which serves as an insertion opening between the first sheet and the third sheet.

[0017] According to the above configuration, with a simple configuration of just forming a pocket slit in the first sheet, it is possible to use the pocket slit as an opening to insert documents (business cards, cards, etc.) between the first sheet and the third sheet.

[0018] (7) In the configuration of (6) above, the first sheet may be transparent or translucent.

[0019] According to the above configuration, since the first sheet is transparent or translucent, even if a document (business card, card, etc.) is inserted deeply between the first sheet and the third sheet using the pocket notch as an opening, the user can still see the contents of the document (business card, card, etc.).

[0020] (8) A first illustration may be drawn on the surface of the third sheet that overlaps with the first sheet.

[0021] According to the above configuration, if the first sheet is transparent or semi-transparent, the first illustration drawn on the third sheet can be seen through the first sheet. Also, if the first sheet is not transparent or semi-transparent (non-transparent), the first illustration drawn on the third sheet can be seen only when the first sheet is turned over, and an illustration that is normally invisible is displayed, giving the user a sense of surprise.

[0022] (9) In the configuration of (8) above, the main body sheet may be made of transparent paper.

[0023] According to the above configuration, the main body sheet is made of transparent paper, so the first sheet is transparent or semi-transparent, allowing the first illustration drawn on the third sheet to be seen through the first sheet. Furthermore, the file is made of paper that can easily decompose in nature, making it an environmentally friendly file, yet its triple layer construction allows it to be strong.

[0024] (10) In the configuration of (9) above, the first sheet may have a second illustration drawn on the surface opposite to the surface overlapping the third sheet.

[0025] According to the above configuration, the user can see both the first illustration drawn on the third sheet and the second illustration drawn on the first sheet through the first sheet. This allows the first and second illustrations to be related to each other, thereby enhancing the aesthetic appeal of the file design. Furthermore, because the first and second illustrations are drawn on the same side of the main sheet, they can be drawn in the same process, reducing the manufacturing cost of the file. [Effects of the Invention]

[0026] According to the above configuration, it is possible to provide a file with a simple configuration that prevents documents from falling out and that has a plurality of storage areas with different functions. [Brief explanation of the drawings]

[0027] [Figure 1] 1 is an external view of a file according to a first embodiment of the present invention, viewed obliquely from above. [Figure 2] FIG. 2 is a diagram showing a main body sheet of the file shown in FIG. [Figure 3] 1. (A) is a diagram (part 1) showing a method for assembling the file shown in FIG. 1, and (B) is a diagram (part 2) showing a method for assembling the file shown in FIG. [Figure 4] FIG. 10 is an external view of a file according to a second embodiment of the present invention, viewed obliquely from above. [Figure 5] FIG. 5 is a diagram showing a main body sheet of the file shown in FIG. [Figure 6] 4A is a diagram (part 1) showing a method for assembling the file shown in FIG. 4, and FIG. 4B is a diagram (part 2) showing a method for assembling the file shown in FIG. [Figure 7] 4A is a diagram (part 3) showing a method for assembling the file shown in FIG. 4, and FIG. 4B is a diagram (part 4) showing a method for assembling the file shown in FIG. [Figure 8] FIG. 10A is a front view of a file according to a third embodiment of the present invention, and FIG. 10B is a view showing the main body sheet of the file shown in FIG. [Figure 9] FIG. 10A is an external view of a file according to a fourth embodiment of the present invention, seen from diagonally above, and FIG. 10B is a view showing the main body sheet of the file shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0028] [First embodiment] A file according to a first embodiment of the present invention will be described below with reference to Figures 1 to 3. Figure 1 is an external view of the file according to the first embodiment of the present invention, seen from diagonally above. Figure 2 is a view showing the main body sheet of the file shown in Figure 1. Figure 3(A) is a diagram (part 1) showing how to assemble the file shown in Figure 1, and Figure 3(B) is a diagram (part 2) showing how to assemble the file shown in Figure 1. Note that when referring to the surface side or front side of file 1, this refers to the front side in Figure 1.

[0029] (Overall structure of File 1) The file 1 according to the first embodiment is for storing documents and the like, and is formed by bending a single, generally rectangular main body sheet 10 that is elongated in the left-right direction when viewed from the front. In the first embodiment, the front side or front side of the main body sheet 10 refers to the front side in FIG. 2, and the back side of the main body sheet 10 refers to the back side in FIG. 2. The front side of the main body sheet 10 is referred to as the front side M1, and the back side is referred to as the back side M2. The right side of the main body sheet 10 refers to the right side in FIG. 2, and the left side of the main body sheet 10 refers to the left side in FIG. 2. Referring to FIG. 2, the main body sheet 10 has a first sheet 11, a second sheet 12, and a third sheet 13 that are aligned in one direction (left-right direction). The first sheet 11, the second sheet 12, and the third sheet 13 have generally the same dimensions in the left-right direction (width direction) and height direction. The file 1 is formed to have multiple storage areas by folding the first sheet 11 and the second sheet 12 inward at a second folding position K1 between the first sheet 11 and the second sheet 12 and at a first folding position K2 between the second sheet 12 and the third sheet 13, and fastening the bottom of the first sheet 11 and the bottom of the third sheet 13 so that they do not separate, and fastening the bottom of the third sheet 13 and the bottom of the second sheet so that they do not separate. Here, the storage area between the third sheet 12 and the second sheet (hereinafter referred to as the "one-side open storage area") is open at the top and one side, which has the advantage (function) of making it easy to put in and take out documents, etc. The storage area between the second sheet 12 and the third sheet 13 (hereinafter referred to as the "envelope-shaped storage area") is bag-shaped with only the top open, which has the advantage (function) of making it difficult for documents, etc. to fall out.

[0030] In the first embodiment, the file 1 (main body sheet 10) is made of permeable paper, but it may be non-permeable and may be made of other materials such as resin. The file 1 is A4 size (220 mm wide x 310 mm high), but may be other sizes such as B5, A5, A3, etc. The structure of the file 1 will be explained in more detail below by explaining the structure of the main body sheet 10 and how to assemble the file 1.

[0031] (Configuration of main body sheet 10) The first sheet 11 has a substantially rectangular shape with a predetermined thickness (for example, between 0.05 mm and 1.00 mm), is located at one end (left end) of the main body sheet 10, and has an upper side 111, a lower side 112, and a first open side 113 on the one end. The upper left corner of the first sheet 11 is formed in an arc, and the first open side 113 has a substantially semicircular notch 1131 for a thimble. In the main body sheet 10, the second sheet 12 is disposed adjacent to the other end (right end) of the first sheet 11. The second sheet 12 has a substantially rectangular shape with a predetermined thickness (for example, between 0.05 mm and 1.00 mm), and has an upper side 121 and a lower side 122. An approximately rectangular thimble notch 1211 is formed on the top edge 121, which makes it easier for the user to open the envelope-shaped storage area between the second sheet 12 and the third sheet 13 when storing documents or the like in the storage area.

[0032] In the main body sheet 10, the third sheet 13 is arranged so as to be continuous with the opposite side (right end side) of the first sheet 11 in the second sheet 12. The third sheet 13 has a substantially rectangular shape with a predetermined thickness (for example, a thickness between 0.05 mm and 1.00 mm), and has an upper side 131, a lower side 132, and a second open side side 133 on the right end side. A notch is formed above the joining position of the third sheet 13 and the second sheet 12, and this notch forms the upper left corner of the third sheet 13 and the upper right corner of the second sheet 12 into an arc shape.

[0033] (File 1 assembly method) As shown in FIG. 3(A), the file 1 is folded at a first folding position K2 between the second sheet 12 and the third sheet 13, and as shown in FIG. 3(B), the third sheet 13 is placed on top of the front surface M1 of the second sheet 12. In this state, the back surface M2 of the third sheet 13 is located on the front surface of the file 1. Furthermore, the second sheet 12 and the first sheet 11 are folded at a second folding position K1 between the second sheet 12 and the first sheet 11, and the first sheet 11 is placed on top of the third sheet 13. In this state, the back surface M2 of the first sheet 11 is located on the front surface of the file 1. Here, the bottom of the second sheet 12 and the bottom of the third sheet 13 are fixed so as not to separate from each other, and the bottom of the third sheet 13 and the bottom of the first sheet 11 are fixed so as not to separate from each other. In this way, the file 1 shown in FIG. 1 is formed.

[0034] In the first embodiment, the lower portion of the second sheet 12 and the lower portion of the third sheet 13 are attached by applying glue or the like, so that the lower edge 122 of the second sheet 12 and the lower edge 132 of the third sheet 13 are fixed so as not to be separated from each other. Specifically, as shown in FIG. 3(A), glue 14A is applied across the left-right direction to the lower edge of the front surface M1 of the second sheet 12, and the front surface M1 of the third sheet 13 is superimposed and attached on top of it. Then, the lower portion of the third sheet 13 and the lower portion of the first sheet 11 are attached by applying glue or the like, so that the lower edge 132 of the third sheet 13 and the lower edge 113 of the first sheet 11 are fixed so as not to be separated from each other. Specifically, as shown in FIG. 3(B), glue 14B is applied across the left-right direction to the lower edge of the back surface M2 of the third sheet 13, and the front surface M1 of the first sheet 11 is superimposed and attached on top of it. Note that, by using a method other than the above-described method, the lower part (lower side 122) of the second sheet 12 and the lower part (lower side 132) of the third sheet 13 may be fixed so as not to separate, and the lower part (lower side 132) of the third sheet 13 and the lower part (lower side 112) of the first sheet 11 may be fixed so as not to separate. For example, if the file 1 is made of resin, they may be fixed by heat welding or the like.

[0035] According to the configuration of the file 1 of the first embodiment, a single main body sheet 11 is folded at the first folding position K2 and the second folding position K1, and the lower portion (lower edge 122) of the second sheet 12 is fixed to the lower portion (lower edge 132) of the third sheet 13, and the lower portion (lower edge 132) of the third sheet 13 is fixed to the lower portion (lower edge 112) of the first sheet 11. This simple configuration allows multiple storage areas to be formed in the area between the first sheet 11 and the third sheet 13 and the area between the third sheet 13 and the second sheet 12. As described above, the storage area between the third sheet 13 and the first sheet 11 is a one-sided open storage area with open top and left sides, which has the advantage of facilitating the insertion and removal of documents and the like. Furthermore, the storage area between the third sheet 13 and the second sheet 12 is a bag-like, envelope-like storage area with only the top open, which has the advantage of preventing documents and the like from easily falling out. Such a plurality of storage areas with different advantages (functions) can be realized with the above-mentioned simple configuration.

[0036] Furthermore, because the bottom (bottom edge 132) of third sheet 13 is fixed to the bottom (bottom edge 112) of first sheet 11 and the bottom (bottom edge 122) of second sheet 12 is fixed to the bottom (bottom edge 132) of third sheet 13, it is possible to prevent third sheet 13 from slipping out from between first sheet 11 and second sheet 12, causing documents to fall out of the envelope-shaped storage area between third sheet 13 and second sheet 12. Furthermore, because the bottom of second sheet 12 is attached to the bottom of third sheet 13, and the bottom of third sheet 13 is attached to the bottom of first sheet 11 with glue or the like, the bottom edge 132 of third sheet 13 is more firmly fixed to the bottom edge 112 of first sheet 11, and the bottom edge 122 of second sheet 12 is attached to the bottom edge 132 of third sheet 13, preventing third sheet 13 from slipping out from between first sheet 11 and second sheet 12. In addition, since it is made of paper that can easily decompose in nature, it is an environmentally friendly file1, and because it is triple-layered, it is strong despite being made of paper.

[0037] Second Embodiment A file according to a second embodiment of the present invention will be described below with reference to Figures 4 to 7. Figure 4 is an external view of the file according to the second embodiment of the present invention from diagonally above. Figure 5 is a view showing the main body sheet of the file shown in Figure 4. Figure 6(A) is a diagram (part 1) showing how to assemble the file shown in Figure 4, and Figure 6(B) is a diagram (part 2) showing how to assemble the file shown in Figure 4. Figure 7(A) is a diagram (part 3) showing how to assemble the file shown in Figure 4, and Figure 7(B) is a diagram (part 4) showing how to assemble the file shown in Figure 4.

[0038] Like the file 1 according to the first embodiment, the file 1A according to the second embodiment is formed by bending a single main body sheet 10A. The main body sheet 10A includes a first sheet 11, a second sheet 12A, and a third sheet 13A aligned in one direction (the left-right direction). The configuration of the first sheet 11 in the second embodiment is the same as the shape of the first sheet 11 in the first embodiment. Similarly to the file 1 according to the first embodiment, the file 1A according to the second embodiment is also similar in that the bottom edge 122A of the second sheet 12A and the bottom edge 132A of the third sheet 13A are fixed so as not to separate from each other, and the bottom edge 132A of the third sheet 13A and the bottom edge 112 of the first sheet 11 are fixed so as not to separate from each other, but the fixing methods are different. Therefore, the shapes of the second sheet 12A and the third sheet 13A in the second embodiment differ from those of the second sheet 12 and the third sheet 13A in the first embodiment. The following describes the file 1A according to the second embodiment, focusing only on the differences from the file 1 according to the first embodiment, and omits a description of the same configuration.

[0039] As shown in FIGS. 4 and 5, the main body sheet 10A of the file 1A according to the second embodiment includes a first attachment piece 123 extending downward from the bottom edge 122A of the second sheet 12A. The first attachment piece 123 has a trapezoidal shape in front view, and its upper edge is approximately the same as the bottom edge 122A of the second sheet 12A in the left-right direction (width direction) and is longer than its lower edge (the bottom edge of the first attachment piece 123). A second attachment piece 134 extends downward from the bottom edge 132 of the third sheet 13. The second attachment piece 134 has a trapezoidal shape in front view, and its upper edge is approximately the same as the bottom edge 132A of the third sheet 13A in the left-right direction (width direction) and is longer than its lower edge (the bottom edge of the second attachment piece 134). The second attachment piece 134 is shorter in the up-down direction than the first attachment piece 123.

[0040] As shown in FIG. 6(A), file 1A is folded at a first folding position K2 between second sheet 12A and third sheet 13A, similar to file 1 according to the first embodiment, so that third sheet 13A is placed on surface M1 of second sheet 12A. Unlike the first embodiment, the lower portions of second sheet 12A and third sheet 13A are not attached to each other, but they may be attached. Furthermore, as shown in FIG. 6(B), file 1A is folded at a second folding position K1 between second sheet 12A and first sheet 11, so that first sheet 11 is placed on top of third sheet 13A. In this state, a first attachment piece 123 located below second sheet 12A and a second attachment piece 134 located below third sheet 13A protrude from the lower edge 112 of first sheet 11. Here, the second mounting piece 134 overlaps the first mounting piece 123, but since the second mounting piece 134 has a shorter vertical dimension than the first mounting piece 123, the lower portion of the first mounting piece 123 is not covered.

[0041] 7(A), the second attachment piece 134 is folded toward the first sheet 11 at a fourth folding position K3 between the second attachment piece 134 and the third sheet 13A, and overlaps the first sheet 11. Then, glue 14C is applied to the first sheet 11 in the left-right direction at a position directly above the second attachment piece 134. In this state, as shown in FIG. 7(B), the first sheet 11 is folded at a third folding position K4 between the second sheet 12 and the first attachment piece 123, and the first attachment piece 123 is placed overlapping the first sheet 11. As a result, the bottom edge 112 of the first sheet 11 and the bottom edge 132A of the third sheet 13A are sandwiched between the second sheet 12A and the first attachment piece 123, and the inside of the first attachment piece 123 is adhered to the first sheet 11. As a result, the lower part (lower side 122A) of the second sheet 12A and the lower part (lower side 132A) of the third sheet 13A are fixed so as not to separate, and the lower part (lower side 132A) of the third sheet 13A and the lower part (lower side 112) of the first sheet 11 are fixed so as not to separate. Here, the inside of the first attachment piece 123 is adhered to the first sheet 11 with the second attachment piece 134 interposed between them. As a result, the second attachment piece 134 engages with the inside of the first attachment piece 123 and the lower part of the first sheet 11, making it even more difficult for the third sheet 13A to slip out from between the first sheet 11 and the second sheet 12A.

[0042] In the second embodiment, second attachment piece 134 is provided, but this is not necessarily required. Instead, the lower part of second sheet 12A and the lower part of third sheet 13A may be attached with glue or the like, as in file 1 according to the first embodiment. Furthermore, even without attaching with glue or the like, bottom edge 112 of first sheet 11 and bottom edge 132A of third sheet 13A can be sandwiched between first attachment piece 123 and second sheet 12A, thereby fixing bottom edge 122A of second sheet 12A and bottom edge 132A of third sheet 13A so that they do not separate from each other.

[0043] With the configuration of file 1 according to the second embodiment described above, bottom edge 112 of first sheet 11 and bottom edge 132A of third sheet 131 are sandwiched between second sheet 12A and first attachment piece 123, and the inside of first attachment piece 123 is simply attached to first sheet 11, thereby fixing bottom edge 122A of second sheet 12A to bottom edge 132A of third sheet 13A and fixing bottom edge 132A of third sheet 13A to bottom edge 112 of first sheet 11. Furthermore, by giving first attachment piece 123 a stylish shape, the aesthetic appearance of the surface of file 1A can be improved.

[0044] Third Embodiment A file according to a third embodiment of the present invention will be described below with reference to FIG. 8. FIG. 8(A) is a front view of a file according to the third embodiment of the present invention, and FIG. 8(B) is a view showing the main body sheet of the file shown in FIG. 8(A). The file 1B according to the third embodiment has a similar configuration to the file 1 according to the first embodiment, except that a first illustration 135 and a second illustration 114 are printed on the back surface M2 of the main body sheet 10B. Below, we will describe only the differences between the file 1B according to the third embodiment and the file 1 according to the first embodiment, and will omit a description of the same configuration.

[0045] A first illustration 135 is drawn (printed) on the surface of the third sheet 13 that overlaps with the first sheet 11 (the back surface M2 of the main sheet 10B). Here, two first illustrations 135, namely, first illustrations 1351 and 1352, are drawn. The file 1B (first sheet 11) according to the third embodiment is formed of transparent paper. This allows the first illustration drawn on the third sheet to be visible through the first sheet, as shown in FIG. 8A. Furthermore, a second illustration 114 is drawn (printed) on the surface of the first sheet 11 opposite the surface that overlaps with the third sheet 13 (the back surface M2 of the main sheet 10B). This allows the user to view both the first illustration 135 drawn on the third sheet 13 and the second illustration 114 drawn on the first sheet 11 through the first sheet 11. By making the first illustration 135 and the second illustration 114 related to each other, the aesthetics of the file 1 can be enhanced. In particular, by making the file 1 semi-transparent, the first illustration 135 can be displayed softly, and in combination with the clearly displayed second illustration 114, delicate expression becomes possible. Furthermore, because the first illustration 135 and the second illustration 114 are drawn on the same surface (the back surface M2 of the main body sheet 10B) of the main body sheet 10, the first illustration and the second illustration can be drawn in the same process, thereby reducing the manufacturing cost of the file.

[0046] Although the file 1B according to the third embodiment is made of transparent paper, it may be made of a transparent material other than paper (such as plastic), or may be made of a non-transparent material. If the file 1B is made of a non-transparent material, the first illustration 135 drawn on the third sheet 13 can be seen only when the first sheet 11 is turned over, and the normally invisible first illustration 135 is displayed, giving the user a sense of surprise.

[0047] [Fourth embodiment] A file according to a fourth embodiment of the present invention will be described below with reference to FIG. FIG. 9(A) is an external view of a file according to a fourth embodiment of the present invention, viewed from diagonally above, and FIG. 9(B) is a view showing the main sheet of the file shown in FIG. 9(A). The file 1C according to the fourth embodiment has the same configuration as the file 1 according to the first embodiment, except that the first sheet 11 has a linear pocket slit 115 formed in the left-right direction, which is smaller than the left-right dimension of the first sheet 11. The pocket slit 115 serves as an insertion opening for documents (business cards, credit cards, etc.) between the first sheet 11 and the third sheet 13. The file 1C according to the fourth embodiment (first sheet 11) is transparent or translucent. Other configurations are the same as those of the file 1 according to the first embodiment, and therefore will not be described further.

[0048] According to the configuration of the file 1C of the fourth embodiment described above, with a simple configuration in which the pocket slit 115 is formed in the first sheet, it is possible to insert documents (business cards, cards, etc.) between the first sheet 11 and the third sheet 13 using the pocket slit 115 as an opening. Furthermore, because the first sheet 11 is transparent or translucent, even when a document is inserted deep between the first sheet 11 and the third sheet 13 using the pocket slit 115 as an opening, the user can still see the contents of the document. Note that, although the pocket slit 115 is linear in the fourth embodiment, it may have other shapes, such as a wavy shape. Any configuration may be used as long as documents (business cards, cards, etc.) can be inserted between the first sheet 11 and the third sheet 13 through the pocket slit 115.

[0049] (Variation) The first to fourth embodiments described above are examples of embodiments to which the present invention is applied, and the materials, number, arrangement, and other configurations can be changed as appropriate.

[0050] In the first to fourth embodiments, the first sheet 11, the second sheets 12, 12A, and the third sheets 13, 13A have approximately the same width and height dimensions, but they may be formed differently. Furthermore, the files 1, 1A, 1B, and 1C are formed by bending a single main body sheet 10, 10A, 10B, or 10C. However, additional sheets may be combined to form more storage space. Furthermore, the thimble notch 1211A formed on the upper edge 121 of the second sheet 12A is approximately semicircular, which is different in shape from the approximately rectangular thimble notch 1211, but may also be the same. The shapes of the thimble notches 1211 and 1211A are not limited to those described in the first to fourth embodiments and may be any shape.

[0051] Furthermore, in the first, third, and fourth embodiments, the bottom edge 112 of the first sheet 11 and the bottom edge 132 of the third sheet 13 are adhered and fixed so as not to be separated from each other, and the bottom edge 132 of the third sheet 13 and the bottom edge 122 of the second sheet 12 are adhered and fixed so as not to be separated from each other, but this configuration is not necessarily limited to this, and it is sufficient that the bottom edge of the first sheet 11 and the bottom edge of the third sheet 13 are fixed so as not to be separated from each other, and the bottom edge of the third sheet 13 and the bottom edge of the second sheet 12 are fixed so as not to be separated from each other. For example, a position slightly above the bottom edge 112 of the first sheet 11 and a position slightly above the bottom edge 132 of the third sheet 13 may be fixed so as not to be separated from each other, and a position slightly above the bottom edge 132 of the third sheet 13 and a position slightly above the bottom edge 122 of the second sheet 12 may be fixed so as not to be separated from each other. It is sufficient that the sheet is fixed in a position where documents can be stored in the one-sided open storage area between the third sheet and the second sheet, and the envelope-shaped storage area between the second sheet 12 and the third sheet 13. [Explanation of symbols]

[0052] 1, 1A, 1B, 1C files 10, 10A, 10B, 10C Main sheet 11 Sheet 1 111 Top 112 bottom 113 1st open side 114 2nd illustration 115 Pocket notch 12, 12A 2nd seat 121 Top 122, 122A bottom edge 1211, 1211A Thimble notch 123 First mounting piece 13, 13A 3rd seat 131 Top 132, 132A bottom edge 133 2nd open side 134 Second mounting piece 135 (1351, 1352) 1st illustration K1 2nd bending position K2 1st bending position K3 4th bending position K4 3rd bending position

Claims

1. A file formed by bending a main body sheet, the main body sheet has a first sheet, a second sheet, and a third sheet aligned in one direction; the first sheet is located at one end of the main body sheet and has an upper side, a lower side, and a first open side; the second sheet is disposed in the main body sheet continuously with the first sheet and has an upper side and a lower side; the third sheet is disposed contiguously with the second sheet on the opposite side of the first sheet in the main body sheet, and has an upper side, a lower side, and a second open side; folding the second sheet and the third sheet at a first folding position between the second sheet and the third sheet to place the third sheet on top of the second sheet, and folding the second sheet and the first sheet at a second folding position between the second sheet and the first sheet to place the first sheet on top of the third sheet; a lower portion of the second sheet and a lower portion of the third sheet are fixed so as not to be spaced apart, and a lower portion of the third sheet and a lower portion of the first sheet are fixed so as not to be spaced apart; A file characterized by:

2. By adhering, a lower portion of the second sheet and a lower portion of the third sheet are fixed so as not to be separated from each other, and by adhering, a lower portion of the third sheet and a lower portion of the first sheet are fixed so as not to be separated from each other.

2. The file of claim 1.

3. a first attachment piece is provided so as to extend downward from the lower side of the second sheet; The first attachment piece is folded toward the first sheet at a third folding position between the second sheet and the first attachment piece to overlap the first sheet, sandwiching the lower edge of the first sheet and the lower edge of the third sheet between the second sheet and the first attachment piece, and the inside of the first attachment piece is attached to the first sheet, thereby fixing the lower part of the second sheet and the lower part of the third sheet so that they do not separate from each other, and fixing the lower part of the third sheet and the lower part of the first sheet so that they do not separate from each other.

2. The file of claim 1.

4. a second attachment piece is provided that extends downward from the lower edge of the third sheet; The second mounting piece has a shorter vertical dimension than the first mounting piece, the second attachment piece is folded toward the first sheet at a fourth folding position between the second attachment piece and the third sheet to overlap the first sheet, and the inner side of the first attachment piece is adhered to the first sheet with the second attachment piece interposed between the first sheet and the first sheet.

4. The file of claim 3.

5. A thimble notch is formed on the upper edge of the second sheet.

2. The file of claim 1.

6. The first sheet has a pocket slit formed therein, which serves as an insertion opening between the first sheet and the third sheet.

2. The file of claim 1.

7. The first sheet is transparent or translucent.

7. The file of claim 6.

8. a first illustration is drawn on a surface of the third sheet that overlaps with the first sheet; 2. The file of claim 1.

9. The main body sheet is made of permeable paper.

9. The file of claim 8.

10. a second illustration is drawn on the surface of the first sheet opposite to the surface overlapping the third sheet; 10. The file of claim 9.

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