JP3422387B2 - Book cover - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to book covers.

[0002]

2. Description of the Related Art Conventionally, the cover of a book is arranged on the outermost side of the booklet and is formed in a rectangular shape having the same size as the booklet.

[0003]

Therefore, the conventional book cover has a problem that the upper and lower corners of the front side of the cover are easily bent. Further, even if it is intended to add practical value or fun to the cover, there is a limit because the cover is formed in a rectangular shape having the same size as the booklet portion. The present invention has been devised in view of the above circumstances, and an object of the present invention is to prevent the corners of the cover from being bent, and further to increase the practical value of the cover and to add fun and the like to the cover of the book. To provide.

[0004]

In order to achieve the above-mentioned object, the present invention is a structure of a book cover consisting of a front cover and a back cover which are arranged outside a booklet section. One is the first, which is connected on the back side to the other of the front and back covers.
It is composed of a cover piece and a second cover piece that is folded back from the first cover piece through the first fold line at the fore edge side of the booklet portion, and the second cover piece is located on the top side of the booklet portion. The edge,
A lower lateral edge portion located on the ground side, a vertical edge portion located on the side opposite to the first fold line, and a curved edge portion connecting the upper lateral edge portion or the lower lateral edge portion and the vertical edge portion in a curved shape. It is characterized by including.

[0005]

Further, the present invention has a structure of a book cover composed of a front cover and a back cover arranged on the outside of the booklet part, wherein one of the front cover and the back cover is the other of the front cover and the back cover. The first cover piece connected on the back side, the second cover piece folded back from the first cover piece through the first fold line on the front side of the booklet part, and the second cover piece on the back side of the booklet part. The third cover piece is folded back along a second fold line, and the third cover piece has an upper lateral edge portion located on the top side of the booklet portion, a lower lateral edge portion located on the ground side, and It is characterized in that it is provided with a vertical edge portion located on the side opposite to the second fold line, and a curved edge portion that connects the upper horizontal edge portion or the lower horizontal edge portion and the vertical edge portion in a curved shape.

Further, the present invention has a structure of a book cover composed of a front cover and a back cover arranged on the outer side of the booklet portion, wherein one of the front cover and the back cover is the other of the front cover and the back cover. The first cover piece connected on the back side, the second cover piece folded back from the first cover piece through the first fold line on the front side of the booklet part, and the second cover piece on the back side of the booklet part. The third cover piece is folded back through the second fold line, and the fourth cover piece is folded back from the third cover piece through the third fold line on the fore edge side of the booklet portion, and the fourth cover piece is An upper lateral edge located on the top side of the booklet, a lower lateral edge located on the ground side, a vertical edge located on the side opposite to the third fold line, and the upper lateral edge or lower lateral edge. And a vertical edge portion that connects the vertical edge portion in a curved shape.

Further, the present invention is characterized in that the curved edge portions are formed above and below the vertical edge portion, respectively. Further, the present invention is characterized in that curved edge portions formed above and below the vertical edge portion are formed with curved lines having different shapes. Further, the present invention is characterized in that the curved edge portion is formed in an arc shape. Further, the present invention is characterized in that the curved edge portion is formed in an elliptical shape. Further, the present invention is characterized in that the curved edge portion is formed by connecting a plurality of curved lines or connecting a curved line and a straight line.

Further, the present invention is characterized in that at least one of upper and lower lateral edges of the cover is formed so as to pass through the top or the bottom of the booklet with the cover closed. Further, the present invention is characterized in that at least one of the upper and lower lateral edge portions of the cover sheet is linearly formed in parallel with the top or the bottom of the booklet portion. Further, the present invention is characterized in that at least one of upper and lower lateral edge portions of the cover sheet is formed in a curved shape. Further, in the present invention, the upper and lower lateral edge portions are formed between the top and bottom of the booklet portion with the cover closed, and at least that portion passes through the top and bottom of the booklet portion. Characterize. Also,
According to the present invention, the upper and lower lateral edges are each formed as a convex curve on the fore edge side, and the line connecting the most foremost side portions is formed so as to be parallel to the fore edge of the booklet portion. Characterize. Further, according to the present invention, the upper and lower lateral edge portions are each formed in a convex curve on the back side, and a line connecting the most back side portions is formed so as to be parallel to the back of the booklet portion. It is characterized by

Further, the present invention is characterized in that the vertical edge portion of the cover sheet is formed in a straight line in parallel with the front edge of the booklet portion with the cover sheet closed. Further, the present invention is characterized in that the vertical edge portion of the cover sheet is formed in a curved shape. Further, the present invention is characterized in that a vertical edge portion of the cover sheet is formed in an uneven shape, and a line connecting a portion most protruding to the edge side is formed to be parallel to the edge of the booklet portion.
Further, the present invention is characterized in that a vertical edge portion of the cover sheet is formed in an uneven shape, and a line connecting a most protruding portion on the back side is formed so as to be parallel to the spine of the booklet portion.

Further, according to the present invention, the upper lateral edge portion is formed in a convex shape toward the top side, the lower lateral edge portion is formed in a convex shape toward the ground side, and the vertical edge portion is depressed toward the back side at the fore edge side. It is characterized in that it is formed. Further, in the present invention, the upper lateral edge portion is formed in a convex shape on the top side, the lower lateral edge portion is formed in a convex shape on the ground side, and the vertical edge portion is formed so as to be depressed toward the fore edge side on the back side. It is characterized by Further, the present invention is characterized in that the upper horizontal edge portion and the vertical edge portion or the lower horizontal edge portion and the vertical edge portion are formed by a single curved line. Further, the present invention is characterized in that the upper lateral edge portion and the upper half portion of the vertical edge portion, and the lower curved portion and the lower half portion of the vertical edge portion are each formed by a single curved line. . Further, the present invention is characterized in that the upper and lower horizontal edge portions and the vertical edge portion are formed by a single curved line.

Further, the present invention is characterized in that a window is formed on the cover. Further, the present invention is characterized in that an opening / closing piece that can be opened and closed is provided on the window. Further, in the present invention, in the closed state of the cover sheet, a cover piece located on the outermost side, and a continuous pictorial pattern is formed over the paper surface portion of the booklet portion exposed to the outside of the cover sheet portion. Characterize.

[0013]

[Function] Since the corners of the cover have roundness, corner folds are prevented, and the practical value of the cover is increased compared to the conventional cover that has the same shape as the booklet part. It is possible to add the size and the like to the cover, which can motivate consumers to purchase and increase the sales volume of books.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in order from the first embodiment with reference to the accompanying drawings. 1A to 1F are explanatory views of a book to which the first embodiment is applied, and show perspective views of the book with the cover opened. Reference numeral 1 is a book, and in the embodiment, the book 1 is a monthly or weekly magazine, and the book 1 is composed of a booklet section 2 and a cover 3. The cover sheet 3 is composed of a cover sheet 4 arranged on one surface side of the booklet section 2 and a back cover sheet 5 arranged on the other surface side of the booklet section 2, and constitutes the cover sheet 4 and the back cover sheet 5. One sheet of paper to be bound is bound on the spine 2S of the booklet section 2 by perfect binding, saddle stitching, or the like.

In FIGS. 1 (A) to 1 (E), the top and bottom sides of the front cover 4 pass through the top and bottom of the booklet section 2 in a state where the front cover 4 is closed, and extend vertically in parallel with the top and bottom. Lateral edge 6
Equipped with. In addition, in FIGS. 1A to 1D, the fore edge 4K side of the front cover 4 extends vertically through the fore edge 2K of the booklet section 2 in a state where the front cover 4 is closed and extends linearly in parallel with the fore edge 2K. A rim 7 is provided. 1A to 1D, the upper horizontal edge portion 6 and the vertical edge portion 7 are provided on the front edge 4K side of the front cover sheet 4.
Are connected at a curved edge 8. The curved edge portion 8 is formed by an arc having a center O and a radius R, and the center O is the front cover 4
Located at the inside, both ends of the curved edge portion 8 are connected so as to contact the vertical edge portion 7 and the upper horizontal edge portion 6, respectively. The radius R is formed to have a size that gradually increases from (A) to (D), and the upper lateral edge portion 6 and the vertical edge portion 7 are formed as shown in FIG.
It is formed so that the length thereof becomes gradually shorter as it goes to (D). In FIG. 1 (E), a curved edge portion 8 is formed with a large radius R with the center O located on the ground side of the booklet portion 2, and the fore edge 4K side is entirely formed by the curved edge portion 8 and the lower end of the curved edge portion 8 is formed. Is connected to the tip of the lower lateral edge portion 6. Further, the upper lateral edge portion 6 is formed in a linear shape with a predetermined length on the spine S side. Further, in FIG. 1 (F), the curved edge portion 8
Is formed in a convex shape toward the fore edge 4K with a relatively short radius R with the center O positioned in the middle of the front cover 4 in the vertical direction.
Similar to (E), the edge 4K side is entirely formed by the curved edge portion 8. Further, the upper lateral edge portion 6 and the lower lateral edge portion 6 are formed with a length smaller than the width of the booklet portion 2, and the upper and lower ends of the curved edge portion 8 are respectively the upper lateral edge portion 6 and the lower lateral edge portion 6. It is connected to the tip. Further, in FIG. 1 (A), a rectangular window M is provided on the front cover 4, and in FIG. 1 (B), the window M is provided on the front cover 4 and the opening / closing piece L is opened / closed so that the window M can be opened / closed with the broken line N as a boundary. Is provided.

Cover sheet 4 shown in FIGS. 1 (A) to 1 (E)
According to the above, the upper corner on the fore edge 4K side is rounded by the curved edge 8 and is formed so as to be positioned inside the booklet section 2, so that the upper corner on the front edge 4K side of the cover 4 is formed. It is possible to prevent corner breakage. According to the front cover 4 shown in FIG. 1 (F), the upper and lower corners on the edge 4K side are rounded by the curved edges 8 and are formed so as to be located inside the booklet 2. Therefore, it is possible to prevent corner folds of the upper and lower corners of the front cover 4 on the edge 4K side. In addition, since the corners of the front cover 4 are rounded in this way, the practical value of the front cover 3 is increased as compared with the conventional rectangular front cover 3 having the same shape and size as the booklet portion 2, and , It becomes possible to add interestingness etc. to the cover 3 while giving it a taste different from the conventional one.
It is possible to motivate consumers to purchase and increase the sales volume of books. Further, since the cover 4 has a rounded shape and has a shape different from that of the booklet 2, the cover 4 and the piece 20 of the booklet 2 exposed to the outside of the cover 4 with the cover 4 closed.
By adding a continuous picture pattern to one place, it is possible to further enhance the taste and the unprecedented fun different from the conventional one. Here, the picture pattern includes a picture, a photograph, a character, a symbol, a table, etc., in which the title, the name of the book 1, a headline, etc. are included, and in the symbol, a trade name, a trademark, a service mark, etc. , Specifically, for example, posters,
Advertisements, itineraries, schedules, calendars, kanji lists, multiplication lists, maps, chronological tables, etc. Also, FIG.
In (A) and (B), the window M is provided on the front cover 4 and the opening / closing piece L is provided on the window M so that the window M can be opened and closed. It is possible to make the fun even more appealing. When the window M is provided, the paper piece 201 of the booklet portion 2 exposed from the window M is
Similar to the above, a picture pattern continuous with the front cover 4 may be attached. In addition, in FIGS. 1A to 1D, since the front cover 4 is provided with the vertical edge portion 7 parallel to the fore edge, the vertical edge portion 7 can be used as an abutment when the cover sheet 3 is folded at the spine S, This is advantageous for efficiently folding the cover sheet 3. It should be noted that the effect of preventing the corners of the front cover 4 described above from being broken, the effect of adding interestingness to the front cover 4 and the effect of adding fun and the like, and the cover 3 with the vertical edge portion 7 are provided.
The effect which is advantageous in efficiently folding the sheet is also obtained in the other embodiments described below, and it is also possible to add a continuous picture pattern or to provide the window M and the opening / closing piece L as follows. It can be applied to the other embodiments described in 1 above, and the same effect can be obtained by applying it.

Next, a second embodiment will be described with reference to FIG. 2A to 2F are explanatory views of a book to which the second embodiment is applied, and show perspective views of the book with the cover opened. Hereinafter, the same parts and portions as those in the first embodiment will be described with the same reference numerals. In FIGS. 2A to 2E, the top and bottom sides of the front cover 4 are upper and lower lateral edges that extend linearly through the top and bottom of the booklet portion 2 in a state where the front cover 4 is closed. 6 is provided. In addition, in FIGS. 2A to 2D, the fore edge 4K side of the front cover 4 extends vertically through the fore edge 2K of the booklet section 2 in a state where the front cover 4 is closed and extends linearly in parallel with the fore edge 2K. A rim 7 is provided. Then, in FIGS. 2A to 2D, the lower lateral edge portion 6 is provided on the front edge 4K side of the front cover 4.
And the vertical edge 7 are connected by a curved edge 8. The curved edge portion 8 is formed by an arc having a center O and a radius R, and the center O
Is located inside the front cover 4, and both ends of the curved edge portion 8 are connected so as to contact the vertical edge portion 7 and the lower horizontal edge portion 6, respectively. The radius R is formed to have a size that gradually increases from (A) to (D), and the length of the lower lateral edge portion 6 and the vertical edge portion 7 gradually increases from FIG. 2 (A) to (D). Is formed to be short. In FIG. 2 (E), the center O
Is formed on the top side of the booklet portion 2 and a curved edge 8 is formed with a large radius R, the edge 4K side is entirely formed by the curved edge 8, and the lower end of the curved edge 8 is at the tip of the lower lateral edge 6. Connected. Further, the lower lateral edge portion 6 is formed in a linear shape with a predetermined length on the spine S side. Further, in FIG. 2 (F), the curved edge portion 8 is formed in a convex shape on the fore edge 4K side with a relatively short radius R with the center O positioned at the middle of the top and bottom of the cover sheet 4,
As in FIG. 2E, the edge 4K side is entirely formed by the curved edge portion 8. Further, the upper lateral edge portion 6 and the lower lateral edge portion 6 are formed with a length smaller than the width of the booklet portion 2, and the upper and lower ends of the curved edge portion 8 are respectively the upper lateral edge portion 6 and the lower lateral edge portion 6. It is connected to the tip. According to the front cover 4 shown in FIGS. 2 (A) to (E), it is possible to prevent corner bending of the lower corner on the front edge 4K side of the front cover 4, and thus the table shown in FIG. 2 (F). According to the cover sheet 4, it is possible to prevent corner folds in the upper and lower corners on the edge 4K side.

Next, a third embodiment will be described with reference to FIG. 3A to 3F are explanatory views of a book to which the third embodiment is applied, and show perspective views of the book with the cover opened. In FIGS. 3 (A) to 3 (E), the top and bottom sides of the front cover 4 are upper and lower lateral edges that extend linearly in parallel with the top and bottom of the booklet 2 with the cover 4 closed. 6 is provided. In addition, in FIGS. 3A and 3B, the front edge 4K side of the front cover 4 is the front edge 2 of the booklet portion 2 with the front cover 4 closed.
A vertical edge portion 7 is provided which extends straightly through the K and parallel to the edge 2K. 3A and 3B, the upper and lower horizontal edge portions 6 and the vertical edge portions 7 are connected by curved edge portions 8 on the front edge 4K side of the front cover 4. The curved edge portion 8 is formed by an arc having a center O and a radius R, the center O is located inside the front cover 4, and both ends of the curved edge portion 8 are respectively a vertical edge portion 7 and upper and lower horizontal edge portions 6. They are connected to each other. The radius R is larger in FIG. 3B than in FIG. 3A. In FIG. 3C, a curved edge 8 is formed with a radius R in which the center O is located at the center of the booklet 2 in the vertical direction.
Are formed by the curved edge portion 8 on the fore edge 4K side, and the upper and lower ends of the curved edge portion 8 are connected so as to contact the tips of the upper and lower lateral edge portions 6, respectively. Also, the upper and lower lateral edges 6
Is formed in a straight line with a predetermined length on the back S side.
Further, in FIGS. 3D and 3E, the edge 4K side is formed by the upper and lower curved edge portions 8. FIG. 3 (D),
In (E), the radii R of the upper and lower curved edges 8 are equal,
R in FIG. 3 (E) is formed to have a larger size than R in FIG. 3 (D). In FIGS. 3D and 3E, the center O of the upper curved edge portion 8 is located on the ground side, the center O of the lower curved edge portion 8 is located on the top side, and the upper and lower curved edge portions 8 are the front edge 4K. On the side, a central portion in the vertical direction intersects, and a convex protrusion 801 is formed on the edge 4K side at the intersection. The upper lateral edge portion 6 and the lower lateral edge portion 6 are formed with a length smaller than the width of the booklet portion 2,
The upper end and the lower end of the curved edge portion 8 are connected to the tips of the upper lateral edge portion 6 and the lower lateral edge portion 6, respectively. In FIG.
Similar to (D) and (E), the fore edge 4K side is formed by the upper and lower curved edge portions 8, but in the case of FIG. 3 (F),
The upper and lower curved edge portions 8 intersect at the central portion in the vertical direction on the fore edge 4K side, and a groove portion 803 recessed toward the back 4S side is formed at the intersecting portion. Further, a line 807 connecting the most protruding portion 805 on the fore edge 4K side in the upper and lower curved edges 8 is formed so as to be parallel to the spine 4S, and this line 807 is the booklet portion with the front cover 4 closed. 2 through the fore edge 2K and extend parallel to the fore edge 2K. According to the front cover 4 shown in FIGS. 3A to 3F, it is possible to prevent corner bending of the upper and lower corners of the front cover 4 on the edge 4K side. Further, the line 807 can be used as an abutment when the cover 3 is folded on the spine like the vertical edge portion 7 in FIGS. 3A and 3B, which is advantageous for efficiently folding the cover 3. . The effect of this line 807 is the same for the lines of other examples described below.

Next, a fourth embodiment will be described with reference to FIG. 4A to 4F are explanatory views of a book to which the fourth embodiment is applied, and show perspective views of the book with the cover opened. In FIGS. 4 (A) to 4 (D), the top and bottom sides of the front cover 4 are upper and lower lateral edges that extend linearly through the top and bottom of the booklet portion 2 in a state where the front cover 4 is closed. 6 is provided. Further, in FIGS. 4A to 4D, the front cover 4K side of the front cover 4 extends linearly through the front cover 2K of the booklet section 2 and in parallel with the front cover 2K with the cover 4 closed. A vertical edge portion 7 is provided. 4A to 4D, the upper horizontal edge portion 6 and the vertical edge portion 7 are connected by two curved edge portions 8 on the edge 4K side of the front cover 4. The curved edge 8
Are formed by arranging the centers O at different positions with equal radii R, the centers O are located in the front cover 4, and the upper ends of the upper curved edges 8 are located at the upper lateral edges 6 and the lower sides. The lower ends of the curved edges 8 are connected to the vertical edges 7, respectively. The radius R is formed to have a size that gradually increases from FIG. 4A to FIG.
The length is gradually shortened from (A) to (D). In FIG. 4 (E), the radius R is further increased, and the edge 4K side is entirely formed by the two curved edges 8. 4 (F), as in FIG. 4 (E), the entire edge 4K side is formed by two upper and lower curved edge portions 8 having the same radius R and different centers O, but FIG. In this case, the upper and lower curved edges 8 intersect at the central portion in the vertical direction on the fore edge 4K side, and a groove portion 803 recessed toward the back 4S side is formed at the intersection. According to the front cover 4 shown in FIGS. 4A to 4E, the front edge 4 of the front cover 4 is
On the K side, it is possible to prevent corner breakage of the upper corner, and FIG.
According to the front cover 4 shown in (F), it is possible to prevent corner folds in the upper and lower corners on the edge 4K side.

Next, a fifth embodiment will be described with reference to FIG. 5A to 5F are explanatory views of a book to which the fifth embodiment is applied, and show perspective views of the book with the cover opened. In FIGS. 5A to 5D, the top and bottom sides of the front cover 4 extend vertically through the top and bottom of the booklet section 2 of the booklet section 2 in a state where the front and back cover 4 is closed. The lateral edge portion 6 is provided. In addition, in FIGS. 5A to 5D, the front edge 4K side of the front cover 4 extends linearly through the front edge 2K of the booklet section 2 and in parallel with the front edge 2K with the front cover 4 closed. A vertical edge portion 7 is provided. Then, in FIGS. 5A to 5D, the upper lateral edge portion 6 is formed on the front edge 4K side of the front cover 4.
And the vertical edge 7 are connected by a curved edge 8. The curved edge portion 8 is an ellipse with a center O and is formed in a convex shape toward the fore edge 4K, and the curved edge portion 8 and the vertical edge portion 7 extend from the upper end of the vertical edge portion 7 to the spine 4
Connection is made via a straight line 811 extending to the S side, and a recess 813 recessed to the back 4S side is formed in this connection portion, as shown in FIG.
From (A) to (D), the minor axis of the ellipse is gradually larger,
The long axis is formed to have a gradually decreasing size.
The length of the vertical edge portion 7 is gradually shortened from (A) to (D). Further, the most protruding portion 805 of the curved edge portion 8 on the fore edge 4K side is formed so as to be located on the extension of the vertical edge portion 7, which makes it easy to use as an abutment when folding the cover 3 on the spine. , Which is advantageous in efficiently folding the cover sheet 3. In FIGS. 5 (E) and (F), the front edge 4K side of the front cover 4 is formed by a curved edge portion 8 forming an ellipse of the center O, and the upper and lower lateral edge portions 6 are straight lines of a predetermined length on the spine 4S side. It is formed into a shape. According to the front cover 4 shown in FIGS. 5A to 5E, it is possible to prevent corner bending of the lower corner on the front edge 4K side of the front cover 4, and as shown in FIG. According to the front cover 4 thus formed, it is possible to prevent corner folds in the upper and lower corners.

Next, a sixth embodiment will be described with reference to FIG. FIGS. 6A to 6F are explanatory views of a book to which the sixth embodiment is applied, and show perspective views of the book with the cover opened. In FIGS. 6A to 6F, the top and bottom sides of the front cover 4 have upper and lower lateral edges 6 that extend linearly in parallel with the top and bottom of the booklet portion 2 with the cover 4 closed. Prepare Further, in FIGS. 6A to 6D, the front edge 4K of the front cover 4 is shown.
The side is provided with a vertical edge portion 7 that linearly extends through the fore edge 2K of the booklet portion 2 and in parallel with the fore edge 2K with the front cover 4 being closed. 6A to 6D, the upper horizontal edge portion 6 and the vertical edge portion 7 are connected by the curved edge portion 8 on the edge 4K side of the front cover 4. The curved edge portion 8 is a freely designed curved line, or a combination of a plurality of curved lines or a combination of a curved line and a straight line is formed in an uneven shape, and the vertical edge portion 7 is formed as shown in FIGS. It is formed so that its length becomes gradually shorter as it reaches (D). In FIGS. 6E and 6F, the front edge 4K side of the front cover 4 is entirely formed by the curved edge portion 8. According to the front cover 4 shown in FIGS. 6A to 6D, the front edge 4 of the front cover 4 is shown.
On the K side, it is possible to prevent corner breakage of the upper corner, and FIG.
According to the front cover 4 shown in (E) and (F), the front edge is 4K.
Bending of the upper and lower corners of the side can be prevented.

Next, a seventh embodiment will be described with reference to FIG. 7A to 7F are explanatory views of a book to which the seventh embodiment is applied, and show perspective views of the book with the cover opened. In FIGS. 7A to 7F, the ground side of the front cover sheet 4 is a lower lateral edge portion that passes through the ground of the booklet section 2 and extends linearly in parallel with the ground surface in a state where the front cover sheet 4 is closed. 6 is provided. Figure 7
In (A) to (C), the front edge 4K side of the front cover 4 is
The front cover 4 is provided with a vertical edge portion 7 that linearly extends through the fore edge 2K of the booklet portion 2 and in parallel with the fore edge 2K when the front cover 4 is closed. Then, in FIGS. 7A to 7F, the front cover 4
A curved edge portion 8 that extends in a curved shape from the spine 4S side and the top side of the front cover 4 is formed on the top side of. The curved edge 8
Is formed by a convex arc having a center O and a radius R on the top side, and the radius R is formed such that the radius gradually increases from (A) to (D), and the vertical edge portion 7 is formed as shown in FIG. ) To (C), the length is gradually reduced. Further, in the front cover 4 shown in FIGS. 7D, 7E, and 7F, the top side and the edge 4K side of the front cover 4 are all formed by the curved edge portion 8, and the front cover 4 shown in FIGS. ), The length of the lower lateral edge portion 6 is formed to gradually decrease. According to the front cover sheet 4 shown in FIGS. 7A to 7D, it is possible to prevent corner bending of the upper corner portion on the front edge 4K side of the front cover sheet 4, and FIG.
According to the front cover 4 shown in (F), it is possible to prevent corner folds in the upper and lower corners.

Next, an eighth embodiment will be described with reference to FIG. FIGS. 8A to 8F are explanatory views of a book to which the eighth embodiment is applied, and show perspective views of the book with the cover open. In FIGS. 8A to 8F, the ground side of the front cover 4 is an upper lateral edge portion that extends linearly through the top of the booklet portion 2 and parallel to the top with the cover 4 closed. 6 is provided. Figure 8
In (A) to (C), the front edge 4K side of the front cover 4 is
The front cover 4 is provided with a vertical edge portion 7 that linearly extends through the fore edge 2K of the booklet portion 2 and in parallel with the fore edge 2K when the front cover 4 is closed. 8 (A) to 8 (F), the front cover 4
A curved edge 8 is formed on the ground side of the front cover 4 so as to extend in a curved shape from the spine 4S side and the ground side. The curved edge 8
Is formed as a convex arc having a center O and a radius R on the ground side, and the radius R is formed so as to gradually increase from (A) to (D), and the vertical edge portion 7 is formed as shown in FIG. ) To (C), the length is gradually reduced. In addition, in the front cover 4 shown in FIGS. 8D, 8E, and 8F, the ground side and the edge 4K side of the front cover 4 are all formed by the curved edge portion 8, and the front cover 4 shown in FIGS. ), The length of the upper lateral edge portion 6 is formed to be gradually shorter. According to the front cover 4 shown in FIGS. 8A to 8D, it is possible to prevent corner bending of the lower corner on the front edge 4K side of the front cover 4, and FIG.
According to the front cover 4 shown in (F), it is possible to prevent corner folds in the upper and lower corners.

Next, a ninth embodiment will be described with reference to FIG. 9A to 9F are explanatory views of a book to which the ninth embodiment is applied, and show perspective views of the book with the cover opened. In FIGS. 9A to 9F, the top and bottom sides of the front cover 4 are provided with curved edge portions 8 that respectively extend in a curved shape from the back side and the top side. The curved edge portion 8 is formed in an arc shape having a center O and a radius R so as to be convex toward the top side and the ground side, respectively.
In (A) to (F), the radii R of the upper and lower curved edges 8 are equal to each other, and the radius R is formed to have a size that gradually increases from (A) to (D). FIG. 9 (A)
In the front edge 4K side of the front cover 4, the front edge 4 is provided with a vertical edge 7 that linearly extends through the edge 2K of the booklet section 2 and in parallel with the edge 2K with the front cover 4 closed. The curved edges 8 are connected above and below, respectively. In FIGS. 9B to 9F, the front edge 4K side of the front cover 4 is entirely formed by upper and lower curved edges 8. In FIG. 9B, the upper and lower curved edges 8 are continuously connected on the front edge 4K side of the front cover 4,
In (C) and (D), they intersect at a central portion in the vertical direction, and a convex protrusion 801 is formed on the fore edge side at the intersection. 9E and 9F, in the front edge 4K of the front cover 4, an arc having a small radius other than the arc having the center O and the radius R is continuously connected to the front edge of the front cover 4. Four
On the K side, a groove portion 803 that is recessed toward the back 4S side is formed at the intersection of the upper and lower curved edges 8. In addition, FIG. 9 (E), (F)
In FIG. 9, a line 807 connecting the most protruding portions 805 on the fore edge 4K side in the upper and lower curved edges 8 is formed so as to be parallel to the back 4S, and in FIG. In the closed state, it passes through the edge 2K of the booklet section 2 and the edge 2
It is formed so as to extend linearly in parallel with K. According to the front cover sheet 4 shown in FIGS. 9A to 9F, it is possible to prevent corner bending of the upper and lower corner portions of the front cover sheet 4 on the side of the front edge 4K.

Next, a tenth embodiment will be described with reference to FIG. 10A to 10F respectively show the first
It is an explanatory view of the book to which the 0th example was applied, and shows the perspective view of the book which opened the cover. 10 (A) to 10 (C), the top side of the front cover 4 is formed by two curved edge portions 8 extending from the spine 4S side and protruding toward the top side. Then, the top side and the edge 4K side of the front cover 4 are all formed by two curved edge portions 8. Each curved edge portion 8 is formed by an arc having a center O and a radius R. In FIGS. 10A to 10F, the two curved edge portions 8 have the same radius R, and the radius R is from (A) to (E). ), The size is gradually increased. In FIGS. 10A to 10C, the edge 4K side of the front cover 4 is a vertical edge portion that extends linearly in parallel with the front edge 2K of the booklet section 2 with the front cover 4 closed. 7 is provided. In addition, FIG.
In (A) to (F), the ground side of the front cover 4 is the front cover 4
The lower lateral edge portion 6 that passes through the ground of the booklet portion 2 in a closed state and extends linearly in parallel with the ground is provided. According to the front cover 4 shown in FIGS. 10A to 10C, the front edge 4 of the front cover 4 is formed.
On the K side, it is possible to prevent the corners of the upper corner from breaking.
According to the front cover sheet 4 shown in 0 (D) to (F), it is possible to prevent corner bending at the upper and lower corners.

Next, the eleventh embodiment will be described with reference to FIG. 11A to 11F respectively show the first
1 is an explanatory view of a book to which one embodiment is applied, showing a perspective view of the book with an open cover. FIG. 11A to 11C, the top side of the front cover 4 is formed by the curved edge portion 8 extending from the spine 4S side, and in FIGS. 10D to 10F, the top side of the front cover 4 is illustrated. And the edge 4K side is entirely formed by the curved edge portion 8. The curved edge 8 is a freely designed curved line, or a combination of a plurality of curved lines, or a combination of a curved line and a straight line is formed in an uneven shape. Figure 1
1 (A) to (F), the front cover 4 is provided with a lower lateral edge portion 6 that extends linearly through the ground of the booklet portion 2 in a state where the front cover 4 is closed, and 11 (A) to 11 (C), the front cover 4 is provided with a vertical edge portion 7 that extends linearly through the front edge 2K of the booklet section 2 in a state where the front cover 4 is closed and in parallel with the front edge 2K. . The vertical edge portion 7 is formed so that its length gradually becomes shorter as it goes to FIGS. 11A to 11C, and the lower horizontal edge portion 6 becomes gradually longer as it goes to FIGS. 11D to 11F. Is formed to be short. In addition, in FIGS. 11E and 11F, a line 807 that connects the most protruding portion 805 of the upper and lower curved edge portions 8 toward the forehead 4K is formed so as to be parallel to the spine 4S.
In (E), this line 807 is formed so as to extend straight through the fore edge 2K of the booklet portion 2 and in parallel with the fore edge 2K with the front cover 4 closed. According to the front cover 4 shown in FIGS. 11A to 11C, the front edge 4 of the front cover 4 is
On the K side, it is possible to prevent the corners of the upper corner from breaking.
According to the front cover sheet 4 shown in FIGS. 1 (D) to 1 (F), it is possible to prevent corner bending at the upper and lower corners.

Next, a twelfth embodiment will be described with reference to FIG. 12A to 12F respectively show the first
It is explanatory drawing of the book to which 2 Example was applied, and the perspective view of the book which opened the cover is shown. In FIG. 12A, the top and bottom of the front cover 4 and the front edge 4K are formed by a single arcuate curved edge portion 8 having a center O and a radius R. On the back 4S side, the curved edge portion 8 is formed so as to project in a convex shape to the fore edge 4K side from a position displaced to an intermediate portion in the vertical direction from the top and bottom. 12 (B) to (E), the portions on the back side of the curved edge portion 8 in FIG. 12 (A) are displaced diagonally toward the fore edge 4K side from the locations displaced from the top and bottom to the intermediate portions in the top-bottom direction. A straight line 821 that extends, a curved line 8 that is recessed in the direction of the intermediate portion in the vertical direction
23, 825 and two straight lines 827 intersecting at a right angle. Further, in FIG. 12 (F), the back side portion of the curved edge portion 8 of FIG. 12A passes through the top and bottom of the booklet portion 2 with the front cover 4 closed, and the upper and lower linear sides are parallel to each other. It is formed by the edge portion 6. FIG. 12 (A)
In (F) to (F), the most protruding portion of the curved edge portion 8 toward the fore edge side is formed at a portion that passes through the fore edge 2K of the booklet portion 2 when the front cover sheet 4 is closed, that is, the front cover sheet 4 of the booklet portion 2 is formed. It is formed with the same width as the width. Further, in FIGS. 12A to 12F, the curved edge portion 8 located on the upside and downside is formed at a location passing through the upside and downside of the booklet portion 2 when the cover 4 is closed. According to the front cover 4 shown in FIGS. 12A to 12F, it is possible to prevent corner bending of the upper and lower corners of the front cover 4 on the side of the front edge 4K.

Next, a thirteenth embodiment will be described with reference to FIG. 13 (A) to 13 (F) respectively show the first
FIG. 3 is an explanatory view of a book to which the third embodiment is applied, and shows a perspective view of the book with an open cover. In FIG. 13 (A), the top and bottom of the front cover 4 and the front edge 4K are formed by a single arcuate curved edge portion 8 having a center O and a radius R. Further, on the front edge 4K side,
With the front cover 4 closed, a vertical edge portion 7 is formed that linearly extends through the edge 2K of the booklet portion 2 and parallel to the edge 2K. In FIGS. 13B to 13E, FIG.
A straight line 831 obliquely extending to the forehead 4K side, and a portion on the back 4S side of the curved edge portion 8 of each of which is displaced to an intermediate portion in the vertical direction with respect to the vertical direction, are recessed in the intermediate portion in the vertical direction. Curves 833, 835, two straight lines 83 intersecting at right angles
It is replaced by 7. In addition, in FIG.
The portion on the spine 4S side of the curved edge portion 8 of FIG. 13A is formed by upper and lower linear lateral edge portions 6 that pass through the top and bottom of the booklet portion 2 and are parallel to the top and bottom with the front cover 4 closed. It was done. In FIGS. 13A to 13F, the curved edge portion 8 located on the upside and downside is formed at a location passing through the upside and downside of the booklet portion 2 when the cover 4 is closed. According to the front cover 4 shown in FIGS. 13A to 13F, it is possible to prevent corner bending of the upper and lower corners of the front cover 4 on the side of the fore edge 4K.

Next, a fourteenth embodiment will be described with reference to FIG. 14A to 14F respectively show the first
FIG. 4 is an explanatory view of a book to which the fourth embodiment is applied, showing a perspective view of the book with the cover opened. In FIGS. 14A to 14F, the top and bottom of the front cover 4 and the edge 4K are formed by two curved edge portions 8 having a center O and a radius R. In FIGS. 14A to 14F, each two curved edge portions 8 are formed with the same radius R. In FIG. 14A, the spine 4S side of the front cover 4 is the curved edge portion 8 from the top and bottom sides. A curve 841 having another shape is extended and formed, and the curve 841 is connected to the two curve edges 8 on the top and bottom sides of the front cover 4. Figure 1
4 (B) to (F), the curve 841 in FIG.
, A straight line 843 that extends obliquely toward the forehead 4K from a position displaced to the middle part in the vertical direction from the top, a curve 845, 847 recessed in the middle part in the vertical direction, and two straight lines 849 that intersect at a right angle. , The front cover 4 is replaced with the upper and lower horizontal edge portions 6 which are linear and overlap with the top and bottom of the booklet 2. In FIGS. 14A to 14F, a line 807 connecting the most protruding portions 805 of the curved edge portions 8 to the fore edge 4K side is parallel to the fore edge 2K of the booklet portion 2 with the cover 4 closed. Is formed. FIG. 14 (A)
According to the front cover sheet 4 shown in (F) to (F), it is possible to prevent corner bending of the upper and lower corners of the front cover sheet 4 on the side of the front edge 4K.

Next, a fifteenth embodiment will be described with reference to FIG. 15 (A) to 15 (F) respectively show the first
It is explanatory drawing of the book to which 5 Example was applied, and the perspective view of the book which opened the cover is shown. 15A to 15F, the top and bottom of the front cover 4 and the edge 4K are all formed by the curved edge portion 8. The curved edge 8 is a freely designed curved line, or a combination of a plurality of curved lines, or a combination of a curved line and a straight line is formed in an uneven shape. In addition, in FIGS. 15A to 15F, a line 80 that connects the most protruding portion 805 on the edge 4K side in the curved edge portion 8
7 is formed so as to be parallel to the spine 4S, and FIG.
Then, the line 807 is formed so as to extend straight through the fore edge 2K of the booklet portion 2 and in parallel with the fore edge 2K with the front cover 4 being closed. According to the front cover 4 shown in FIGS. 15 (A) to 15 (F), it is possible to prevent corner bending at the upper and lower corners.

Next, a sixteenth embodiment will be described with reference to FIG. 16A to 16E respectively show the first
It is an explanatory view of the book to which 6 examples were applied, and the perspective view of the book which opened the cover is shown. The front cover 4 of FIG. 16 (A) is formed by a semi-circular curved edge 8 having a radius R of 1/2 the dimension between the top and bottom of the booklet 2. The front cover 4 of FIG. 16 (B) is
A semicircle having a vertical edge 7 extending linearly in parallel with the spine 4S on the edge 4K side, and having a radius R of 1/2 the space between the top and bottom of the booklet 2 above and below the vertical edge 7 The curved edges 8 are each connected. The front cover 4 of FIG.
It is formed by arranging two semicircular curved edge portions 8 having a radius R of 1/4 the dimension between the top and bottom of the booklet portion 2 in the top-bottom direction. The front cover 4 of FIG. 16D is formed by arranging two elliptical curved edge portions 8 extending in a vertical direction from the spine 4S side to the edge 4K side in a convex shape. FIG.
The front cover 4 of (E) is formed by curved edges 8 extending from the back side and the top and bottom sides, and the curved edge portions 8 are freely designed curves or a plurality of curves are freely combined. , Or a combination of a curved line and a straight line is formed in an uneven shape. In addition, in FIGS. 16C to 16D, a portion 805 that is most protruded toward the forehead 4K side in the curved edge portion 8
A line 807 connecting the lines is formed so as to be parallel to the back 4S,
In FIG. 16D, the line 807 is formed so as to extend linearly in the state in which the front cover 4 is closed, passing through the edge 2K of the booklet section 2 and parallel to the edge 2K. FIG. 16 (A)
According to the front cover 4 shown in (E) to (E), it is possible to prevent corner bending of the upper and lower corners of the front cover 4 on the side of the fore edge 4K.

Next, a seventeenth embodiment will be described with reference to FIG. FIG. 17 is an explanatory view of a book to which the seventeenth embodiment is applied, (A) is a perspective view of a book in which the first and second cover pieces are closed, and (B) is a book in which the first cover piece is opened. Perspective view,
(C) shows the perspective view of the book which opened the 1st and 2nd cover.
The book 1 is composed of a booklet section 2 and a cover sheet 3. Cover 3
Is composed of a front cover sheet 4 arranged on one surface side of the booklet section 2 and a back cover sheet 5 arranged on the other surface side of the booklet section 2, and constitutes one of the front cover sheet 4 and the back cover sheet 5. The pieces of paper are bound on the spine 2S of the booklet section 2 by a perfect binding method or a saddle stitching method. In the drawings, an upward convex curved arrow indicates a valley fold, and a downward convex curved arrow indicates a mountain fold.

The front cover 4 is a first cover piece 21 connected to the back cover 5 on the spine 2S side, and a first cover piece 21 folded back from the first cover piece 21 on the front edge 2K side of the booklet section 2 via a first fold line 31. Two
It is composed of a cover sheet 22. The first cover sheet piece 21 is formed with a width smaller than that of the booklet portion 2 so that the first folding line 31 portion is not cut during the three-way cutting. The second cover piece 22 is smoothly folded, and has a width almost the same as that of the first cover piece 21 so that the second cover piece 22 does not project outside the booklet portion 2 when folded back. Is also formed with a slightly smaller width. In this embodiment, the first and second
The top and bottom of the cover sheets 21 and 22 are formed to have a size that matches the top and bottom of the booklet portion 2, and the second cover sheet 22 has the linear upper and lower horizontal edge portions 6 and the first and second horizontal edge portions 6 as in FIG. A straight vertical edge portion 7 located at a position opposite to the fold line 31, a vertical horizontal edge portion 6, and a curved edge portion 8 connecting the upper and lower sides of the vertical edge portion 7 in an arc shape.

As shown in FIG. 17C, the second cover sheet 22 is mountain-folded from the first fold line 31 to form the first cover sheet 21.
17 (B), and in this state, the first cover sheet 21 is folded from the back side onto the sheet piece 201 located at the uppermost position of the booklet section 2 in FIG. 17 (A). In this state, the inner surface of the second cover piece 22 becomes the outermost cover of the book. Book 1 having a cover with such a configuration
As shown in FIG. 17A, the first and second cover sheets 21 and 2 are
2 is folded on the paper piece 201 of the booklet section 2 and then cut by three-sided cutting. At the time of three-sided cutting, the top and bottom of the back cover 5 and the first and second cover sheet pieces 21 and 22 are top and bottom of the booklet section 2. Is cut with.

According to such a front cover sheet 4, it is possible to prevent the corners of the upper and lower corners of the end portion of the front cover sheet 4 from being bent. Further, since the front cover 4 is composed of two pieces, that is, a first cover piece 21 and a second cover piece 22 having a width slightly smaller than the width of the booklet portion 2, the width of the booklet portion 2 is different from the conventional one. Compared with a cover consisting of a single piece of paper with the same width as the above, it is possible to increase the practical value of the cover and add fun to the cover, motivate consumers to purchase and sell books. Can be increased.

Further, when the first cover piece 21 and the second cover piece 22 are opened, the first cover piece is the first and
The width obtained by adding the width of the cover sheet 21 and the width of the second cover sheet 22 is 1 on the outer surface or the inner surface of the first and second cover sheets 21 and 22.
It can be configured as one surface. Similarly, the width of the paper piece 201 of the booklet section 2 plus the width of the inner surface of the first and second cover pieces 21 and 22 or the width of the outer surface of the back cover sheet 5 to the first and second cover pieces. The width obtained by adding the widths of the outer surfaces of 21 and 22 is 1
It can be configured as one surface. The function of this surface, in particular, the function of the inner surface of the first and second cover sheets 21 and 22 has been conventionally performed by arranging a folded page on the next page of the cover sheet. A large surface can be formed in the conspicuous part, and the cover is opened at the very beginning, so that the use value and practical value of the cover itself are significantly increased. Further, the first and second cover sheets 2
The inner surface of 1, 22 is, for example, a special page, a gravure photo page,
It can be used as a table of contents page, announcement page, etc. By increasing the space, the degree of freedom in character size, photo layout, etc. can be increased, and by making it easier to open, it is easier for consumers to see, and consumers can use it more than conventional folding pages. It is possible to attract the attention of consumers, motivate consumers to purchase, and increase the sales volume of books. When using the inner surfaces of the first and second cover pieces 21 and 22 for public notices, etc., it becomes possible to post public notices in a larger space in a portion that draws more attention from consumers, thereby increasing the revenue of public notices. It is also possible to plan.

Further, a continuous picture pattern is applied to the outer surface or the inner surface of the first and second cover pieces 21 and 22, or the paper piece 201 of the booklet portion 2 and the first and second cover pieces 21 and 22 are attached. The inner surface, or the outer surface of the back cover 5 and the first and second cover pieces 2
A continuous pictorial pattern may be provided over the outer surfaces of the Nos. 1 and 22. In this case, as shown in FIG. 17 (B), with only the first cover sheet 21 opened, a picture pattern continuous with the paper sheet 201 is applied to the outer surface of the second cover sheet 22 or the first cover sheet 21.
May be formed on the inner surface of the back cover 5, or a picture pattern continuous to the outer surface of the back cover 5 may be attached to the outer surface of the first cover piece 21 or the inner surface of the second cover piece 22. Of course, a piece of paper, the first and second cover pieces 2
You may make it attach a different picture pattern to every 1 and 22.

Further, the second cover sheet 22 is mountain-folded from the first fold line 31 and folded on the outer surface of the first cover sheet 21, and in this state, the first cover sheet 21 is placed on the top of the booklet section 2. When folded on 201, the second cover piece 22 can be easily opened when the purchaser browses with one hand at the store.
Further, in this embodiment, since the widths of the first and second cover sheets 21 and 22 are formed to be slightly smaller than the width of the booklet portion 2, the first and second cover sheets 21 and 22 are formed into the sheet pieces 201. In the state of being folded up, the upper surface of the book 1 does not have unevenness that hinders stacking, and therefore a large number of books 1 can be stacked and handling becomes convenient.

Next, an eighteenth embodiment will be described. FIG. 18 is an explanatory diagram of a book to which the 18th embodiment is applied.
Is a perspective view of a book with the first to third cover pieces closed, (B)
Shows a perspective view of a book with the first to third covers open. 18th
In the book 1 according to the embodiment, the second cover on the front cover 4 of the seventeenth embodiment is used.
The third cover piece 23 is added to the cover piece 22 on the back side of the book via the second fold line 32. The first cover sheet piece 21 is formed with a width smaller than that of the booklet portion 2 so that the first folding line 31 portion is not cut during the three-way cutting. The second and third cover strips 22 and 23 are smoothly folded, and have substantially the same width as the first cover strip 21 so that they do not project outside the booklet portion 2 when folded back, or
The width is gradually reduced.

In the eighteenth embodiment, the third cover sheet 23 is replaced by the second cover sheet 23.
Folded along the broken line 32, these second and third valley-folded
The cover pieces 22 and 23 are mountain-folded along the first fold line 31, and then,
Booklet 2 by folding the first to third cover pieces 23 from the back side
The third cover sheet 23 is folded on the topmost sheet piece 201, and the outer surface of the third cover sheet 23 becomes the outermost cover sheet of the book. According to the eighteenth embodiment, as in the seventeenth embodiment, the front cover 4
It is possible to prevent the corners of the upper and lower corners of the edge of the cover from being bent, and it is possible to remarkably increase the use value and practical value of the cover itself, and to add fun and the like to the cover. In addition, a continuous picture pattern is attached to the outer surface or the inner surface of the first to third cover sheets 21, 22, 23, or the sheet piece 201 of the booklet section 2 and the first to third cover sheet pieces 21, 22, 23. A continuous picture pattern may be provided on the inner surface of the back cover 5, or on the outer surface of the back cover 5 and the outer surfaces of the first to third cover pieces 21, 22, and 23. In this case, as in the seventeenth embodiment, with only one or two cover pieces open, a picture pattern continuous with another cover piece, paper piece or back cover 5 may be attached. . In addition, in the eighteenth embodiment, when the purchaser browses with one hand at the store, the second and third cover sheets 2
2, 23 can be easily opened, and the first to third cover sheets 21,
When the sheets 22 and 23 are folded on the piece of paper 201, the top surface of the book does not have irregularities that hinder the stacking,
Therefore, a large number of books can be stacked and the handling becomes convenient.

Next, a nineteenth embodiment will be described. 19A and 19B are explanatory views of a book to which the nineteenth embodiment is applied. FIG. 19A is a perspective view of the book in which the first to fourth cover sheets are closed, and FIG. 19B is the first to fourth cover sheets. Figure 3 shows a perspective view of a book. In the book 1 according to the nineteenth embodiment, the fourth cover piece 24 folded back through the third fold line 33 on the fore edge side of the book is added to the third cover piece 23 of the front cover 4 of the eighteenth embodiment. . The first cover sheet 21 has a first folded line 31 at the time of three-way cutting.
The width is smaller than that of the booklet portion 2 so that the portion is not cut. Second to fourth cover pieces 22, 23, 24
Has a width substantially the same as that of the first cover sheet 21 or a width that gradually decreases so as not to project outward from the booklet portion 22 when folded smoothly. In the nineteenth embodiment, the fourth cover piece 24 is mountain-folded at the third folding line 33, the third and fourth cover pieces 23, 24 are valley-folded at the second folding line 32, and the second to fourth cover pieces 22, 23,
24 is mountain-folded at the first broken line 31, and then the first to fourth
The cover pieces 21, 22, 23, 24 are valley-folded from the back side and folded on the paper piece 201 located at the top of the booklet portion 22,
The inner surface of the fourth cover piece 24 serves as the cover located on the outermost side of the book.

According to the nineteenth embodiment, it is possible to prevent the corners of the upper and lower corners of the edge of the front cover sheet 4 from being bent, and the use value and practical value of the front cover sheet are significantly enhanced, which is interesting. It is possible to add the size and the like to the cover. Further, a continuous picture pattern is applied to the outer surface or the inner surface of the first to fourth cover sheets 21, 22, 23, 24, or the sheet piece 2 of the booklet section 2 is attached.
01 and the first to fourth cover strips 21, 22, 23, 24, or the outer surface of the back cover 5 and the outer surfaces of the first to fourth cover strips 21, 22, 23, 24. May be attached. In this case, as in the first embodiment, with only one, two or three cover pieces opened, a picture pattern continuous with another cover piece, paper piece or back cover sheet 5 is attached. You may. In addition, in the nineteenth embodiment, when the purchaser browses with one hand at the store, the second to fourth cover sheets 22, 23, and 24 are easily opened, and unevenness that hinders stacking on the upper surface of the book. Does not occur,
Therefore, a large number of books can be stacked and the handling becomes convenient.

Next, a twentieth embodiment will be described. FIG. 20 is an explanatory diagram of a book to which the twentieth embodiment is applied.
Is a perspective view of a book with the first and second cover pieces closed, (B)
Shows a perspective view of the book with the first cover sheet open, and (C) shows a perspective view of the book with the first and second cover sheets open. The twentieth embodiment is the first
In the modification of the seventh embodiment, only the shape of the second cover piece 22 is different from that of the seventeenth embodiment. That is, the second cover sheet 22 is
Similar to the seventeenth embodiment, the upper and lower linear horizontal edge portions 6, the linear vertical edge portion 7, and the curved edge portion 8 connecting the upper and lower horizontal edge portions 6 and the vertical edge portions 7 in an arc shape. However, the radius of the arc forming the curved edge portion 8 is set larger than that in the seventeenth embodiment, so that the length of the vertical edge portion 7 is shorter than that in the seventeenth embodiment.

Next, a twenty-first embodiment will be described. FIG. 21 is an explanatory diagram of a book to which the 21st embodiment is applied.
Is a perspective view of a book with the first and second cover pieces closed, (B)
Shows a perspective view of a book with the first to third cover pieces open. Second
1st Example is a modification of 18th Example, and only the shape of the 3rd cover piece 23 differs from the said 18th Example. That is, the third
Like the eighteenth embodiment, the cover sheet piece 23 connects the straight upper and lower horizontal edge portions 6, the straight vertical edge portion 7, and the upper and lower horizontal edge portions 6 and the vertical edge portions 7 in an arc shape. With a curved edge 8 to
The radius of the arc forming the curved edge portion 8 is set to be larger than that of the eighteenth embodiment, so that the length of the vertical edge portion 7 is the first.
It is shorter than that of the eight examples.

Next, a twenty-second embodiment will be described. FIG. 22 is an explanatory diagram of a book to which the 22nd embodiment is applied.
Is a perspective view of a book with the first and second cover pieces closed, (B)
Shows a perspective view of a book with the first to fourth cover sheets open. Second
The second embodiment is a modification of the nineteenth embodiment, and is different from the nineteenth embodiment only in the shape of the fourth cover sheet 24. That is, the fourth
Like the nineteenth embodiment, the cover sheet piece 24 connects the upper and lower straight horizontal edge portions 6, the straight vertical edge portion 7, and the upper and lower horizontal edge portions 6 and the vertical edge portions 7 in an arc shape. With a curved edge 8 to
The radius of the arc forming the curved edge portion 8 is set to be larger than that of the nineteenth embodiment, so that the length of the vertical edge portion 7 is the first.
It is shorter than that of the ninth embodiment.

In the embodiment, the case where the present invention is applied only to the front cover 4 has been described.
Can be applied to only the front cover 4 and the back cover 5 at the same time.

[0047]

As is clear from the above description, according to the present invention, it is possible to prevent the corners of the cover from being bent, enhance the practical value of the cover, and add fun or the like to the cover. It will be possible to ventilate the willingness to buy and increase the sales volume of books.

[Brief description of drawings]

1A to 1F are explanatory views of a book to which the first embodiment is applied, respectively, and are perspective views of a book with an open cover.

2A to 2F are explanatory views of a book to which the second embodiment is applied, respectively, and are perspective views of the book with the cover opened.

FIGS. 3A to 3F are explanatory views of a book to which the third embodiment is applied, and are perspective views of the book with the cover opened.

FIGS. 4A to 4F are explanatory views of a book to which the fourth embodiment is applied, respectively, and are perspective views of the book with the cover opened.

5A to 5F are explanatory views of a book to which the fifth embodiment is applied, respectively, and are perspective views of the book with the cover opened.

6A to 6F are explanatory views of a book to which the sixth embodiment is applied, respectively, and are perspective views of the book with the cover opened.

7A to 7F are explanatory views of a book to which the seventh embodiment is applied, respectively, and are perspective views of the book with the cover opened.

8A to 8F are explanatory views of a book to which the eighth embodiment is applied, and are perspective views of the book with the cover opened.

9A to 9F are explanatory diagrams of a book to which the ninth embodiment is applied, respectively, and are perspective views of the book with the cover opened.

10A to 10F are explanatory views of a book to which the tenth embodiment is applied, respectively, and are perspective views of the book with the cover opened.

11A to 11F are explanatory views of a book to which the eleventh embodiment is applied, respectively, and are perspective views of the book with the cover opened.

12A to 12F are explanatory views of a book to which the twelfth embodiment is applied, respectively, and are perspective views of the book with the cover opened.

13A to 13F are explanatory views of a book to which the thirteenth embodiment is applied, and are perspective views of the book with the cover opened.

14A to 14F are explanatory diagrams of a book to which the fourteenth embodiment is applied, respectively, and are perspective views of the book with the cover opened.

15A to 15F are explanatory views of a book to which the fifteenth embodiment is applied, respectively, and are perspective views of the book with the cover opened.

16A to 16E are explanatory views of a book to which the sixteenth embodiment is applied, respectively, and are perspective views of the book with the cover opened.

FIG. 17 is an explanatory diagram of a book to which the seventeenth embodiment is applied,
(A) is a perspective view of a book in which the first and second cover pieces are closed,
(B) is a perspective view of the book with the first cover sheet opened, and (C) is the first
FIG. 6 is a perspective view of a book with the second cover sheet opened.

FIG. 18 is an explanatory diagram of a book to which the eighteenth embodiment is applied,
(A) is a perspective view of a book in which the first to third cover pieces are closed,
(B) is a perspective view of a book in which the first to third cover sheets are opened.

FIG. 19 is an explanatory diagram of a book to which the nineteenth embodiment is applied,
(A) is a perspective view of a book in which the first to fourth cover pieces are closed, and (B) is a perspective view of a book in which the first to first to fourth cover pieces are opened.

FIG. 20 is an explanatory diagram of a book to which the twentieth embodiment is applied,
(A) is a perspective view of a book in which the first and second cover pieces are closed,
(B) is a perspective view of the book with the first cover sheet opened, and (C) is the first
FIG. 6 is a perspective view of a book with the second cover sheet opened.

FIG. 21 is an explanatory diagram of a book to which the twenty-first embodiment is applied,
(A) is a perspective view of a book in which the first to third cover pieces are closed,
(B) is a perspective view of a book in which the first to third cover sheets are opened.

FIG. 22 is an explanatory diagram of a book to which the 22nd embodiment is applied,
(A) is a perspective view of a book in which the first to fourth cover sheets are closed,
(B) is a perspective view of a book in which the first to fourth cover sheets are opened.

[Explanation of symbols]

1 bottle 2 Booklet section 3 cover 4 front cover 6 lateral edges 7 Vertical edge 8 curved edges 21 First cover sheet 22 Second cover sheet 23 Third cover sheet 24 Fourth cover page

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-239062 (JP, A) Actual opening 2-109699 (JP, U) Actual opening Sho 48-3423 (JP, U) Actual opening 3- 126200 (JP, U) Actual Open Flat 3-31976 (JP, U) Actual Open Sho 61-109768 (JP, U) Actual Open Sho 62-5962 (JP, U) Actual Open Sho 50-90724 (JP, U) Jikkou 37-7811 (JP, Y1) Jikkō 32-15614 (JP, Y1) Jikkō 39-10054 (JP, Y1) Jikkō 12-11846 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) B42D 1/00-3/18

Claims (26)

(57) [Claims] 1. A structure of a book cover comprising a front cover and a back cover arranged outside a booklet, wherein one of the front cover and the back cover is connected to the other of the front cover and the back cover at the back side. And a second cover piece that is folded back from the first cover piece through the first fold line on the front side of the booklet portion, and the second cover piece is on the top side of the booklet portion. The upper lateral edge portion, the lower lateral edge portion located on the ground side, the vertical edge portion located on the side opposite to the first fold line, and the upper horizontal edge portion or the lower horizontal edge portion and the vertical edge portion. A book cover characterized in that it has curved edges that connect in a curved manner. 2. A structure of a book cover comprising a front cover and a back cover arranged on the outside of a booklet, wherein one of the front cover and the back cover is connected to the other of the front cover and the back cover at the back side. The first cover piece, the second cover piece that is folded back from the first cover piece through the first fold line on the front side of the booklet part, and the second fold line from the second cover piece on the back side of the booklet part. And a third cover piece folded back through the third cover piece, the third cover piece including an upper lateral edge portion located on the top side of the booklet portion, a lower lateral edge portion located on the ground side, and the second fold line. A cover of a book, comprising a vertical edge located on the opposite side and a curved edge connecting the upper horizontal edge or the lower horizontal edge with the vertical edge in a curved shape. 3. A structure of a book cover comprising a front cover and a back cover arranged outside a booklet part, wherein one of the front cover and the back cover is connected to the other of the front cover and the back cover at the back side. The first cover piece, the second cover piece that is folded back from the first cover piece through the first fold line on the front side of the booklet part, and the second fold line from the second cover piece on the back side of the booklet part. It is composed of a third cover piece that is folded back through the booklet portion and a fourth cover piece that is folded back from the third cover sheet through a third fold line on the front side of the booklet portion, and the fourth cover sheet is the top of the booklet portion. Side upper side edge part, a lower side edge part located on the ground side, a vertical edge part located on the side opposite to the third folding line, the upper side edge part or the lower side edge part and a vertical edge part A cover of a book, which is provided with a curved edge portion that connects and in a curved shape. 4. The book cover according to claim 1, wherein the curved edge portions are formed above and below the vertical edge portion, respectively. 5. The book cover according to claim 4, wherein curved edge portions formed above and below the vertical edge portion are formed of curved lines having different shapes. 6. The book cover according to claim 1, wherein the curved edge portion is formed in an arc shape. 7. The book cover according to claim 1, wherein the curved edge portion is formed in an elliptical shape. 8. The book cover according to claim 1, wherein the curved edge portion is formed by connecting a plurality of curved lines or connecting a curved line and a straight line. 9. The book according to claim 1, wherein at least one of upper and lower lateral edges of the cover is formed so as to pass through the top or bottom of the booklet with the cover closed. Cover. 10. The book cover according to claim 1, wherein at least one of upper and lower lateral edges of the cover is linearly formed parallel to the top or bottom of the booklet. 11. The cover according to claim 1, wherein at least one of the upper and lower lateral edges of the cover is formed in a curved shape.
The cover of the listed book. 12. The upper and lower lateral edges are formed between the top and bottom of the booklet with the cover closed, and at least the portions pass through the top and bottom of the booklet. , 2 or 3 book cover. 13. The upper and lower lateral edges are each formed as a convex curve on the fore edge side, and a line connecting a portion located on the most fore edge side is formed so as to be parallel to the fore edge of the booklet portion. The cover of the book of item 2. 14. The upper and lower lateral edges are each formed in a convex curve on the back side, and a line connecting the most back side portions is formed so as to be parallel to the back of the booklet section. The cover of the book of item 1 or 3. 15. The book cover according to claim 1, wherein the vertical edge portion of the cover is formed in a straight line in parallel with the front edge of the booklet portion in a state where the cover is closed. 16. The book cover according to claim 1, wherein a vertical edge portion of the cover is formed in a curved shape. 17. The book cover according to claim 2, wherein a vertical edge portion of the cover is formed in a concave-convex shape, and a line connecting a portion most protruding to the edge side is formed parallel to the edge of the booklet portion. . 18. The book according to claim 1, wherein a vertical edge portion of the cover sheet is formed in an uneven shape, and a line connecting a most protruding portion on the back side is formed parallel to the spine of the booklet portion. Cover. 19. The upper lateral edge portion is formed to be convex toward the top side, the lower lateral edge portion is formed to be convex toward the ground side, and the vertical edge portion is formed so as to be recessed to the dorsal side at the fore edge side. Claim 2
The cover of the listed book. 20. The upper lateral edge portion is formed in a convex shape on the top side, the lower lateral edge portion is formed in a convex shape on the ground side, and the vertical edge portion is formed so as to be depressed toward the forehead side on the back side. Claim 1
Or the cover of the book described in 3. 21. The book cover according to claim 1, wherein the upper horizontal edge portion and the vertical edge portion or the lower horizontal edge portion and the vertical edge portion are formed by a single curved line. 22. The upper horizontal edge portion and the upper half portion of the vertical edge portion, and the lower curved portion and the lower half portion of the vertical edge portion are each formed by a single curved line. The cover of the book described in 3. 23. The book cover according to claim 1, wherein the upper and lower horizontal edges and the vertical edges are formed by a single curve. 24. The book cover of claim 1, 2 or 3, wherein the cover has a window formed therein. 25. The book cover according to claim 24, wherein the window is provided with an opening / closing piece that can be opened and closed. 26. In the closed state of the cover sheet, a cover sheet located on the outermost side and a continuous picture pattern are formed over the sheet surface portion of the booklet portion exposed outside the cover sheet portion. , 2 or 3 book cover.