JPH09136292A - Cutting method in bookbinding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To minimize the occurrence of wrinkles or cracks on a back cover when the back cover is cut, by cutting specified positions on the top and the bottom by a cutter of a cutting machine after a slit is previously formed in the back cover part of an allowance for cutting. SOLUTION: An allowance 5 for cutting is provided between a cutting position 15 on the top and an adjacent cutting position 16 on the bottom. A slit 7 is formed on the back cover part of the allowance 5 for cutting by a circular rotary cutter. Next, the cutting position 15 on the top in a memo-note continuous body 14 is cut by a cutter 8 of a cutting machine. In this case, the inclined surface of the cutter 8 is directed to the side where the slit 7 is provided. Although wrinkles or cracks occurs on the back cover 4 by this cutting, these wrinkles or cracks are interrupted by the slit 7, and thus they cannot cross and extend over the slit 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting method for binding office booklets such as notebooks and memo pads, or magazines and books.

[0002]

2. Description of the Related Art There are various methods for bookbinding, but in the case of notebooks or memo pads, front and back covers of the same size are placed on both the front and back sides of a stack of paper that is the size of multiple books. And the back cover are overlapped, and they are integrally bound by adhering a series of spine covers to their spines, and then
The method of cutting the position of each heaven, ground, and edge is adopted.

[0003]

2. Description of the Related Art When the conventional cutting method as described above is carried out, the spine cover is also cut together especially when the positions of the top and the ground are cut. By the way, since the cutter of the cutting machine has a thickness and one side is inclined, the cutting surface of the spine cover 4 which comes into contact with the inclined surface 9 of the cutter 8 when cutting with the cutter as shown in FIG. 10 was pushed in the lateral direction and was displaced, and due to the shear stress at this time, long wrinkles 11 and cracks 12 were sometimes generated on the spine cover 4. Then, if the wrinkles 11 and the cracks 12 occur in the finished product, there is a problem that the product is not a product.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, a novel cutting method capable of preventing wrinkles and cracks generated on the spine cover when cutting the spine cover to a minimum and preventing defective products. For the purpose of providing.

[0005]

In order to achieve the above object, a cutting method in bookbinding of the present invention is such that a front cover 2 and a back cover 3 are superposed on both front and back surfaces of a bundle 1 of contents. Then, when the back cover 4 is adhered to their backs to integrally bind them and then the positions of the heaven and the ground are cut, a small cutting margin is provided outside each cutting position of the heaven and the ground. 5, the slit 7 is formed in advance on the spine cover portion of the cutting margin 5 by the rotary cutter 6, and then the predetermined positions of the top and the bottom are cut by the cutter 8 of the cutting machine. .

[0006]

When the slit 7 is formed in the narrow cutting margin 5 and the predetermined positions of the top and the ground are cut by the cutter 8 of the cutting machine, wrinkles 11 and cracks 12 occur in the cutting margin 5, but the wrinkles 11
The crack 12 is blocked by the slit 7 and does not cross the slit 7. Therefore, the place where the wrinkles 11 and the cracks 12 are generated can be limited to the narrow part of the cutting margin 5, and the product on the opposite side of the slit 7 can be prevented from being defective.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. Note that this embodiment is an embodiment for binding the memo pad 13 as shown in FIG. 7, but the present invention is not limited to this, and a notebook or the like, other office booklets,
Alternatively, it can be applied to magazines and books.

First, as shown in FIG. 1, a front cover 2 and a back cover 3 of the same size are superposed on both the front and back surfaces of a bundle 1 of sheets of paper having a size corresponding to a plurality of volumes. A series of notepads 14 are formed by adhering a series of spine covers 4 on the back of the sheet so that they are integrally bound together, and a plurality of the notepads 14 are stacked. The spine cover 4 can be made of paper, cloth, synthetic resin sheet, or the like.

Next, as shown in FIG. 2, the top cutting position 15 and the ground cutting position 16 in the memo pad continuum 14 described above.
A small width cutting margin 5 is provided on the outer side of each. That is, the cutting margin 5 is provided between one top cutting position 15 and the ground cutting position 16 adjacent thereto. The width of the cutting margin 5 is about 3 to 10 mm. Then, a slit 7 is formed on the spine cover portion of the cutting margin 5 with a circular rotary cutter 6. The slit 7 has a width of about 1 to 3 mm and a length of about 10 to 15 mm.

Next, as shown in FIG. 3, the memo pad continuum 1
The top cutting position 15 in 4 is cut by the cutter 8 of the cutting machine. In this case, as shown in FIG.
The inclined surface 9 of is directed toward the side where the slit 7 exists. By this cutting, wrinkles 11 and cracks 12 are generated on the spine cover 4, but these are blocked by the slits 7 and the slits 7
It does not extend beyond.

Next, as shown in FIG. 5, the ground cutting position 1
6 is cut by the cutter 8 of the cutting machine and the cutting margin 5 is cut off. Also in this case, the inclined surface 9 of the cutter 8 is cut toward the side where the slit 7 exists. As a result of this cutting, as shown in FIG. 6, the cutting of a plurality of individual memo pads 13 is completed. It should be noted that the trimming of the small edge is irrelevant to the present invention, and the description thereof will be omitted.

[0012]

The present invention is as described above, and the slits 7 are provided in advance with the slits 7 to cut wrinkles 11 and cracks 12 generated on the spine cover 4 when the positions of the top and the ground are cut. Since it can be blocked, the product on the opposite side of the slit can be prevented from becoming defective. Also, wrinkle 1
Since the lengths of the cracks 1 and the cracks 12 can be minimized by blocking the slits 7 with the slits 7, it is possible to reduce the width of the cutting margin 5 that is cut off when the wrinkles 11 and the cracks 12 occur. Waste of material can be eliminated.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state before stacking a plurality of memo pad continuous bodies and cutting them.

FIG. 2 is a perspective view showing a state in which a slit is formed by a rotary cutter.

FIG. 3 is a perspective view showing a state in which the top position is cut by a cutter of a cutting machine.

FIG. 4 is a front view showing a state in which the top position is cut by the cutter of the cutting machine.

FIG. 5 is a perspective view showing a state in which a ground position is cut by a cutter of a cutting machine.

FIG. 6 is a perspective view showing a state in which cutting has been completed.

FIG. 7 is a perspective view of a completed memo pad.

FIG. 8 is a front view showing a conventional cutting process.

[Explanation of symbols]

 1 Bundle of paper 2 Front cover 3 Back cover 4 Back cover 5 Cutting allowance 6 Rotating cutter 7 Slit 8 Cutter 9 Inclined surface 10 Cutting surface 11 Wrinkles 12 Cracks 13 Notepad 14 Notepad Continuum 15 Cutting of the sky Position 16 Cutting position of the ground

Claims (1)

[Claims] 1. A front cover 2 and a back cover 3 are superposed on both front and back surfaces of a bundle 1 of contents, and a spine cover 4 is adhered to their spines to integrally bind them. When cutting the position of heaven and earth after
A narrow cutting margin 5 is provided outside each cutting position of the top and bottom, and a slit 7 is formed in advance on the spine cover portion of the cutting margin 5 by the rotary cutter 6, and then the predetermined position of the top and bottom is set. A cutting method in bookbinding, which comprises cutting with a cutter 8 of a cutting machine.