JPH0430710Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a jacket for a flexible disk, and particularly to a color printed jacket for a flexible disk.

Prior Art The hue of conventional jackets for flexible disks (hereinafter simply referred to as "jackets") was usually black in order to satisfy the prescribed characteristics, especially light transmittance. Recently, so-called color jackets that have hues other than black while satisfying the specified characteristics have begun to be commercially available, making it easy to classify and use jackets according to color, and also to make it easier to use for personal computers, With the spread of microcomputers and the like, the purposes for which jackets are used have become more diverse, and color jackets that are printed to suit these purposes have been attracting widespread attention.

Generally, when manufacturing such a color printed jacket, printing is performed in a desired color on one side of the jacket's surface of the plastic sheet, which is the material for the jacket. Furthermore, after printing predetermined characters and patterns,
It is manufactured by cutting out this plastic sheet, folding it, and melt-bonding the flaps. That is, when manufacturing this color printing jacket, for example, as shown in FIG. Half side 1 that will be the surface of the upper jacket
The necessary colors, letters, patterns, _etc. (hereinafter referred to as "printed patterns") 3 ₁ and 3 ₂ are printed on 1, and then a liner is pasted on the other side. As shown in Figure 5, die cutting is performed,
In addition to forming flaps 4 ₀ and 4 ₁ around the surface 1 ₁ , a half surface forming the surface of the jacket (hereinafter referred to as
A die-cut sheet 7 is formed by punching out a central window 5, a head window 6, etc. on the half surface (hereinafter referred to as the "back side") 1 ₁ that forms the "front side" (hereinafter referred to as the "front side") 1 1 and the back side thereof ₍ hereinafter referred to as the "back side"). , then, as shown in FIGS. 6 and 7, fold along the bending line 2 at the center in the length direction, and then fold the surface side 1 ₁
Of the flaps 4 ₀ and 4 ₁ formed around the plastic sheet 1 , the flap 4 _{1 excluding 4 0 is} fused onto the back side 1 ₂ of the plastic sheet 1 to form a bag shape. A disk-shaped magnetic recording medium is housed inside the jacket 8, and the remaining flap ₄₀ is similarly fused to the back side ₁₂ , thereby producing a flexible disk.

However, in such printing and manufacturing methods, the printed patterns 3 ₁ and 3 ₂ in the printing process of the plastic sheet material 1 and the die cutting of the die cutting sheet 7 or the folding line 2 of the jacket 8 are often Fold along, flap 4 ₀ ,
In the folding process of 4 ₁ , printed patterns 3 ₁ , 3 ₂
As a result, the printed area does not match the predetermined position, for example, the printed pattern 3 ₁ is shifted from the front side 1 ₁ , as shown in FIGS. 8 and 9.
A part of the printed pattern 3 ₁ may be missing from the front side 1 ₁ , and the rest of the printed pattern 3 ₁ may be moved to the back side 1 ₂ , or other printed patterns 3 ₂ on the front side 1 ₁ may be missing from the central window 5 _or Problems such as hanging over a part of the head window 6 may occur, and in this way, the positions of the printed patterns 3 ₁ and 3 ₂ on the front side 1 ₁
If the jacket is misaligned as shown in FIG. 8, the quality of the jacket deteriorates and the aesthetic appearance becomes unavoidable. In addition, especially the printed pattern 3
If this is applied to the head window 6 as in ₂ , the printing ink of the printed pattern 3 ₂ around it will peel off and adhere to the surface of the magnetic recording medium, which may adversely affect its performance. It was hot.

Problems to be Solved by the Invention Therefore, in view of the above-mentioned drawbacks in conventionally known jackets, particularly color printed jackets, the present invention has been developed to eliminate these drawbacks and improve the color printing jacket. To obtain a new color printed jacket which prevents the appearance of printing defects on the surface, improves the appearance without impairing the quality of the color printed jacket, and which does not have a risk of adversely affecting the magnetic recording medium. , that is its purpose.

Means for Solving the Problems In order to achieve this object, the present invention has developed a material that can be processed into a bag shape to form a color printed jacket 20 (FIG. 3), as shown in FIG. 1 of the accompanying drawings. The pattern 3 1 has an approximately square-shaped outline smaller by an approximately constant dimension from the periphery of the jacket 20 formed on the front side _{1 1} of the plastic sheet 10 at the same time as the printed patterns 3 ₁ and 3 ₂ . ,3 ₂
This is characterized in that a frame 12 is printed as a reference line for determining the deviation of the printing position with respect to the periphery of the jacket 20.

Function According to the present invention, for example, a square frame 12 is printed as a reference line on the surface of the plastic sheet 10, which is the material of the color printing jacket 20, at the same time as the printing pattern, so that deviations in the printing process can be avoided. can be easily identified visually, and therefore, such defective printing patterns 3 ₁ ,
The diseconomies caused by further transferring the plastic sheet material 10 having 3 ₂ to a die cutting process, etc.
This can be prevented by eliminating it at the printing stage.

Embodiments Hereinafter, the present invention will be described in detail with reference to FIGS. 1 to 3 of the accompanying drawings showing one embodiment thereof.

First, as shown in FIG. 1, a rectangular plastic sheet 10 having the required dimensions, which is the material used in the present invention, has one half that will become the surface of the colored jacket, that is, the plastic sheet 10. On the front side 10 ₁ of 10, there is a bending line 1 as a reference line for determining the deviation of the printing position of the printed patterns 3 ₁ and 3 ₂ with respect to the surrounding area.
At a certain equal distance from the periphery including 1,
A substantially square frame 12 having sides parallel to this periphery is formed by printing at the same time as the printed patterns 3 ₁ and 3 ₂ , and this frame 1 serves as a reference line.
2 as a criterion for determining the deviation of the printing position of the printed patterns 3 ₁ and 3 ₂ with respect to the periphery including the bending line 11 of the plastic sheet 10. In this way, the printed pattern 3 ₁ ,
The plastic sheet material 10 subjected to _3.2 undergoes a conventional process to form a die-cut sheet 13 as shown in FIG. ₀ 4 ₁
By bending these flaps and fusing these flaps to the other half of the plastic material 10, that is, the back side ₁₀₂ , printed patterns ₃₁ and ₃₂ are applied at predetermined positions, as shown in FIG. A colored printed jacket 20 is obtained.

In this way, in the present invention, the jacket 2
Surface 1 of plastic sheet 10 which is the material of
Since the reference line is printed on surface 10 ₁ at the same time as the printed patterns 3 ₁ and 3 ₂ , the printed patterns 3 1 and 3 ₂ on this surface 10 ₁ are
Due to the existence of this reference line 12, the deviation of the printing position with respect to the surrounding area including the fold line 11 of the surface 10 ₁ of 3 ₂ can be easily confirmed visually. It is possible to prevent the waste of discovering defects in the positions of the patterns 3 ₁ and 3 ₂ for the first time in the final finishing stage.

In the above embodiment, the reference line is a substantially square frame 12 having sides parallel to each side of the front surface ₁₀₁ of the plastic sheet 10. Without being limited to the front side 10 ₁ of the sheet 10, on either side 10 ₁ or 10 ₂ of the sheet 10,
It may be a straight line parallel to its periphery, or another straight line or curve, but generally it is a side parallel to the periphery of the front surface side ₁₀₁ of the jacket 20, as shown in FIG. It is convenient to have an approximately square shape with slightly smaller dimensions.

Effects of the Invention The present invention has the above-mentioned structure and operation, so that the printed patterns 3 ₁ and 3 ₂ in the conventional color printed jacket of this type can be easily applied to the surrounding area including the folding line 11 of the plastic sheet 10. The occurrence of defective products due to misalignment of printing positions can be detected in the manufacturing process by inspecting the presence or absence of uneven spacing between the periphery of the jacket and the reference line 12 for determining misalignment of printing positions. It can be detected at an early stage, and therefore has the excellent effect of making it possible to manufacture this type of color printed jacket with high productivity.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a plastic sheet material with a printed pattern for a jacket produced according to the present invention, FIG. 2 is a plan view showing a die-cut sheet obtained by die-cutting it, and FIG. The figure is a front view showing the surface of a colored printed jacket manufactured by folding the die-cut sheet shown in Fig. 2 and gluing the flaps together. FIG. 5 is a plan view showing the material, FIG. 5 is a plan view showing a die-cut sheet obtained by cutting the material, and FIG. 6 is a plan view showing the die-cut sheet obtained by folding the die-cut sheet and gluing a part of the flap. In addition, FIG. 7 is a front view showing the front surface of the desired jacket, and FIG. 7 is a front view showing the back surface thereof.
FIG. 8 is a front view showing the front surface of the jacket with a misaligned printed pattern, and FIG. 9 is a front view showing the back surface thereof. 10... Plastic sheet material with a printed pattern, 11... Bending line, 12... Reference line,
14 ₀ , 14 ₁ ... flap, 20 ... color printed jacket.

Claims (1)

[Claims for Utility Model Registration] 1. Printed patterns 3 ₁ , 3 ₂ are applied to the front side 10 ₁ of a plastic sheet 10 as a material, and then the surface 1 ₁ is formed by cutting and bending. In the flexible disk jacket 20 with the printed patterns 3 ₁ and 3 ₂ , on the front side 10 ₁ of the plastic sheet 10,
In addition to printed patterns 3 ₁ and 3 ₂ , these printed patterns 3 ₁ ,
_3. A jacket for a flexible disk, on which a reference line 12 is provided for determining the deviation of the printing position with respect to the periphery including the bending line 11 on the front side ₁₀₁ of the plastic sheet 10 of 32. 2. The plastic sheet 10 has a substantially rectangular shape, and a reference line 12 is placed at a certain distance from the bending line 11 at the center of the plastic sheet 10 in the longitudinal direction and at _each periphery of the front side 101. A jacket for a flexible disk according to claim 1, which is formed by a substantially square profile having parallel sides.