JP2001139055A - Packing structure for planographic printing block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packing structure for planographic printing block wherewith a bundle of planographic printing blocks in large quantities can be protected and packing and unpacking of the bundle can be executed easily. SOLUTION: A bundle 58 for mounting packed in an inner package mounted on a mounting member 32 is fixed with fixing belts 38 with corner pads 34 applied so that each of broad parts 62 and each of narrow parts 64 thereof are brought into contact respectively with the front 58F and the laterals 58S of the bundle while a front pad 36 applied so as to be fitted to the front 58F approximately at the center of the front. Since the corner pad 34 and the front pad 36 are all small-sized and lightweight as compared with conventional end plates, works for packing, unpacking and recovery can be executed easily.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lithographic printing plate packaging structure, and more particularly to a lithographic printing plate packaging structure for collectively handling a large number of lithographic printing plates.

[0002]

2. Description of the Related Art Recent plate making methods (including electrophotographic plate making methods)
Lithographic printing plates (photosensitive printing plates, heat-sensitive printing plates, etc.), which are widely used to facilitate the automation of the plate making process
Is formed by coating a photosensitive layer or a heat-sensitive layer on a single thin support (such as an aluminum plate).

[0003] When handling this lithographic printing plate in order to reduce the number of times of handling and to carry and store at low cost,
In some cases, a large number of planographic printing plates are stacked in the thickness direction to form a bundle of planographic printing plates, and the bundle is loaded and packaged on a loading member such as a pallet.

FIG. 9 shows an example of such a packing structure (see Japanese Patent Application Laid-Open No. 3-73946).

[0005] In this packing structure 110, after a bundle 118 of required number of printing plates 116 is placed on an end plate 114 erected with respect to a bottom plate 112, another end plate 120 is attached to the bundle 118. The bundle is fixed on the front side, and then the end plate 114 and the end plate 120 are fastened by bolts 122 to fix the bundle 118. In addition, since both the photosensitive printing plate and the heat-sensitive printing plate are in the form of one thin plate,
If the corners or sides are damaged or deformed, problems such as blurring of an image when developed by exposure to light or heat, or unevenness of ink when printed are likely to occur. Therefore, as can be seen from FIG. 9, the end plate 120 is larger in size than the printing plate 116, and protects the printing plate 116 so that the printing plate 116 is protected.
The corners and sides are not scratched or deformed.

However, the size of the end plate 120 is larger than that of the printing plate 116, so that the end plate 120 comes into contact with the entire surface of the bundle 118, so that the weight increases and the bundle 118 is fixed or released. Handling was inconvenient at the time, when transporting, or when collecting the end plate 120.

[0007]

SUMMARY OF THE INVENTION In view of the above fact, the present invention provides a lithographic printing plate capable of packing and protecting a large stack of lithographic printing plates and capable of easily packing and unpacking the stack. It is an object to obtain a printing plate packaging structure.

[0008]

According to the first aspect of the present invention, a stacking member capable of stacking a stack of a plurality of lithographic printing plates stacked in the thickness direction, and a stacking member stacked on the stacking member. The loading member is continuously applied over at least two surfaces including the loading bundle front surface corresponding to the surface of the planographic printing plate, and a contact member that contacts a part of these surfaces, and the loading bundle and Fixing means for fixing the contact member to the loading member.

That is, in a state where the stack is loaded on the stacking member, the hitting member is continuously applied over at least two surfaces including the front of the stack. In other words, these two
The contact members are arranged near the sides (corners) between the surfaces. For this reason, the lithographic printing plates constituting the stack are reliably protected by the contact members, and scratches and deformation of the lithographic printing plates are prevented. In addition, since the stack and the abutment member are fixed to the stack member by the fixing means, there is no possibility that the stack is inadvertently shifted with respect to the stack member, or separated or dropped from the stack member. And a stack like this,
That is, since a large number of planographic printing plates are fixed to the loading member, a large number of planographic printing plates can be handled with a small number of handling times. The contact member may be in contact with at least two surfaces including the front of the stack, and may be in contact with three adjacent surfaces.

The contact member makes contact with at least two of the applied surfaces only in part of these surfaces, that is, in the vicinity of the side between the surfaces, but not in contact with the entire surface. For this reason, as compared with the conventional end plate in contact with the entire surface of the stack, the backing plate becomes smaller and lighter, and packing and unpacking become easier. Also, when the contact member is collected after use, the collection is facilitated.

The fixing means is not particularly limited as long as it can fix the stacking stack and the contact member to the loading member as described above. Can be a fastening member for fastening the stacking bundle and the stacking bundle from the outside in a state where the stacking bundle is applied to the stacking bundle. Thereby, packing can be easily performed only by fastening with the fastening member. Also, when unpacking, the tightening by the tightening member is only released, so that the unpacking operation becomes easy.

According to the invention described in claim 1 or 2,
4. A pressing member provided at substantially the center of the front of the stack of stacks loaded on the stacking member and receiving the tightening force from the fastening member to press the stack inward as set forth in claim 3. , Can be configured.

When the tightening force of the tightening member acts in an inward direction along the surface of the lithographic printing plate constituting the stack,
The lithographic printing plate tends to be bent by this force, but a pressing member is provided substantially at the center of the front of the stack, that is, at the approximate center of the surface of the lithographic printing plate, and the pressing member applies a tightening force from the tightening member. Then, the stack is pressed inward. For this reason, the lithographic printing plate is prevented from bending.

The shape of the contact member according to any one of claims 1 to 3 may be such that the contact member is adjacent to the front of the stack and the front of the stack as described in claim 4. The shape can be such that it contacts at least two of the stacked bundle side surfaces and a contact area with the stack bundle front surface is larger than a contact area with the stacked bundle side surface. Accordingly, the area where the tightening force of the tightening member acts on the planographic printing plate is larger at the front of the stack than at the side of the stack. For this reason, it becomes possible to more effectively prevent the bending of the lithographic printing plate, and to prevent deformation by dispersing a local load on the surface of the lithographic printing plate.

Further, in the invention according to any one of claims 2 to 4, as described in claim 5, a fastening force from the fastening means is applied to at least one of the contact member and the pressing member. May be provided to prevent deformation of the contact member or the reinforcing member due to the above.

Thus, the deformation of the contact member or the pressing member due to the tightening force from the tightening member can be prevented, and the packing state can be reliably maintained. Also, when the contact member or the pressing member is reused, since these members are not deformed, they can be reused without any trouble.

In the invention according to any one of claims 2 to 5, as described in claim 6, between at least one of the contact member and the pressing member and the stack, A dispersing member for dispersing the tightening force of the tightening member acting on the stack via the pressing member may be provided.

Thus, the tightening force of the tightening member acting on the stack via the contact member or the pressing member is dispersed and does not act locally, so that the planographic printing plate constituting the stack is prevented from being deformed. be able to.

In the invention according to any one of claims 1 to 6, the direction in which the stack is loaded on the stacking member is not particularly limited. For example, as described in claim 7, the stack is The lithographic printing plates constituting the bundle can be stacked on the stacking member such that the surfaces of the lithographic printing plates have a vertical component.

That is, each of the planographic printing plates is stacked on the stacking member in a state of being set up vertically or obliquely. With this configuration, in a state where the stacking bundle is loaded on the loading member, regardless of the number of lithographic printing plates, the packaging structure has a substantially constant height as a whole, so that the storage structure is located above the lithographic printing plates at the storage location. It can be stored efficiently without wasting space. Further, since the planographic printing plates are stacked with their lower sides aligned by their own weight, the work of loading the planographic printing plates into a plate making machine, for example, becomes easier.

[0021]

FIG. 1 shows a planographic printing plate packaging structure according to a first embodiment of the present invention (hereinafter simply referred to as “packing structure”).
30) is shown. FIG. 2 shows a step of packing the stack 12 of the lithographic printing plate 10 (photosensitive printing plate or heat-sensitive printing plate) by the packing structure 30.

The lithographic printing plate 10 is formed by applying an electrophotographic photosensitive layer (a heat-sensitive layer in the case of a heat-sensitive printing plate) on a thin aluminum support formed in a rectangular plate shape. . Although the shape and the like of the lithographic printing plate 10 are not particularly limited, in the present embodiment, for example, 0.3 mm × 1310
A photosensitive layer or a heat-sensitive layer coated on an aluminum plate of mm × 1050 mm is used.

As can be seen from FIG. 2, a slip sheet 14 for protecting the electrophotographic photosensitive layer, a photosensitive printing plate 10,
Are alternately overlapped in the thickness direction, and protective cardboards 22 are disposed on both end surfaces in the overlap direction.
A stack of zeros 12 is configured. In this embodiment, the basis weight 2 made from bleached kraft pulp is used as the interleaf paper 14.
0 to 45 g / m ² , density 0.7 to 0.85 g / cm ³ , moisture 4 to 6%, Beck smoothness 10 to 800 seconds, PH 4 to 6
Of the lithographic printing plate 10 is adhered to the electrophotographic photosensitive layer. Also, protective cardboard 2
2 is a basis weight of 200 to 1500 g made from waste paper
/ M ² , density 0.7-0.85 g / cm ³ , moisture 4-8
%, A Beck smoothness of 3 to 20 seconds, and a protective cardboard 22 of PH 4 to 6 are used.

The planographic printing plate 1 constituting one stack of bundles 12
The number of zeros is not particularly limited, but may be, for example, 10 to 100 from the viewpoint of efficient transportation and storage. Also, as described above, 10 to 100 lithographic printing plates 1 are used.
When the stack 12 is constituted by 0, it is preferable that the planographic printing plate 10 and the protective cardboard 22 are fixed by a fixing means such as an adhesive tape 24 so as not to be displaced.
In addition, the stack of bundles 12 is increased by more lithographic printing plates 10.
It is also possible to make transportation and storage more efficient (with a smaller number of loads). For example,
The number of lithographic printing plates 10 is about 200 to 2000,
Protective cardboard 22 for every 20 to 100 lithographic printing plates 10
May be inserted. Further, the protective cardboard 22 may be arranged only above and below the stacked planographic printing plates 10. In addition, depending on the type of the lithographic printing plate 10, interleaf paper 1
4. The protective cardboard 22 and the adhesive tape 24 may be omitted.

The packing structure 30 according to the present embodiment
, And the square abutment plate 34 and the surface abutment plate 3 that are applied to the stacking bundle 12 (more precisely, the loaded stacking bundle 58 described later) loaded on the stacking member 32.
6. A fixing belt 3 for fixing the square abutment plate 34 and the surface abutment plate 36 to the loading member 32 by tightening them from outside.
8 (not shown in FIG. 2, see FIGS. 1 and 3).

The loading member 32 has a base 46 formed by connecting a substantially rectangular upper plate 40 and a lower plate 42 with a plurality of block-shaped legs 44. An insertion portion 48 is formed between the legs 44, and a fork of a forklift or a hand lift is inserted into the insertion portion 48, and the loading member 32 is inserted.
Can be lifted. 1 and 2, the leg portion 44 is formed in a long shape along the depth direction (the direction of arrow D) of the base portion 46, and the insertion portion 48 is also formed in the base portion 4.
6 are arranged along the depth direction, for example, as shown in FIG. 4, each leg 44 has a shape divided in the depth direction, and the insertion portion 48 is not only in the depth direction but also in the width direction ( (W arrow direction) so that the fork can be inserted from any direction.

On the upper surface of the upper plate 40 of the base portion 46, a loading table 50 having a substantially wedge-like end surface is fixed. As can be seen from FIGS. 1 and 2, the upper surface of the loading table 50 is inclined with respect to the upper plate 40, and serves as a loading surface 52 on which the loading bundle 12 is loaded.

A flat supporting plate 54 is provided upright from the lower end of the loading surface 52. The loading surface 52 of the support plate 54
The surface on the side is perpendicular to the loading surface 52, and serves as a support surface 56 that supports a part of the load of the loading bundle 12 when the loading bundle 12 is loaded on the loading surface 52.

A plurality (for example, 3 to 100 bundles) of stacking bundles 12 are integrally mounted on the stacking surface 52 in a state of being stacked on the stacking surface 52. In the following, the loaded stack 12 is referred to as a loaded stack 58.

The interior paper 16 is formed by adhering a metal thin film having a predetermined thickness to one rectangular kraft paper having a predetermined size. It is configured by bonding resin layers. In general, a photosensitive printing plate has high photosensitivity, and even if exposed to light in a slight visible light wavelength band, a change occurs in the photosensitive layer. Also, the heat-sensitive printing plate is preferably subjected to appropriate light shielding because the heat-sensitive layer may be degraded by the heat energy of the applied light or the sensitivity may change due to the progress of the reaction. Further, if a sudden change in humidity or temperature is applied, any of the printing plates is disadvantageous in that dew condensation occurs on the photosensitive layer or the heat-sensitive layer to deteriorate the quality, or that the printing plate is adhered to the interleaf paper 14. , Need to be moisture proof. Since the interior paper 16 has a certain light-shielding property and moisture-proof property by being configured as described above, the lithographic printing plate 1
The deterioration of the photosensitive layer or the heat-sensitive layer of the lithographic printing plate 1 is prevented.
0 is maintained at a constant quality. In the present embodiment, the interior paper 1
As an example of 6, a kraft paper having a size sufficient to integrally package the plurality of stacks 12 stacked on the stacking surface 52 and having a 6 to 7 μm aluminum foil adhered thereto is used. ing. The aluminum foil has 10
A low-density polyethylene layer having a thickness of about 70 μm or a black polyethylene film having a thickness of about 70 μm may be attached to the low-density polyethylene layer to improve the light-shielding property and moisture-proof property. Further, if the interior paper 16 can exhibit a certain light-shielding property and moisture-proof property, it is not always necessary to adhere the low-density polyethylene layer and the black polyethylene film.

A plurality of stacked bundles 12 are integrally provided by the interior paper 16, and the ends of the interior paper 16 are fixed to the loading table 50 and the support plate 54 by fixing means such as an adhesive tape 60. , A loaded stack 58 is provided.

The corner contact plate 34 has a substantially L-shaped end surface having a wide portion 62 and a narrow portion 64, and is formed in a long shape as a whole. Then, the wide portion 62 comes into surface contact with the front face 58F of the loaded stack 58 loaded on the loading surface 52,
The narrow portion 64 is in surface contact with the side surface 58S. In addition, the length of the square contact plate 34 is substantially equal to or longer than the height of the loaded stack 58. In the present embodiment, a thickness of 15 mm and a length of 1100
mm, the width of the wide portion 62 is 100 mm, and the width of the narrow portion 64 is 50 m
m wooden board is used.

The surface contact plate 36 is formed of the wide portion 6 of the square contact plate 34.
2 is formed in a long shape that is substantially the same as or thicker than that of FIG. In the present embodiment, the facing plate 36
As an example, thickness 15 mm, width 100 mm, length 11
A 00 mm wooden board is used.

The fixing belt 38 is mounted on the loaded stack 58.
The loaded stack 58, the square plate 34, and the surface plate 36 are placed in a state where the square plate 34 and the surface plate 36
And a length sufficient to be wound around the support plate 54. When the buckle 66 is operated with the fixing belt 38 wound thereon, the fixing belt 38 is gradually tightened, and the loaded stack 58, the square abutment plate 34, the surface abutment plate 36, and the support plate 54 are inwardly moved. Is applied, the loaded stack 58, the square contact plate 34, and the surface contact plate 36 can be easily fixed to the support plate 54. In the present embodiment, a lashing belt having a predetermined strength is used as an example of the fixing belt 38.

Next, the operation of the packing structure 30 of this embodiment will be described.

As shown in FIG. 1, the stack of lithographic printing plates 10 is arranged such that the lithographic printing plates 10 are vertically (with a vertical component) and parallel to the support surface 56. Since the sheets are stacked on the stacking surface 52, the height of the packing structure 30 in the stacked state is substantially constant regardless of the number of the lithographic printing plates 10. For this reason, for example, when the packing structure 30 is stored in a storage place such as a warehouse, by appropriately determining the height of the storage place, it is possible to prevent a useless space from being generated above the stack of bundles 12 and to efficiently perform the processing. Can be stored.

The planographic printing plate 10 is stacked with its lower side aligned along the stacking surface 52 by its own weight. For this reason, for example, when loading the plate making machine using an automatic feeder or the like, the plate can be loaded at an accurate loading position.
In addition, since the lithographic printing plate 10 is easy to hold when it is lifted, the work of transportation and movement is facilitated.

Further, the loading surface 52 is inclined with respect to the upper plate 40, and the loading bundle 12 is also loaded with an inclination at a fixed inclination angle. A part of the load of the stack 12 is supported by the support surface 56. Since the load of the stack 12 is dispersed and supported on two surfaces (two directions) in this manner, the stack 12 and the lithographic printing plate 10 may be inadvertently collapsed or slipped in an unpacked state as described later. Do not fall.

As shown in FIG. 1, in the packed state, the corner contact plate 34 is applied to the side between the front surface 58F and the side surface 58S of the loaded stack 58, and is in surface contact with these two surfaces. . For this reason, even if an object is hit from the outside during transportation or storage, the corners of the lithographic printing plate 10 constituting the stack 12 are protected, and no damage or deformation occurs. Further, even if the fastening force from the fixing belt 38 is applied, the fastening force is dispersed in the height direction by the squaring plate 34, and the corners of the lithographic printing plate 10 (particularly when the fixing belt 38 is positioned). (In the vicinity of the portion where the lithographic printing plate 10 exists), the corners of the lithographic printing plate 10 do not deform. Generally, since the lithographic printing plate 10 is formed in a thin plate shape, if a corner or a side is scratched or deformed, an image is blurred when developed, or the ink becomes uneven when printed. Although a problem may occur, when the lithographic printing plate 10 packed by the packing structure 30 of the present embodiment is used after being transported or stored, since the corners are not damaged or deformed as described above, In addition, it is possible to always obtain a clear image without problems such as blurring of an image during development and unevenness of ink during printing.

When the fastening force from the fixing belt 38 is large, a part of the fastening force is directed inward along the surface of the lithographic printing plate 10 (toward the center in the width direction, as indicated by an arrow F in FIG. 3). ), The lithographic printing plate 10 tends to curve convexly outwardly of the loaded stack 58, as indicated by the two-dot chain line. However, in the present embodiment, the surface contact plate 36 is disposed substantially at the center of the front face 58F of the loaded stack 58, and a part of the fastening force from the fixing belt 38 is
It acts as a pressing force for pressing the substantially center of the lithographic printing plate 10 toward the inside of the loaded stack 58 (in the direction toward the support plate 54). For this reason, the lithographic printing plate 10 is not curved but is maintained in a planar shape.

The wide portion 62 of the square contact plate 34 is in surface contact with the front face 58F of the loaded stack 58, and a part of the fastening force of the fixing belt 38 is reduced by the wide portion 62 of the square contact plate 34. And acts on the front face 58F of the loaded stack 58. Therefore, it is possible to more effectively prevent the lithographic printing plate 10 from being curved. Particularly, in the present embodiment, the wide portion 62 having a relatively larger contact area than the narrow portion 64 is provided.
Is brought into contact with the front surface of the loaded stack 58, so that the lithographic printing plate is more effectively compared with the case where the narrow portion 64 is arranged to contact the front surface 58F of the loaded stack 58, for example. 10 can be prevented from being curved.

Then, in the packing structure 30 of the present embodiment,
The corner contact plate 34 and the surface contact plate 36 for preventing the lithographic printing plate 10 from being scratched or deformed (including curved) are in contact with only a part of the front face 58F of the loaded stack 58. Compared to the case where the end plate that contacts the entire front surface of the stack is used as in the past, unnecessary portions of the end plate are substantially removed and the size is reduced. Board 34
In addition, since the weight of both the surface application plate 36 and the surface application plate 36 is reduced, the packing operation is facilitated. Further, even when unpacking, after opening the fixing belt 38, the square abutment plate 34 and the surface abutment plate 36 may be removed, so that the unpacking operation is also facilitated. Further, when the square abutment plate 34 and the surface abutment plate 36 are collected after use, the collection operation is facilitated.

In a packed state, a large number of lithographic printing plates 10 are used.
Are integrated, so that the number of times of handling the cargo is reduced and the handling is excellent.

FIG. 4 shows a packing structure 70 according to a second embodiment of the present invention. In the second embodiment, the same components, members, and the like as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

In this packing structure 70, the upper plate 40 and the lower plate 4
2 has a loading member 72 connected by the legs 44, but a member corresponding to the loading table 50 of the first embodiment is not fixed to the upper plate 40 of the loading member 72. Then, the stacking bundle 12 (see FIG. 2) is directly loaded on the upper plate 40 so that the planographic printing plate 10 is parallel to the upper plate 40 (that is, substantially horizontally).

In the second embodiment, the square contact plate 34
Is applied to a corner between the upper surface 58U (substantially the same surface as the front surface 58F of the first embodiment) of the loaded stack 58 and the side surface 58S, and is in surface contact with these two surfaces. The surface contact plate 36 is arranged such that the upper surface 5 is parallel to the square contact plate 34.
It is arranged substantially at the center of 8U and is in surface contact with the upper surface 58U. The loaded stack 58, the square contact plate 34, and the surface contact plate 36 are fixed to the upper plate 40 by the fixing belt 38.

In the packing structure 70 of the second embodiment having such a structure, similarly to the first embodiment, the corner contact plate 34 prevents the corners of the lithographic printing plate 10 from being damaged or deformed. Wide portion 6 of surface contact plate 36 and square contact plate 34
2 prevents the planographic printing plate 10 from being curved. Further, the planographic printing plate 1 is
Zero curvature is more effectively prevented.

The square abutment plate 34 and the surface abutment plate 36 are in surface contact with only a part of the upper surface 58U of the loaded stack 58, and are smaller and lighter than the conventional end plate. Unpacking and collection operations are facilitated.

The overall structure of the packing structures 30 and 70 and the specific structures of the square plate 34, the surface plate 36, and the fixing belt 38 are merely examples, and the present invention is not limited to these. Of course.

For example, as shown in FIG.
A reinforcing member 82 having a predetermined rigidity may be provided outside the surface contact plate 36. Since the reinforcing plate 82 reinforces the square abutment plate 34 or the surface abutment plate 36, the deformation (local constriction or overall deformation) generated in the square abutment plate 34 or the surface abutment plate 36 by the fastening force from the fixing belt 38. Curving, etc.) can be prevented. For this reason, when the corner contact plate 34 and the surface contact plate 36 are collected and reused, they can be reused without any trouble.

The size of the reinforcing member 82 is not particularly limited as long as it can reinforce the square abutment plate 34 and the surface abutment plate 36. However, if the required strength can be ensured, the size can be reduced from the viewpoint of weight reduction. Is preferred. For example, when the size of the lithographic printing plate 10, the square contact plate 34, and the surface contact plate 36 is the same as the size exemplified in the first embodiment, the local constriction of the square plate 34 and the surface contact plate 36 In order to prevent this, a thickness of 2.3 mm, a surface width of 15 mm, and a length of 1
An L-shaped iron plate having an end surface of about 00 mm is preferable, and in order to prevent the entire curve, the thickness is 2.3 mm and the surface width is 5 m.
m, an iron plate having an L-shaped end face having a length of about 1000 mm is preferable. Further, a reinforcing member for preventing constriction and a reinforcing member for preventing bending may be used in combination, or one reinforcing member may be used in combination to reduce the number of components constituting the packing structures 30, 70.

Further, as shown in FIG. 7, a cushioning member 84 made of a deformable member may be provided between the square contact plate 34 or the surface contact plate 36 and the loaded stack 58. With this cushioning material 84, the load concentration of the tightening force of the fixing belt 38 acting via the square contact plate 34 and the surface contact plate 36 can be reduced, and the lithographic printing plate 10 can be prevented from being deformed. As a specific example of the cushioning material 84, a rubber plate, a foam material, corrugated cardboard, cardboard, a honeycomb structure paper, or the like can be used. In particular, when the thickness is about 1 mm to 5 m, JIS K63
The hardness in the spring type hardness test specified in 01 is 10
A rubber plate having a degree of about 98 degrees is preferable. Also, the cushioning material 84
May be formed as a separate pair from the square abutment plate 34 or the surface abutment plate 36, or may be integrated with the square abutment plate 34 or the surface abutment plate 36.

The size of the square applying plate 34 is not limited to the above-mentioned size. The size of the square applying plate 34 is at least applied to the corner of the loaded stack 58, and is shifted or dropped from this side by the fastening force from the fixing belt 38. Anything that does not do is fine. From the viewpoint of preventing such displacement and dropping, it is preferable that the size of the square backing plate 34 is large, and conversely, from the viewpoint of reducing the weight, it is preferable that the size is small. To achieve both, for example, the loaded stack 58
The width of the portion in contact with the side surface 58S is 10 mm to 200 m
m, but preferably 20 mm to 100 mm, more preferably 40 mm to 60 mm. Further, the width of the portion that comes into contact with the front face 58F of the loaded stack 58 may be, for example, about 10 mm to 400 mm, preferably 20 mm to 200 mm, and more preferably 50 mm to 150 mm.
The thickness of the square abutment plate 34 is not particularly limited, but if it is thin, it is likely to be deformed (especially curved). Further, the degree of the curvature differs depending on the type and presence or absence of the reinforcing member 82. Considering these, the thickness of the square backing plate 34 may be, for example, about 1 mm to 50 mm in the case of wooden,
Preferably 200 mm, 50 mm to 150 m
m is more preferable.

Similarly, the size of the surface-applying plate 36 is not limited to the above-described one, and the center of the front face 58F of the loaded stack 58 is pressed by receiving the fastening force of the fixing belt 38, and the planographic printing is performed. What is necessary is just to be able to prevent the plate 10 from bending. The larger the width of the surface-applying plate 36, the more effectively the curvature of the lithographic printing plate 10 can be prevented.
It becomes difficult to handle. In addition, when the width is reduced, the handling is excellent, but the facing plate 36 itself is easily deformed.
There is a possibility that the planographic printing plate 10 may be deformed. Considering these, the width of the surface contact plate 36 is 10 mm
~ 400mm, 20mm ~ 200mm
And more preferably 50 mm to 150 mm. The thickness of the surface contact plate 36 depends on the thickness of the square contact plate 34 (particularly, the front face 58F of the loaded stack 58).
The thickness of the planographic printing plate 10 can be more effectively prevented, but the weight increases. Therefore, from the viewpoint of achieving both of them, it is preferable that the thickness is about 10 mm thicker than the thickness of the square backing plate 34.

Further, depending on the relationship with the size of the planographic printing plate 10 and the like, it is also possible to prevent the planographic printing plate 10 from being curved by the wide portion 62 of the squaring plate 34. In such a case, The surface contact plate 36 may be omitted.

The length of the square contact plate 34 and the surface contact plate 36 may be at least a length that can be arranged at the portion where the fixing belt 38 is applied. For example, it is sufficient that the length is longer than the height of the loaded stack 58. However, from the viewpoint of reducing the overall height of the packing structure 30, it is preferable that the height is substantially equal to the height of the loaded stack 58.

The square contact plate 34 and the surface contact plate 36
If the fixing belt 38 is arranged at least in such a portion, the fixing belt 38 does not necessarily need to be continuous in the height direction.
That is, as shown in FIG. 7, as long as an area capable of dispersing the tightening force of the fixing belt 38 to such an extent that the planographic printing plate 10 is not deformed is secured as the contact area with the loaded stack 58. In addition, portions other than the vicinity of the portion where the fixing belt 38 is engaged (in the case shown in FIG. 7, the substantially central portion in the height direction) may be omitted to further reduce the weight.

Further, as shown in FIG.
And the surface contact plate 36 may be divided in the height direction, and an integral contact plate 86 configured to be integrally continuous in the width direction may be used. As in the first embodiment, when the square contact plate 34 and the surface contact plate 36 are divided in the width direction of the loaded stack 58, even if the planographic printing plates 10 are different in size, Correspondingly, it is possible to apply to the loaded stack 58, so that versatility is enhanced and this is preferable.

The material of the corner contact plate 34, the surface contact plate 36, and the reinforcing member 82 is not particularly limited as long as it has the strength required for these members. For example, wood, metal, resin, cardboard, cardboard, A honeycomb structure material or the like may be used. Also,
The shapes of these members are not limited to those described above. For example, a member having an L-shaped cross section or an H-shaped member, or a solid or hollow rod (cross-section may have a prismatic shape even if it has a cylindrical shape) May be combined to form the square contact plate 34, the surface contact plate 36, and the reinforcing member 82. When a plurality of members are combined as described above, each member may be fixed or not fixed.

The material and the number of the fixing belt 38 are not particularly limited as long as the loaded stack 58, the square contact plate 34, and the surface contact plate 36 can be securely fixed to the loading member 32 from the surroundings. For example, 1 at any position
This arrangement may be provided.

[0061]

According to the first aspect of the present invention, a stacking member capable of stacking a stack of a plurality of planographic printing plates stacked in the thickness direction, and a stacking stack of the stack stacked on the stacking member are provided. A contact member that is continuously applied over at least two surfaces including a stack bundle front surface corresponding to the surface of the lithographic printing plate and contacts a part of these surfaces, and the stack and the contact member Since it has a fixing means for fixing to the loading member, a large amount of planographic printing plates can be packed and protected, and the packing, unpacking and collection operations are facilitated.

According to a second aspect of the present invention, in the first aspect of the present invention, the fixing means tightens the contact member and the stack from outside while the contact member is applied to the stack. Since the fastening member is fixed to the loading member, the packing operation and the unpacking operation are facilitated.

According to a third aspect of the present invention, in the second aspect of the present invention, the stacking member mounted on the stacking member is provided substantially at the center of the front of the stacking member, and a tightening force from the tightening member is provided. As a result, the pressing member for pressing the stacked bundles inward in response thereto has the lithographic printing plate prevented from being curved.

According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the abutment member is provided between the front face of the stack and the side face of the stack adjacent to the front face of the stack. Since the contact area with at least two surfaces and the contact area with the stack stack front face are larger than the contact area with the stack stack side face, it is possible to more effectively prevent the bending of the planographic printing plate. In addition, the local load on the surface of the planographic printing plate can be dispersed to prevent deformation.

According to a fifth aspect of the present invention, in any one of the second to fourth aspects of the present invention, at least one of the contact member and the pressing member is applied by a fastening force from the fastening means. Since the reinforcing member for preventing the deformation of the member or the reinforcing member is provided, the deformation of the contact member or the pressing member can be prevented, and the packing state can be reliably maintained.

According to a sixth aspect of the present invention, in any one of the second to fifth aspects of the present invention, between at least one of the contact member and the pressing member and the stack, Since the dispersing member for dispersing the tightening force of the tightening member acting on the stack via the pressing member is provided, deformation of the planographic printing plate can be prevented.

According to a seventh aspect of the present invention, in the invention according to any one of the first to sixth aspects, the stack of the planographic printing plates constituting the stack has a vertical component. Since the lithographic printing plate is loaded on the loading member so that the lithographic printing plate can be stored efficiently, the work of loading the lithographic printing plate into the plate making machine becomes easy.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a lithographic printing plate packaging structure according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a lithographic printing plate packaging structure according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional view illustrating a packing structure of the planographic printing plate according to the first embodiment of the present invention.

FIG. 4 is a perspective view showing a lithographic printing plate packaging structure according to a second embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a planographic printing plate packaging structure of the present invention further provided with a reinforcing member.

FIG. 6 is a cross-sectional view showing a lithographic printing plate packaging structure of the present invention further provided with a cushioning material.

FIG. 7 is a perspective view showing still another example of a packaging structure for a lithographic printing plate of the present invention.

FIG. 8 is a perspective view showing still another example of a packaging structure for a lithographic printing plate according to the present invention.

FIG. 9 is a perspective view showing a conventional lithographic printing plate packaging structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Packing structure of planographic printing plate 32 Stacking member 34 Square applying plate (Applying member) 36 Surface applying plate (Pressing member) 38 Fixing belt (Tightening member, Fixing means) 58 Stacking bundle 58F Front of stacking bundle 70 Planographic printing plate Packing structure 72 loading member 82 reinforcing member 84 cushioning material (dispersion member)

Claims (7)

[Claims] 1. A stacking member capable of stacking a stack of a plurality of planographic printing plates stacked in a thickness direction, and a surface of the planographic printing plate of the stack of stacks stacked on the stacking member. A contact member that is continuously applied over at least two surfaces including a front surface of the stack to be contacted and contacts a part of these surfaces; and a fixing unit that fixes the stack and the contact member to the loading member. A packaging structure for a lithographic printing plate, comprising: 2. The fixing device according to claim 1, wherein the fixing member is a fastening member that fastens the contact member and the stack of bundles from the outside in a state where the contact member is applied to the stack of bundles and fixes the stack to the stacking member. A packaging structure for the lithographic printing plate according to claim 1. 3. A pressing member which is provided substantially at the center of the front of the stack of stacks stacked on the stack member and presses the stack inward by receiving a tightening force from the tightening member. The packaging structure for a lithographic printing plate according to claim 2, wherein: 4. The stacking member is in contact with at least two of the front surface of the stack and a side surface of the stack adjacent to the front surface of the stack, and a contact area with the front surface of the stack is a contact area with the side surface of the stack. The lithographic printing plate packaging structure according to claim 1, wherein the lithographic printing plate has a shape that is wider than the lithographic printing plate. 5. A reinforcing member for preventing at least one of the contact member and the pressing member from deforming the contact member or the reinforcing member due to a tightening force from the tightening means. A packaging structure for a lithographic printing plate according to any one of claims 2 to 4. 6. A dispersing member for dispersing the tightening force of the tightening member acting on the stack via the contact member or the pressing member between at least one of the pressing member and the pressing member and the stack. The lithographic printing plate packaging structure according to claim 2, wherein the lithographic printing plate is provided. 7. The stacking member according to claim 1, wherein the stacking member is stacked on the stacking member such that a surface of the planographic printing plate forming the stacking member has a vertical component. The packaging structure of a lithographic printing plate according to any of the above.