JP3141506B2 - Intaglio printing plate material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate material for forming an intaglio printing plate, and more particularly to an intaglio printing plate material capable of making a plate by laser engraving.

[0002]

2. Description of the Related Art As a conventional intaglio printing plate material for gravure printing or the like, a resin sheet such as polyethylene, which is a flexible and lightweight material, is used. In addition, these resin sheets have minute pits formed by laser processing or the like.

[0003]

However, as described above, when the intaglio printing plate material is formed from a resin sheet such as polyethylene, the critical surface tension of the surface is high because the resin such as polyethylene is hydrophobic. Is small. for that reason,
In the printing using the water-based ink, since the water-based ink has poor wettability to the intaglio printing plate material, the ink does not sufficiently enter the inside of the pit. As a result, the gradation reproducibility of the printed matter deteriorates. In particular, in the highlight portion of the image, the water-based ink is less likely to enter the pit because the area of the pit is small. Further, even if the aqueous ink enters the pit, the amount of the aqueous ink entering the pit does not become constant. For this reason, the reproducibility of the image becomes very poor.

As a countermeasure, there is an intaglio printing plate material formed of a material having excellent wettability. However, in this case, the wettability of not only the image portion but also the non-image portion is improved.
As a result, the water-based ink is also applied to the non-image portion, so that a so-called background stain is generated, and the quality of the printed matter is greatly reduced.

[0005] In addition, resins such as polyethylene are not good for oil-based ink. Therefore, when printing is performed using an intaglio printing plate material formed of a resin sheet such as polyethylene, as in the case of printing using the above-described water-based ink, the oil-based ink is sufficiently filled inside the small pits. Do not fit. Further, even if the oil-based ink enters the pit, the amount of the oil-based ink entering the pit is not constant. For this reason, the reproducibility of the image is extremely deteriorated, and the gradation reproducibility of the printed matter is also deteriorated.

As a countermeasure, there is an intaglio printing plate material formed of a material having excellent wettability. However, also in this case, the wettability of not only the image portion but also the non-image portion is improved. As a result, as in the case of using the water-based ink, so-called background stain occurs, and the quality of the printed matter is greatly reduced.

[0007] It is an object of the present invention to provide an intaglio printing plate material that enables high quality printing.

[0008]

SUMMARY OF THE INVENTION The present invention is an intaglio printing plate material for achieving the above object. That is, a hydrophilic substance or a light absorber wrapped with a hydrophilic film or a hydrophilic substance wrapped with a light absorbing film is embedded in a sheet-like hydrophobic substrate. Alternatively, a lipophilic substance, a light absorber wrapped with a lipophilic film, or a lipophilic substance wrapped with a light absorbing film is contained in a sheet-like base material repelling an oily solution.

[0009]

The intaglio printing plate material having the above-described structure is a material in which a hydrophilic substance or a light absorber wrapped with a hydrophilic film or a hydrophilic substance wrapped with a light absorbing film is embedded in a hydrophobic substrate. A hydrophilic substance or a hydrophilic film is exposed on the inner wall of the pit formed on the printing plate. As a result, when the printing ink is applied to the intaglio printing plate material, the inside of the pits has good wettability with the water ink. Therefore, when the water-based ink on the surface of the intaglio printing plate material except for the inside of the pit is removed, the water-based ink sufficiently remains in the pit. Further, since the base material is hydrophobic, when the aqueous ink is removed, it is removed without adhering to the surface of the base material.

[0010] Alternatively, the intaglio printing plate material having the above-described structure is a light absorber or a light absorbing material in which a lipophilic substance or a lipophilic film is wrapped on a substrate having a property of repelling an oily solution (hereinafter, this property is referred to as oleophobic). Since the lipophilic substance wrapped in the film is contained therein, the lipophilic substance or the lipophilic film is exposed on the inner wall of the pit formed in the intaglio printing plate material. As a result, when the printing oil-based ink is applied to the intaglio printing plate material, the inside of the pit has good wettability with the oil-based ink. Therefore, when the oil-based ink on the surface of the intaglio printing plate material except for the inside of the pit is removed, the oil-based ink sufficiently remains in the pit. Further, since the base material is oleophobic, when the oil-based ink is removed, it is removed without adhering to the surface of the base material.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to a schematic sectional view shown in FIG. In the figure, as an example of the intaglio printing plate material 10, a gravure printing plate material will be described. As shown in the figure, the intaglio printing plate material 10 includes a base material 11 formed into a sheet from a hydrophobic substance, and a plurality of hydrophilic substances 12 contained in the base material 11. This hydrophilic substance 12 is formed of fine particles. The base material 11 is formed of, for example, an ethylene-vinyl acetate copolymer (hereinafter, referred to as EVA) resin. The hydrophilic substance 12 is formed of, for example, a polyvinyl alcohol (hereinafter, referred to as PVA) resin. In addition, the base material 11 to which a light absorber 13 for increasing the absorption of laser light when forming pits is added is used. The light absorber 13 is made of, for example, carbon powder such as carbon black. The respective mixing ratios are, for example, 80% of EVA resin, 5% of PVA resin, and 15% of carbon powder in weight ratio.

The mixing ratio is such that, for example, the weight ratio of the PVA resin is 5% to 1 in order to form the base material 11 into a sheet shape.
It is set in the range of 5%, and the weight ratio of the carbon powder is 15% to 2%.
It is set in the range of 5%. Moreover, the weight ratio of the PVA resin and the carbon powder together is set to 30% or less.

Next, an example of a method for manufacturing the intaglio printing plate material 10 will be described. First, using a mixing roll, kneading conditions of, for example, 100 ° C. for 10 minutes are used to knead carbon powder with EVA resin to produce a master batch containing carbon powder. In the same manner as described above, a granular PVA resin is kneaded with the EVA resin to generate a master batch containing the PVA resin. Then, the respective master batches are again kneaded under the same kneading conditions as described above so as to obtain a predetermined mixing ratio. After that, using an extruder, the above master batches are kneaded, heated to, for example, 120 ° C., and formed into a sheet to form the intaglio printing plate material 10.

In the first embodiment, the base material 11 is made of EVA resin. However, for example, unsaturated polyester resin, epoxy resin, allyl resin, polyurethane resin, hydrocarbon resin such as polyethylene and polypropylene, polyvinyl acetate, Polar vinyl resins such as methyl methacrylate resin, and cotton-like resins such as polyacetal, polycarbonate, and polyethylene terephthalate can also be used.

As the hydrophilic substance 12, the above-mentioned PVA is used.
In addition to the resin, it is also possible to use a polyethylene glycol (hereinafter referred to as PEG) resin or a cellulosic resin such as acetyl cellulose. Alternatively, an anionic surfactant such as a fatty acid soap or an alkylbenzene sulfonate, or an amphoteric surfactant such as a long-chain alkyl amino acid can be used. The mixing ratio of these substances is
It is determined in consideration of laser workability for forming pits.

Further, the intaglio printing plate material 10 described in the first embodiment was added with carbon powder as the light absorber 13, but the base material 11 itself was made of a material having excellent laser beam absorbability. If formed, it is not necessary to add the light absorber 13.

Next, a method of irradiating the intaglio printing plate material 10 with laser light to form pits will be described. As the laser light (not shown), for example, a semiconductor laser light (having a wavelength of about 800 nm) is used. Laser light emitted from a semiconductor laser device (not shown) is condensed by a condensing optical system (not shown) in a predetermined mode and a predetermined spot size, and is irradiated on the intaglio printing plate material 10. .

As shown in FIG. 2, the portion of the intaglio printing plate material 10 irradiated with the laser beam (not shown) is heated and evaporated. Then, pits 15 for filling ink are formed. Usually, the diameter of the pit 15 formed by laser processing is set in the range of several μm to several tens μm, and the depth thereof is set in the range of several μm to several tens μm.

In the intaglio printing plate material 10 having the above-described structure, the base material 11 is formed of a hydrophobic substance having a hydrophilic substance 12 therein. Therefore, when the pits 15 are formed, a plurality of pits 15 are formed on the inner wall of the pits 15. The hydrophilic substance 12 is exposed. For this reason, the inner wall of the pit 15 has good wettability with the aqueous ink.
Therefore, when the water-based ink is applied to the surface of the intaglio printing plate material 10 and then the water-based ink is removed from the surface, the water-based ink enters the pits 15 and remains sufficiently.
Further, the water-based ink is completely removed from the surface of the intaglio printing plate material 10 excluding the inside of the pits 15.

In the first embodiment described above, the hydrophilic substance 12 may be exposed on the surface of the intaglio printing plate material 10. Therefore, a thin hydrophobic film (not shown) can be formed on the surface of the intaglio printing plate material 10. This hydrophobic film is made of, for example, the same material as
It is formed to a thickness of about 5 μm.

Next, a second embodiment will be described with reference to a schematic sectional view shown in FIG. As shown in FIG.
Is a substrate 21 made of a hydrophobic substance such as an EVA resin.
A plurality of light absorbers (for example, carbon powder) 23 whose periphery is covered with a thin hydrophilic film (for example, PVA resin) 22 are formed inside and formed into a sheet. The respective mixing ratios are, for example, 80% of EVA resin, 5% of PVA resin, and 15% of carbon powder in weight ratio.

In order to form the base material 11 into a sheet shape, the weight ratio of the PVA resin is, for example, 5% to 1%.
It is set in the range of 5%, and the weight ratio of the carbon powder is 15% to 2%.
It is set in the range of 5%. Moreover, the weight ratio of the PVA resin and the carbon powder together is set to 30% or less.

Next, an example of a method of manufacturing the intaglio printing plate material 20 will be described. First, using a mixing roll, for example, under kneading conditions of 100 ° C. for 10 minutes, the surroundings are thin PVA.
The carbon powder covered with the resin is kneaded with the EVA resin to produce a masterbatch. Thereafter, the master batch is heated to, for example, 120 ° C. and formed into a sheet by using an extruder, thereby forming an intaglio printing plate material 20.

The substrate 21 is made of EVA resin.
As described in the first embodiment, the same resin as the substrate (11) can be used. In addition, as the hydrophilic film 22,
In addition to the PVA resin, a film made of the same resin as the hydrophilic substance (12) described in the first embodiment can be used.

The method of irradiating the intaglio printing plate material 20 with laser light to form pits for ink at the time of printing is the same as that described in the first embodiment, so that the description here is omitted. .

The inner walls of the pits (not shown) formed on the intaglio printing plate material 20 having the above-described structure by the laser processing include:
A plurality of hydrophilic films 22 are exposed. Therefore, the inner wall of the pit has good wettability with the aqueous ink. Therefore, when the water-based ink is applied to the surface of the intaglio printing plate material 20 and then the water-based ink is removed from the surface, the water-based ink enters the pits and remains sufficiently. Further, the water-based ink is completely removed from the surface of the intaglio printing plate material 20 except in the pits.

In the second embodiment described above, the hydrophilic film 22 may be exposed on the surface of the intaglio printing plate material 20. Therefore, a thin hydrophobic film (not shown) can be formed on the surface of the intaglio printing plate material 20. This hydrophobic film is made of, for example, the same material as the base material 21 and has a thickness of 1 μm to 5 μm.
It is formed to a thickness of about μm.

Next, a third embodiment will be described with reference to a schematic sectional view shown in FIG. As shown in FIG.
Is a substrate 31 made of a hydrophobic substance such as an EVA resin.
A plurality of hydrophilic substances (for example, PVA resin) 33 whose periphery is covered with a thin light-absorbing film (for example, carbon film) 32 are formed inside and formed into a sheet. The respective mixing ratios are, for example, 80% of EVA resin, 5% of PVA resin, and 15% of carbon powder in weight ratio.

In order to form the base material 11 into a sheet, the mixing ratio is, for example, 5% to 1% by weight of the PVA resin.
It is set in the range of 5%, and the weight ratio of the carbon powder is 15% to 2%.
It is set in the range of 5%. Moreover, the weight ratio of the PVA resin and the carbon powder together is set to 30% or less.

Next, an example of a method of manufacturing the intaglio printing plate material 30 will be described. First, using a mixing roll, a plurality of granular PVA resins whose surroundings are covered with a thin carbon film are kneaded with an EVA resin under kneading conditions of, for example, 100 ° C. for 10 minutes to produce a master batch. Thereafter, the master batch is heated to, for example, 120 ° C. and formed into a sheet by using an extruder, thereby forming an intaglio printing plate material 30.

Although the base material 31 is made of EVA resin,
For example, the same resin as the base material (11) described in the first embodiment can be used. As the hydrophilic substance 32, other than the PVA resin, the same resin as the hydrophilic substance (12) described in the first embodiment can be used.

The method of irradiating the above-described intaglio printing plate material 30 with laser light to form pits into which ink is to be applied during printing is the same as that described in the first embodiment, and a description thereof will be omitted. . Then, as shown in FIG. 5, a portion of the intaglio printing plate material 30 irradiated with the laser beam (not shown) is heated and evaporated, and a pit 35 is formed. At this time, the light absorbing film 32 covering the hydrophilic substance 33 is removed because it easily absorbs the laser light. Therefore, on the inner wall of the pit 35, the hydrophilic substance 33 from which the light absorbing film 32 has been removed is exposed. Therefore, the inner wall of the pit 35 has good wettability with the aqueous ink. Therefore, when the water-based ink is applied to the surface of the intaglio printing plate material 30 and the water-based ink is removed from the surface, the water-based ink enters the pits 35 and remains sufficiently. Further, the water-based ink is completely removed from the surface of the intaglio printing plate material 30 excluding the inside of the pit 35.

Next, an embodiment of an intaglio printing plate material for oil-based ink will be described with reference to FIGS. In each figure, a gravure printing plate is described as an example of an intaglio printing plate. First, a fourth embodiment will be described with reference to a schematic sectional view shown in FIG. As shown in the figure, a printing plate 50 for intaglio printing has a base material 51 formed into a sheet shape with a resin having a property of repelling an oily solution (hereinafter, this property is referred to as oleophobic property), and is present in the base material 51. It comprises a plurality of lipophilic substances 52. This lipophilic substance 52 is formed of fine particles. The base material 51 is
For example, it is formed of a polyethylene resin. The lipophilic substance 52 is formed of, for example, polyethylene glycol (hereinafter referred to as PEG) resin. Note that the base material 51 to which a light absorber 53 for increasing the absorption of laser light when forming pits is added is used. This light absorber 53
Is made of a carbon powder such as carbon black. The respective mixing ratios are, for example, 80% by weight of polyethylene resin, 5% by weight of PEG resin, and 15% by weight of carbon powder in weight ratio.

The above mixing ratio is, for example, 5% to 15% by weight of the PEG resin in consideration of molding into a sheet.
%, And the weight ratio of the carbon powder is 15% to 25%.
It is set in the range of%. Moreover, the weight ratio of the PEG resin and the carbon powder together is set to, for example, 30% or less.

Next, an example of a method for manufacturing the intaglio printing plate material 50 will be described. First, a carbon powder is kneaded with a polyethylene resin under a kneading condition of, for example, 100 ° C. for 10 minutes using a mixing roll to produce a master batch containing the carbon powder. Also, as described above, polyethylene resin is made of PE.
The G resin is kneaded to produce a masterbatch containing the PEG resin. Then, the respective master batches are again kneaded under the same kneading conditions as described above so as to obtain a predetermined mixing ratio. Thereafter, using an extruder, the above master batches are kneaded, heated to, for example, 120 ° C., and formed into a sheet, thereby forming an intaglio printing plate material 50.

Although the base material 51 is made of polyethylene resin, for example, polypropylene resin, PVA resin, chloroprene rubber, polysulfide synthetic rubber, polycapramide resin, hexamethylenediamine adipate resin and the like can be used. As the lipophilic substance 52, in addition to the PEG resin, an anionic surfactant such as a fatty acid soap or an alkylbenzene sulfonate, or an amphoteric surfactant such as a long-chain alkyl amino acid can be used. The mixing amount of these substances is determined in consideration of the laser processability for forming pits.

The intaglio printing plate material 50 contains carbon powder as a light absorber. However, if the base material 51 itself is formed of a material having excellent laser light absorbency, the light is absorbed. There is no need to add an absorber.

The method of irradiating the intaglio printing plate material 50 with laser light to form pits into which ink is to be applied during printing is the same as that described in the first embodiment, and a description thereof will be omitted. .

The inner walls of the pits (not shown) formed on the intaglio printing plate material 50 having the above-described structure by laser processing have
A plurality of lipophilic substances 52 are exposed. For this reason, the inner wall of the pit has good wettability with oil-based ink. Therefore, when the oil-based ink is applied to the surface of the intaglio printing plate material 50 and the oil-based ink on the surface is removed, the oil-based ink enters the pits and remains sufficiently. The oil-based ink is completely removed from the surface of the intaglio printing plate material 50 except in the pits.

In the fourth embodiment described above, there is a possibility that the lipophilic substance 52 appears on the surface of the intaglio printing plate 50. Therefore, a thin oleophobic film (not shown) can be formed on the surface of the intaglio printing plate 50. The oleophobic film is made of, for example, the same material as
It is formed to a thickness of about 5 μm.

Next, a fifth embodiment will be described with reference to a schematic sectional view shown in FIG. As shown in FIG.
Is covered with a thin lipophilic film (for example, PEG resin) 62 in a substrate 61 made of a substance having a property of repelling an oily solution such as a polyethylene resin (hereinafter, a substance having this property is referred to as an oleophobic substance). It is formed into a sheet with a plurality of light absorbers (for example, carbon powder) 63 therein. Each mixing ratio is, for example, 80% by weight of polyethylene resin, 5% by weight of PEG resin, and 15% by weight of carbon powder by weight ratio.
And

The above mixing ratio is, for example, 5% to 15% by weight of the PEG resin in consideration of molding into a sheet.
%, And the weight ratio of the carbon powder is 15% to 25%.
It is set in the range of%. Moreover, the weight ratio of the PEG resin and the carbon powder together is set to, for example, 30% or less.

Next, an example of a method for manufacturing the intaglio printing plate material 60 will be described. First, using a mixing roll, for example, under kneading conditions of 100 ° C. for 10 minutes, the surrounding area is thin PEG.
Knead the carbon powder covered with resin into polyethylene resin,
Generate a master batch. Thereafter, the master batch is heated to, for example, 120 ° C. and formed into a sheet by using an extruder, thereby forming an intaglio printing plate material 60.

The base material 61 is made of polyethylene resin. For example, the base material (51) described in the fourth embodiment can be used.
It is also possible to use the same material as described above. The lipophilic film 62 can be formed of, for example, the same material as the lipophilic substance (52) described in the fourth embodiment. The mixing ratio of these substances is determined in consideration of the workability of forming a sheet.

The method of irradiating the above-described intaglio printing plate material 60 with laser light to form pits into which ink is to be applied at the time of printing is the same as that described in the first embodiment, and a description thereof will be omitted. .

The inner walls of the pits (not shown) formed in the intaglio printing plate material 60 having the above-described structure by the laser processing include:
A plurality of lipophilic films 62 are exposed. For this reason, the inner wall of the pit has good wettability with oil-based ink. Therefore, when the oil-based ink is applied to the surface of the intaglio printing plate material 60 and the oil-based ink on the surface is removed, the oil-based ink enters the pits and remains sufficiently. The oil-based ink is completely removed from the surface of the intaglio printing plate material 60 except in the pits.

In the above-described fifth embodiment, there is a possibility that the lipophilic film 62 is exposed on the surface of the intaglio printing plate material 60. Therefore, a thin oleophobic film (not shown) can be formed on the surface of the intaglio printing plate material 60. The oleophobic film is made of, for example, the same material as
It is formed to a thickness of about μm.

Next, a sixth embodiment will be described with reference to a schematic sectional view shown in FIG. As shown in FIG.
A lipophilic substance (for example, PEG resin) 73 covered with a thin light absorbing film (for example, carbon film) 72 in a base material 71 made of, for example, an oleophobic substance such as polyethylene resin,
It is formed into a sheet. Each mixing ratio is
For example, in terms of weight ratio, polyethylene resin is 80%, PEG resin is 5%, and carbon powder is 15%.

The mixing ratio may be, for example, 5% to 15% by weight of the PEG resin in consideration of molding into a sheet.
%, And the weight ratio of the carbon powder is 15% to 25%.
It is set in the range of%. In addition, the weight ratio of the PEG and the carbon powder is set, for example, to 30% or less.

Next, an example of a method of manufacturing the intaglio printing plate material 70 will be described. First, using a mixing roll, for example, under a kneading condition of 100 ° C. for 10 minutes, a granular PVA resin whose periphery is covered with a thin carbon film is kneaded with a polyethylene resin to generate a master batch. Thereafter, the master batch is heated to, for example, 120 ° C. and formed into a sheet by using an extruder, thereby forming an intaglio printing plate material 70.

The base material 71 is made of polyethylene resin. For example, the base material (51) described in the fourth embodiment is used.
It is also possible to form with the same material as described above. The lipophilic substance 73 can be formed of the same material as the lipophilic substance (52) described in the fourth embodiment, for example. The mixing ratio of these substances is determined in consideration of the workability of forming a sheet.

The method of irradiating the above intaglio printing plate material 70 with laser light to form pits into which ink is to be applied at the time of printing is the same as that described in the first embodiment, and a description thereof will be omitted. .

The portion of the intaglio printing plate material 70 irradiated with the laser beam (not shown) is heated and evaporated,
Pits (not shown) are formed. At this time, the light absorbing film 72 covering the lipophilic substance 73 is removed because it easily absorbs laser light. Therefore, the lipophilic substance 73 from which the light absorbing film 72 has been removed is exposed on the inner wall of the pit. Therefore, the inner wall of the pit has good wettability with oil-based ink. Therefore, when the oil-based ink is applied to the surface of the intaglio printing plate material 70 and then the oil-based ink on the surface is removed, the oil-based ink enters the pits and remains sufficiently. The oil-based ink is completely removed from the surface of the intaglio printing plate material 70 except in the pits.

[0054]

As described above, the inventions according to the first to third aspects of the present invention are directed to a light absorber or a light absorbing material wrapped with a hydrophilic substance or a hydrophilic film on a hydrophobic substrate. Since the substance is contained therein, a hydrophilic substance or a hydrophilic film is exposed on the inner wall of the pit formed in the intaglio printing plate material.
For this reason, since the inside of the pit has good wettability with the aqueous ink, the aqueous ink sufficiently remains in the pit.
It can be removed without leaving the aqueous ink on the surface of the substrate.
Therefore, printing with an aqueous ink excellent in image reproducibility, gradation reproducibility, and the like becomes possible.

The invention according to claims 4 to 6 is a light-absorbing material wrapped with a lipophilic substance or a lipophilic film or a lipophilic material wrapped with a light-absorbing film on a base material having a property of repelling an oily solution (oleophobic). Since the substance is contained therein, a lipophilic substance or a lipophilic film appears on the inner wall of the pit formed in the intaglio printing plate material. Therefore, the inside of the pit has good wettability with the oil-based ink, so that the oil-based ink sufficiently remains in the pit. In addition, it can be removed without leaving the oil-based ink on the substrate surface. Therefore, printing with oil-based ink having excellent image reproducibility and gradation reproducibility becomes possible.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of an intaglio printing plate material according to a first embodiment.

FIG. 2 is a schematic sectional view of a pit formed on the intaglio printing plate material in FIG.

FIG. 3 is a schematic sectional view of an intaglio printing plate material according to a second embodiment.

FIG. 4 is a schematic sectional view of an intaglio printing plate material according to a third embodiment.

FIG. 5 is a schematic sectional view of a pit formed on the intaglio printing plate material in FIG. 4;

FIG. 6 is a schematic sectional view of an intaglio printing plate material according to a fourth embodiment.

FIG. 7 is a schematic sectional view of an intaglio printing plate material according to a fifth embodiment.

FIG. 8 is a schematic sectional view of an intaglio printing plate material according to a sixth embodiment.

[Explanation of symbols]

Reference Signs List 10: intaglio printing plate material, 11: base material, 12: hydrophilic substance, 13: light absorber, 15: pit, 20: intaglio printing plate material, 21: base material, 22: hydrophilic film, 23 ... Light absorber,
30 ... intaglio printing plate material, 31 ... substrate, 32 ... light absorbing film,
33: hydrophilic substance, 35: pit, 50: intaglio printing plate material, 51: base material, 52: lipophilic substance, 53: light absorber,
60: intaglio printing plate material, 61: base material, 62: lipophilic film,
63: light absorber, 70: plate material for intaglio printing, 71: base material,
72: light absorbing film, 73: lipophilic substance

Claims (6)

(57) [Claims] 1. An intaglio printing plate material for forming an intaglio printing plate, comprising: a sheet-like base made of a hydrophobic substance; and a hydrophilic substance contained in the base. Intaglio printing plate material. 2. An intaglio printing plate material for forming an intaglio printing plate, comprising: a sheet-like substrate made of a hydrophobic substance; and a material inherent in the substrate, which is wrapped with a hydrophilic film. A plate material for intaglio printing, characterized by comprising a light absorber. 3. An intaglio printing plate material for forming an intaglio printing plate, comprising: a sheet-like substrate made of a hydrophobic substance; A plate material for intaglio printing, comprising a hydrophilic substance. 4. An intaglio printing plate material for forming an intaglio printing plate, comprising: a sheet-like base made of a substance having a property of repelling an oily solution; and a lipophilic substance contained in the base. A plate material for intaglio printing, characterized by comprising: 5. An intaglio printing plate material for forming an intaglio printing plate, comprising: a sheet-like substrate made of a substance having a property of repelling an oily solution; An intaglio printing plate material comprising a light absorber wrapped with a lipophilic film. 6. An intaglio printing plate material for forming an intaglio printing plate, comprising: a sheet-like substrate made of a substance having a property of repelling an oily solution; An intaglio printing plate material comprising a lipophilic substance wrapped with a light absorbing film.