JP2008105389A - Printing paper and reproductions - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reproduced picture of a high quality texture having a unique uneven impression which is peculiar to mineral pigments. <P>SOLUTION: The printing paper 6 has an undercoat uneven layer 2 which is formed on a base material 1, and a receiving layer 3 which is formed on the undercoat uneven layer. In the undercoat uneven layer, an average height difference between the protruding sections and the recess sections is set to be within a range of 70 to 90 μm, and the forming density of the protruding sections and/or the recess sections is set to be within a range of 80 to 800 pieces/cm<SP>2</SP>. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a printing paper, in particular, a printing paper suitable for drawing a reproduction of a Japanese painting with a rock-like tone, and a reproduction thereof.

  A rock paint is a material in which granular or powdery raw minerals are colored using glue water, etc. A Japanese painting drawn using this rock paint has a large number of minute irregularities with a rough surface.

  In addition to the unique colors of rock-like Japanese paintings, the rough surface shape creates a special texture, which is one element that creates the beauty of paintings. When reproducing Japanese-style paintings, it is necessary to reproduce the rough surface as well as the color of the painting.

  Traditionally, when replicating Japanese paintings in the form of rock paint, a pattern layer was formed on the base material by offset printing and a transparent uneven film was laminated to express the unique texture of rock paint. Due to Tekari, there was a problem that the texture of real Japanese painting was difficult to express.

  On the other hand, in Patent Document 1, a material layer is formed on a base material such as Japanese paper, a color material receiving layer is formed on the material layer, and an image corresponding to the original image is reproduced on the color material receiving layer. A method for producing a replica is disclosed.

JP 2005-14387 A

  In the method for producing a replica disclosed in Patent Document 1, the material layer is composed of a base coating material composed of a binder and a white pigment, and an additive, and expresses a thick three-dimensional texture, It is used to create textures such as unevenness and roughness. In addition, a commercially available color material receiving material is used for forming the color material receiving layer.

  According to the method disclosed in Patent Document 1, since the concavo-convex shape is formed without laminating the conventional transparent concavo-convex processed film, the problem caused by the above-described merging can be solved.

  However, according to the study of the present inventors, the irregularities peculiar to rock paints are obtained simply by forming a colorant receiving layer using a commercially available colorant receiving material on a material layer having irregularities as in Patent Document 1. It has been found that it is difficult to fully express the feeling and there is also a problem in the adhesion of the colorant receiving layer itself.

  Therefore, the applicant of the present application has made a patent application 2005 as a reproduction that can sufficiently express the fine unevenness peculiar to rock paint that is closer to the real thing, and further has a high commercial value that improves the adhesion of the receiving layer and prevents surface peeling. -352585 was proposed.

  The present invention provides a printing paper capable of reproducing a high-quality reproduction with a textured and unique texture of rock paint that is closer to the real even when a Japanese painting or the like is drawn using a rock paint with a small average grain size, and a reproduction thereof It is intended to do.

  The configuration of the present invention made to solve the above problems is as follows.

That is, the first printing paper of the present invention is a printing paper having a base concavo-convex layer formed on a substrate and a receiving layer formed on the base concavo-convex layer. The average height difference between the portions and the recesses is in the range of 70 to 90 μm, and the formation density of the protrusions and / or the recesses is in the range of 80 to 800 pieces / cm ² .

In addition, the second printing paper of the present invention includes an anti-curl layer formed on a paper base material, a base uneven layer formed on the anti-curl layer, and a receiving layer formed on the base uneven layer. The base concavo-convex layer has an average height difference between the convex portions and the concave portions in the range of 70 to 90 μm, and the formation density of the convex portions and / or concave portions is 80 to 800 pieces / cm ² . The anti-curl layer is in a range of 60 to 80 parts by weight of diglycerin and 40 to 20 parts by weight of water (the total of both being 100 parts by weight), and a total of 100 weights of diglycerin and water. It is formed by water-based ink containing 3 to 39 parts by weight of calcium carbonate with respect to parts.

Moreover, the underlying uneven layer has an average density of formation of projections or / and recesses, characterized in that in the range of 370 to 410 pieces / cm ^2.

  Moreover, the said base uneven | corrugated layer contains a cold water powder and a calcium carbonate powder, It is characterized by the above-mentioned.

  The cold water powder has a particle size of 300 μm or less, and has a first peak in the particle size range of 60 to 70 μm and a second peak in the particle size range of 190 to 200 μm in the particle size distribution. The calcium carbonate powder has an average particle size of 3 to 5 μm.

Further, the third printing paper of the present invention is a printing paper having a base concavo-convex layer formed on a substrate and a receiving layer formed on the base concavo-convex layer. The average height difference between the portions and the recesses is in the range of 80 to 95 μm, and the formation density of the protrusions and / or the recesses is in the range of 190 to 1100 / cm ² .

The fourth printing paper of the present invention comprises an anti-curl layer formed on a base material, an underlying concavo-convex layer formed on the anti-curl layer, and a receiving layer formed on the concavo-convex layer. The base uneven layer has an average height difference between a convex part and a concave part in a range of 80 to 95 μm, and a formation density of convex parts or / and concave parts is in a range of 190 to 1100 pieces / cm ² . The anti-curl layer is composed of 60 to 80 parts by weight of diglycerin and 40 to 20 parts by weight of water (the total of both being 100 parts by weight), and 100 parts by weight of the total of diglycerin and water. It is formed by the water-based ink containing 3-39 weight part of calcium carbonate with respect to this.

Moreover, the underlying uneven layer has an average density of formation of projections or / and recesses, characterized in that in the range of 450 to 490 pieces / cm ^2.

  Moreover, the said base uneven | corrugated layer contains a cold water powder and a calcium carbonate powder, It is characterized by the above-mentioned.

  The cold water powder has a particle size of 300 μm or less, and has a peak in the particle size range of 70 to 90 μm in the particle size distribution, and the average particle size of the calcium carbonate powder is 3 to 5 μm. It is characterized by.

Further, a fifth printing paper of the present invention is a printing paper having a base concavo-convex layer formed on a substrate and a receiving layer formed on the base concavo-convex layer, wherein the base concavo-convex layer is a convex The average height difference between the portion and the concave portion is in the range of 30 to 50 μm, and the formation density of the convex portion or / and the concave portion is in the range of 80 to 800 / cm ² .

The sixth printing paper of the present invention includes an anti-curl layer formed on a base material, a base uneven layer formed on the anti-curl layer, and a receiving layer formed on the base uneven layer. The base uneven layer has an average height difference between a convex part and a concave part in a range of 30 to 50 μm, and a formation density of convex parts or / and concave parts is in a range of 80 to 800 pieces / cm ² . The anti-curl layer is composed of 60 to 80 parts by weight of diglycerin and 40 to 20 parts by weight of water (the total of both being 100 parts by weight), and 100 parts by weight of the total of diglycerin and water. It is formed by the water-based ink containing 3-39 weight part of calcium carbonate with respect to this.

Moreover, the underlying uneven layer has an average density of formation of projections or / and recesses, characterized in that in the range of 370 to 410 pieces / cm ^2.

  Moreover, the said base uneven | corrugated layer contains a cold water powder and a calcium carbonate powder, It is characterized by the above-mentioned.

  The cold water powder has a particle size of 300 μm or less, and has a peak in the particle size range of 40 to 50 μm in the particle size distribution, and the average particle size of the calcium carbonate powder is 3 to 5 μm. It is characterized by.

The seventh printing paper of the present invention is a printing paper having a base uneven layer formed on a substrate and a receiving layer formed on the base uneven layer, wherein the base uneven layer is a convex layer. The average height difference between the part and the concave part is in the range of 25 to 45 μm, and the formation density of the convex part or / and the concave part is in the range of ²⁰ to 500 / cm ² .

Further, an eighth printing paper of the present invention comprises an anti-curl layer formed on a base material, a base uneven layer formed on the anti-curl layer, and a receiving layer formed on the base uneven layer. The base uneven layer has an average height difference between a convex portion and a concave portion in a range of 25 to 45 μm, and a formation density of the convex portion or / and the concave portion is in a range of ²⁰ to 500 pieces / cm ² . The anti-curl layer is composed of 60 to 80 parts by weight of diglycerin and 40 to 20 parts by weight of water (the total of both being 100 parts by weight), and 100 parts by weight of the total of diglycerin and water. It is formed by the water-based ink containing 3-39 weight part of calcium carbonate with respect to this.

Moreover, the underlying uneven layer has an average density of formation of projections or / and recesses, characterized in that in the range of 150 to 190 pieces / cm ^2.

  Moreover, the said base uneven | corrugated layer contains a cold water powder and a calcium carbonate powder, It is characterized by the above-mentioned.

  The cold water powder has a particle size of 300 μm or less, and has a peak in the particle size range of 20 to 30 μm in the particle size distribution, and the average particle size of the calcium carbonate powder is 3 to 5 μm. It is characterized by.

  In the first to eighth printing papers, the receiving layer contains calcium carbonate powder having an average particle diameter of 3 to 5 μm and a whiteness of 98% or more.

  In addition, a pattern layer is provided on the printing paper.

  According to the printing paper of the present invention, the average height difference between the convex portions and concave portions of the underlying concave and convex layer and the formation density of the convex portions and / or concave portions are within a specific range. The pattern layer itself can express the unevenness of the rock paint tone, and it is possible to obtain a high-quality reproduction of the texture that is closer to the real thing and has the unique unevenness of the rock paint.

  Furthermore, it is possible to use them according to the texture of the original picture, and the width of the reproduction of the rock paint will be expanded.

  According to the second, fourth, sixth and eighth printing papers of the present invention, the anti-curl layer is further provided on the substrate, so that the anti-curl layer penetrates into the substrate. Since it plays the role of preventing paper, curling (waving) of the paper can be prevented. Therefore, for example, when a duplicate image is printed by an ink jet printer or the like, the obstacle such as the head hitting the paper is reduced, and the output becomes more stable.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a cross-sectional view schematically showing a part of a duplicate image using the first, third, fifth and seventh printing papers of the present invention, wherein 1 is a base material, 2 is a base uneven layer, 3 is a receiving layer and 4 is a pattern layer. Note that the printing paper 6 of the present invention is a combination of the base material 1, the base uneven layer 2 and the receiving layer 3.

  FIG. 2 is a cross-sectional view schematically showing a part of a duplicate image using the second, fourth, sixth and eighth printing papers of the present invention, wherein 1 is a base material, 2 is a base uneven layer, 3 is a receiving layer, 4 is a pattern layer, and 5 is an anti-curl layer. Note that the printing paper 6 of the present invention is a combination of the base material 1, the base uneven layer 2, the receiving layer 3, and the anti-curl layer 5.

  As shown in the figure, the reproduced image of the present invention includes a base concavo-convex layer 2 formed on the substrate 1, a receiving layer 3 formed on the base concavo-convex layer 2, and a pattern formed on the receiving layer 3. First, third, fifth, and seventh duplicate images having a layer 4, an anti-curl layer 5 formed on the substrate 1, a base uneven layer 2 formed on the anti-curl layer 5, and a base There are second, fourth, sixth and eighth reproductions having a receiving layer 3 formed on the concave-convex layer 2 and a pattern layer 4 formed on the receiving layer 3.

[Base material]
As the substrate 1, paper, film, cloth, plastic plate, wood substrate, or the like can be used.

Since the water-based ink is preferably used in producing the reproduction of the present invention, the base material 1 of the first, third, fifth, and seventh reproductions is a paper that absorbs well and does not curl very much. For example, art paper (high quality paper) and Japanese paper are preferable, and those having a basis weight of 250 to 320 g / m ² are most preferable. When the basis weight is less than 250 g / m ² , curling tends to occur due to water absorption. On the other hand, if the basis weight exceeds 320 g / m ² , the paper thickness becomes thick and the surface thereof is easy to touch the print head, so that image formation becomes difficult.

  Further, in the second, fourth, sixth and eighth duplicate images, the anti-curl layer 5 serving as a waterproof wall is formed on the base material, so that the second, fourth, sixth and eighth copies are formed. The base material 1 of the eighth duplicate image is not particularly limited, but a paper that has good water absorption and does not curl so much is preferable.

[Anti-curl layer]
As a material for the anti-curl layer 5, a material that prevents the penetration of moisture into the substrate 1 may be used, and examples thereof include water-based inks and oil-based inks. Specific examples include oil-based inks containing pigments as coloring materials in known oil-based inks. In particular, if the base material is white, white ink is used. It is preferable to use it.

Further, when the receiving layer 3 is in contact with the anti-curl layer 5, 60 to 80 parts by weight of diglycerin, preferably 65 to 75 parts by weight and 40 to 20 parts by weight of water, preferably 35 to 25 parts by weight (both of them) It is preferable to use a water-based ink containing 100 parts by weight in total) and 3 to 39 parts by weight, preferably 25 to 35 parts by weight of calcium carbonate with respect to 100 parts by weight of the total of diglycerin and water. By using such a water-based ink, the receiving layer 3 is laminated without being repelled on the anti-curl layer 5, and further, the printability (easy to print and easy to dry) of the anti-curl layer 5, Color development is improved. In particular, when 25 to 35 parts by weight of calcium carbonate is contained with respect to 100 parts by weight of diglycerin and water in total, the color developability of the pattern layer 4 is improved.
The anti-curl layer 5 can be formed by a known method such as an offset printing method, a gravure printing method, a flexographic printing method, a screen printing method, or the like.

  The thickness of the anti-curl layer 5 is preferably in the range of 35 to 48 μm. With this thickness, the anti-curl layer 5 serves as a waterproof wall, and the substrate 1 does not absorb moisture flowing from each layer.

  Furthermore, the design property can also be improved by including a glittering pigment in the curl prevention layer 5 and partially forming the receiving layer 3 and the underlying concavo-convex layer 2.

[Uneven surface layer]
In order to give rock texture a unique uneven feeling, in the first and second reproductions, the underlying uneven layer 2 needs to have an average height difference between the convex and concave portions in the range of 70 to 90 μm. It is. If this average height difference is less than 70 μm, it may not be possible to obtain a texture with a texture that is unique to rock paints with moderate roughness. On the other hand, if this average height difference exceeds 90 μm, the unevenness is too conspicuous, and there may be a case where the texture with the unevenness peculiar to rock paint having a medium roughness cannot be obtained.

Further, in the first and second replicated images, the underlying uneven layer 2 needs to have a formation density of convex portions or / and concave portions in the range of 80 to 800 pieces / cm ² . When the formation density is less than 80 / cm ² , there may be a case where the texture having the unevenness peculiar to rock paint having a medium roughness cannot be obtained. On the other hand, when the formation density is higher than 800 / cm ² , the unevenness is excessively conspicuous, and a texture having a unique unevenness in rock paint having a medium roughness may not be obtained.

Furthermore, in the first and second replicated images, the base uneven layer 2 preferably has an average formation density of convex portions or / and concave portions within a range of 370 to 410 pieces / cm ² . As a result, it is possible to obtain a rock-like color tone that is sufficiently satisfactory for the entire reproduction.

  On the other hand, in the third and fourth duplicate images, the base uneven layer 2 needs to have an average height difference between the convex portions and the concave portions in the range of 80 to 95 μm. When this average height difference is less than 80 μm, it may not be possible to obtain a texture with a textured texture unique to rock paints with fine roughness. On the other hand, if this average height difference exceeds 95 μm, the unevenness is too conspicuous, and there may be a case where the texture having the unevenness peculiar to rock paint having a fine roughness cannot be obtained.

In the third and fourth reproductions, substrate concavoconvex layer 2, it is necessary that the formation density of the projections or / and recesses is in the range of 190 to 1100 pieces / cm ^2. When the formation density is less than 190 / cm ² , there may be a case where the texture having the unevenness peculiar to the rock paint having fine roughness cannot be obtained. On the other hand, when the formation density is higher than 1100 / cm ² , the unevenness is excessively conspicuous, and a texture with the unevenness unique to a rock paint having a fine roughness may not be obtained.

Further, in the third and fourth reproductions, substrate concavoconvex layer 2, the average formation density of the projections or / and recesses is preferably in the range of 450 to 490 pieces / cm ^2. As a result, it is possible to obtain a rock-like color tone that is sufficiently satisfactory for the entire reproduction.

  Further, in the fifth and sixth duplicate images, the base uneven layer 2 needs to have an average height difference between the convex portions and the concave portions in the range of 30 to 50 μm. If this average height difference is less than 30 μm, it may not be possible to obtain a texture with a textured surface unique to rock paints with extremely fine roughness. On the other hand, if this average height difference exceeds 50 μm, the unevenness is too conspicuous, and there may be a case where the texture having the unevenness peculiar to rock paint having an extremely thin roughness cannot be obtained.

Furthermore, in the fifth and sixth duplicated images, it is necessary that the foundation uneven layer 2 has a formation density of convex portions or / and concave portions within a range of 80 to 800 pieces / cm ² . When the formation density is less than 80 / cm ² , there may be a case where the texture having the unevenness peculiar to rock paint having extremely thin roughness cannot be obtained. On the other hand, when the formation density is higher than 800 / cm ² , the unevenness is excessively conspicuous, and a texture with a unique unevenness in rock paint having extremely thin roughness may not be obtained.

In the fifth and sixth replicated images, the underlying uneven layer 2 preferably has an average formation density of convex portions or / and concave portions in the range of 370 to 410 pieces / cm ² . As a result, it is possible to obtain a rock-like color tone that is sufficiently satisfactory for the entire reproduction.

  Further, in the seventh and eighth duplicate images, the base uneven layer 2 needs to have an average height difference between the convex portions and the concave portions in the range of 25 to 45 μm. If this average height difference is less than 25 μm, it may not be possible to obtain a texture with the unevenness peculiar to rock paint having a much finer roughness. On the other hand, if this average height difference exceeds 45 μm, the unevenness is too conspicuous, and there may be a case where the texture with the unevenness peculiar to rock paint having a much finer roughness cannot be obtained.

Furthermore, in the seventh and eighth duplicate images, the underlying uneven layer 2 needs to have a formation density of convex portions or / and concave portions in the range of ²⁰ to 500 pieces / cm ² . When the formation density is less than 20 / cm ² , there may be a case where a texture having unevenness peculiar to rock paint having a much finer roughness cannot be obtained. On the other hand, when the formation density is higher than 500 / cm ² , the unevenness is excessively conspicuous, and a texture having the unevenness unique to the rock paint having an extremely fine roughness may not be obtained.

In the seventh and eighth replicated images, it is preferable that the base uneven layer 2 has an average formation density of convex portions or / and concave portions in the range of 150 to 190 pieces / cm ² . As a result, it is possible to obtain a rock-like color tone that is sufficiently satisfactory for the entire reproduction.

  The height difference and the formation density of the convex and concave portions of the underlying concave / convex layer can be observed and measured using, for example, a confocal microscope (confocal microscope), SEM (scanning electron microscope), or the like. In the case of a confocal microscope, the surface shape can be observed, and the altitude difference can be measured from the result. In the case of SEM, for example, the height difference can be measured by observing the cross section after processing the cross section with a vertical slicer.

  The formation density of the convex and concave portions of the underlying concave and convex layer defined in the present invention is a value obtained by counting only those having an altitude difference of 50 μm or more observed with a confocal microscope. In addition, the formation density of the convex part of a base uneven | corrugated layer as described in the below-mentioned Example and a recessed part is the value computed from the result of having observed the area | region of 2130 micrometers x 1710 micrometers using the laser tech Co., Ltd. optics C130.

[Formation of ground relief layer]
When producing the duplicate image of the present invention, preferably the base uneven layer having the surface uneven shape as described above is a water-based base uneven layer forming screen ink containing at least ethylene vinyl acetate emulsion, cold water powder and calcium carbonate powder. It forms using.

  The ethylene vinyl acetate emulsion has a function as an adhesive, and is intended to enhance the adhesion of the underlying concavo-convex layer to the base material or the anti-curl layer. This ethylene vinyl acetate emulsion is preferably contained in the screen ink for forming the underlying uneven layer in an amount of 20 to 25% by weight, particularly preferably 21 to 23% by weight. If it is less than 20% by weight, sufficient adhesion cannot be obtained, and the underlying concavo-convex layer is easily peeled off or the underlying concavo-convex layer is liable to sag. On the other hand, when it exceeds 25% by weight, it is difficult to realize the height difference and the formation density of the protrusions and recesses of the underlying concavo-convex layer as described above, and it is difficult to obtain a texture having a concavo-convex feeling peculiar to rock paint.

  Cold water powder (calcite powder) and calcium carbonate powder (cucumber: oysters and scallop powder) are used to obtain the irregularities unique to rock paint. Rock paints (natural rock paints, new rock paints, synthetic rock paints) contain granular and powdery raw minerals such as calcite and slaked powder. In the present invention, such rock paints actually used. By including the material in the uneven surface layer, it is possible to beautifully reproduce the skin tone of rock paint.

  The cold water powder is preferably contained in the screen ink for forming the underlying uneven layer in an amount of 44 to 46% by weight. If it is less than 44% by weight, the color of the rock paint is weak, and it is difficult to obtain a texture with the unevenness unique to the rock paint. On the other hand, if it exceeds 46% by weight, it becomes difficult to obtain a rock-like color tone that makes the unevenness conspicuous and satisfactory, and the printability of the ink deteriorates.

  The cold water powder preferably has a particle size of 300 μm or less. The particle size of the calcite actually contained in the rock paint is approximately 200 μm or less. If the particle size of the cold water powder exceeds 300 μm, it becomes difficult to obtain a sufficiently satisfactory rock paint tone.

  In the case of the first and second reproductions, the cold water powder has a first peak in the particle size range of 60 to 70 μm and a particle size distribution in the range of 190 to 200 μm. Those having two peaks are preferred. If it has such a particle size distribution, the base uneven | corrugated layer whose average height difference of the convex part of this invention and a recessed part exists in the range of 70-90 micrometers can be stably formed with sufficient reproducibility.

  Furthermore, in the case of the third and fourth reproductions, the cold water powder preferably has a peak in the particle size range of 70 to 90 μm in its particle size distribution. If it has such a particle size distribution, the base uneven | corrugated layer whose average height difference of the convex part of this invention and a recessed part exists in the range of 80-95 micrometers can be stably formed with sufficient reproducibility.

  In the case of the fifth and sixth reproductions, the cold water powder preferably has a peak in the particle size range of 40 to 50 μm in its particle size distribution. If it has such a particle size distribution, the base uneven | corrugated layer whose average height difference of the convex part of this invention and a recessed part is in the range of 30-50 micrometers can be stably formed with sufficient reproducibility.

  Furthermore, in the case of the seventh and eighth reproductions, the cold water powder preferably has a peak in the particle size range of 20 to 30 μm in its particle size distribution. If it has such a particle size distribution, the base uneven | corrugated layer whose average height difference of the convex part of this invention and a recessed part exists in the range of 25-45 micrometers can be stably formed with sufficient reproducibility.

  As for the average particle diameter of the said calcium carbonate powder, 3-5 micrometers is preferable. The particle size of the chopped powder (white painting material of Japanese painting) actually contained in the rock paint is approximately 5 μm, and if the average particle size of the calcium carbonate powder exceeds 5 μm, a sufficiently satisfactory rock paint tone can be obtained. Becomes difficult. Moreover, the said calcium carbonate powder has a high purity thing with high whiteness.

  The rock powder of the rock paint is used for the purpose of raising or making a white base, and the calcium carbonate powder used in the examples of the present invention (trade name Shell Lime / Hokkaido Kyodo Lime Co., Ltd.) Since scallop shells are used as a raw material, the average particle size is 3 to 5 μm and the whiteness is 98%, which is a high purity.

  The underlying uneven layer 2 is not only formed on the entire surface, but may be partially formed depending on the surface unevenness of the original image, and in order to obtain an uneven shape corresponding to the original image In some cases, it may be overprinted.

[Receptive layer]
In the present invention, since a pattern layer corresponding to the original image is formed on the surface having the uneven shape, a non-contact ink jet system is suitable for forming the pattern layer. For this reason, the receiving layer 3 which has the printability by an inkjet printer is provided on the said base uneven | corrugated layer 2. As shown in FIG.

  Conventionally, it is not possible to use pigments such as silica and calcium carbonate in the receiving layer that is suitable for printing by an ink jet printer in order to exhibit excellent ink color development and ink absorbability, and to achieve high-definition image quality and high print density. Widely known.

  However, in the present invention, since the receiving layer 3 is provided on the base concavo-convex layer 2 having the concavo-convex shape as described above, there is a problem in that sufficient adhesion cannot be obtained with the composition of the conventional receiving layer and the surface is easily peeled off. is there.

  For this reason, when producing the reproduction of the present invention, the receiving layer 3 is preferably formed using an aqueous receiving layer forming screen ink containing a curing agent in addition to the composition of the conventional receiving layer.

  As the curing agent, for example, isocyanate or the like that undergoes a crosslinking reaction with a hydroxyl group is appropriately used. This curing agent is preferably contained in the receiving layer forming screen ink at a ratio of 6.5 to 11.5% by weight. If the amount is less than 6.5% by weight, sufficient effects due to the curing agent cannot be obtained, and the adhesion tends to be insufficient. On the other hand, if it exceeds 11.5% by weight, sufficient adhesion can be obtained, but the vividness of the color tends to be inferior when the pattern layer is formed.

  Further, the screen ink for forming the receiving layer has an average particle size of 3 to 5 μm, a high whiteness, and a high purity with a whiteness of 98% or more in order to sufficiently express the texture of the powder of rock paint. It is preferable to contain calcium carbonate powder.

  The thickness of the receiving layer 3 is about 12 to 25 μm, and the surface thereof reflects the uneven shape of the underlying uneven layer 2 having the above-described unevenness of a rock-like color.

  The receiving layer 3 is not only formed on the entire surface, but may be partially formed depending on the picture layer.

[Picture layer]
The pattern layer 4 is formed on the receiving layer 3 by an ink jet printer. The pattern layer 4 formed on the surface of the receiving layer 3 reflecting the uneven shape of the underlying uneven layer 2 having the unevenness of the rock paint tone can express the unevenness of the rock paint tone itself and is more unique to the rock paint that is closer to the real thing A high-quality reproduction of the image can be obtained.

  Examples of the present invention will be described below. In addition, all the parts described below are parts by weight.

<Example 1>
As an example of the first duplicate image of the present invention, an example will be described in which a base uneven layer and a receiving layer are formed on an image paper as follows, and a picture layer is formed on the receiving layer by an ink jet printer.

[Formation of ground relief layer]
An ink for forming the base uneven layer was prepared using the following liquid A and liquid B (liquid A / liquid B = 100 parts / 30 parts), 80 mesh (film thickness: 8 μm) as a screen plate, solid plate (100% Using a screen printing method, coating was carried out on an art paper (kaki: 300 g / m ² ) by a screen printing method.
Liquid A: Carboxymethyl cellulose (# 1190 / manufactured by Daicel Chemical Industries)
1.6 parts water 100 parts cold water powder (particle size 300 μm or less) 220 parts calcium carbonate (particle size 3 to 5 μm)
(Shell Lime HPC / Hokkaido Kyodo Lime Co., Ltd.) 50 parts B liquid: Ethylene vinyl acetate emulsion (EH-004, Nitta Gelatin Co., Ltd.)
100 parts water 10 parts

  The cold water powder used in this experimental example has a first peak in the vicinity of a particle size of 60 to 70 μm and a second peak in the vicinity of a particle size of 190 to 200 μm in the particle size distribution.

Further, the resulting substrate concavoconvex layer, the average height difference between the raised portion and the depressed portion 70～90Myuemu, the formation density of the projections or / and recesses 80 to 800 pieces / cm ^2, the average formation of projections or / and recesses The density was 370 to 410 pieces / cm ² .

[Formation of receiving layer]
A receiving layer forming ink was prepared using the following liquid A, liquid B and a curing agent (isocyanate “Aquanate # 120” manufactured by Nippon Polyurethane Industry Co., Ltd.) (liquid A / liquid B / curing agent = 70 parts / 100 parts / 10 parts), 150 mesh (film thickness: 8 μm) as a screen plate, and a solid plate (100% halftone plate) were used, and the coating was applied on the underlying uneven layer by a screen printing method. The reason why 150 mesh is used as the screen plate is to follow the unevenness of the underlying uneven layer by using a finer plate than when forming the underlying uneven layer. In the present invention, 150 to 200 mesh is preferably used.
Liquid A: 6% PVA aqueous solution (# 224 / manufactured by Kuraray Co., Ltd.) 100 parts silica (average particle size: 5.5 μm)
(G-0166 / manufactured by Tosoh Silica Co., Ltd.) 15 parts B liquid: 6% PVA aqueous solution (# 224 / manufactured by Kuraray Co., Ltd.) 100 parts calcium carbonate (particle size 3-5 μm, whiteness 98%)
(Shell Lime HPC / Hokkaido Kyodo Lime Co., Ltd.) 50 parts

  Next, when a pattern layer was formed on the receiving layer by an ink jet printer and the texture reproducibility was evaluated by visual observation, the pattern layer itself was able to fully express the unevenness of the rock paint tone, and the unique uneven feel of the rock paint A high quality textured copy was obtained.

<Example 2>
As an example of the second reproduction of the present invention, an example in which an anti-curl layer, a base uneven layer and a receiving layer are formed on an image paper as follows, and a pattern layer is formed on the receiving layer by an ink jet printer. explain.

[Formation of anti-curl layer]
Screen printing method using ink for forming an anti-curl layer, 200 mesh (film thickness: 8 μm) as a screen plate, solid plate (100% halftone plate), and drawing paper (fabriano paper: 220 g / m ² ) Printed twice. As the oil-based ink, white ink (JRP White / manufactured by Seiko Advance Co., Ltd.) was used.

[Formation of ground relief layer]
The same as in the first embodiment.

In the obtained base uneven layer, the average height difference between the convex portions and the concave portions is 70 to 90 μm, the formation density of the convex portions or / and the concave portions is 80 to 800 pieces / cm ² , and the average formation density of the convex portions or / and the concave portions is It was 370 to 410 pieces / cm ² .

[Formation of receiving layer]
Example 1 is the same as Example 1 except that the substrate is printed twice on the underlying uneven layer by screen printing.

  Next, when a pattern layer was formed on the receiving layer by an ink jet printer, a high-quality reproduction having a textured texture peculiar to rock paints was obtained in the same manner as in Example 1. No longer absorbs, prevents paper curling, and more stable output of inkjet printer.

<Example 3>
As an example of the third duplicated image of the present invention, an example will be described in which a base concavo-convex layer and a receiving layer are formed on an image paper as follows, and a pattern layer is formed on the receiving layer by an ink jet printer.

[Formation of ground relief layer]
An ink for forming the base uneven layer was prepared using the following liquid A and liquid B (liquid A / liquid B = 100 parts / 30 parts), 80 mesh (film thickness: 8 μm) as a screen plate, solid plate (100% Using a screen printing method, coating was carried out on an art paper (kaki: 300 g / m ² ) by a screen printing method.
Liquid A: Carboxymethyl cellulose (# 1190 / manufactured by Daicel Chemical Industries)
1.6 parts water 100 parts cold water powder (particle size 300 μm or less) 220 parts calcium carbonate (particle size 3 to 5 μm)
(Shell Lime HPC / Hokkaido Kyodo Lime Co., Ltd.) 50 parts B liquid: Ethylene vinyl acetate emulsion (EH-004, Nitta Gelatin Co., Ltd.)
100 parts water 10 parts

  In addition, the cold water powder used in this experimental example has a peak in the vicinity of a particle size of 70 to 90 μm in the particle size distribution.

Moreover, the average height difference of a convex part and a recessed part of the obtained base uneven | corrugated layer is 80-95 micrometers, the formation density of a convex part or / and a recessed part is 190-1100 piece / cm < ² >, and average formation of a convex part or / and a recessed part The density was 450 to 490 / cm ² .

[Formation of receiving layer]
A receiving layer forming ink was prepared using the following liquid A, liquid B and a curing agent (isocyanate “Aquanate # 120” manufactured by Nippon Polyurethane Industry Co., Ltd.) (liquid A / liquid B / curing agent = 70 parts / 100 parts / 10 parts), 150 mesh (film thickness: 8 μm) as a screen plate, and a solid plate (100% halftone plate) were used, and the coating was applied on the underlying uneven layer by a screen printing method. The reason why 150 mesh is used as the screen plate is to follow the unevenness of the underlying uneven layer by using a finer plate than when forming the underlying uneven layer. In the present invention, 150 to 200 mesh is preferably used.
Liquid A: 6% PVA aqueous solution (# 224 / manufactured by Kuraray Co., Ltd.) 100 parts silica (average particle size: 5.5 μm)
(G-0166 / manufactured by Tosoh Silica Co., Ltd.) 15 parts B liquid: 6% PVA aqueous solution (# 224 / manufactured by Kuraray Co., Ltd.) 100 parts calcium carbonate (particle size 3-5 μm, whiteness 98%)
(Shell Lime HPC / Hokkaido Kyodo Lime Co., Ltd.) 50 parts

  Next, a pattern layer was formed on the receptive layer with an ink jet printer, and the texture reproducibility was evaluated by visual inspection. The pattern layer itself was able to fully express the irregularities of the rock paint tone, giving the texture of the rock texture unique to the rock paint. A high quality textured copy was obtained.

<Example 4>
As an example of the fourth reproduction of the present invention, an example in which an anti-curl layer, a base uneven layer and a receiving layer are formed on an image paper as follows, and a pattern layer is formed on the receiving layer by an ink jet printer. explain.

[Formation of anti-curl layer]
Screen printing method using ink for forming an anti-curl layer, 200 mesh (film thickness: 8 μm) as a screen plate, solid plate (100% halftone plate), and drawing paper (fabriano paper: 220 g / m ² ) Printed twice. As the oil-based ink, white ink (JRP White / manufactured by Seiko Advance Co., Ltd.) was used.

[Formation of ground relief layer]
The same as in the third embodiment.

The resulting base uneven layer has an average height difference of 80 to 95 μm between the convex portions and the concave portions, a formation density of the convex portions or / and concave portions of 190 to 1100 pieces / cm ² , and an average formation density of the convex portions or / and concave portions is It was 450 to 490 / cm ² .

[Formation of receiving layer]
Example 3 is the same as Example 3 except that the substrate is printed twice on the underlying uneven layer by screen printing.

  Next, when a pattern layer was formed on the receiving layer by an ink jet printer, as in Example 3, a high-quality reproduction having a textured texture peculiar to rock paints was obtained. No longer absorbs paper, prevents paper curling, and stabilizes the output of the inkjet printer.

<Example 5>
As an example of the fifth duplicated image of the present invention, an example will be described in which a base uneven layer and a receiving layer are formed on an image material paper as follows, and a picture layer is formed on the receiving layer by an ink jet printer.

[Formation of ground relief layer]
An ink for forming the base uneven layer was prepared using the following liquid A and liquid B (liquid A / liquid B = 100 parts / 30 parts), 80 mesh (film thickness: 8 μm) as a screen plate, solid plate (100% Using a screen printing method, coating was carried out on an art paper (kaki: 300 g / m ² ) by a screen printing method.
Liquid A: Carboxymethyl cellulose (# 1190 / manufactured by Daicel Chemical Industries)
1.6 parts water 100 parts cold water powder (particle size 300 μm or less) 220 parts calcium carbonate (particle size 3 to 5 μm)
(Shell Lime HPC / Hokkaido Kyodo Lime Co., Ltd.) 50 parts B liquid: Ethylene vinyl acetate emulsion (EH-004, Nitta Gelatin Co., Ltd.)
100 parts water 10 parts

  In addition, the cold water powder used in this experimental example has a peak in the vicinity of a particle size of 40 to 50 μm in its particle size distribution.

Moreover, the average height difference of a convex part and a recessed part of the obtained base uneven | corrugated layer is 30-50 micrometers, the formation density of a convex part or / and a recessed part is 80-800 piece / cm < ² >, and average formation of a convex part or / and a recessed part The density was 370 to 410 pieces / cm ² .

[Formation of receiving layer]
A receiving layer forming ink was prepared using the following liquid A, liquid B and a curing agent (isocyanate “Aquanate # 120” manufactured by Nippon Polyurethane Industry Co., Ltd.) (liquid A / liquid B / curing agent = 70 parts / 100 parts / 10 parts), 150 mesh (film thickness: 8 μm) as a screen plate, and a solid plate (100% halftone plate) were used, and the coating was applied on the underlying uneven layer by a screen printing method. The reason why 150 mesh is used as the screen plate is to follow the unevenness of the underlying uneven layer by using a finer plate than when forming the underlying uneven layer. In the present invention, 150 to 200 mesh is preferably used.
Liquid A: 6% PVA aqueous solution (# 224 / manufactured by Kuraray Co., Ltd.) 100 parts silica (average particle size: 5.5 μm)
(G-0166 / manufactured by Tosoh Silica Co., Ltd.) 15 parts B liquid: 6% PVA aqueous solution (# 224 / manufactured by Kuraray Co., Ltd.) 100 parts calcium carbonate (particle size 3-5 μm, whiteness 98%)
(Shell Lime HPC / Hokkaido Kyodo Lime Co., Ltd.) 50 parts

  Next, a pattern layer was formed on the receptive layer with an ink jet printer, and the texture reproducibility was evaluated by visual inspection. The pattern layer itself was able to fully express the irregularities of the rock paint tone, giving the texture of the rock texture unique to the rock paint. A high quality textured copy was obtained.

<Example 6>
As an example of the sixth reproduction of the present invention, an example in which an anti-curl layer, a base uneven layer and a receiving layer are formed on an art paper as follows, and a pattern layer is formed on the receiving layer by an ink jet printer. explain.

[Formation of anti-curl layer]
Screen printing method using ink for forming an anti-curl layer, 200 mesh (film thickness: 8 μm) as a screen plate, solid plate (100% halftone plate), and drawing paper (fabriano paper: 220 g / m ² ) Printed twice. As the oil-based ink, white ink (JRP White / manufactured by Seiko Advance Co., Ltd.) was used.

[Formation of ground relief layer]
The same as in the fifth embodiment.

The resulting base uneven layer has an average height difference of 30-50 μm between protrusions and recesses, a formation density of protrusions or / and recesses of 80-800 / cm ² , and an average formation density of protrusions or / and recesses is It was 370 to 410 pieces / cm ² .

[Formation of receiving layer]
Example 5 is the same as Example 5 except that the substrate was printed twice on the underlying uneven layer by screen printing.

  Next, when a pattern layer was formed on the receiving layer by an ink jet printer, a high-quality reproduction having a textured texture peculiar to rock paints was obtained in the same manner as in Example 5. Further, the base material absorbed moisture in each layer. No longer absorbs, prevents paper curling, and more stable output of inkjet printer.

<Example 7>
As an example of the seventh duplicated image of the present invention, an example will be described in which a base uneven layer and a receiving layer are formed on an image material paper as follows, and a picture layer is formed on the receiving layer by an ink jet printer.

[Formation of ground relief layer]
An ink for forming a base uneven layer was prepared using the following liquid A and liquid B (liquid A / liquid B = 100 parts / 30 parts), 100 mesh (film thickness: 8 μm) as a screen plate, solid plate (100% Using a screen printing method, coating was carried out on an art paper (kaki: 300 g / m ² ) by a screen printing method.
Liquid A: Carboxymethyl cellulose (# 1190 / manufactured by Daicel Chemical Industries)
1.6 parts water 100 parts cold water powder (particle size 300 μm or less) 220 parts calcium carbonate (particle size 3 to 5 μm)
(Shell Lime HPC / Hokkaido Kyodo Lime Co., Ltd.) 50 parts B liquid: Ethylene vinyl acetate emulsion (EH-004, Nitta Gelatin Co., Ltd.)
100 parts water 10 parts

  In addition, the cold water powder used in this experimental example has a peak in the vicinity of a particle size of 20 to 30 μm in the particle size distribution.

Further, the resulting substrate concavoconvex layer, the average height difference between the raised portion and the depressed portion 25～45Myuemu, the formation density of the projections or / and recesses 20 to 500 pieces / cm ^2, the average formation of projections or / and recesses The density was 150 to 190 pieces / cm ² .

[Formation of receiving layer]
A receiving layer forming ink was prepared using the following liquid A, liquid B and a curing agent (isocyanate “Aquanate # 120” manufactured by Nippon Polyurethane Industry Co., Ltd.) (liquid A / liquid B / curing agent = 70 parts / 100 parts / 10 parts), 150 mesh (film thickness: 8 μm) as a screen plate, and a solid plate (100% halftone plate) were used, and the coating was applied on the underlying uneven layer by a screen printing method. The reason why 150 mesh is used as the screen plate is to follow the unevenness of the underlying uneven layer by using a finer plate than when forming the underlying uneven layer. In the present invention, 150 to 200 mesh is preferably used.
Liquid A: 6% PVA aqueous solution (# 224 / manufactured by Kuraray Co., Ltd.) 100 parts silica (average particle size: 5.5 μm)
(G-0166 / manufactured by Tosoh Silica Co., Ltd.) 15 parts B liquid: 6% PVA aqueous solution (# 224 / manufactured by Kuraray Co., Ltd.) 100 parts calcium carbonate (particle size 3-5 μm, whiteness 98%)
(Shell Lime HPC / Hokkaido Kyodo Lime Co., Ltd.) 50 parts

  Next, a pattern layer was formed on the receptive layer with an ink jet printer, and the texture reproducibility was evaluated by visual inspection. The pattern layer itself was able to fully express the irregularities of the rock paint tone, giving the texture of the rock texture unique to the rock paint. A high quality textured copy was obtained.

<Example 8>
As an example of the eighth duplicated image of the present invention, an anti-curl layer, a base uneven layer and a receiving layer are formed on an art paper as follows, and a picture layer is formed on the receiving layer by an ink jet printer. explain.

[Formation of anti-curl layer]
Screen printing method using ink for forming an anti-curl layer, 200 mesh (film thickness: 8 μm) as a screen plate, solid plate (100% halftone plate), and drawing paper (fabriano paper: 220 g / m ² ) Printed twice. As the oil-based ink, white ink (JRP White / manufactured by Seiko Advance Co., Ltd.) was used.

[Formation of ground relief layer]
The same as in Example 7.

The resulting base uneven layer has an average height difference of 25 to 45 μm between the convex portion and the concave portion, a formation density of the convex portion or / and the concave portion of 20 to 500 / cm ² , and an average formation density of the convex portion or / and the concave portion is It was 150 to 190 cells / cm ^2.

[Formation of receiving layer]
Example 7 is the same as Example 7 except that the substrate is printed twice on the underlying uneven layer by screen printing.

  Next, when a pattern layer was formed on the receiving layer by an ink jet printer, as in Example 7, a high-quality reproduction having a textured texture peculiar to rock paints was obtained. No longer absorbs, prevents paper curling, and more stable output of inkjet printer.

<Example 9>
As an example in which the receiving layer is in contact with the anti-curl layer, a transparent anti-curl layer is formed on the Japanese paper as follows, a transparent receiving layer is formed on the anti-curl layer, and an ink jet is formed on the transparent receiving layer. An example in which a pattern layer is formed by a printer will be described.

[Formation of anti-curl layer]
Calcium carbonate (Hokkaido Kyodo Lime IIPC) was blended in the proportions shown in Tables 1 to 3 with 100 parts by weight of 55-85% diglycerin (diglycerin 801 (manufactured by Sakamoto Yakuhin Kogyo)) in the ink for forming an anti-curl layer. Using water-based ink, 350 mesh (film thickness: 8 μm) as a screen plate, solid plate (100% screen), printed on Japanese paper (special paper No. 2 paper: 110 g / m ² ) by silk screen printing did.

[Formation of receiving layer]
A receiving layer forming ink was prepared using the following liquid A, liquid B and a curing agent (isocyanate “Aquanate # 120” manufactured by Nippon Polyurethane Industry Co., Ltd.) (liquid A / liquid B / curing agent = 50 parts / 50 parts / 10 parts), 150 mesh (film thickness: 8 μm) as a screen plate, solid plate (100% halftone plate), and coated on the anti-curl layer by a silk screen printing method.
Liquid A: 6% PVA aqueous solution (# 224 / Kuraray Co., Ltd.) 100 parts Hydrous silica (average particle size: 5.5 μm)
(G-0166 / manufactured by Tosoh Silica Co., Ltd.) 15 parts B liquid: 6% PVA aqueous solution (# 224 / manufactured by Kuraray Co., Ltd.) 100 parts anhydrous silica (average particle size: 5.5 μm)
(Aerosil 380S / Nippon Aerosil Co., Ltd.) 8 parts

  Next, a pattern layer was formed on the receiving layer by an ink jet printer and evaluated by the following method. The evaluation is shown in Tables 1-3. When the evaluation of the curl prevention effect was Δ or ×, no other evaluation was performed.

(1) Anti-curl effect The following criteria evaluated whether the print head of a printer contacted the edge of printing paper.
○: Printing without touching the printing paper.
Δ: Slightly contacts the edge of the printing paper, but does not affect the printing quality.
X: Touch the edge of the printing paper and affect the print quality.

(2) Adhesion The following criteria evaluated the adhesion of the receiving layer.
○: Receiving layer forming ink does not adhere to fingers even when rubbed with fingers.
Δ: When rubbed with a finger, the receiving layer forming ink slightly adheres to the finger.
X: When rubbed with a finger, the receiving layer forming ink adheres to the finger, and a part thereof peels off from the printing paper.

(3) Printability The ease of printing (ink viscosity) and the ease of drying (ink dryness) of the anti-curl layer were evaluated according to the following criteria.
○: No problem with ease of printing (ink viscosity) and ease of drying (ink drying).
Δ: Ease of printing (ink viscosity) or easiness of drying (ink drying property) is slightly bad.
X: Ease of printing (ink viscosity) or ease of drying (ink drying property) is poor.

(4) Print quality About the pattern output with the inkjet printer, the color developability and ink bleeding were visually evaluated according to the following criteria.
○: Good color developability, no ink bleeding.
Δ: Color development is slightly inferior or ink bleeding is slightly
X: Color developability is inferior or ink bleeding occurs.

It is sectional drawing which showed typically a part of 1st, 3rd, 5th and 7th reproduction of this invention. It is sectional drawing which showed typically a part of 2nd, 4th, 6th, and 8th reproduction of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base material 2 Base uneven | corrugated layer 3 Receiving layer 4 Picture layer 5 Anti-curl layer 6 Printing paper

Claims (26)

A printing paper having a base concavo-convex layer formed on a substrate and a receiving layer formed on the base concavo-convex layer, wherein the base concavo-convex layer has an average height difference of 70-90 μm between a convex portion and a concave portion. A printing paper characterized by being in a range and having a formation density of convex portions or / and concave portions in a range of 80 to 800 pieces / cm ² . A printing paper having an anti-curl layer formed on a substrate, a base uneven layer formed on the anti-curl layer, and a receiving layer formed on the base uneven layer, wherein the base uneven layer is The printing paper is characterized in that the average height difference between the convex part and the concave part is in the range of 70 to 90 μm, and the formation density of the convex part or / and the concave part is in the range of 80 to 800 pieces / cm ² .   The anti-curl layer comprises 60 to 80 parts by weight of diglycerin and 40 to 20 parts by weight of water (both are 100 parts by weight in total), and 3 to 39 parts by weight of carbonic acid with respect to 100 parts by weight of diglycerin and water in total. The printing paper according to claim 2, wherein the printing paper is formed of a water-based ink containing calcium. The underlying uneven layer, the printing paper according to any one of claims 1 to 3 mean the formation density of the projections or / and recesses, characterized in that in the range of 370 to 410 pieces / cm ^2.   The printing paper according to any one of claims 1 to 4, wherein the base uneven layer contains cold water powder and calcium carbonate powder.   The cold water powder has a particle size of 300 μm or less, and has a first peak in the particle size range of 60 to 70 μm and a second peak in the particle size range of 190 to 200 μm in the particle size distribution. The printing paper according to claim 5, wherein the calcium carbonate powder has an average particle size of 3 to 5 μm. A printing paper having a base concavo-convex layer formed on a substrate and a receiving layer formed on the base concavo-convex layer, wherein the base concavo-convex layer has an average height difference of 80 to 95 μm between the convex and concave portions. A printing paper, wherein the density is within a range and the formation density of convex portions or / and concave portions is within a range of 190 to 1100 pieces / cm ² . A printing paper having an anti-curl layer formed on a substrate, a base uneven layer formed on the anti-curl layer, and a receiving layer formed on the base uneven layer, wherein the base uneven layer is The printing paper is characterized in that the average height difference between the convex part and the concave part is in the range of 80 to 95 μm, and the formation density of the convex part or / and the concave part is in the range of 190 to 1100 / cm ² .   The anti-curl layer comprises 60 to 80 parts by weight of diglycerin and 40 to 20 parts by weight of water (both are 100 parts by weight in total), and 3 to 39 parts by weight of carbonic acid with respect to 100 parts by weight of diglycerin and water in total. The printing paper according to claim 8, wherein the printing paper is formed of a water-based ink containing calcium. The underlying uneven layer, the printing paper according to any one of claims 7 to 9 mean the formation density of the projections or / and recesses, characterized in that in the range of 450 to 490 pieces / cm ^2.   The printing paper according to any one of claims 7 to 10, wherein the base uneven layer contains cold water powder and calcium carbonate powder.   The cold water powder has a particle size of 300 μm or less, has a peak in the particle size range of 70 to 90 μm in the particle size distribution, and the calcium carbonate powder has an average particle size of 3 to 5 μm. The printing paper according to claim 11. A printing paper having a base concavo-convex layer formed on a substrate and a receiving layer formed on the base concavo-convex layer, wherein the base concavo-convex layer has an average height difference of 30 to 50 μm between a convex portion and a concave portion. A printing paper characterized by being in a range and having a formation density of convex portions or / and concave portions in a range of 80 to 800 pieces / cm ² . A printing paper having an anti-curl layer formed on a substrate, a base uneven layer formed on the anti-curl layer, and a receiving layer formed on the base uneven layer, wherein the base uneven layer is The printing paper is characterized in that the average height difference between the convex part and the concave part is in the range of 30 to 50 μm, and the formation density of the convex part or / and the concave part is in the range of 80 to 800 / cm ² .   The anti-curl layer comprises 60 to 80 parts by weight of diglycerin and 40 to 20 parts by weight of water (both are 100 parts by weight in total), and 3 to 39 parts by weight of carbonic acid with respect to 100 parts by weight of diglycerin and water in total. The printing paper according to claim 14, wherein the printing paper is formed of a water-based ink containing calcium. The underlying uneven layer, the printing paper according to any one of claims 13 to 15 average formation density of the projections or / and recesses, characterized in that in the range of 370 to 410 pieces / cm ^2.   The printing paper according to any one of claims 13 to 16, wherein the foundation uneven layer contains cold water powder and calcium carbonate powder.   The cold water powder has a particle size of 300 μm or less, and in its particle size distribution, has a peak in the range of 40 to 50 μm, and the average particle size of the calcium carbonate powder is 3 to 5 μm. The printing paper according to claim 17. A printing paper having a base concavo-convex layer formed on a substrate and a receiving layer formed on the base concavo-convex layer, wherein the base concavo-convex layer has an average height difference of 25 to 45 μm between a convex portion and a concave portion. A printing paper, characterized in that it is within a range and the formation density of convex portions or / and concave portions is within a range of ²⁰ to 500 pieces / cm ² . A printing paper having an anti-curl layer formed on a substrate, a base uneven layer formed on the anti-curl layer, and a receiving layer formed on the base uneven layer, wherein the base uneven layer is The printing paper is characterized in that the average height difference between the convex portions and the concave portions is in the range of 25 to 45 μm, and the formation density of the convex portions or / and the concave portions is in the range of ²⁰ to 500 / cm ² .   The anti-curl layer comprises 60 to 80 parts by weight of diglycerin and 40 to 20 parts by weight of water (both are 100 parts by weight in total), and 3 to 39 parts by weight of carbonic acid with respect to 100 parts by weight of diglycerin and water in total. The printing paper according to claim 20, wherein the printing paper is formed of a water-based ink containing calcium. The underlying uneven layer, the printing paper according to any one of claims 19 to 21 average formation density of the projections or / and recesses, characterized in that in the range of 150 to 190 pieces / cm ^2.   The printing paper according to any one of claims 19 to 22, wherein the base uneven layer contains cold water powder and calcium carbonate powder.   The cold water powder has a particle size of 300 μm or less, has a peak in the range of 20 to 30 μm in particle size distribution, and the calcium carbonate powder has an average particle size of 3 to 5 μm. The printing paper according to claim 23.   The printing paper according to any one of claims 1 to 24, wherein the receiving layer contains calcium carbonate powder having an average particle diameter of 3 to 5 µm and a whiteness of 98% or more.   A duplicate image comprising a pattern layer on the printing paper according to any one of claims 1 to 25.

Images