JP3372709B2 - Inkjet recording medium and recorded matter - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet recording medium having an ink receiving layer on at least one side of a substrate and a recorded matter.

[0002]

2. Description of the Related Art Ink jet recording methods include various ink ejection methods such as an electrostatic suction method, a method in which a piezoelectric element is used to mechanically vibrate or displace ink, ink is heated to foam, and the pressure is used. Method, etc., to generate and fly small droplets of ink, and part or all of them are adhered to a recording material (recording medium) such as paper or a plastic film coated with an ink receiving layer for recording. However, it is attracting attention as a method that can generate high-speed printing and multicolor printing with less noise.

As the ink for the ink jet recording system, one mainly containing water is used in view of safety and recording characteristics, and a polyhydric alcohol is used for preventing nozzle clogging and improving ejection stability. It is often the case that substances are added.

As a recording medium used for ink jet recording, various kinds of paper, OHP film, glossy paper, glossy film, cloth and the like have been developed and provided to users. At the same time, the method of transporting the printer itself has changed, and the transport of recording media by an auto sheet feeder (hereinafter referred to as ASF) has become the mainstream, instead of the conventional manual transport.

As a recording medium conventionally used for ink jet recording, as described in JP-A-60-220750, a hydrophilic property of a water-soluble polyvinyl alcohol having a saponification degree of 70 to 90 mol% on a polyester film. Recording sheet for overhead projector (OHP) provided with a film, and Japanese Patent Publication No. 3-2
As described in Japanese Patent No. 6665, recording paper in which a coating layer containing fine powder silica and a water-soluble binder such as polyvinyl alcohol is provided on a base paper, and Japanese Patent Publication No. 5-3623.
As described in Japanese Patent Publication No. 7, a glossy paper in which a film mainly composed of a water-soluble resin is formed on an opaque substrate such as synthetic paper has been used. Further, Japanese Patent Laid-Open No. 63-265680 describes a cast-coated paper for inkjet recording in which a coating layer mainly containing silica and a binder is provided by a casting method.

[0006] In recent years, with the improvement of the performance of the ink jet recording apparatus such as high speed recording and multi-color recording, more advanced and wide range characteristics are required for the ink jet recording medium.

That is, (1) ink absorption capacity is high (absorption capacity is large, absorption time is fast) (2) dot optical density is high, and the dot periphery is not blurred (3) dot shape is a perfect circle (4) The characteristics change little due to changes in temperature and humidity, and curl does not occur (5) Blocking does not occur (6) The image is stable for long-term storage and does not deteriorate That (especially,
(Under high temperature and high humidity environment) (7) It is required that the recording medium itself be stable and not deteriorated during long-term storage (especially under high temperature and high humidity environment). Further, as the recording speed increases, the image density increases, the colors change, and the ink diversifies, various recording media have come to be required.

The ink jet recording sheet described in Japanese Patent Publication No. 3-26665 has a matte surface and no gloss. On the other hand, the glossy paper described in JP-B-5-36237 is capable of forming an image with high gloss and high density as compared with the conventional paper, but the gloss itself of the unprinted portion is not sufficiently satisfactory. In addition, the specular gloss of the conventional recording medium tends to gradually increase when continuously measured from 20 degrees to 75 degrees, and the 75 degree specular gloss when the recording medium is viewed from an oblique direction has the maximum value. I had one. Therefore, in the conventional case, the dynamic color / tone expression is insufficient because the glossiness of the unprinted part is not sharp. Further, since it had a maximum gloss value of 75 ° specular gloss, sufficient gloss could not be obtained on the recording medium unless the recording medium was observed obliquely.

The specular gloss of a conventional ink jet recorded product tends to gradually increase when continuously measured from 20 ° to 75 °, and the specular gloss of 75 ° when the recorded product is viewed from an oblique direction. Had the maximum value.
Therefore, in the conventional case, the glossiness of the printed portion is not sharp, and thus dynamic color / tone expression is insufficient. Further, since it had a maximum gloss value of 75 ° specular gloss, sufficient gloss could not be obtained on the recorded matter unless the recorded matter was observed obliquely.

Further, the recorded matter similar to the present invention has already been provided to the user by a printed matter such as offset printing, letterpress printing, gravure printing, etc. However, since the printing method is unique, all users can use it. Was not satisfied with.

[0011]

Therefore, the first aspect of the present invention
It is an object of the present invention to provide a recording medium which has excellent decorativeness because the recording medium has sufficient gloss and which can express dynamic colors and color tones.

The second object of the present invention is to obtain a sufficient glossiness in a recorded matter having a hue of yellow, magenta and cyan, thereby having excellent decorativeness, and
It is to provide a recorded material in which dynamic color / tone expression is performed.

[0013]

Means and Actions for Solving the Problems The first object is to provide the following invention, namely, " having an ink receiving layer on at least one surface of a substrate, which is formed by the ink receiving layer". > The maximum value of the specular gloss of the recording surface is 20 degrees to 60 degrees of the measurement angle.
An inkjet recording medium in the range of time, before
The base material is a transparent base material, and a metal is formed on one surface of the transparent base material.
A film is provided, and an ink receiving layer is provided on the surface opposite to the metal film.
Having the configuration provided and on the surface of the transparent substrate on the metal film side.
An inkjet recording medium characterized by having fine irregularities, and having a specular gloss of 100% or more at a measurement angle of 20 to 75 degrees , and / or
Is achieved by an inkjet recording medium including a substrate as a plastic film.

A recording medium having excellent decorativeness and capable of expressing dynamic colors and tones means an inkjet recording medium having an ink receiving layer on at least one surface of a base material at 20 ° C. A recording medium having a maximum value of specular gloss in the range of 60 degrees, and further 20 degrees to 7
An inkjet recording medium having a specular gloss value of 100% or more within a measurement angle of 5 degrees. 6
When the maximum value of the specular glossiness is obtained at a value larger than 0 degrees, the maximum value of the specular optical degree cannot be obtained without observing the line of sight with respect to the recording medium. In addition, if the specular glossiness is less than 100% at all angles, the lack of overall glossiness cannot be wiped off like the glossy paper conventionally provided. Furthermore, in practice, there are more opportunities to directly face the recording medium than to observe it obliquely. By using the above-mentioned recording medium, it becomes possible to provide the observer with a sufficient glossiness and excellent decorativeness, and to give a dynamic color / tone expression.

The second object of the present invention is as follows. That is, the ink jet printer using the recording medium having the above-mentioned structure is used.
When the recording surface has 100% solid portions of yellow, magenta, and cyan on the recording surface, and the specular glossiness of the 100% solid portions at a measurement angle of 20 to 75 degrees is measured,
At least one of the three colors of yellow, magenta, and cyan has a maximum value of specular gloss in the range of measurement angles of 20 to 60 degrees, and at a measurement angle of 20 to 75 degrees. "A recorded material including a material having a specular gloss of 100% or more, and a substrate may be a plastic film".

The present inventor has developed a recording medium suitable for ink jet recording, and the recorded matter has excellent decorativeness and is a recorded matter having a dynamic color / tone expression. The present invention has been completed and the present invention has been completed.

A recorded matter having an excellent decorative property and having a dynamic color / tone expression is a recorded matter using a recording medium having an ink receiving layer on at least one surface of a base material of the recording medium. When measuring the specular glossiness at a measurement angle of 20 ° to 75 ° in each of the 100% solid portions of yellow, magenta, and cyan, at least one of the three colors of yellow, magenta, and cyan has a measurement angle of 20 ° to 60 °. Is a recorded matter having the maximum value of the specular glossiness in the range of, and the value of the specular glossiness at the measurement angle of 20 to 75 degrees is 100.
It is a recorded material in which more than 100% exists.

When the maximum value of the specular glossiness is obtained when the incident light is larger than 60 degrees, the maximum value of the specular glossiness can be obtained without observing the line of sight with respect to the recording medium. Absent. Also, the specular gloss is 1 at all angles.
If it is less than 00%, the lack of overall glossiness cannot be wiped off like the glossy paper conventionally provided. further,
In practice, there are more opportunities to directly face the recording medium than to observe it obliquely. That is, by using the above-mentioned recorded matter, it is possible to have a sufficient glossiness and excellent decorativeness, and to express dynamic colors and color tones.

Next, the present invention will be described in more detail with reference to preferred embodiments.

The type of the transparent base material used to obtain the recording medium and the recorded matter satisfying the above-mentioned characteristics regarding gloss is not particularly limited as long as the surface of the recording medium or the recorded matter has the above-mentioned physical property values. not that, polyethylene Te <br/> terephthalate, diacetate, triacetate, cellophane, celluloid, polycarbonate, polyimide, polyvinyl chloride, polyvinylidene chloride, consisting of polyacrylates, polyethylene, plastic such as polypropylene film or a glass plate Using
Wear. In the present invention, among these, a substrate having a surface with irregularities and being transparent is used. Further, two or more kinds of these base materials may be bonded to each other .

Further, one having a metal film on one surface of the substrate, one provided with a mat layer, a release adhesive layer, etc. on the opposite side of the printed surface, and one provided with an adhesive layer on the printed surface after printing. May be The thickness of the metal film is 1 angstrom ~
20 μm is preferable. When it is thinner than 1 angstrom, metallic luster peculiar to metal is not obtained, and when it is thicker than 20 μm, the effect of thickening cannot be obtained. Also, metal film
For a substrate having
Process the metal powder in the ink receiving layer.
You may. As an example of the above metal powder, gold, silver,
Metal powders such as copper, brass, aluminum, titanium, magnesium, beryllium, platinum, nickel, cobalt, chromium, palladium, zinc, etc., or those obtained by oxidizing them, or alloys thereof, or of course, these It is not limited to the above metals and the like. Further, instead of the metal powder, a powdery material obtained by finely cutting the formed metal film may be used.

Further, in the present invention, by forming a fine concavo-convex pattern on the surface of the base material , the reflected light causes an interference phenomenon and an image shining in a rainbow color can be formed.

It is appropriately selected from the above-mentioned base materials according to the recording purpose of the recording medium, the intended use of the recorded image, or various conditions such as adhesion to the composition coated on the recording medium.

The material used as the ink receiving layer material is not particularly limited, but is not limited as long as it is capable of receiving a so-called water-based ink and has solubility or affinity for the water-based ink. Pyrrolidone, polyvinyl alcohol, anion-modified polyvinyl alcohol, cation-modified polyvinyl alcohol,
Polyurethane, carboxymethyl cellulose, polyester, polyacrylic acid (ester), hydroxyethyl cellulose, cationized hydroxyethyl cellulose,
Melamine resin, or synthetic resin such as modified products thereof,
In addition, natural resins such as albumin, gelatin, casein, starch, cationized starch, gum arabic, and sodium alginate can be used, but not limited to these. It is also possible to use a plurality of these simultaneously.

Further, a water-dispersible resin may be used as a material for the ink receiving layer, and examples thereof include polyvinyl acetate, ethylene-vinyl acetate copolymer, polystyrene and styrene.
(Meth) acrylic acid ester copolymer, (meth) acrylic acid ester-based polymer, vinyl acetate- (meth) acrylic acid (ester) copolymer, poly (meth) acrylamide, (meth) acrylamide-based copolymer, A large number of styrene-isoprene copolymers, styrene-butadiene copolymers, ethylene-propylene copolymers, polyvinyl ethers, and the like can be listed, but of course the present invention is not limited thereto. A plurality of these water-soluble resins and water-dispersible resins may be used at the same time.

Further, in the sense of improving the image storability,
You may further contain a cationic compound. The cationic compound is not particularly limited as long as it contains a cationic moiety in the molecule.

For example, quaternary ammonium salt type cationic surfactants such as monoalkylammonium chloride, dialkylammonium chloride, tetramethylammonium chloride, trimethylphenylammonium chloride and ethylene oxide-added ammonium chloride, or amine salt type cations. In addition, an amphoteric surfactant such as an alkyl betaine containing a cationic moiety, an imidazolium betaine, and an alanine type may be used.

As the polymer or oligomer, a cation-modified polyacrylamide or a copolymer of acrylamide and a cationic monomer, polyallylamine, polyamine sulfone, polyvinylamine,
Examples thereof include polyethyleneimine, polyamide-epichlorohydrin resin, polyvinylpyridinium halide and the like.

Further, a vinylpyrrolidone-based monomer alone or a copolymer with other general monomers, a vinyloxazolidone-based monomer alone or a copolymer with other general monomers, a vinylimidazole-based monomer Examples thereof include a single substance or a copolymer with another general monomer. Examples of the above-mentioned general monomer include methacrylate, acrylate, acrylonitrile, vinyl ether, vinyl acetate, ethylene and styrene.

The above-mentioned cationic compounds are preferably used, but they may be used alone or in combination of two or more, and a low molecular weight cationic substance and a high molecular weight cationic substance may be used in combination.
Of course, it is not limited to these. In the constitution according to the present invention, the above-mentioned cationic compound is not an essential component, but merely plays an auxiliary role.

Further, a cross-linking agent may be included, such as, but not limited to, methylolated melamine, methylolated urea, methylolated hydroxypropylene urea, and isocyanate.

In order to make the surface smoothness of the ink receiving layer and the film proper, various filler additives can be used in combination within the range not hindering the achievement of the object of the present invention. Examples of the filler include silica, alumina, aluminum silicate, calcium silicate, magnesium silicate, basic magnesium carbonate, talc, clay, ummo, hydrotalcite, calcium carbonate, barium carbonate, titanium oxide, zinc oxide, and Examples thereof include, but are not limited to, plastic pigments such as polyethylene, polystyrene, and polyacrylate, glass beads, and the like.

Specific examples of the additives include various surfactants, dye fixing agents (waterproofing agents), antifoaming agents, antioxidants, optical brighteners, ultraviolet absorbers, dispersants, viscosity modifiers, Examples include pH adjusters, antifungal agents, and plasticizers. These additives may be arbitrarily selected from conventionally known compounds according to the purpose.

In preparing the ink receiving layer of the recording medium or recorded matter of the present invention, first, the above-mentioned composition is used together with other additives, if necessary, in water or alcohol, polyhydric alcohol, or other suitable organic compound. Dissolve or disperse in a solvent to prepare a coating liquid.

The obtained coating liquid is applied, for example, to a roll coater method, a blade coater method, an air knife coater method, a gate roll coater method, a bar coater method, a size press method, a spray coat method, a gravure coater method, a curtain coater method, etc. To coat the surface of the substrate. Then, for example, it is dried using a hot air drying oven, a heating drum or the like to obtain the recording medium of the present invention.

The total coating amount of the ink receiving layer is
0.2 to 50 g / m² , More preferably 1 to 30 g / m
² Within the range of. Part of the base material when the coating amount is small
May be exposed on the surface. Coating amount is 0.2g / m² 
When the ink receiving layer is not provided, the ink receiving layer is not provided
50g / m, which is ineffective in terms of color development of paint compared to ² 
When installed over the temperature range, especially in a low temperature and low humidity environment
Curling is remarkable, which is not preferable. Coating amount by thickness
The coating amount when expressed is 0.5 to 100 μm thick.
Ranges are preferred.

As the ink itself for carrying out ink jet recording on the recording medium described above, known inks can be used without any problems. As the recording agent, a direct dye, an acid dye, a basic dye, a reactive dye, a water-soluble dye typified by an edible pigment, a dispersible dye, and a pigment can be used. It can be used without particular limitation. Such water-soluble dyes or dispersible dyes and pigments are generally used in conventional inks in a proportion of about 0.1 to 20% by weight, and the same may be applied to the present invention.

[0038]

The present invention will be described in more detail with reference to the following examples. In the text, parts and% are based on weight unless otherwise specified.

Example 1 A substrate "Sample Ledger No. 56 manufactured by Murata Gold Leaf Co., Ltd." having a maximum value of specular gloss near an incident angle of light of 45 degrees was used, and polyvinyl alcohol (trade name: PVA) was used as an ink receiving layer.
217, manufactured by Kuraray) After applying a 10% aqueous solution using a wire bar so that the coating thickness after drying is 10 μm, 1
The recording medium of the present invention was prepared by drying at 20 ° C. for 3 minutes. Printing was performed on the recording medium using a color bubble jet printer BJC-600 (trade name) manufactured by Canon.

Example 2 A recording medium was prepared in the same manner as in Example 1 except that the substrate having the maximum value of specular gloss near the incident angle of light of 45 degrees was "Murata Gold Leaf Company's sample ledger No. 03". Was prepared and color recording was performed.

Example 3 A recording medium was prepared in the same manner as in Example 1 except that the base material having the maximum value of the specular gloss near the incident angle of light of 45 degrees was "Sample Ledger No. 75 manufactured by Murata Gold Leaf Co., Ltd." Was prepared and color recording was performed.

Example 4 A recording medium was prepared in the same manner as in Example 1 except that the base material having the maximum value of specular gloss near the incident angle of light of 45 ° was “Sample Ledger No. 101 manufactured by Murata Gold Leaf Company”. Was prepared and color recording was performed.

Example 5 A recording medium was prepared in the same manner as in Example 1 except that the base material having the maximum value of specular gloss near the incident angle of light of 45 ° was “Sample Ledger No. 109 manufactured by Murata Gold Leaf Company”. Was prepared and color recording was performed.

Example 6 A recording medium was prepared in exactly the same manner as in Example 1 except that the substrate having the maximum value of specular gloss near the incident angle of light of 45 ° was “Sample Ledger No. 104 manufactured by Murata Gold Leaf Co., Ltd.” Was prepared and color recording was performed.

Example 7 A polyvinyl acetal (trade name: KW-) was used as an ink receiving layer.
1, manufactured by Sekisui Chemical Co., Ltd., and a recording medium was prepared and color recording was performed in the same manner as in Example 1.

Example 8 Hydroxyethyl cellulose (trade name:
A recording medium was prepared and color recording was carried out in the same manner as in Example 1 except that AL-15, manufactured by Fuji Chemical Co., Ltd. was used.

Example 9 Example 1 was repeated except that the ink receiving layer was a cation-modified polyvinyl alcohol (trade name: CM-318, manufactured by Kuraray).
A recording medium was prepared and color recording was performed in exactly the same manner as in.

Reference Example 1 A bone white PET film (thickness 1
00 μm, bone white Lumirror 100E20 (trade name), manufactured by Toray), and 100 parts of polyvinyl alcohol (trade name: PVA217, manufactured by Kuraray) as an ink receiving layer, and rainbow pieces (sales agency: Kurachi Co., Ltd.) as added particles. , No. 608G) and mixed with Example 1
A recording medium was prepared in the same manner as in 1. and color recording was performed.

Reference Example 2 As a base material of a recording medium, LC-201 (trade name, Can
A recording medium was prepared and color recording was performed in the same manner as in Reference Example 1 except that coated paper manufactured by ON Co., Ltd. was used.

Reference Example 3 As a base material of a recording medium, PPC paper TYPE6000
A recording medium was prepared and color recording was performed in the same manner as in Reference Example 1 except that (trade name, PPC paper manufactured by RICOH) was used.

Comparative Example 1 A white PET film (thickness 10
A recording medium was prepared and color recording was carried out in the same manner as in Example 1 except that the thickness was 0 μm and a white lumirror (trade name) manufactured by Toray).

Comparative Example 2 As a base material of a recording medium, a bone white PET film (thickness 1
A recording medium was prepared and color recording was performed in the same manner as in Example 1 except that the thickness was 00 μm and the bone white lumirror 100E20 (trade name, manufactured by Toray) was used.

Comparative Example 3 As a recording medium, HP 51636J (trade name, HEWLETT
Color recording was performed using PACKARD Glossy Paper).

Comparative Example 4 Color recording was performed using NS-101 (trade name, glossy paper manufactured by Canon Inc.) as a recording medium.

Comparative Example 5 As a recording medium, colored paper (BIO TOP COLOR (trade name), ITO
YA DTP PAPER) was used for color recording.

Comparative Example 6 A bone white PET film (thickness 1
00 μm, bone white lumirror 100E20 (trade name), manufactured by Toray), and 100 parts of polyvinyl alcohol (trade name: PVA217, manufactured by Kuraray) as an ink receiving layer, and silica fine particles (Sylysia 470, average particle diameter 12 μ)
m, manufactured by Fuji Silysia Chemical Ltd.).
A recording medium was prepared and color recording was performed in exactly the same manner as in.

Comparative Example 7 As a base material of a recording medium, LC-201 (trade name, Can
A recording medium was prepared and color recording was performed in exactly the same manner as in Comparative Example 6 except that coated paper manufactured by ON Co. was used.

Comparative Example 8 As a base material for a recording medium, PPC paper TYPE6000
A recording medium was prepared and color recording was carried out in the same manner as in Comparative Example 6 except that (trade name, PPC paper manufactured by RICOH) was used.

The following evaluations were performed on the recorded materials obtained in the above Examples , Reference Examples and Comparative Examples.

Evaluation Items and Evaluation Method Specular Gloss The specular gloss was measured by the following measuring device and measuring method. Using a digital variable angle gloss meter UGV-5D (manufactured by Suga Test Instruments Co., Ltd.), JIS-Z-874 of the unprinted portion of the recording medium is printed.
Specular glossiness based on 1 measurement angle 20 degrees, 45 degrees, 60
Degree and 75 degrees were measured at each of four points, and the average value was taken as the specular gloss at those angles. Specular gloss is 7
Those having the maximum value other than 5 degrees were marked with ◯, and those having the maximum specular gloss at 75 degrees were marked with x.

With respect to the unprinted portion and the printed portion having a decorative property, those having a higher decorative property than those of the PPC paper were evaluated as ◯, and those having a dramatically improved decorative property were evaluated as x.

Evaluation Results FIGS. 1 and 2 are conceptual diagrams showing the relationship between the measurement angle and the specular gloss of the present invention and the conventional example, respectively, and the evaluation results are summarized in Table 1.

[0063]

[Table 1] Example 10 A substrate "Sample Ledger 506 manufactured by Murata Gold Leaf Co., Ltd." having a maximum value of specular gloss near an incident angle of 45 degrees was used, and polyvinyl alcohol (trade name: PVA21 was used as an ink receiving layer.
After applying a 10% aqueous solution using a wire bar so that the coating thickness after drying is 10 μm, 120
A recording medium was prepared by drying at 3 ° C. for 3 minutes. The obtained recording medium is used as a color bubble jet printer B manufactured by Canon.
According to JC-600 (trade name), cyan, magenta,
Each 100% of yellow was printed to obtain the recorded matter of the present invention.

Example 11 A recording medium was prepared in exactly the same manner as in Example 10 except that the substrate having the maximum value of the specular gloss near the incident angle of light of 45 degrees was "Murata Gold Leaf Sample Ledge 84". Then, printing was performed to obtain the recorded matter of the present invention.

Example 12 A recording medium was prepared in exactly the same manner as in Example 10 except that the substrate having the maximum value of the specular gloss near the incident angle of light of 45 ° was “Sample Ledger 103 manufactured by Murata Gold Leaf Company”. Then, printing was performed to obtain the recorded matter of the present invention. Example 13 A recording medium was prepared and printed in exactly the same manner as in Example 10 except that "Murata Gold Leaf Company Sample Ledger 117" was used as the base material having the maximum value of specular gloss near an incident angle of 45 degrees. The recorded matter of the present invention was obtained.

Example 14 A recording medium was prepared in exactly the same manner as in Example 10 , except that "Murata Gold Leaf Company Sample Ledger 155" was used as the substrate having the maximum value of specular gloss near an incident angle of 45 degrees. Then, printing was performed to obtain the recorded matter of the present invention.

Example 15 A recording medium was prepared in exactly the same manner as in Example 10 except that the substrate having the maximum value of the specular gloss near the incident angle of light of 45 ° was “Sample Ledger 204 manufactured by Murata Gold Leaf Company”. Then, printing was performed to obtain the recorded matter of the present invention.

Reference Example 4 A recording medium was prepared and printed in the same manner as in Example 10 except that an Infinitone film (manufactured by Murata Kinfoil Co., Ltd.) was used as the base material of the recording medium to obtain a recorded matter .

Reference Example 5 As a base material of a recording medium, an aluminum vapor deposition film (thickness 10
A recording medium was prepared and printed in the same manner as in Example 10 except that 0 μm, Metal Mie, trade name, manufactured by Toray) was used to obtain a recorded matter .

Example 16 A polyvinyl acetal (trade name: KW-
1, manufactured by Sekisui Chemical Co., Ltd., and a recording medium was prepared and printed in the same manner as in Example 10 to obtain a recorded matter of the present invention.

Example 17 An ink receiving layer was prepared from hydroxyethyl cellulose (trade name:
Example 10 except that AL-15, manufactured by Fuji Chemical Co., Ltd.
A recording medium was prepared and printed in exactly the same manner as in 1. to obtain the recorded matter of the invention.

Example 18 Example 1 was repeated except that a cation-modified polyvinyl alcohol (trade name: CM-318, manufactured by Kuraray) was used as the ink receiving layer.
A recording medium was prepared and printed exactly in the same manner as in No. 0 to obtain the recorded matter of the invention.

Reference Example 6 A white PET film (thickness 10
0 μm, white lumirror, trade name, manufactured by Toray Co., Ltd., and 10 parts of copper powder as additive particles are mixed with 100 parts of cation-modified polyvinyl alcohol (trade name: CM-318, manufactured by Kuraray) as an ink receiving layer material, A recording medium was prepared and printed in the same manner as in Example 10 to obtain a recorded matter .

Reference Example 7 As a base material of a recording medium, NS-101 (trade name, Can
A recording medium was prepared and printed in the same manner as in Reference Example 6 except that gloss paper manufactured by ON Co., Ltd. was used to obtain a recorded matter .

Reference Example 8 PPC paper 4024 (trade name,
Reference example 6 except that PPC paper manufactured by Xerox was used.
A recording medium was prepared and printed in the same manner as above to obtain a recorded matter .

Comparative Example 9 A white PET film (thickness 10
A recording medium was prepared and printed in the same manner as in Example 10 except that 0 μm, white lumirror (trade name) manufactured by Toray) was used.
I got a record.

Comparative Example 10 A bone white PET film (thickness 1
A recording medium was prepared and printed in the same manner as in Example 10 except that the recording medium was 100 μm, bone white Lumirror 100E20 (trade name, manufactured by Toray), and a recorded matter was obtained.

Comparative Example 11 As a base material for a recording medium, HP 51636J (trade name, H
Example 1 using EWLETT PACKARD Glossy Paper)
Printing was performed in the same manner as 0 to obtain a recorded matter.

Comparative Example 12 Using NS-101 (trade name, glossy paper manufactured by Canon Inc.) as a recording medium, printing was performed in the same manner as in Example 10 to obtain a recorded matter.

Comparative Example 13 Color paper (BIO TOP COLOR (trade name), ITO
YA DTP PAPER) and printing was performed in the same manner as in Example 10 to obtain a recorded matter.

Comparative Example 14 As a recording medium, PPC paper 4024 (trade name, Xer
OX PPC paper) was used for printing in the same manner as in Example 10 to obtain a recorded matter.

Comparative Example 15 A white PET film (thickness 10
0 μm, white lumirror (trade name) manufactured by Toray), and 100 parts of cation-modified polyvinyl alcohol (trade name: CM13-318, manufactured by Kuraray) as an ink receiving layer to silica fine particles (Sylysia 470, average particle 12 μm, Fuji Syria Chemical Co., Ltd.) (Manufactured by the same company) was mixed, and a recording medium was prepared and printed in exactly the same manner as in Example 10 to obtain a recorded matter.

Comparative Example 16 As a base material of a recording medium, NS-101 (trade name, Can
A recording medium was prepared and printed in the same manner as in Comparative Example 15 except that glossy paper manufactured by On Co. was used to obtain a recorded matter.

Comparative Example 17 A PPC paper 4024 (trade name,
Comparative Example 1 except that PPC paper manufactured by Xerox Co. was used
A recording medium was prepared and printed in the same manner as 5 to obtain a recorded matter.

The recorded materials obtained in the above Examples , Reference Examples and Comparative Examples were evaluated as follows.

Evaluation Items and Evaluation Method Specular Gloss The specular gloss was measured by the following measuring device and measuring method.

Using a digital variable angle gloss meter UGV-5D (manufactured by Suga Test Instruments Co., Ltd.), each one of yellow, magenta and cyan
Specular glossiness based on JIS-Z-8741 of 100% solid part is measured 5 times at each of 4 points of measurement angles 20 degrees, 45 degrees, 60 degrees and 75 degrees, and the average value is the specular glossiness at those angles. And

When the specular gloss of at least one of the three colors of yellow, magenta and cyan has a maximum value other than the specular gloss of 75 degrees, all three colors have the maximum specular gloss of 75 degrees. The thing was marked as x.

Achievement of specular glossiness All colors of yellow, magenta and cyan have maximum values other than 75 degree specular glossiness, and the maximum value of 100% or more is "A", two colors out of three colors Has the maximum value other than the 75-degree specular glossiness, and the maximum value is 100% or more "B", and one of the three colors has the maximum value other than the 75-degree specular glossiness, and "C" when the maximum value is 100% or more,
At least one of yellow, magenta, and cyan has a maximum value other than 75 ° specular gloss, and the maximum value is 10
Those with less than 0% were designated as "D", and those having the maximum value of 75 degree specular gloss in all colors were designated as "E".

Decorative property of recorded matter: A product having a more decorative property than the PPC paper was evaluated as ◯, and a product having a dramatically improved decorative property was evaluated as x.

Evaluation Results FIGS. 3 and 4 are conceptual diagrams showing the relationship between the measurement angle and the specular gloss of the present invention and the conventional example, respectively, and the evaluation results are summarized in Tables 2 and 3.

[0092]

[Table 2]

[0093]

[Table 3]

[0094]

EFFECT OF THE INVENTION By using the ink jet recording medium provided by the present invention, it is possible to achieve image quality and image expression which cannot be expressed by the conventionally provided recording medium, and further, the recording having the gloss provided conventionally. To provide an inkjet recording medium having excellent decorativeness and capable of dynamic color / tone expression because the maximum glossiness of the medium can be observed in a state of directly facing the recording medium. You can

Further, the recorded matter provided by the present invention is
Unlike the recording medium provided by the conventional printing method, it does not take time and labor, and not only the user-oriented recorded matter is provided, but also as a recorded matter that is difficult to express with the conventional recorded matter. Image quality and image expression of
In addition, compared to the recorded products with gloss that have been provided so far, the maximum value of glossiness can be observed in a form directly facing the recorded product, so that it has excellent decorativeness and dynamic color and
It is possible to provide a recorded matter that enables color tone expression.

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing a relationship between a measurement angle and a specular gloss of a recording medium of the present invention.

FIG. 2 is a conceptual diagram showing a relationship between a measurement angle and a specular gloss of a conventional recording medium.

FIG. 3 is a conceptual diagram showing the relationship between the measurement angle and the specular gloss of the recorded matter of the present invention.

FIG. 4 is a conceptual diagram showing a relationship between a measurement angle of a conventional recorded matter and a specular glossiness.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-61-100490 (JP, A) JP-A-61-189985 (JP, A) JP-A-62-134285 (JP, A) JP-A-4- 59281 (JP, A) JP 4-341885 (JP, A) JP 6-191145 (JP, A) JP 7-112572 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B41M 5/00

Claims (8)

(57) [Claims] [Claim 1 further comprising an ink-receiving layer on at least one surface of the substrate, the maximum value of the specular glossiness of the recording surface of the ink receiving layer formed is in the range of 20 to 60 degrees angles of measurement
An ink jet recording medium , wherein the base material is a transparent base material, and one surface of the transparent base material is gold.
A metal film is provided, and an ink receiving layer is provided on the surface opposite to the metal film.
And a surface of the transparent substrate on the metal film side.
An inkjet recording medium characterized by having fine irregularities on its surface . 2. The maximum value of specular gloss of the recording surface is 10
The ink jet recording according to claim 1, which is 0% or more.
Medium. 3. The transparent substrate is a plastic film
An inkjet recording medium according to claim 1 or 2.
body. 4. The metal film is a metal vapor deposition film.
4. The inkjet recording medium according to any one of item 3. 5. The inkjet recording medium according to claim 1, further comprising a release adhesive layer on the surface of the transparent substrate on which the metal film is provided. 6. The recording medium according to claim 1.
An inkjet recorded matter using a body, the recording surface
Has 100% solid parts for each of yellow, magenta, and cyan
However, the measurement angle of the 100% solid part should be 20 to 75 degrees.
When measuring the specular gloss of yellow, magenta, and sheer
At least one of the three colors has a measurement angle of 20 to 60 degrees.
It is characterized by having a maximum value of specular gloss in the range.
Recording material. 7. 100 each of yellow, magenta and cyan
% In a solid area, a mirror at a measurement angle of 20 to 75 degrees
Specular light of at least one of the three colors when measuring surface gloss
The memory according to claim 6, wherein the maximum value of the temperature is 100% or more.
Recording material. 8. 100 each of yellow, magenta and cyan
% In the solid area, the specular gloss at a measuring angle of 20 to 75 degrees
All three colors of yellow, magenta and cyan are measured when the degree is measured.
Has a maximum specular gloss in the range of 20 to 60 degrees.
The recorded matter according to claim 6, which has a value.