JP2005096391A - Inkjet recording material and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inkjet recording material which is to be suitably used for solvent-based ink, particularly, glycol-based ink. <P>SOLUTION: In this inkjet recording material with an ink absorbing layer, the ink absorbing layer contains a water-insoluble nitrocellulose resin. Preferably, a mean nitrogen content of the nitrocellulose resin is 10.5% or more. Preferably, a number average degree of polymerization of the nitrocellulose resin is 55 or more. Preferably, the nitrocellulose resin is cross-linked and cured in the ink absorbing layer. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a recording material for an ink jet printer, and more particularly to a solvent-based ink, particularly a glycol-based ink, which has excellent recording characteristics, and a method for producing the recording material.

  Conventionally, so-called water-based inks using water and lower alcohol as solvents have been mainstream as inks for inkjet recording. For this reason, many recording materials having an ink receiving layer mainly composed of a water-soluble resin have been developed.

  However, there is a problem that water-based ink is inferior in water resistance. Therefore, in recent years, models using solvent-based inks such as paraffin-based inks and thinner-based inks have started to appear, and recording materials corresponding to the inks have been proposed (see Patent Documents 1 and 2).

  However, although these solvent-based inks are excellent in water resistance, paraffin-based inks have a drawback that they easily damage recording materials and protective films. In addition, the thinner ink has a problem that it has a strong odor, has a large influence on the environment, and is dangerous, and therefore requires a person with a specific qualification when handling it.

Therefore, glycol-based inks mainly composed of glycol ether and alkylene glycol have been developed. This ink is a newly developed solvent-based ink, which is excellent in water resistance and eliminates the above-mentioned drawbacks of conventional solvent-based inks. However, an inkjet recording material suitable for glycol ink has not been proposed yet.
JP-A-11-99742 (Claim 1) JP-A-11-165460 (Claim 1)

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a solvent-based ink, particularly an inkjet recording material that is preferably used for a glycol-based ink, and a method for producing the inkjet recording material. To do.

  Therefore, as a result of intensive studies to solve the above-mentioned problems, the present inventors have solved this problem.

  That is, the ink jet recording material of the present invention has an ink receiving layer, and the ink receiving layer contains a water-insoluble nitrocellulose resin.

  Preferably, the average nitrogen amount in the nitrocellulose resin is 10.5% or more.

  Preferably, the number average polymerization degree of the nitrocellulose resin is 55 or more.

  Preferably, the nitrocellulose resin is cross-linked and cured in the ink receiving layer.

  Preferably, the ink receiving layer contains an aliphatic dibasic acid ester compound.

  The method for producing an inkjet recording material of the present invention comprises forming an easy-adhesion layer containing a crosslinking agent on a support, and then containing a water-insoluble nitrocellulose resin on the easy-adhesion layer. An ink receiving layer is formed, and the water-insoluble nitrocellulose resin in the ink receiving layer is crosslinked and cured by a crosslinking agent in the easy adhesion layer.

  Preferably, in the above-described method for producing an ink jet recording material, by containing a catalyst in the ink receiving layer, cross-linking and curing of the water-insoluble nitrocellulose resin in the ink receiving layer and the cross-linking agent in the easy-adhesion layer is promoted. It is characterized by making it.

  In addition, the average nitrogen amount as used in the field of this invention averages the weight ratio (%) of the nitrogen atom in water-insoluble nitrocellulose resin.

  The ink-jet recording material of the present invention is excellent in ink drying property and anti-bleeding property for solvent-based inks, especially glycol-based inks, since the ink receiving layer contains a water-insoluble nitrocellulose resin.

  In addition, according to the method for producing an ink jet recording material of the present invention, an ink jet recording material that is excellent in ink drying property and anti-bleeding property for glycol-based inks and that prevents pigment cracking in the printed portion can be obtained with good workability. Can be manufactured.

  First, an embodiment of the ink jet recording material of the present invention will be described.

  The ink jet recording material of the present invention has an ink receiving layer, and the ink receiving layer contains a water-insoluble nitrocellulose resin.

  The ink receiving layer can be divided into those that can be handled by the ink receiving layer alone, such as those obtained by forming a resin constituting the ink receiving layer into a film, and those that are difficult to handle by the ink receiving layer alone. When it is difficult to handle the ink receiving layer alone, the ink receiving layer is formed on the support. The support is not particularly limited, but a plastic film made of a polyester resin, a polycarbonate resin, a polyvinyl chloride resin, a polyethylene resin, a polypropylene resin, a polystyrene resin, or the like, paper, fiber cloth, or the like can be used. . The thickness of the support is not particularly limited, but is preferably 5 μm or more in terms of conveyance.

  The ink receiving layer mainly contains a water-insoluble nitrocellulose resin. By using the water-insoluble nitrocellulose resin, it is possible to improve the ink drying property and bleeding prevention property for solvent-based inks, particularly glycol-based inks.

  The nitrocellulose resin can be obtained by esterifying a natural cellulose resin. The average amount of nitrogen in the water-insoluble nitrocellulose resin is not particularly limited, but the lower limit is 10.5% or more, preferably 11.5% or more, and the upper limit is 12.5% or less. By setting the lower limit to 10.5% or more, the nitrocellulose resin can be made water-insoluble, and solvent-based inks, particularly glycol-based inks, especially ink drying properties and bleeding prevention properties should be good. Can do. Further, by setting the lower limit to 11.5% or more, it is possible to further improve the ink drying property and bleeding prevention property, and by setting the upper limit to 12.5% or less, a crosslinking agent was used. At this time, the water-insoluble nitrocellulose resin can be sufficiently crosslinked and cured, and the pigment cracks in the printed portion can be almost eliminated.

  The content of the water-insoluble nitrocellulose resin in the ink receiving layer is not particularly limited, but the total solid content constituting the ink receiving layer is preferably used in order to exhibit the effects of ink drying and bleeding prevention. Is preferably contained in an amount of 40% by weight or more, more preferably 50% by weight or more.

  The number average polymerization degree of the water-insoluble nitrocellulose resin is not particularly limited, but is preferably 55 or more, more preferably 80 or more, and even more preferably 95 or more. By setting the number average polymerization degree to 55 or more, the ink drying property can be further improved. If the number average degree of polymerization becomes too high, the viscosity becomes high and the handleability deteriorates when it is made into a paint, so the upper limit of the number average degree of polymerization is preferably 300 or less, more preferably 150 or less.

  The water-insoluble nitrocellulose resin is preferably crosslinked and cured in the ink receiving layer. By crosslinking and curing, it is possible to prevent pigment cracks in the print area.

  A crosslinking agent is used to crosslink and cure the water-insoluble nitrocellulose resin. Examples of the crosslinking agent include isocyanate-based crosslinking agents, methylolated melamine-based crosslinking agents, and methylolated urea-based crosslinking agents. Among these, an isocyanate-based crosslinking agent that is easy to handle is preferably used.

  The crosslinking agent may be added to the coating solution for forming the ink receiving layer. However, when forming the ink receiving layer on the support, an easy-adhesion layer described later is provided between the support and the ink receiving layer. Since it is preferable, it is preferable to add in the coating liquid which forms an easily bonding layer. By adding the cross-linking agent to the coating liquid for forming the easy-adhesion layer instead of the ink receiving layer, it is possible to prevent the usable time of the coating liquid for forming the ink receiving layer from being shortened.

  The amount of the crosslinking agent used is slightly different depending on whether it is added to the ink-receiving layer or the easy-adhesion layer. In any case, the amount of the cross-linking agent is 100 parts by weight of the water-insoluble nitrocellulose in the ink-receiving layer. About 0.5 to 10 parts by weight.

  When the water-insoluble nitrocellulose in the ink receiving layer is crosslinked and cured by a crosslinking agent, it is preferable to promote crosslinking and curing using a catalyst. By using a catalyst, the coating film can be dried in a high-temperature atmosphere, or the crosslinking and curing can be accelerated without a long curing process after the coating film is formed. It is possible to prevent thermal deformation of the weak support.

  As the catalyst, a conventionally known catalyst can be used, and when the crosslinking agent is an isocyanate crosslinking agent, examples thereof include a zirconium catalyst, a titanium catalyst, a tin catalyst, and an amine catalyst.

  The catalyst is preferably added to a coating solution different from the coating solution containing a crosslinking agent. Specifically, when the crosslinking agent is contained in a coating solution that forms an easy-adhesion layer, the catalyst is preferably added to the coating solution that forms the ink receiving layer, and the crosslinking agent forms the ink receiving layer. In the case where it is contained in the coating solution, the catalyst is preferably added to the coating solution that forms the easy-adhesion layer. By doing in this way, it can prevent that the usable time of the coating liquid containing a crosslinking agent becomes short.

  The ink receiving layer preferably contains an aliphatic dibasic acid ester compound. When a water-insoluble nitrocellulose resin is contained in the ink receiving layer, the ink receiving layer tends to shrink easily. Therefore, when the configuration in which the ink receiving layer is provided on one surface of the support is employed, curling that has a concave shape occurs on the ink receiving layer side. Here, by containing an aliphatic dibasic acid ester compound in the ink receiving layer, the occurrence of curling can be prevented without deteriorating the ink drying property and the scratch resistance of the printed portion.

  Examples of the aliphatic dibasic acid ester compound include diisononyl adipate, isodecyl adipate, n-octyl adipate, di-2-ethylhexyl adipate, di-2-ethylhexyl azelate, di-2-ethylhexyl sebacate and the like. Among these, diisononyl adipate, which is difficult to change the color of the ink receiving layer with time and is excellent in compatibility with the water-insoluble nitrocellulose resin, is particularly preferably used.

  The content of the aliphatic dibasic acid ester compound in the ink receiving layer is not particularly limited, but is preferably 30 to 100 parts by weight with respect to 100 parts by weight of the water-insoluble nitrocellulose resin.

  A resin other than the water-insoluble nitrocellulose resin may be contained in the ink receiving layer. Such resins include polyvinyl butyral resin, polyester resin, (meth) acrylic ester copolymer resin, epoxy resin, vinylidene chloride resin, vinyl chloride-acrylic copolymer resin, vinyl chloride-vinyl acetate copolymer resin. Chlorinated polyolefin resin, urethane resin, alkyd resin, rubber resin and the like.

  The ink receiving layer may contain a pigment in order to improve ink absorbability or prevent blocking. In addition to inorganic pigments such as silica, clay, talc, calcium carbonate, calcium sulfate, barium sulfate, aluminum silicate, titanium oxide, synthetic zeolite, alumina, smectite, styrene resin, urethane resin, benzoguanamine resin, silicone resin, Organic pigments such as resin beads made of acrylic resin or the like, or hollow resin beads made from these are used, and these can be used alone or in combination of two or more. The addition amount of the pigment is usually about 5 to 200 parts by weight with respect to 100 parts by weight of the total resin of the ink receiving layer.

  In the ink receiving layer, additives such as a leveling agent, an ultraviolet absorber, an antioxidant, and a chelating agent may be added.

  The thickness of the ink receiving layer is preferably 5 to 70 μm when the ink receiving layer is provided on the support. When the thickness is 5 μm or more, ink absorbability can be improved, and when the thickness is 70 μm or less, curling can be prevented. When there is no support and the ink-receiving layer alone is handled, there is no problem of curling, and this is not restrictive.

  When the ink receiving layer is formed on the support, it is preferable to provide an easy adhesion layer between the support and the ink receiving layer in order to improve the adhesion between the support and the ink receiving layer.

  Since the binder resin constituting the easy-adhesion layer varies depending on the type of the support, it cannot be said unconditionally. For example, when the support is a polyvinyl chloride resin film, examples thereof include a polyester resin, an acrylic resin, and a polyurethane resin. When the support is a polyester resin film, examples thereof include a polyester resin and a polyurethane resin. The thickness of the easy adhesion layer is usually about 1 to 5 μm.

  As described above, it is preferable to add a crosslinking agent to the coating solution for forming the easy-adhesion layer to crosslink and cure the water-insoluble nitrocellulose resin in the ink receiving layer.

  As a method for forming the ink receiving layer and the easy-adhesion layer, a coating solution is prepared by dissolving or dispersing the components of each layer in an appropriate solvent, and the coating solution is roll coating, bar coating, spray coating, The method of apply | coating and drying on a support body by well-known methods, such as an air knife coating method, is mention | raise | lifted.

  In order to prevent the occurrence of curling, a back coat layer is provided on the surface of the support opposite to the ink receiving layer, or to prevent charging, the ink receiving layer is opposite to the ink receiving layer of the support or the support. It is possible to provide an antistatic layer on the side surface.

  Moreover, in order to improve ink drying property, you may have another ink receiving layer on the ink receiving layer mentioned above, or between the ink receiving layer mentioned above and a support body.

  Next, an embodiment of the method for producing an ink jet recording material of the present invention will be described.

  First, an easy-adhesion layer is formed by applying and drying an easy-adhesion layer coating solution containing a crosslinking agent on a support. The easy-adhesion layer coating solution is composed of a binder resin, a diluting solvent and the like in addition to the crosslinking agent. What was illustrated above can be used as a support body, a crosslinking agent, and binder resin. Examples of the application method include known methods such as a roll coating method, a bar coating method, a spray coating method, and an air knife coating method. The application is performed so that the thickness of the easy-adhesion layer after drying is 1 to 5 μm. Examples of the drying method include a heat drying method, and it is usually about 0.5 to 3 minutes at 80 to 120 ° C.

  Next, an ink-receiving layer coating solution containing a water-insoluble nitrocellulose resin is applied onto the easy-adhesion layer and dried to form an ink-receiving layer, and the water-insoluble nitrocellulose resin in the ink-receiving layer is formed. The resin is crosslinked and cured by a crosslinking agent in the easy-adhesion layer. The ink receiving layer coating liquid is composed of a water-insoluble nitrocellulose resin, a diluting solvent, a matting agent added as necessary, and the like. As the water-insoluble nitrocellulose resin and matting agent, those exemplified above can be used. Examples of the coating method include known methods such as a roll coating method, a bar coating method, a spray coating method, and an air knife coating method. The coating is performed so that the thickness of the easy-adhesion layer after drying is 15 to 25 μm. Examples of the drying method include a heat drying method, and it is usually about 3 to 5 minutes at 100 to 130 ° C.

  In addition, after forming the ink receiving layer, it is preferable to perform a curing treatment at 40 to 80 ° C. for about 1 to 48 hours in order to promote crosslinking and curing between the crosslinking agent and the water-insoluble nitrocellulose resin.

  Such a method for producing an ink jet recording material is obtained by adding a crosslinking agent to a coating solution for forming an easy-adhesion layer, not an ink receiving layer. It is possible to prevent the usable time from being shortened. In addition, the ink jet recording material obtained in this way is capable of preventing pigment cracking in the printed part by cross-linking and curing the water-insoluble nitrocellulose, and has an easy adhesion layer. Therefore, the adhesion between the support and the ink receiving layer is also excellent.

  Further, in the method for producing an ink jet recording material, by containing a catalyst in the ink receiving layer coating solution, cross-linking curing of the water-insoluble nitrocellulose resin in the ink receiving layer and the cross-linking agent in the easy-adhesion layer. Is preferably promoted. By using a catalyst, the coating film can be dried in a high-temperature atmosphere, or the crosslinking and curing can be promoted without the above-described long-time curing treatment, and it is weak against heat such as polyvinyl chloride resin. Thermal deformation of the support can be prevented. In addition, since the catalyst is contained in the ink receiving layer coating solution which is a coating solution different from the coating solution containing the crosslinking agent (easy adhesion layer coating solution), the usable time of the easy adhesion layer coating solution is shortened. Can be prevented.

  The following examples further illustrate the present invention. “Parts” and “%” are based on weight unless otherwise specified.

[Example 1]
On a polyvinyl chloride resin film (LAG mount P-246RW: Lintec Corporation) with a thickness of 80 μm, an easy-adhesion layer coating solution having the following composition was applied by a bar coating method so that the thickness after drying was 2 μm. An easy-adhesion layer was formed by drying at 100 ° C. for 1 minute.

  Next, an ink receiving layer coating liquid having the following composition is applied on the easy-adhesion layer by a bar coating method so that the thickness after drying is 20 μm, and dried at 120 ° C. for 3 minutes to form an ink receiving layer. Thus, an ink jet recording material was obtained.

<Easily adhesive layer coating solution>
・ Isocyanate-based crosslinking agent (solid content 75%) 5 parts (Takenate D110N: Mitsui Takeda Chemical Company)
・ 15 parts of polyester resin (Eritel UE3300: Unitika)
・ 80 parts of ethyl acetate

<Ink-receiving layer coating solution>
-10 parts of water-insoluble nitrocellulose resin of Example 1 (see Table 1)
-6.5 parts diisononyl adipate-0.017 parts zirconium catalyst (Orgatechs ZA-60: Matsumoto Pharmaceutical Co., Ltd.)
・ Methanol 83.5 parts

[Example 2]
An easy-adhesion layer was formed on a polyvinyl chloride resin film (LAG mount P-246RW: Lintec Co., Ltd.) having a thickness of 80 μm in the same manner as in Example 1, and then an ink receiving layer having the following composition was formed on the easy-adhesion layer. The layer coating solution was applied by a bar coating method so that the thickness after drying was 20 μm, and dried at 120 ° C. for 3 minutes to form an ink receiving layer, whereby an ink jet recording material was obtained.

<Ink-receiving layer coating solution>
-10 parts of water-insoluble nitrocellulose resin of Example 2 (see Table 1)
・ 6.5 parts of diisononyl adipate83.5 parts of methanol

[Examples 3 to 9]
On a transparent polyester film (Lumirror T60: Toray Industries, Inc.) having a thickness of 100 μm, an ink receiving layer coating solution having the following composition was applied by a bar coating method so that the thickness after drying was 20 μm, and the coating was performed at 120 ° C. for 3 minutes. The ink receiving layer was formed by drying to obtain an ink jet recording material.

<Ink-receiving layer coating solution>
20 parts of water-insoluble nitrocellulose resin of Examples 3 to 9 (see Table 1)
・ Isocyanate-based crosslinking agent (solid content 75%) 1 part (Takenate D110N: Mitsui Takeda Chemical Company)
・ Methyl ethyl ketone 79 parts

[Comparative Example 1]
On a transparent polyester film (Lumirror T60: Toray Industries, Inc.) having a thickness of 100 μm, an ink receiving layer coating solution having the following composition was applied by a bar coating method so that the thickness after drying was 20 μm, and the coating was performed at 120 ° C. for 3 minutes. The ink receiving layer was formed by drying to obtain an ink jet recording material.

<Ink-receiving layer coating solution>
・ 20 parts of polymethyl methacrylate resin (Paraloid A-11: Rohm and Haas)
・ Methyl ethyl ketone 80 parts

[Comparative Example 2]
On a transparent polyester film (Lumirror T60: Toray Industries, Inc.) having a thickness of 100 μm, an ink receiving layer coating solution having the following composition was applied by a bar coating method so that the thickness after drying was 20 μm, and the coating was performed at 120 ° C. for 3 minutes. The ink receiving layer was formed by drying to obtain an ink jet recording material.

<Ink-receiving layer coating solution>
・ 20 parts of ethylene-vinyl acetate copolymer resin (Smitate RB-11: Sumitomo Chemical Co., Ltd.)
・ Methyl ethyl ketone 80 parts

[Comparative Example 3]
On a transparent polyester film (Lumirror T60: Toray Industries, Inc.) having a thickness of 100 μm, an ink receiving layer coating solution having the following composition was applied by a bar coating method so that the thickness after drying was 20 μm, and the coating was performed at 120 ° C. for 3 minutes. The ink receiving layer was formed by drying to obtain an ink jet recording material.

<Ink-receiving layer coating solution>
・ Phenoxy resin 20 parts (Phenototo YP-50S: Tohto Kasei)
・ Methyl ethyl ketone 80 parts

[Comparative Example 4]
On a transparent polyester film (Lumirror T60: Toray Industries, Inc.) having a thickness of 100 μm, an ink receiving layer coating solution having the following composition was applied by a bar coating method so that the thickness after drying was 20 μm, and the coating was performed at 120 ° C. for 3 minutes. The ink receiving layer was formed by drying to obtain an ink jet recording material.

<Ink-receiving layer coating solution>
・ 20 parts of acrylonitrile butadiene rubber (Nipol1432J: Nippon Zeon)
・ Methyl ethyl ketone 80 parts

[Comparative Example 5]
On a transparent polyester film (Lumirror T60: Toray Industries, Inc.) having a thickness of 100 μm, an ink receiving layer coating solution having the following composition was applied by a bar coating method so that the thickness after drying was 20 μm, and the coating was performed at 120 ° C. for 3 minutes. The ink receiving layer was formed by drying to obtain an ink jet recording material.

<Ink-receiving layer coating solution>
・ Polyester resin 20 parts (ELITEL UE3300: Unitika)
・ Methyl ethyl ketone 80 parts

[Comparative Example 6]
On a transparent polyester film (Lumirror T60: Toray Industries, Inc.) having a thickness of 100 μm, an ink receiving layer coating solution having the following composition was applied by a bar coating method so that the thickness after drying was 20 μm, and the coating was performed at 120 ° C. for 3 minutes. The ink receiving layer was formed by drying to obtain an ink jet recording material.

<Ink-receiving layer coating solution>
・ Epoxy resin 20 parts (Epicoat 1010: Yuka Shell Epoxy)
・ Methyl ethyl ketone 80 parts

  The ink jet recording materials obtained in Examples 1 to 9 and Comparative Examples 1 to 6 were cured (heated at 60 ° C. for 24 hours for Example 1, 60 for Examples 2 to 9 and Comparative Examples 1 to 6). After heating for 48 hours at 0 ° C., recording was performed with an inkjet printer (SOLJET: Roland) using glycol-based ink, and the following items were evaluated. The results are shown in Table 2.

(1) Ink drying property The paper was stacked on the ink receiving layer side of the ink jet recording material after recording after a predetermined time, and the time until the ink was not transferred to the paper was measured. The unit is “minute”. “0” indicates that the ink is not transferred to the paper even immediately after printing, and “30 or more” indicates that the ink is transferred to the paper even after 30 minutes.

(2) Bleeding prevention Bleeding of the printed portion of the inkjet recording material after recording was visually observed. As a result, “◎” indicates that there is no blur, “◯” indicates that the blur is not noticeable, “Δ” indicates that the blur is slightly blurred, and “x” indicates that the blur does not become an image.

(3) Pigment cracking Pigment cracking in the printed portion of the inkjet recording material after recording was visually observed. As a result, “AAA” indicates that the ink amount is 300% and the pigment is not cracked, “AAA” indicates that the pigment amount is 240%, and “A” indicates that the pigment amount is 230%. "B" for pigment cracking when the ink amount is 200%, "C" for pigment cracking when the ink amount is 180%, and "D" for pigment cracking when the ink amount is less than 180% It was.

  As is apparent from the results in Table 2, since the ink jet recording materials of Examples 1 to 9 contain a water-insoluble nitrocellulose resin in the ink receiving layer, all of them are ink drying properties, bleeding. It was excellent in prevention. In particular, the inks of Examples 1 to 3 were excellent in terms of ink dryness without ink being transferred to paper even immediately after printing, and the results of bleeding prevention and pigment cracking were also extremely good. .

  Moreover, as a result of comparing Examples 4 to 6 and Examples 7 to 9, when the number average polymerization degree of the water-insoluble nitrocellulose resin is equivalent, the average nitrogen amount is 11.5% or more. It was found that Examples 4 to 6 were superior in ink drying property. Furthermore, from the results of Examples 1 to 6 and Examples 7 to 9, when the average nitrogen amount of the water-insoluble nitrocellulose resin is the same, the higher the number average degree of polymerization, the better the ink drying property It was found that pigment cracking is difficult to occur.

  Although not described in the table, since the ink-jet recording materials of Examples 1 and 2 contain diisononyl adipate in the ink receiving layer, the curling without impairing various performances such as ink drying properties. Can be prevented.

  In addition, since the inkjet recording material production methods of Examples 1 and 2 are those in which a cross-linking agent is contained in an easily adhesive layer, a coating liquid containing a water-insoluble nitrocellulose resin (ink receiving layer coating) It was possible to prevent the usable time of the liquid) from being shortened, and the workability was excellent. In particular, since the production method of Example 1 uses a catalyst containing a catalyst in the ink-receiving layer coating solution, it can promote cross-linking and hardening of water-insoluble nitrocellulose. Despite the shorter curing time, pigment cracking did not occur as in Example 2.

  On the other hand, all of the inkjet recording materials of Comparative Examples 1 to 6 contain a water-insoluble resin in the ink receiving layer, but the ink drying property and the anti-bleeding property are not sufficient. The recording characteristics were inferior.

Claims (7)

  An ink jet recording material having an ink receiving layer, wherein the ink receiving layer contains a water-insoluble nitrocellulose resin.   2. The ink jet recording material according to claim 1, wherein an average nitrogen amount of the nitrocellulose resin is 10.5% or more.   The inkjet recording material according to claim 1 or 2, wherein the nitrocellulose resin has a number average polymerization degree of 55 or more.   The inkjet recording material according to any one of claims 1 to 3, wherein the nitrocellulose resin is crosslinked and cured in an ink receiving layer.   5. The ink jet recording material according to claim 1, wherein the ink receiving layer contains an aliphatic dibasic acid ester compound.   After forming an easy-adhesion layer on the support with an easy-adhesion layer coating solution containing a crosslinking agent, an ink is applied on the easy-adhesion layer with an ink-receiving layer coating solution containing a water-insoluble nitrocellulose resin. A method for producing an ink jet recording material, comprising: forming a receiving layer, and crosslinking and curing the water-insoluble nitrocellulose resin in the ink receiving layer with a crosslinking agent in the easily adhesive layer.   7. The method for producing an ink jet recording material according to claim 6, wherein a catalyst is contained in the ink receiving layer coating solution to crosslink the water-insoluble nitrocellulose resin in the ink receiving layer and the crosslinking agent in the easy adhesion layer. A method for producing an inkjet recording material, characterized by promoting curing.