WO2006080363A1 - Ink jet recording material and process for producing ink jet recording material - Google Patents

Abstract

This invention provides an ink jet recording material comprising a support, an ink receptive layer provided on the support, and a gloss layer which is provided on the ink receptive layer, contains a fine pigment and has gloss imparted by pressure contact with a planishing roll. In the ink jet recording material, the gloss layer contains at least one compound represented by general formulae (1) to (3): [Chemical formula 1] (1) wherein R1 and R2 represent an alkyl or alkenyl group having 8 to 28 carbon atoms; and R3 and R4 represent H or an alkyl group having 1 to 4 carbon atoms; and X- represents F-, Cl-, Br-, or I-; [Chemical formula 2] (2) wherein R5, R6 and R7 represent an alkyl or alkenyl group having 8 to 28 carbon atoms; R8 represents H or an alkyl group having 1 to 4 carbon atoms; and X- represents F-, Cl-, Br-, or I-; [Chemical formula 3] (3) wherein R9, R10, R11, and R12 represent an alkyl or alkenyl group having 8 to 28 carbon atoms; and X- represents F-, Cl-, Br-, or I-.

Description

 TECHNICAL FIELD The present invention relates to an ink jet recording body and an ink jet recording body manufacturing method.

 The present invention relates to an ink jet recording material, particularly an ink jet recording material having high glossiness, high smoothness, good ink absorbability, and extremely easy to produce, and a method for producing the same.

 This application claims priority based on Japanese Patent Application 2005-019107 filed on January 27, 2005 and Japanese Patent Application 2005-021166 filed on January 28, 2005, the contents of which are hereby incorporated by reference herein. Incorporate.

 Background art

 [0002] An ink jet recording method in which an aqueous ink is ejected from a fine nozzle to form an image on a recording body has low noise during recording, easy colorization, and high-speed recording. In addition, it is widely used in terminal printers, facsimile machines, plotters, form printing, and the like because it is less expensive than other printing devices.

 In recent years, due to the rapid spread of printers, high-definition speed, and the advent of digital cameras, advanced characteristics have also been demanded for recording media used in inkjet recording systems.

 In other words, it is possible to realize an ink jet recording body having fast ink absorption, high recording density, excellent water resistance and storage characteristics, particularly image quality, surface gloss and storage stability comparable to silver salt photography. There is a strong demand.

In general, as a method for imparting gloss to an ink jet recording material, a method such as super calender is used to smooth the surface of a coating layer by passing paper between rolls under pressure or temperature (calendar) (Finishing) is known.

 However, the ink jet recording material obtained by calendar finishing has insufficient glossiness and voids in the coating layer are reduced, resulting in a decrease in ink absorbency, and as a result, print bleeding is likely to occur. Then, we have a problem.

[0004] Further, in order to improve the glossiness, a smooth plastic film having gloss or Is an inkjet in which an ink-receptive layer made of an ink-absorbing resin such as starch, gelatin, water-soluble cellulose resin, polybulal alcohol, polybulurpyrrolidone, and modified polyurethane is provided on the surface of a resin-coated paper (for example, polyethylene laminated paper). Many records have been proposed.

 However, although such an ink jet recording body can obtain a certain degree of glossiness, the ink absorbability is insufficient and the ink drying is slow. There is a problem that the property and curl are also inferior.

 [0005] In view of this, there has been proposed an ink jet recording body in which an ink receiving layer mainly composed of a fine pigment such as colloidal silica is provided on a smooth support such as a resin-coated paper (for example, Patent Document 1). 2).

 Patent Document 1 discloses an inkjet recording having at least a layer containing vapor-phase method silica having an average primary particle size of 50 nm or less and a layer containing colloidal silica on the resin-coated paper from the side closer to the resin-coated paper. Sheets have been proposed. However, although the glossiness and scratch resistance are improved, the primary particles such as colloidal silica have a low porosity, so that the ink absorbability tends to decrease. If the coating amount is reduced in order to provide ink absorbability, interference fringes are generated and the quality of the glossy surface is lowered, or sufficient glossiness cannot be obtained. In Patent Document 2, a layer containing vapor phase silica having an average primary particle diameter of 30 nm or less and a layer containing cationic colloidal particles on the resin-coated paper from the side close to the resin-coated paper. An ink jet recording sheet having at least the above has been proposed. Although the use of cationic colloid particles improves bleeding and water resistance of the image after printing with the passage of time, there is a problem in that the ink absorbability decreases as in Patent Document 2.

[0006] On the other hand, as another method for imparting gloss, a so-called cast coating method is known, which is obtained by pressing a wet coating layer onto a heated mirror roll and drying it to copy the mirror surface. (For example, see Patent Documents 3 and 4.) ₀

 [0007] As a cast coating method,

(1) Wet cast that is coated with a pigment composition mainly composed of pigment and adhesive on the base paper, and then is gloss-finished by being pressed against a heated mirror roll and dried while the coating layer is in a wet state. Law, (2) Gelled cast method in which the wet coating layer is made into a gel state by acid, salt or heat, and this is pressed against a heated mirror roll and dried to give a gloss finish.

 (3) Once the wet coating layer is dried, it is wet-plasticized with a re-wetting solution, and this is pressed against a heated mirror roll and dried to give a gloss finish. Generally known.

 [0008] Although these cast coating methods are recognized by those skilled in the art as separate technologies, the surface of the coating layer in a wet plastic state is pressed against a mirror roll and dried. However, the mirror roll force is also released to share the mirror surface.

 Cast coated paper obtained by such a cast coating method has a high surface gloss and excellent surface smoothness compared to ordinary calendered recording materials, and provides an excellent printing effect. Used exclusively for high-quality printed materials.

[0009] However, inkjet recording media using these cast coating methods use fine pigments such as silica and alumina in order to increase ink absorbency. It tends to be inferior in continuous operability. Furthermore, in the cast coating method, the wet paint is brought into contact with the mirror roll and dried, so the moisture in the paint must be vaporized and escape to the back of the support. High, it is necessary to use a support. When used on a support such as paper, it is known that a defect called so-called cockling, in which the recording medium stretches and undulates due to the influence of a solvent such as water contained in the ink, is observed. Cockling not only detracts from the appearance of the printed matter, but also causes the recording head to come into contact with the recording head and contaminate the recording body. There is a case.

Patent Document 1: Patent Document 1: As an inkjet recording medium having a high gloss obtained by a cast coating method using a low air-permeable support such as a resin-coated paper in order to suppress cockling

There are 5 suggestions.

Patent Document 5 discloses an ink jet in which an ink receiving layer having a pigment and an adhesive is formed on a low-permeable or non-permeable substrate, and then a glossy layer having a fine pigment and a release agent is formed. A step of providing a glossy layer coating liquid layer having a fine pigment in the recording medium, the coating liquid; A glossy layer is formed by a glossing means including a step of pressing a layer with a press roll so as to be in contact with a mirror surface roll, and a step of drying the coating liquid layer, thereby providing a high gloss ink jet recording medium. .

 However, in this manufacturing method, it is necessary to peel off the coating layer from the mirror roll when the coating layer is undried. Therefore, during continuous operation, it remains stuck on the mirror roll and may not be released. In addition, there is a problem that the production efficiency deteriorates, such as the inkjet recording body sticking to the mirror roll and the mirror roll becomes dirty.

 [0011] Patent Document 1: Japanese Patent Laid-Open No. 2000-37944 (Pages 2, 5 and 6)

 Patent Document 2: JP 2001-353957 A (Pages 2, 13 and 14)

 Patent Document 3: Japanese Patent Laid-Open No. 2-274587 (Pages 1, 5 and 6)

 Patent Document 4: JP-A-7-89220 (Pages 2, 7-10)

 Patent Document 5: International Publication Number WO03Z039881

 Disclosure of the invention

 Problems to be solved by the invention

 [0012] The present invention relates to an inkjet recording material having good releasability during operation of a glossy inkjet recording material produced using a mirror surface roll, and a mirror surface roll even when the coating liquid is in a wet or semi-dry state It is an object to provide a method for producing an ink jet recording material that can form a gloss layer with high glossiness immediately after being released from force, and is less likely to cause coating defects even after long-term operation. And

 Means for solving the problem

[0013] As a result of intensive studies, the present inventors have found that when a specific compound is blended, the releasability is excellent in that it does not easily cause a mirror roll stain that impairs glossiness, ink absorbability, and recordability. I found.

 Furthermore, as a result of investigating the cause of the generation of debris, the present inventors have found that debris is generated by the reaction of the wiping agent used for wiping the surface of the mirror roll and the release agent in the coating liquid. Presumed to be. Then, when the same type of wiping agent and release agent were used, it was found that the generation of debris could be suppressed.

[0014] That is, the present invention includes the following embodiments. (1) First embodiment

 (1) In an ink jet recording medium having an ink receiving layer on a support, and having a gloss layer containing a fine pigment on the ink receiving layer and imparting gloss by pressure contact with a mirror surface roll

The glossy layer contains at least one compound represented by the following general formula (1) to general formula (3).

[0015] [Chemical 1]

(Wherein R ¹ and R ² are alkyl or alkenyl groups having 8 to 28 carbon atoms, R ³ and R are H or alkyl groups having 1 to 4 carbon atoms, Xl¾F_, Cl ^_ , Br-, or 厂) [Chemical 2]

(Wherein, R ^5, R ⁶ and R 'an alkyl group or Aruke of 8 to 28 carbon atoms - le group, R ⁸ is H or an alkyl group having 1 to 4 carbon atoms, Xl¾F_, Cl ^_, Br-, or厂 Indicates 厂

[0017] [Chemical 3]

(In the formula, R ⁹ , R ¹⁰ , ¹ and R ¹² each represent an alkyl group or a alkenyl group having 8 to 28 carbon atoms, F 1, Cl_, Br—, or I—.)

[0018] (1 2) Compound power represented by general formula (1) to general formula (3) contained in the gloss layer: Dicocoyl dimethylammo-um chloride, didecyl dimethyl ammo-muchloride, dilauryl dimethyl ammo-muchloride, distearyl Dimethylammonium chloride, diaryldimethylammonium chloride is preferably at least one kind selected.

(1 3) Fine pigment strength of the gloss layer Average primary particle size 3 to: Colloidal silica of LOOnm, average primary particle size 3 to: Alumina of LOOnm, and average primary particle size 3 to: L00 nm, powerful average secondary particles It is preferably at least one selected from amorphous silica having a diameter of 1 m or less.

 (1-4) The support is preferably a film or a resin-coated paper.

 (15) It is preferable that the ink receiving layer contains a pigment having a maximum value in the pore diameter distribution curve of only lOOnm or less and an average secondary particle size of 1.3 m or less as a main component. .

 [0019] (2) Second embodiment

(2-1) A step of forming at least one ink receiving layer having a pigment and an adhesive on the support, and a fine pigment and the following general formulas (1) to (3) on the ink receiving layer: In the coating step of providing a coating liquid layer for a glossy layer containing at least one compound represented by (2) as a release agent, the coating liquid layer for the glossy layer is pressed with a press roll so as to be in contact with the mirror roll. And a gloss layer forming step including a drying step of drying the coating liquid layer. This is a method for producing an ink jet recording material.

 [0020] [Chemical 4]

(Wherein R ¹ and R ² are alkyl or alkenyl groups having 8 to 28 carbon atoms, R ³ and R are H or alkyl groups having 1 to 4 carbon atoms, Xl¾F_, Cl ^_ , Br-, or 厂) [Chemical 5]

(Wherein, R ^5, R ⁶ and R 'an alkyl group or Aruke of 8 to 28 carbon atoms - le group, R ⁸ is H or an alkyl group having 1 to 4 carbon atoms, Xl¾F_, Cl ^_, Br-, or厂 Indicates 厂

[0022] [Chemical 6]

(In the formula, R ⁹ , R ^1G , ¹ and R ¹² each represent an alkyl group or a alkenyl group having 8 to 28 carbon atoms, ΧΊ F1, Cl ^_ , Br-, or 厂.)

[0023] (2-2) —The release agents represented by the general formulas (1) to (3) are dicocoyl dimethyl ammonium chloride, didecyl dimethyl ammonium chloride, dilauryl dimethyl ammonium. It is preferably at least one selected from muchloride, distearyldimethylammonium chloride, and dioleyldimethylammonium chloride.

 (2-3) Fine pigment strength of gloss layer Colloidal silica with average primary particle size of 3 to 100 nm, average uniform particle size of 3 to: Alumina of LOOnm, and average primary particle size of 3 to: L00 nm and average secondary particles It is preferable to contain at least one selected from amorphous silica having a diameter of 1 m or less.

 (2-4) The support is preferably a film or a resin-coated paper.

 (2-5) The ink receiving layer preferably contains a pigment having a maximum value in the pore diameter distribution curve of only lOOnm or less and an average secondary particle size of 1.3 m or less as a main component. Yes.

 [0024] (3) Third Embodiment

 (3-1) A coating solution for a mirror finishing layer containing at least one of the compounds represented by the following general formulas (1) to (3) as a release agent.

[0025] [Chemical 7]

(Wherein R ¹ and R ² are alkyl or alkenyl groups having 8 to 28 carbon atoms, R ³ and R ′ are H or alkyl groups having 1 to 4 carbon atoms, X— is F—, Cl_, Br -Or I-)) [0026] [Chemical 8]

(Wherein, R ^5, R ⁶ and R 'an alkyl group or Aruke of 8 to 28 carbon atoms - le group, R ⁸ is H or an alkyl group having 1 to 4 carbon atoms, Xl¾F_, Cl ^_, Br-, or厂 Indicates 厂

[0027] [Chemical 9]

(In the formula, R ⁹ , R ¹⁰ , ¹ and R ¹² each represent an alkyl group or a alkenyl group having 8 to 28 carbon atoms, F 1, Cl_, Br—, or I—.)

 (3-2) —The release agent represented by the general formula (1) to the general formula (3) is dicocoyl dimethyl ammonium chloride, didecyl dimethyl ammonium chloride, dilauryl dimethyl ammonium chloride, It is preferably at least one selected from stearyl dimethyl ammonium chloride and dioleyl dimethyl ammonium chloride.

 (3-3) The coating liquid for the mirror finish layer is preferably a coating liquid that is pressed against the mirror roll.

 [0028] (4) Fourth Embodiment

(41) A step of forming at least one layer of an ink receiving layer on the support, a coating step of providing a coating liquid layer for a glossy layer containing a fine pigment and a release agent on the ink receiving layer, and , Before the gloss layer forming step, the surface of the mirror surface roll is wiped with a wiping agent prior to the gloss layer forming step having a pressing step in which the coating liquid layer for the gloss layer is pressed with a press roll so as to be in contact with the mirror surface roll. And the wiping agent is a compound represented by any one of the following general formulas (1) to (4), and the release agent in the coating solution is represented by the following general formula: (1) to (3) are compounds represented by misalignment (however, the wiping agent and the release agent do not have to be the same compound). It is a manufacturing method.

[0029] [Chemical 10]

(Wherein R ¹ and R ² are alkyl or alkenyl groups having 8 to 28 carbon atoms, R ³ and R are H or alkyl groups having 1 to 4 carbon atoms, Xl¾F_, Cl ^_ , Br-, or 厂) [Chemical 11]

(Wherein, R ^5, R ⁶ and R 'an alkyl group or Aruke of 8 to 28 carbon atoms - le group, R ⁸ is H or an alkyl group having 1 to 4 carbon atoms, Xl¾F_, Cl ^_, Br-, or厂 Indicates 厂

[0031] [Chemical 12]

(In the formula, R ⁹ , R ^1G , ¹ and R ¹² each represent an alkyl group or a alkenyl group having 8 to 28 carbon atoms, ΧΊ F1, Cl ^_ , Br-, or 厂.)

[0032] [Chemical 13]

(In the formula, R ^ld represents an alkyl group or alkyl group having 8 to 28 carbon atoms, R ¹⁴ , R 1, R ^lb represents H or an alkyl group having 1 to 4 carbon atoms, and each may be the same.異 な っ o or 異 な っ or F_, C 厂, Br ", or).)

[0033] (42) In the pressing step, it is preferable that the glossy layer is also peeled off with a mirror roll force while the glossy layer is in a wet or semi-dry state.

 (4 3) It is preferable that the support is a non-permeable support or a low-permeable support! /.

 (4-4) It is preferable that the release agent and the wiping agent are the same compound.

 The invention's effect

[0034] Since the ink jet recording material of the present invention is stably released from the mirror roll during production, the surface thereof has a surface gloss as high as that of a silver salt photograph, and has high dot reproducibility. It has excellent ink absorption and high recording density. Nikki! / Has excellent ink jet recording ability. According to the method for producing an inkjet recording body of the present invention, a non-permeable support or a low-permeable support is used as a support as soon as it is released from a mirror roll even when the coating liquid is in a wet or semi-dry state. In addition, it is possible to form a gloss layer having a gloss level as high as that of a silver salt photograph. Moreover, even if the operation is continued for a long time, it is difficult to generate debris, which can be prevented from sticking to the mirror roll

. As a result, it is possible to prevent debris from being mixed in the glossy layer of the ink jet recording material. Also, coating defects are unlikely to occur in the Mitsuzawa layer!

 Brief Description of Drawings

 FIG. 1 is a diagram showing an example of a manufacturing process in a preferred embodiment of an ink jet recording material of the present invention.

 Explanation of symbols

[0036] 1: Inkjet recording material

 2: Support

 3: Ink receiving layer

 4: Coating solution

 5: Mirror roll

 6: press ronole

 7: Coating liquid layer

 8: Glossy layer

 9: Hair dryer

 10: Base material

 BEST MODE FOR CARRYING OUT THE INVENTION

[0037] The ink jet recording material of the first embodiment of the present invention is represented by the general formula (1) to the general formula (3) on the gloss layer formed on the ink receiving layer and given gloss by a mirror roll. Contains at least one compound to be processed.

In the method for producing an ink jet recording material according to the second embodiment of the present invention, a fine pigment and at least one of the compounds represented by the general formulas (1) to (3) are released on the ink receiving layer. A coating step for providing a coating layer for the glossy layer contained as a coating layer and the coating layer for the glossy layer A pressing step of pressing with a press roll so as to be in contact with the tool.

 The mirror surface finish layer coating liquid of the third embodiment of the present invention contains at least one compound represented by the general formulas (1) to (3) as a release agent.

 The method for producing an inkjet recording body according to the fourth embodiment of the present invention is the same as the method for producing an inkjet recording body according to the second embodiment of the present invention. (1) to (4), further including a wiping step of wiping with a wiping agent containing a compound represented by a deviation.

[0038] (Compounds represented by general formula (1) to general formula (4))

 First, the compounds represented by the general formulas (1) to (4) used in the present invention will be described.

[0039] [Chemical 14]

In the general formula (1), RR ² represents an alkyl group or alkenyl group having 8 to 28 carbon atoms, and examples thereof include an oleyl group, a stearyl group, a decyl group, a lauryl group, a palmityl group, and a myristyl group.

R ² may be the same or different. R ³ and R ⁴ represent H or an alkyl group having 1 to 4 carbon atoms (that is, a methyl group, an ethyl group, a propyl group, or a butyl group), and among them, a methyl group is preferable. R ³ and R ⁴ may be the same or different. X ¾F_, Cl_, Br-, or I- is also shown.

[0040] [Chemical 15]

In the general formula (2), R ⁵ , R ⁶ and R ⁷ represent an alkyl group or a alkenyl group having 8 to 28 carbon atoms, and examples thereof include an oleyl group, a stearyl group, a decyl group, a lauryl group, a palmityl group, Examples include myristyl groups. R ⁵ , R ⁶ and R ⁷ may be the same or different. R ⁸ represents H or an alkyl group having 1 to 4 carbon atoms (that is, a methyl group, an ethyl group, a propyl group, or a butyl group), and among them, a methyl group is preferable. X ¾F_, Cl_, Br ", or I-.

[0041] [Chemical 16]

In the general formula (3), R ⁹ , R ¹⁰ , R "and R ¹² represent an alkyl group or a alkenyl group having 8 to 28 carbon atoms, such as oleyl group, stearyl group, decyl group, lauryl group, palmityl R ⁹ , R ^1G , R ¹¹ R ¹² may be the same or different, and X_ «F_, Cl_, Br", or I- Show.

[0042] [Chemical 17]

In the general formula (4), R ^ld represents an alkyl group or alkenyl group having 8 to 28 carbon atoms, and examples thereof include an oleyl group, a stearyl group, a lauryl group, a palmityl group, and a myristyl group. Among these, an oleyl group and a stearyl group are preferable because releasability is maintained for a long time. R ¹⁴ , R ¹⁵ , and R ¹⁶ represent H or an alkyl group having 1 to 4 carbon atoms (that is, a methyl group, an ethyl group, a propyl group, or a butyl group), and among them, a methyl group is preferable. R ^{14 to} R ¹⁶ may be the same or different from each other. In addition, it represents any one of cocoon F-, Cl_, Br-, and I-, and among these, C1- is preferable.

Specific examples of the compound represented by the general formula (1) include, for example, dioleyl ammonium chloride, dioleyl dimethyl ammonium chloride, dioleyl jetyl ammonium chloride, dioleyl dibutyl ammonium- Um chloride, dioleyl dimethyl ammo-um bromide, geol dimethyl ammo-um fluoride, geol dimethyl ammo-um iodide, geolyl monomethyl ammo-um chloride, distearyl ammo-um chloride, distearyl dimethyl ammo-um chloride, di Stearyl Jetyl Ammonium Chloride, Distearyl Dibutyl Ammonium Chloride, Distearyl Dimethyl Ammonium Bromide, Distearyl Dimethyl Ammonium Fluoride, Distearyl Dimethyl Ammonium Iodide, distearyl monomethylammonium chloride, dilaurinolemonium chloride, dilaurinoresimethinolenium chloride, dilauryljetyl ammonium chloride, dilauryldibutylammonium chloride, dilauryldimethylammonium -Umbromide, dilauryl dimethyl ammonium-um fluoride, dilauryl dimethyl ammonium-um iodide, dilauryl monomethyl ammonium-um chloride, dipalmityl ammonium chloride, dipalmityl dimethyl ammonium-um chloride , Dipalmityl Dimethyl Ammonium Chloride, Dipalmityl Dibutyl Ammonium Chloride, Dipalmityl Dimethyl Ammonium Umbromide, Dipalmityl Dimethyl Ammonium Fluoride, Dipalmityl Dimethyl Ammonium-Dimumityl Dimethyl Ammo- Um chloride, dimyristyl ammo-um chloride, dimyristyl dimethyl ammo-um chloride, dimyristyl jetyl ammo chloride, dimyristyl dibutyl am-mu chloride, dimyristyl dimethyl ammo-mu bromide, dimyristyl dimethyl ammo-mu fluoride, dimyristyl dimethyl ammo , Dimyristyl monomethyl ammonium chloride, didecyl ammonium chloride, didecyldimethyl Ammonium chloride, didecyl jetyl ammonium chloride, didecyl dibutyl ammonium chloride, didecyldimethyl ammonium fluoride, didecyldimethyl ammonium fluoride, didecyldimethyl ammonium fluoride, didecyl monomethyl ammonium chloride, dicocoyl Ammonium chloride, dicocoyl dimethyl ammonium chloride, dicocoyl jetyl ammonium chloride, dicocoyl dibutyl ammonium chloride, dicocoyl dimethyl ammonium bromide, dicocoyl dimethyl ammonium fluoride, dicocoyl dimethyl ammonium fluoride Examples include cocoyl monomethyl ammonium chloride.

Specific examples of the compound represented by the general formula (2) include, for example, trioleyl ammonium chloride, trioleyl monomethyl ammonium chloride, trioleyl monoethyl ammonium chloride, trioleyl monobutyl ammonium chloride, Trioleyl monomethylammonium bromide, trioleylmonomethylammonium fluoride, trioleylmonomethylammonium iodide, tristearylammonium chloride, tristearylmonomethylammonium chloride, tristearylmonoethylammonium chloride-umchlora Id, tristearyl monobutylammonium chloride, tristearyl monomethylammonium bromide, tristearyl monomethylammonium fluoride, tristearyl mono Tylammoum iodide, trilauryl ammonium chloride, trilauryl monomethyl ammonium chloride, trilauryl monoethyl ammonium chloride, trilauryl monomethyl ammonium chloride, trilauryl monomethyl ammonium bromide, trilauryl monomethyl ammonium fluoride, trilauryl monochloride Monomethyl ammo Odaidide, tripalmityl ammonium chloride, tripalmityl monomethyl ammonium chloride, tripalmityl monoethyl ammonium chloride, tripalmityl monobutyl ammonium chloride, tripalmityl monomethyl ammonium chloride, trinoremityl monomethyl Ammo-fluoride, tripalmityl monomethyl ammoide, trimyristyl ammo-um chloride, trimyristyl monomethyl ammo-um chloride, trimyristyl monoethyl ammo-um chloride, trimyristyl monobutyl ammo chloride, trimyristyl monomethyl ammo- Humbromide, trimyristyl monomethyl ammofluoride, trimyristyl monomethyl ammo-iodide, Desi Ruanmo - Umukuroraido, tridecyl monomethyl ammonium - Umukuroraido, Torideshirumono Echiruanmo - Umukuroraido, tridecyl mono-heptyl ammonium - Umukuroraido, tridecyl monomethyl ammonium - Umuburomaido, tridecyl monomethyl ammonium - Umufuruoraido, tridecyl monomethyl ammonium - Umuaiodaido the like.

In addition, specific examples of the compound represented by the general formula (3) include, for example, tetraoleum ammo-um chloride, tetraoleam ammobromide, tetraoleam ammofluoride, tetraoley. Ruam-moum iodide, Tetrastearyl ammonium chloride, Tetrastearyl ammonium bromide, Tetrastearyl ammonium fluoride, Tetrastearyl ammonium iodide, Tetralauryl ammonium chloride, Tetralauryl ammonium fluoride, Tetralauryl ammonium fluoride Urylammoum iodide, Tetrapalmitylammochloride, Tetrapalmithylummoumumumide, Tetrapalmitylammofluoride, Tetrapalmithyluman -Muum iodide, Tetramyristyl ammo-um chloride, Tetra myristyl Ru ammo -Um bromide, Tetra myristyl ammo -Um fluoride, Tetra myristyl ammo-um iodide, Tetradecyl ammo For example, muaiodide.

Specific examples of the compound represented by the general formula (4) include stearyl ammonium chloride, stearyl trimethyl ammonium chloride, stearyl triethyl ammonium chloride, stearyl tributyl ammonium chloride, stearyl trimethyl bromide, stearyl Ril trimethyl fluoride, stearyl trimethyl iodide, stearyl monomethyl ammonium chloride, stearyl dimethyl ammonium chloride, oleyl ammonium chloride, oleyl trimethyl ammonium chloride, oleyl triethyl ammonium chloride, oleyl triptylammonium Chloride, oleyl trimethyl bromide, oleyl trimethyl fluoride, oleyl trimethyl iodide, oleyl monomethyl ammonium chloride, oleyl dimethyl ammonium

Muchloride, lauryl ammonium chloride, lauryl trimethyl ammonium chloride, lauryl triethyl ammonium chloride, lauryl tributyl ammonium chloride, lauryl trimethyl bromide, lauryl trimethyl fluoride, lauryl trimethyl iodide, lauryl monomethyl ammonium chloride , Lauryldimethylammonium chloride, palmityl ammonium chloride, palmityltrimethylammonium chloride, palmityltriethylammonium chloride, palmityltributylammonium chloride, palmityltrimethylbromide, palmityltrimethylfluoride, palmityltrimethyl iodide , Palmityl Monomethyl Ammonium chloride, Palmitic Dimethyl ammonium chloride, myristyl ammonium chloride, myristyl trimethyl ammonium chloride, myristyl triethyl ammonium chloride, myristyl tributyl ammonium chloride, myristyl trimethyl bromide, myristyl trimethyl fluoride, myristyl trimethyl iodide, myristyl chloride And myristyl dimethyl ammonium chloride.

 The compounds represented by the general formulas (1) to (3) are particularly excellent in releasability from a mirror roll and do not inhibit ink absorbability, and therefore can be blended as excellent release agents.

 Among these compounds, the compound represented by the general formula (1) is preferable because it is particularly excellent in releasability.

Also, use at least one selected from dicocoyl dimethyl ammonium chloride, didecyl dimethyl ammonium chloride, dilauryl dimethyl ammonium chloride, distearyl dimethyl ammonium chloride, dioleyl dimethyl ammonium chloride V, It is preferable because the ink absorbability and releasability are particularly excellent. [0048] The compound represented by any one of the general formulas (1) to (4) is difficult to form a substance that easily reacts with the mold release agent, and therefore, it can be used as an excellent wiping agent. it can. The release agent and the wiping agent do not necessarily have to be the same compound, but it is preferable that the release agent and the wiping agent are the same compound because the generation of waste can be further suppressed.

 [0049] In the first embodiment, a compound of general formula (1) to general formula (3) (hereinafter also referred to as a specific compound) is contained in a gloss layer imparted with gloss by being pressed against a mirror roll. Inkjet recording material. The specific compound may be applied to the surface of the mirror surface roll which may be mixed in the coating liquid for the gloss layer. In addition, when the coating amount of the glossy layer is small, it may be added to the ink receiving layer coating solution. The application method of a specific compound is not particularly limited as long as it exhibits a function of enhancing the releasability when it is peeled off after being pressed against a mirror surface roll.

 [0050] A second embodiment is a method for producing an ink jet recording material, in which a specific compound is contained as a releasing agent in a gloss layer coating liquid. Note that this does not preclude the application of a specific compound to the mirror roll or ink receiving layer.

 [0051] A third embodiment is a mirror-finishing layer coating solution containing at least one specific compound as a release agent. Such a coating solution is a coating solution that can be smoothly released when pressed against a mirror roll. For example, it is useful as a coating solution used for a coating layer formed by a cast coating method.

 [0052] According to the production method of the fourth embodiment, the glossy layer coating liquid contains a specific compound as a release agent, and the above general formulas (1) to (4) The indicated compound is used as a wiping agent, and the surface of the mirror roll is wiped prior to the gloss layer forming step. The mold release agent and the wiping agent do not necessarily have to be the same compound, but the use of the same compound can further suppress the generation of residue. In addition, as the wiping agent, compounds other than the compounds represented by deviations in the general formulas (1) to (4) can be used. It does not prevent further inclusion as long as the effect is not impaired.

In the present invention, the specific compound is used as a release agent. However, a known release agent can be used in combination as long as the function and effect are not impaired. Known release agents include, for example, higher fatty acid amides such as stearic acid amide and oleic acid amide, polyethylene lacquers, and the like. Polyolefin waxes such as polyethylene wax, oxidized polyethylene wax and polypropylene wax, higher fatty acid alkali salts such as calcium stearate, zinc stearate, potassium oleate and ammonium oleate, silicone compounds such as lecithin, silicone oil and silicone wax And fluorine compounds such as polytetrafluoroethylene.

 [0054] (About Support)

 There are no particular restrictions on the type, shape, dimensions, etc. of the support used for the ink jet recording material, but it has low air permeability in terms of cockling after printing and photographic feel! Or prefer a non-permeable support.

 [0055] Examples of the air-permeable support include fine paper, medium paper, coated paper, art paper, cast coated paper, and the like.

The low air-permeable support or the non-air-permeable support means a support having an air permeability of 500 seconds or more, preferably 1000 seconds or more. The air permeability is generally expressed by the air permeability known as an item for evaluating the porosity of paper nonwoven fabric and the like. The air permeability is expressed as the time required for 100 ml of air to pass through a test piece with an area of 645 mm ² and is specified in JIS P 8117 (Paper and board air permeability test method).

 Examples of the low-permeable support or non-permeable support include plastic films such as polyethylene terephthalate, polychlorinated butyl, polycarbonate, polyethylene, and polypropylene, synthetic paper, and white films. In addition, a resin-coated sheet obtained by coating these supports with a thermoplastic resin may be used. As thermoplastic resin, polyolefin resin such as polyethylene and polypropylene, cellulose diacetate resin, polyester resin, or a mixture thereof can be used as the main component. In particular, it is preferable to use polyethylene because it has good adhesion to the resin.

 [0056] Preferably, as the support, for example, polypropylene is stretched and specially processed.

Examples thereof include synthetic paper represented by (manufactured by YUPO Corporation) and resin-coated paper in which the surface of a substrate such as paper is coated with a resin such as polyethylene resin or polypropylene resin. In particular, a resin coated paper whose surface is coated with polyethylene resin kneaded with acid titanium is particularly preferably used because the finished appearance is the same as that of photographic paper. [0057] When the support is a resin-coated paper, the thickness of the resin layer is not particularly limited. For example, in the case of a resin-coated paper coated with a polyethylene resin, the thickness of the polyethylene resin layer is 3 to 50 m is preferred. 5 to 40 μm is more preferred. When the thickness of the polyethylene resin layer is less than 3 μm, defects such as holes are likely to occur in the polyethylene resin layer during coating, and there are many cases where the thickness control is difficult and smoothness is also improved. It ’s profitable. On the other hand, if it exceeds 50 / zm, the cost is increased, but the resulting effect is uneconomical.

 Moreover, in order to improve the adhesiveness with the ink receiving layer described later, it is preferable to perform corona discharge treatment or provide an anchor coat layer on the surface of the resin layer.

 [0058] When paper is used as the base material for the resin-coated paper, a paper base material manufactured using wood pulp as a main material is preferably used. For wood pulp, various chemical pulps, mechanical pulps, regenerated pulps, etc. can be used as appropriate, and these pulps can be adjusted by a beating machine to adjust paper strength, smoothness, papermaking suitability, etc. . The beating degree is not particularly limited, but generally about 250 to 550 ml (CSF: JIS-P-8121) is a preferable range. Also, chlorine-free pulp such as so-called ECF and TCF pulp can be preferably used. Moreover, a pigment can be added to a wood pulp as needed. As the pigment, talc, calcium carbonate, clay, kaolin and the like are preferably used. Although the opacity and smoothness can be increased by adding pigment, the paper strength may decrease if added excessively, and the added amount of pigment is about 1 to 20% by mass of wood pulp. preferable.

 [0059] The support may be one whose color is adjusted with a fluorescent whitening agent such as a fluorescent dye or fluorescent pigment, or one provided with an antistatic layer. . The support may be transparent or opaque.

 [0060] (About ink receiving layer)

 The ink receiving layer is formed on at least one layer on the support, and is a layer mainly fixing dyes and pigments in the ink and absorbing a solvent in the ink. The ink receiving layer includes a pigment and an adhesive, and can further include a cationic compound if necessary.

[0061] Examples of the pigment used in the ink receiving layer include amorphous silica, titanium oxide, barium sulfate, kaolin, clay, calcined clay, zinc oxide, aluminum oxide, aluminum hydroxide hydroxide. , Calcium carbonate, satin white, aluminum silicate, alumina, colloidal silica, zeolite, synthetic zeolite, sepiolite, smectite, synthetic smectite, magnesium silicate, magnesium carbonate, magnesium oxide, diatomaceous earth, styrenic plastic pigment, hide mouth Examples include talcite, urea resin-based plastic pigment, and benzoguanamine-based plastic pigment. One or more types can be used in combination. Among these, amorphous silica, alumina, and zeolite are preferable. Among amorphous silicas, gas phase method silica is particularly preferable.

[0062] Among these, it is preferable to use a pigment having an average particle diameter of 1 µm or less. When the average particle size is 1 m or less, high print density and high gloss can be obtained. It is more preferable that the average particle diameter is 800 nm or less. Particularly preferable is 500 nm or less.

In the present invention, the average particle diameter is a number average particle diameter, and in the case of secondary particles, it is a number average average secondary particle diameter. Specifically, regardless of whether the pigment is in the form of a force slurry, which is a powder, first, 200 g of a 3% pigment aqueous dispersion is prepared, and then stirred and dispersed with a commercially available homomixer at 1000 rpm for 10 minutes. This is the particle size observed immediately with an electron microscope (SEM and TEM) (taken 10,000-400,000 times electron micrographs, measured and averaged the diameter of a 5cm square particle. “Particle Handbook”) , Asakura Shoten, p52, 1991). In addition, the average particle size when containing a plurality of types of inorganic pigments refers to the average particle size of all inorganic pigments.

 [0064] To adjust the average particle size, it is possible to obtain a commercially available pigment by grinding and dispersing it by mechanical means. As mechanical means, ultrasonic homogenizer, pressure homogenizer, liquid collision homogenizer, high-speed rotary mill, roller mill, container drive medium mill, medium agitation mill, jet mill, mortar, crusher (in a bowl-shaped container) Mechanical equipment such as a sand grinder or the like that grinds and kneads the material to be crushed with a bowl-shaped stir bar.

[0065] The specific surface area of the pigment is not particularly limited, but is preferably 150 m ² Zg or more. Here, the specific surface area of the pigment means that the pigment is dried at 105 ° C, and the nitrogen adsorption / desorption isotherm of the obtained powder sample is vacuumed at 200 ° C for 2 hours using Coulter SA3100 type. Measured after deaeration and the specific surface area was calculated by the t method. Specific surface area is the quality of the pigment The surface area per unit volume, the larger the value, the more complicated the shape of the secondary particles, the smaller the primary particles, and the larger the capacity in the pores, and the higher the ink absorption.

[0066] Examples of the adhesive used in the ink receiving layer include polyvinyl alcohol (PVA), polybutyl alcohols such as cation-modified polybutyl alcohol, and modified polyvinyl alcohols such as silyl-modified polybutyl alcohol, casein, and soybeans. Proteins, synthetic proteins, starches, cellulose derivatives such as carboxymethylcellulose and methylcellulose, or water-dispersible resins such as styrene-butadiene copolymers, methylmethacrylate conjugated conjugated polymer latex, acrylic In general, various known and publicly known adhesives in the field of coated paper, such as latex copolymer latex and latex copolymer latex such as styrene-acetate copolymer. In addition, a thermosensitive polymer compound that exhibits hydrophilicity in a temperature range below the temperature sensitive point described later, is higher than the temperature sensitive point, and is hydrophobic in the temperature range can be used. These can be used together as appropriate.

 Among these, polybulal alcohol is preferably used because the coating film strength is easily obtained. Further, the balance between the film formability and the ink absorbability is preferably a polymerization degree of 2000 or more and an oxidation degree of 95% or more, more preferably a polymerization degree of 4000 or more and an acidity of 98% or more. Further, other binders can be used in combination as required.

 [0067] The number of binder parts of the ink receiving layer is preferably 5 parts by mass or more and 50 parts by mass or less, more preferably 5 parts by mass or more and 30 parts by mass or less, more preferably 100 parts by mass of the pigment. Is 5 parts by mass or more and 25 parts by mass or less. If the amount of the binder is excessive, the pores formed between the pigments become small, and a high ink absorption rate may be obtained.If the amount is too small, the coating layer may be cracked. .

 [0068] In order to provide absorbency, it is preferable to suppress the binder component as much as possible. However, if there is little noinder component, the coating layer is applied to the coating layer when the coating liquid is applied to form the ink receiving layer. Prone to cracking. In that case, for example, the coating layer can be prevented from cracking due to hot air during drying by thickening or gelling the coating layer in the initial stage of drying.

[0069] The method for thickening or gelling the coating layer is not particularly limited. For example, the coating layer may be thickened or cross-linked using a water-soluble binder and a crosslinking agent that can be crosslinked. Is a method of gelling, a method of thickening or gelling by supplying energy such as an electron beam, and a temperature-sensitive polymer compound that exhibits hydrophilicity and hydrophobicity depending on temperature conditions as a water-soluble binder. Examples thereof include a method of thickening or gelling.

 [0070] As a method for thickening or gelling using a crosslinking agent capable of crosslinking reaction with a water-soluble binder, the above-described water-soluble binder and a crosslinking agent capable of crosslinking reaction with the water-soluble binder are used in combination. .

 Specifically, a method of applying and impregnating a crosslinking agent in advance and then applying a coating liquid, a method of applying a crosslinking agent in the coating liquid and applying, and after applying the coating liquid, Although it is good to manufacture by the method of apply | coating etc., it is preferable to apply | coat a crosslinking agent previously, since a coating layer with uniform thickening or gelatinization is obtained.

[0071] Examples of the crosslinking agent include boron compounds, epoxy compounds, glycidyl compounds, zirconium compounds, aluminum compounds, chromium compounds and the like. Of these, boron compounds are particularly preferred when combined with polybulal alcohol because thickening or gelling occurs quickly. Boron compounds are oxyacids having a boron atom as a central atom and salts thereof. Examples include orthoboric acid, metaboric acid, hypoboric acid, tetraboric acid, pentafluoric acid, and their sodium, potassium, and ammonium salts. Of these, orthoboric acid and disodium tetraborate are preferably used because they have an effect of moderately thickening the paint. The amount of the boron compound used depends on the type of boron compound and water-soluble binder. It is preferably used at a ratio of 0.01 to L 5 gZm ^{2 on} one side of the substrate.

1. If it exceeds 5 g / m ² , the crosslink density with the water-soluble binder increases, and the coating layer becomes hard and easily breaks. On the other hand, if it is less than 0. OlgZm ² , the crosslinking with the water-soluble binder is weak and the gelation of the coating liquid is weakened, and the coating layer is easily cracked.

[0072] As a method of increasing the viscosity or gelling by supplying energy such as an electron beam, as a binder, there is no radical polymerizable unsaturated bond, and an aqueous solution is irradiated with an electron beam by irradiating an aqueous solution. Using a water-soluble binder that forms a gel, apply a coating solution containing 1 to 100 parts by weight of a water-soluble binder to 100 parts by weight of an inorganic pigment, and then irradiate an electron beam to the coating. The applied coating solution is turned into a gel at the hide mouth and then dried. A coating layer may be formed.

 [0073] Examples of the water-soluble binder that does not have a radical polymerizable unsaturated bond and forms a hydrated gel by irradiating an aqueous solution with an electron beam include polybulal alcohol, polyethylene oxide, polyalkylene oxide, Polybulyl pyrrolidone, water-soluble polyvinyl acetal, poly N vinylacetamide, polyacrylamide, polyacryloyl morpholine, polyhydroxyalkyl acrylate, polyacrylic acid, hydroxyethyl cellulose, methinoresenorelose, hydroxypropino methenorescenole Examples thereof include rose, hydroxypropino cellulose, gelatin, casein, water-soluble derivatives thereof, and copolymers thereof, and these may be used alone or in combination.

 As an electron beam irradiation method, for example, a scanning method, a curtain beam method, a probe beam method, or the like is adopted, and an acceleration voltage of about 50 to 300 kV is appropriate when the electron beam is irradiated. It is preferable to adjust the electron beam irradiation dose in the range of l to 200 kGy. If it is less than lkGy, it is not sufficient for gelling the coating layer, and irradiation exceeding 200 kGy is not preferable because it may cause deterioration or discoloration of the coating layer.

 [0074] As a water-soluble binder, a temperature-sensitive polymer compound that exhibits hydrophilicity and hydrophobicity depending on temperature conditions is used. Use thermosensitive polymer compounds that are hydrophilic in the following temperature range and hydrophobic in the temperature range above the temperature sensitive point! / !. When this temperature-sensitive polymer compound is used, coating is performed at a temperature higher than the temperature-sensitive point, and cooling is performed below the temperature-sensitive point, whereby the applied layer is thickened or gelled and then dried. A recording layer may be formed. As such a temperature-sensitive polymer compound, a temperature-sensitive polymer obtained by polymerization in the coexistence of polybulal alcohol and Z or a polybulal alcohol derivative disclosed in JP-A-2003-40916. A compound can be illustrated.

[0075] It is preferable to add a cationic compound to the ink receiving layer. Examples of the cationic compound include 1) polyalkylene polyamines such as polyethylene polyamine and polypropylene polyamine or derivatives thereof, 2) secondary amino groups, tertiary amino groups, and quaternary amino groups. 3) Polyburamine and polybulamidines, 4) Dicyandiamide, a dicyan cationic compound represented by a formalin copolymer 5) Dicyandiamide 'polyamine cationic compound represented by polyethyleneamine copolymer, 6) epichlorohydrin' dimethylamine copolymer, 7) diallyldimethylammonium-SO polycondensation 8) diallylamine salt 'SO polycondensate, 9) diallyldimethyla

 twenty two

 N-um chloride polymer, 10) diallyldimethylammonium chloride-acrylamide copolymer, 11) copolymer of arylamine salt, 12) dialkylaminoethyl (meth) acrylate quaternary salt copolymer, 13 ) Acrylamide 'diallylamine copolymer, 14) Cationic resin having a 5-membered ring amidine structure, 15) Polyoxy salt, aluminum acetate, aluminum acetate, basic zirconyl chloride, zirconyl acetate, etc. Examples include cationic compounds. These cationic compounds can be used in combination.

 [0076] When a cationic compound and a pigment are blended, particularly when silica is blended as a pigment, silica is generally ionic, so that agglomeration of fine silica particles may occur during mixing. In this case, when commercially available amorphous silica (having a secondary particle size of several microns) is pulverized into fine particles by applying a strong force by mechanical means, the amorphous material before the pulverization treatment is used. A cationic substance is mixed and dispersed together in silica and dispersed and pulverized by force mechanical means, or a cationic substance is mixed in a finely divided silica secondary particle dispersion to thicken and aggregate. Thereafter, the specific particle size may be adjusted by taking a method of mechanical dispersion and pulverization again.

 In the present invention, the ink receiving layer to be formed may be a single layer or a multilayer. When the ink receiving layer is a multilayer, the pigment and adhesive used can be changed for each ink receiving layer. At this time, for example, when the ink receiving layer has a two-layer structure, a very fine pigment is used for the surface side ink receiving layer (upper layer) to increase the glossiness, and the ink receiving layer (lower layer) in contact with the support is used. If a pigment having a larger particle size is used in (), the lower layer ink absorbency is increased even if the upper layer ink absorbency is low, so that both glossiness and ink absorbency can be maintained or improved. .

 [0078] In addition to the above, the ink-receiving layer may also include various pigments, dispersants, thickeners, antifoaming agents, colorants, antistatic agents generally used in the manufacture of coated paper, Various auxiliary agents such as preservatives may be added as appropriate.

[0079] A coating liquid in which these components are dispersed in a solvent is coated on a support and dried. Thus, an ink receiving layer is formed. The solvent for the coating solution is not particularly limited, but water is preferred for reasons such as coating suitability.

Total coating amount of the ink receiving layer, 5~70gZm ² is preferably tool 10～50GZm ² is S more preferably more favorable Mashigu 15～40GZm ² force. Further, the total thickness of the coating layer is preferably 7 to 105 / ζ πι, more preferably 15 to 75 111, and further preferably 22 to 60 111. If the coating weight is less than 5 g Zm ^2, not only the gloss layer may not be sufficiently formed, the ink absorption Osamusei is lowered, there is a case where recording suitability poor, the coating amount is more than 70GZm ² As a result, the strength of the coating layer is reduced, and trouble may occur when cutting the recording paper or transporting the recording medium by the printer.

 The coating process may be performed once or multiple times. If the coating process is performed a plurality of times, the ink receiving layer can be multi-layered. In addition, by applying the coating liquid in multiple steps, many coating liquids can be applied while suppressing the occurrence of cracks, and the ink absorption capacity of the ink receiving layer can be increased. .

[0080] The coating device for the ink receiving layer includes a blade coater, an air knife coater, rollco ~ "'~", no ¹ ~ "co ¹ ~"' ~ ", gravure ¹ ~~ ta '~", DAIKO ¹ Various known coating devices such as ~~ ta '~~ i ~~ tenko ¹ ~~ ta' ~~, lymph-coater, squid bead coater and the like can be used. In particular, the air coater is preferably used because it can handle a wide range of paint properties and coating amounts. Die coaters and curtain coaters are excellent in coating amount uniformity, and are particularly preferred for glossy type ink jet recordings for high-definition recording. Although there is no particular limitation, various conventionally known heating drying methods such as hot air drying, gas heater drying, high-frequency drying, electric heater drying, infrared heater drying, laser drying, and electron beam drying are appropriately employed.

[0081] (Glossy layer)

 The coating liquid for forming a glossy layer contains a fine pigment and the release agent. The content of the release agent in the coating solution is preferably 0.5 to: LO parts by mass with respect to 100 parts by mass of the fine pigment. By setting it as such a range, the peelability from the mirror surface roll 5 becomes more preferable.

Examples of the fine pigment include colloidal silica, amorphous silica, alumina, aluminum hydroxide Examples thereof include transparent or white pigments such as sulfur and magnesium carbonate. Of these, particularly preferred pigments are colloidal silica, alumina or amorphous silica.

 [0082] The use of colloidal silica or alumina is particularly preferred because it improves glossiness. The colloidal silica or alumina has an average primary particle diameter of 5 to: 10 to 80 nm, preferably LOOnm. More preferably, it is 20-70 nm. When the average primary particle diameter is less than 5 nm, the ink absorbability may be reduced. When the average primary particle diameter exceeds 1 OO nm, the transparency tends to decrease and the print density tends to decrease.

 When amorphous silica is used, the average primary particle diameter is preferably 5 to: LOOnm, more preferably 5 to 40 nm. The amorphous silica preferably has an average secondary particle diameter of 1 m or less, more preferably 10 to 700 nm.

 [0083] When primary particles such as colloidal silica or alumina are used as the fine pigment in the glossy layer, the ink absorption rate tends to decrease because the porosity decreases. Therefore, a preferable glossy layer thickness is 0.02 to 4 111, more preferably 0.05 to 2 / ζ πι.

 In view of the balance between the ink absorption capacity and the ink absorption speed, the thickness of the gloss layer is preferably 1 to 10 or less of the total thickness of the ink receiving layer. More preferably, it is 1Z20 or less, more preferably 1Z30 or less.

 [0084] For the gloss layer, aqueous rosin can be used as appropriate when the adhesive strength of the fine particles is insufficient, or when the surface requires a rosin-based gloss. However, the use of aqueous rosin may reduce the ink absorbability, so that it is preferable to use as little amount as possible.

 [0085] Examples of aqueous rosin include polybulu alcohol, cation-modified polybulu alcohol, polypyrrolidone and copolymers thereof, cellulose derivatives such as polymethylhydroxycellulose and carboxymethylcellulose, modified starch, cationized starch, etc. Proteins such as starch, casein, soy protein, synthetic protein, polystyrene resin, polybutadiene resin, polyurethane resin, polyacrylic acid resin, polyacetate resin, polychlorinated resin, These copolymers, modified products and the like can be mentioned, and they can be used alone or in combination. Styrene 'acrylic copolymers are particularly preferable.

When the water-based resin is a water-dispersible resin, the average particle diameter of the resin is preferably in the range of 20 to 150 nm. If the resin is less than 20 nm, the ink absorbency may be lowered and may exceed 150 nm. In the case of printing, transparency may be lowered and print density may be lowered.

 The glass transition temperature of the aqueous resin is preferably in the range of 50 to 150 ° C. When the glass transition temperature is lower than 50 ° C., the gloss layer is excessively formed at the time of drying, and the porosity of the gloss layer is lowered, and the ink absorbability may be lowered. When the temperature is higher than 150 ° C, film formation is insufficient, and gloss and strength may be insufficient.

 The blending amount of the aqueous resin is preferably 0 to 50 parts by mass, more preferably 0 to 30 parts by mass with respect to 100 parts by mass of the pigment.

[0086] Similar to the ink-receiving layer, a cationic compound is added to the glossy layer as needed in order to fix the dye in the ink, impart water resistance, and improve the recording density. be able to . When the gloss layer contains a cationic ionic compound, the mirror roll tends to be stained more frequently, so that the effect exhibited by using the release agent becomes more remarkable.

 [0087] If necessary, a thio-containing compound may be added to the glossy layer as a preservability improving agent. Among the compounds containing thio, 1,2-bis (2-hydroxyethylthio) ethane, 1,2bis (2hydroxyethylthio) butane, 2,2 'dithioethanol and 3,3, thio Dipropionic acid is preferred, and 1,2-bis (2-hydroxyethylthio) ethane is more preferred. These Xio compounds may be blended singly or in combination of two or more.

 [0088] In addition to the above, for the glossy layer, various pigments, dispersants, thickeners, antifoaming agents, colorants, antistatic agents, antiseptics generally used in the manufacture of coated papers are also used. Various auxiliaries such as agents may be added as appropriate.

 [0089] (First embodiment of the present invention)

 The first embodiment is an ink jet recording material having an ink receiving layer on a support, and having a gloss layer containing a fine facet and imparting gloss by being pressed against a mirror roll on the ink receiving layer. On the other hand, the glossy layer contains at least one kind of a specific compound. By using a specific compound, the release from the mirror roll is stabilized, so that a highly glossy ink jet recording material is obtained.

[0090] When a gas-permeable support is used as the support, a known cast coating method is adopted. Good.

 That is, after applying the gloss layer, while the coating layer is in a wet state, it is pressed against a heated mirror roll and dried to give a gloss finish, and the wet coating layer is treated with an acid, salt, or heat. It is made into a gel state by pressing it onto a heated mirror roll and dried to give it a glossy finish.After the gelling cast method, once the wet coating layer is dried, it is wet-plasticized with a rewetting liquid, For example, a rewet casting method in which a heated mirror surface roll is pressed and dried to give a gloss finish.

 [0091] When a low-permeable support or a non-permeable support is used as the support, the production method of the second or fourth embodiment described later can be employed. Note that when a low-permeable support or a non-permeable support is used as the support, cockling does not occur.

 [0092] (Second embodiment of the present invention)

 In the second embodiment, at least one layer of an ink receiving layer having a pigment and an adhesive is formed on a support, and then at least one kind of a fine pigment and a specific compound is formed on the ink receiving layer. Coating process for providing a glossy layer coating liquid layer containing as a release agent, a pressing process in which the glossy layer coating liquid layer is pressed with a press roll so as to be in contact with the mirror roll, and the coating liquid layer is dried. A glossy layer is formed by a glossing step including a drying step.

 [0093] This production method is not limited as a support, or even when a strong low-permeability support or a non-permeable support that cannot be produced by a conventionally known cast coating method is used. It is preferable because it can form a smooth surface.

 FIG. 1 shows an example of a preferred production process of the ink jet recording material production method according to the second embodiment.

In the present embodiment, first, the ink receiving layer 3 is provided on the low air-permeable or non-air-permeable support 2 (ink receiving layer forming step). Then, the support 2 is placed between the mirror roll 5 and the press roll 6 so that the ink receiving layer 3 is in contact with the mirror mirror 5. Next, a coating liquid 4 containing a specific compound as a release agent for forming a glossy layer is supplied onto the ink receiving layer 3 and applied to the upper part of the tangent line between the mirror roll 5 and the press roll 6. Puddle Form (coating process). While the coating liquid 4 is in a wet or semi-dry state, the support 2 is placed between the mirror roll 5 and the press roll 6 so that the surface supplied with the coating liquid 4 is in contact with the mirror roll 5. After forming the coating solution layer 7 by passing it while pressing, the coating solution layer 7 is immediately peeled off from the mirror roll 5 (pressing step). Thereafter, drying (conditioning) is performed using a dryer 9 to obtain an ink jet recording body 1 including a support 2, an ink receiving layer 3, and a glossy layer 8.

 [0095] (Glossy layer forming method)

 Coating process>

 The glossy layer is formed by coating the coating liquid 4 on the ink receiving layer 3 with the components described above dispersed therein. The dispersion medium used for the preparation is not particularly limited, but water is preferable for reasons such as coating suitability.

 The total solid content concentration in the coating solution is preferably 0.1 to 15% by mass, more preferably 0.5 to 10% by mass.

[0096] The coating amount of the glossy layer is preferably 0.01 to 3 gZm ² as a dry mass. 0.03 to ² gZm

2 is more preferable 0.05-: Lg / m ² is more preferable. When the coating amount is less than 0.01 g / m ^2, it is difficult to form a sufficient gloss layer, and the glossiness tends to be low. If the coating amount exceeds 3 gZm ² , glossiness is easily obtained, but ink absorbency and recording density tend to decrease.

 [0097] <Pressing process>

 Next, while the supplied coating liquid 4 is in a wet or semi-dry state, the support 2 is placed on the mirror roll 5 and the press roll so that the surface to which the coating liquid 4 is supplied contacts the mirror roll 5. After forming the coating liquid layer 7 by passing it between 6 and pressing, a pressing process for peeling the coating liquid layer 7 from the mirror roll 5 is immediately performed.

By pressing the coating liquid 4 in a wet or semi-dry state between the heated mirror roll 5 and the press roll 6 with the press roll 6 so that the surface supplied with the coating liquid 4 is in contact with the mirror roll 5. Then, the coating liquid layer 7 is formed on the ink receiving layer 3. At this time, the coating liquid layer 7 is brought into close contact with the ink receiving layer 3 by the press pressure and temperature, and a uniform film without cracks is formed. It is also possible to perform a drying process in which the coating liquid layer 7 is separately dried in a drying zone such as the dryer 9 after the pressing process.

[0098] The surface temperature of the mirror roll is preferably in the range of 40 to 130 ° C from the operability such as drying conditions, adhesion to the ink receiving layer, and glossiness of the gloss layer surface. Range is preferred. When the surface temperature force of the mirror roll is less than 40 ° C, the surface strength of the ink jet recording material may be lowered, or the adhesive property of the ink receiving layer, which is difficult to soften the adhesive of the ink receiving layer, is poor. To do. If the temperature exceeds 130 ° C, the ink-absorbing layer may be formed excessively, resulting in a decrease in ink absorbability, and the coating solution 4 may boil and the glossy surface may deteriorate.

 Also, the mirror roll is preferably a metal roll because it provides excellent mirror finish with good heat resistance. In addition, when a so-called semi-glossy paper that reduces the glossiness by providing fine irregularities on the surface, the metal roll may be provided with fine irregularities. The average center roughness Ra of the mirror roll is a force that varies depending on the target gloss, for example, 10 m or less.

[0099] The material of the press roll is preferably made of heat-resistant resin in order to make the pressurization with the mirror roll as described above more uniform.

 It is preferable that the press roll is pressed so that the linear pressure between the mirror roll and the press roll is preferably 50 to 3500 N / cm, more preferably 200 to 3000 N / cm! / ヽ. If the linear pressure between the mirror roll and the press roll is less than 50 NZcm, the linear pressure is difficult to be uniform and the glossiness decreases, the adhesion of the coating liquid layer 7 to the ink receiving layer 3 decreases, and the surface cracks. If it exceeds 3500 NZcm, the ink absorbability may be reduced due to excessive pressurization of the ink jet recording medium and destruction of the gap between the ink receiving layer and the glossy layer.

[0100] <Drying (humidification) process>

 In the present invention, the moisture in the ink jet recording medium 1 (support 2, ink receiving layer 3 and coating liquid layer 7) immediately after peeling from the mirror roll 5 is in a wet state or a semi-dry state. The moisture content of the coating layer is greatly influenced by the coating amount of the ink receiving layer and the glossy layer, for example, 7 to 100%.

After peeling from the mirror roll 5, it reaches the equilibrium moisture until it is wound with a winder. In such a case, a humidity control / drying device is not required, but if the moisture contained in the support 2 such as paper whose coating speed is high is high, it is peeled off from the mirror roll 5 and wound up with a winder. In the meantime, a humidity control process having a humidity control apparatus or a drying process having a drying apparatus is necessary. The capacity and specifications of the humidity control or drying device are appropriately set according to the difference between the moisture content and the equilibrium moisture content at the time when the ink jet recording material is peeled from the mirror roll 5 and the coating speed.

 [0101] The surface of the gloss layer 8 formed as described above has a 75 ° surface gloss (JIS P8142) of preferably 70% or more, more preferably, in order to obtain a silver salt photograph-like texture. Is 75% or more, more preferably 80% or more, and the image clarity when using an optical comb with a width of 2. Omm (JIS H8686-2) is preferably 55% or more, more preferably 57% or more, More preferably, it is 60% or more, and most preferably 65% or more.

 [0102] In FIG. 1, the mirror roll 5 and the press roll 6 are arranged side by side, and a coating liquid reservoir is formed above the tangent line between the mirror roll 5 and the press roll 6 and supported in the vertical direction. For example, the mirror roll 5 and the press roll 6 may be arranged side by side, and the coating liquid 4 may be supplied onto the ink receiving layer 3 and passed through the support in the lateral direction. .

 [0103] As described above, the conventional method for producing cast coated paper The coating layer surface in a wet plasticized state is pressed against a heated mirror roll and dried to form a glossy layer, and then separated from the mirror roll. In contrast, in the second embodiment, a coating liquid containing a fine pigment and a specific release agent for forming a glossy layer is supplied on the ink receiving layer. While the coating liquid is in a wet or semi-dried state, the support is passed between the mirror roll and the press roll while being pressed so that the surface supplied with the coating liquid is in contact with the mirror roll. Immediately after forming the liquid layer, the glossy layer is provided by peeling off the coating liquid layer.

 The ink jet recording material obtained in this way is as high as a silver salt photograph, has surface glossiness and dot reproducibility, and is particularly excellent in appearance and ink absorbency, such as high glossiness and high smoothness. Ink jet recording suitability with good releasability during operation.

 [Third Embodiment of the Present Invention]

In the third embodiment, a mirror finish containing at least one specific compound as a release agent is used. It is a coating liquid for raising layer. Such a coating solution is a coating solution that can be smoothly released when pressed against a mirror roll.

 It is preferable that the mirror surface finishing layer coating liquid of the third embodiment contains 0.5 to 10 parts by mass of a release agent with respect to 100 parts by mass of the fine pigment. By setting it as such a range, the peelability from a mirror surface tool will become more excellent.

 The coating liquid for the mirror finish layer according to the third embodiment is not limited to the configuration of the first embodiment and the second embodiment. For example, the coating liquid formed by a cast coating method It is also useful as a coating solution to be used. The present invention is not limited to inkjet recording media, and can also be applied to cast coated paper for printing. Examples of the cast coating method include a wet casting method, a gelled casting method, and a film casting method for transferring the shape of a surface such as a film.

(Fourth embodiment of the present invention)

 In the method for producing an ink jet recording material of this embodiment, first, a base material 10 is prepared in which at least one ink receiving layer 3 is provided on a support 2.

 Next, the base material 10 is arranged between the mirror roll 5 and the press roll 6 so that the ink receiving layer 3 is positioned on the mirror roll 5 side, and the gloss layer is formed on the ink receiving layer 3 of the base material 10. Supply the coating solution to form 7. Then, while the coating liquid is in a wet or semi-dry state, the substrate 10 is passed between the mirror roll 5 and the press roll 6 so that the coating liquid contacts the mirror roll 5. Press to form the glossy layer 8 (glossy layer forming step). Thereby, the inkjet recording body 1 can be obtained.

 The ink receiving layer 3 and the gloss layer 8 can be provided in the same manner as in the embodiment 2, but in this embodiment, the surface of the mirror roll 5 is wiped off before the gloss layer forming step. Then wipe it off with force (wiping process).

[0106] The wiping process will be described below.

 Wiping process>

The mirror surface roll 5 may be polished with a puffing agent containing an abrasive and an oily substance before operation. In such a case, the mirror roll 5 is often wiped with a puffing agent after polishing. In addition, the surface of the mirror roll 5 may be wiped off after a certain period of operation and before restarting. In this embodiment, a compound represented by any one of the general formulas (1) to (4) is used as a wiping agent for wiping the mirror roll 5. The release agent and the wiping agent do not necessarily have to be the same compound, but since the generation of waste can be further suppressed, the release agent and the wiping agent may be the same compound. preferable.

 The wiping method is not particularly limited, and examples thereof include a method of wiping the surface of the mirror roll 5 with a cloth.

[0107] According to the ink jet recording material of the present embodiment, even when operated for a long period of time, it is difficult for debris to be generated. This is presumed to be because it is difficult to form a substance that becomes difficult to react with the release agent and the wiping agent.

 Example

 [0108] The present invention will be described more specifically with reference to the following examples, but the present invention is of course not limited thereto. In the examples, “parts” and “%” are indicated by “parts by mass” and “mass%”, respectively, unless otherwise specified.

 [0109] (Preparation of silica sol A)

Vapor phase silica (trade name: Leo Mouth Seal QS-30, average primary particle size 10nm, specific area 300m ² / g, manufactured by Tokama Co., Ltd.) was dispersed and pulverized with a sand grinder. : Nanomizer, manufactured by Nanomizer Co., Ltd.), and repeated pulverization and dispersion. After classification, a 10% dispersion having an average secondary particle size of 80 nm force was prepared. Add 10 parts of diallyldimethylammonium chloride (trade name: Ducens CP-1 03, manufactured by Senriki Co., Ltd.) as a cationic compound to the dispersion to agglomerate the pigment and increase the viscosity of the dispersion. Then, using a nanomizer again, pulverization and dispersion were repeated, and an 8% dispersion having an average secondary particle size of 300 nm was prepared to obtain silica sol A.

 [0110] (Preparation of paper support)

CSF QIS P— 8121) is mixed with softwood bleached kraft pulp (NBKP) beaten at about 250m and hardwood bleached kraft pulp (LBKP) beaten at about 250m with CSF at a mass ratio of 2: 8. A pulp slurry having a concentration of 0.5% was prepared. In this norp slurry, cationized starch 2.0%, alkyl ketene dimer 0.4%, Polyacrylamide resin sulfonated 0.1% and polyamide polyamine epichlorohydrin resin 0.7% were added and dispersed with sufficient stirring.

The pulp slurry having the above composition was made into paper with a long net machine and passed through a drier, a size press and a machine calendar to produce a base paper having a basis weight of 180 gZm ² and a density of 1. OgZcm ³ . The size press solution used in the size press process was prepared by mixing carboxyl-modified polybulal alcohol and sodium chloride sodium salt at a mass ratio of 2: 1, dissolving this in water and overheating to prepare a concentration of 5%. Thus, a total of 25 ml Zm ^{2 of} this size press solution was applied to both sides of the paper to obtain a paper support (air permeability: 300 seconds).

[0111] (Resin-coated support)

On both sides of the paper support, after corona discharge treatment, the polyolefin榭脂composition 1 below were mixed and dispersed in a Banbury one mixer, the felt side of the paper support, so as to be coated amount 25gZ m ² In addition, the polyolefin resin composition 2 was applied to the wire side of the paper support with a melt extruder (melting temperature 320 ° C.) having a T-die so that the coating amount was 20 gZm ² . The felt side is cooled and solidified with a mirror side cooling roll, and the wire side is cooled with a rough surface. The smoothness (Oken type, J. TAPPI No. 5) is 6000 seconds, opacity (JIS

P8138) obtained a 93% rosin-coated support.

[0112] "Polyolefin resin composition 1"

Long chain type low density polyethylene resin (density 0.926 gZcm ³ , melt index 20 gZ 10 minutes) 35 parts, low density polyethylene resin (density 0.919 gZcm ³ , melt index 2 gZlO content) 50 parts, anatase type titanium dioxide ( Product name: A-220, manufactured by Ishihara Sangyo Co., Ltd.) 15 parts, zinc stearate 0.1 part, antioxidant (trade name: Irganox 1010, manufactured by Ciba Gaigi Co., Ltd.) 0.03 part, ultramarine (trade name: Blue (Russia blue NO. 2000, manufactured by Daiichi Kasei Co., Ltd.) 0.09 parts, optical brightener (trade name: UVITEX OB, manufactured by Ciba Gigi Co., Ltd.) 0.3 parts were mixed to make a polyolefin resin composition 1 .

[0113] "Polyolefin resin composition 2"

High density polyethylene榭脂(density 0. 954gZcm ^3, melt index 20gZlO min) 65 parts, low density polyethylene榭脂(density 0. 919gZcm ^3, melt index 2gZlO min) 35 parts of melted and mixed, polyolefin榭脂composition 2 It was. [0114] Example 1

 (Formation of ink receiving layer)

Silica sol A 100 parts cocoon 5% polybulualcohol (Kuraren clay, trade name: PVA- 135 H, polymerization degree: 3500, ken degree: 99% or more) 24 parts are mixed and the coating amount is 2 on the Mayer bar. The ink receiving layer was provided by coating and drying on a support coated with a resin so as to be 5 gZm ² . The thickness was 37 μm.

 [0115] (Formation of gloss layer)

 Next, 100 parts of cationic colloidal silica (trade name: Snowtex AK, manufactured by Nissan Chemical Industries, Ltd.) and 3 parts of dicocoyl dimethyl ammonium chloride as a release agent are mixed and diluted to 10%. Using a machine, coat on the ink receiving layer, and at the same time, press the chrome-plated mirror surface roll with a surface temperature of 100 ° C at a linear pressure of 2000 NZcm, immediately release from the mirror surface roll, and dry with a dryer. Thus, a gloss layer was formed to obtain an ink jet recording material. The gloss layer had a thickness of 1 μm.

 [0116] Example 2

 An ink jet recording material was obtained in the same manner as in Example 1 except that 3 parts of didecyldimethylammonium fluoride was used as a release agent for forming the glossy layer of Example 1. The thickness of the glossy layer was 1 μm.

[0117] Example 3

 An ink jet recording material was obtained in the same manner as in Example 1 except that 3 parts of distearyldimethylammonium chloride was used as a mold release agent for forming the glossy layer of Example 1. The thickness of the glossy layer was 1 μm.

[0118] Example 4

 An ink jet recording material was obtained in the same manner as in Example 1 except that 3 parts of dioleyldimethylammonium chloride was used as a release agent for forming the glossy layer of Example 1. The thickness of the glossy layer was 1 μm.

[0119] Example 5

An ink jet recording material was obtained in the same manner as in Example 1 except that 3 parts of trilauryl ammonium chloride was used as a release agent in the formation of the glossy layer of Example 1. Glossy layer thickness Was 1 m.

[0120] Example 6

 An ink jet recording material was obtained in the same manner as in Example 1 except that 3 parts of tetradecyl ammonium chloride was used as a release agent in the formation of the glossy layer of Example 1. Glossy layer thickness 1 μm "

[0121] Example 7

 In the formation of the glossy layer in Example 1, Example 5 was added except that 5 parts of allylamin 'diallylamine copolymer polymer (PAA-D41, manufactured by Nittobo Co., Ltd.) was added as a cationic compound in the coating solution. An ink jet recording material was obtained in the same manner as in 1. The thickness of the glossy layer was 1 m.

[0122] Comparative Example 1

 An ink jet recording material was obtained in the same manner as in Example 1 except that, in forming the glossy layer of Example 1, 3 parts of dicocoyldimethylammonium chloride was added as a releasing agent. The gloss layer had a thickness of 1 μm.

[0123] Comparative Example 2

 An inkjet recording material was obtained in the same manner as in Example 1 except that 3 parts of stearyltrimethylammonium chloride was used as a release agent in the formation of the glossy layer of Example 1. The thickness of the glossy layer was 1 μm.

[0124] Comparative Example 3

 In the formation of the glossy layer of Example 1, an ink jet recording material was obtained in the same manner as in Example 1 except that 3 parts of calcium stearate was used as a release agent. Glossy layer thickness is 1 m.

[0125] Comparative Example 4

 In the formation of the glossy layer of Example 1, a cationic polyethylene wax (trade name: Mei-Tex PEC-270, manufactured by Meisei Chemical Co., Ltd.) 3 parts was used as a release agent. A record was obtained. The gloss layer had a thickness of 1 μm.

[0126] Example 8

 (Formation of inner ink receiving layer)

Silojet 703A (specific surface area: 280m ² Zg, average secondary particle size 300nm, grace Bison Co., Ltd.) is mixed with 24 parts of 5% polybulualcohol (Kurarene clay, trade name: PVA-135H, polymerization degree: 3500, ken degree: 99% or more), and the coating amount is 20 gZm ² with a Mayer bar. An inner ink receiving layer was provided by coating and drying on a support coated with a resin.

[0127] (Formation of outer ink receiving layer)

On the inner ink receiving layer, 100 parts of silica sol A was mixed with 24 parts of 5% polybulualcohol (Kuraray Co., Ltd., trade name: PVA-135H, polymerization degree: 3500, key degree: 99% or more), and a Meyer bar. The outer ink receiving layer was provided by coating and drying so that the coating amount was 5 g / m ² .

 [0128] (Formation of glossy layer)

 Next, 100 parts of cationic colloidal silica (trade name: Snowtex AK, manufactured by Nissan Chemical Industries, Ltd.) and 3 parts of distearyldimethylammonium chloride as a release agent are mixed and diluted to 10%. Using a machine, coat on the outer ink-receptive layer, and at the same time, press the chrome-plated mirror surface roll with a surface temperature of 100 ° C at a linear pressure of 2000 NZcm, immediately release from the mirror surface roll, and use a dryer. A glossy layer was formed by drying to obtain an ink jet recording material. The total thickness of the ink receiving layer was 39 μm, and the thickness of the glossy layer was 1 μm.

 [0129] Example 9

 In the formation of the ink receiving layer of Example 8, a commercially available polypropylene synthetic paper (trade name: YUPO GWG-140, manufactured by YUPO Corporation) was used instead of the resin-coated support. An ink jet recording material was obtained in the same manner as in Example 8. The total thickness of the ink receiving layer was 39 μm, and the thickness of the glossy layer was 1 μm.

[0130] (Evaluation method)

 The ink jet recording materials obtained in the examples and comparative examples were evaluated for 75 degree surface glossiness, cockling, ink absorbency, printing density, maximum value of pore diameter distribution curve, releasability and water resistance. Are shown in Table 1. About each evaluation, it measured by the following method.

[0131] (75 degree surface gloss)

 The 75 degree glossiness of the ink jet recording material was measured by the method described in JIS-P8142.

[0132] (cock ring) Cockling was performed using an inkjet printer PIXUS iP8600 (manufactured by Canon Inc.). The ink cartridges used were Canon BCI-7Bk, BCI-7C, BCI-7M, BCI-7Y, BCI-7PC, BCI-7PM, BCI-7R and BCI-7G. The evaluation was made by visual inspection of cockling that occurred in the solid printing part of two colors of cyan ink and magenta ink.

 A: A cockling is not recognized at all and is in a good state.

 B: There is cockling, which is a problem level depending on usage.

 C: The level of cockling must be practical!

[0133] (Ink absorbency)

 This was carried out using an ink jet printer PIXUS ΪΡ4100 (manufactured by Canon Inc.). The ink strength cartridge is BCI-7Bk ゝ BCI-7C, BCI-7M, BCI-7Y and BC I 3eBk manufactured by Canon. The evaluation is green solid printing, and the ink absorption state of the solid printing part is visually observed. I went there.

 A: There is no unevenness in the solid part and it is in a good state.

 B: The power to see some unevenness in the solid part Almost no problem! Level.

 C: Some level of unevenness is observed on the solid part, which may cause problems depending on the usage conditions.

[0134] (Print density)

 The print density was measured using an inkjet printer PIXUS iP8600 (Canon). The ink cartridges used were Canon BCI-7Bk, BCI-7C, BCI-7M, BCI-7Y, BCI-7PC, BCI-7PM, BCI-7R and BCI-7G. The black solid print portion was measured using a Darretag Macbeth reflection densitometer (manufactured by Darretag Macbeth, RD-19I). The numbers shown in the table are average values of five measurements.

[0135] (Maximum pore diameter distribution curve)

 The maximum value (nm) of the total pore distribution curve was obtained by a mercury intrusion method using a micrometric sporesizer 9320 (manufactured by Shimadzu Corporation).

[0136] (Releasability)

 The releasability during the formation of the gloss layer was evaluated by sensory evaluation.

A: Continuous operation is possible without problems. B: There is a practical problem that the mirror roll stains occur relatively frequently during operation. C: There is a problem that mirror roll stains occur frequently during operation.

[0137] (Water resistance)

 Create solid images of black, cyan, magenta, yellow, red, green, and blue, drop the water at 25 ° C, let it dry naturally, and visually observe the color change of the image to check the water resistance level. Evaluated.

 A: The image is excellent with almost no color change or color transfer.

 B: Slight discoloration and color transfer were observed, but it was a problem and level that was a problem in practice. C: Discoloration and color transfer are observed, and there are practically problematic levels.

 D: Discoloration and color transfer are remarkable.

[0138] [Table 1]

[0139] Thus, each Example in which a specific release agent was blended in the glossy layer was an ink jet recording material excellent in glossiness and satisfying ink absorbability and releasability.

 Industrial applicability

[0140] Since the ink jet recording material of the present invention is stably released from the mirror roll during production, the surface thereof has a surface gloss as high as that of a silver salt photograph, and has high dot reproducibility. It has excellent ink absorbability, does not cause cockling with an ink solvent having a high recording density, and has excellent ink jet recording suitability. The ink jet recording material of the present invention The manufacturing method is excellent in releasability of mirror roll force, and is less likely to generate debris even if operated for a long period of time V. Therefore, a highly glossy inkjet recording material can be manufactured stably.

Claims

The present invention relates to an ink jet recording medium having an ink-receiving layer on a support, and a gloss layer containing a fine pigment on the ink-receiving layer and imparting gloss by being pressed against a mirror surface. An inkjet recording material, wherein the glossy layer contains at least one compound represented by the following general formulas (1) to (3).

[Chemical 1]

(Wherein R ¹ and R ² are alkyl or alkenyl groups having 8 to 28 carbon atoms, R ³ and R ′ are H or alkyl groups having 1 to 4 carbon atoms, X— is F—, Cl_, Br ― Or I— Indicates) [Chemical 2]

(Wherein, R ^5, R. and R ⁷ is an alkyl group or Aruke of 8 to 28 carbon atoms - le group, R ⁸ is H or an alkyl group having 1 to 4 carbon atoms, Xl¾F_, Cl ^_, Br-, or厂 Indicates 厂

[Chemical 3]

(In the formula, R ⁹ , R ^1G , ¹ and R ¹² each represent an alkyl group or a alkenyl group having 8 to 28 carbon atoms, ΧΊ F1, Cl ^_ , Br-, or 厂.)

[2] Compound power represented by general formula (1) to general formula (3) contained in the glossy layer Dicocoyl dimethyl ammo-um chloride, didecyl dimethyl ammo-mu chloride, dilauryl dimethyl ammo-mu chloride, distearyl dimethyl ammo-um chloride 2. The ink jet recording according to claim 1, wherein said ink jet recording is at least one selected from dioleyldimethylammonium chloride.

 [3] Fine pigment strength of the gloss layer Average primary particle size 3 to: Colloidal silica of LOOnm, average primary particle size 3 to: Alumina of LOOnm, and average primary particle size 3 to: L00 nm, and average secondary particle size The inkjet recording material according to claim 1 or 2, which is at least one selected from amorphous silica of 1 m or less.

 [4] The inkjet recording body according to any one of claims 1 to 3, wherein the support is a film or a resin-coated paper.

 [5] A step of forming at least one layer of an ink receiving layer having a pigment and an adhesive on a support, and a fine pigment and a following general formula (1) to general formula (3) on the ink receiving layer: A coating step for providing a coating liquid layer for a glossy layer containing at least one compound to be used as a release agent, a pressing step for pressing the coating liquid layer for a luminous layer with a press roll so as to contact a mirror surface roll, and And a glossy layer forming step including a drying step of drying the coating solution layer.

[Chemical 4]

(Wherein R ¹ and R ² are alkyl or alkenyl groups having 8 to 28 carbon atoms, R ³ and R ′ are H or alkyl groups having 1 to 4 carbon atoms, Xl¾F_, Cl ^_ , Br-, or厂 Indicates 厂 [Chemical 5]

(Wherein, R ^5, R. and R ⁷ is an alkyl group or Aruke of 8 to 28 carbon atoms - le group, R ⁸ is H or an alkyl group having 1 to 4 carbon atoms, Xl¾F_, Cl ^_, Br-, or厂 Indicates 厂

[Chemical 6] r,

R ¹⁰ +

R N-R X 3)

R

 No

(In the formula, R ⁹ , R ¹⁰ , ¹ and R ¹² are alkyl groups or alkyl groups having 8 to 28 carbon atoms, and X— represents F 1, Cl_, Br—, or I—.) [6] The release agent represented by the general formula (1) to the general formula (3) is dicocoyl dimethyl ammonium-um chloride, didecyl dimethyl ammonium-um chloride, dilauryl dimethyl ammonium-um chloride, distearyl dimethyl ammonium. 6. The method for producing an ink jet recording material according to claim 5, wherein the method is at least one selected from -um chloride and dioleyl dimethyl ammonium -um chloride.

 [7] A coating solution for a mirror finish layer containing at least one of the compounds represented by the following general formulas (1) to (3) as a release agent.

 [Chemical 7]

(Wherein R ¹ and R ² are alkyl or alkenyl groups having 8 to 28 carbon atoms, R ³ and R ′ are H or alkyl groups having 1 to 4 carbon atoms, X— is F—, Cl_, Br ― Or I—)) [Chemical 8] r,

 R +

R ⁵ — N— R ⁷ X (2)

R

 V

(Wherein R ⁵ , R. and R ⁷ are alkyl or alkenyl groups having 8 to 28 carbon atoms, R ⁸ is H or an alkyl group having 1 to 4 carbon atoms, X— is F—, Cl_, Br -Or I--

[Chemical 9]

(In the formula, R ⁹ , R ¹⁰ , ¹ and R ¹² each represent an alkyl group or a alkenyl group having 8 to 28 carbon atoms, F 1, Cl_, Br—, or I—.)

[8] The coating liquid according to claim 7, wherein the coating liquid for the mirror finish layer is a coating liquid that is pressed against the mirror roll.

 [9] forming at least one ink receiving layer on the support;

 A coating process in which a coating liquid layer for a glossy layer containing a fine pigment and a release agent is formed on the ink receiving layer, and the coating liquid layer for the glossy layer is pressed with a press roll so as to be in contact with a mirror roll. A gloss layer forming step having a pressing step;

 Prior to the gloss layer forming step, the surface of the mirror roll is wiped up with a wiping agent in advance,

 The wiping agent is a compound represented by any one of the following general formulas (1) to (4), and the release agent during the application for the glossy layer is represented by the following general formulas (1) to (3). A method for producing an ink jet recording material, wherein the compound is represented by a deviation.

 [Chemical 10]

(Wherein R ¹ and R ² are alkyl or alkenyl groups having 8 to 28 carbon atoms, R ³ and R ′ are H or alkyl groups having 1 to 4 carbon atoms, Xl¾F_, Cl ^_ , Br-, or厂 Indicates 厂

[Chemical 11]

(Wherein, R ^5, R. and R ⁷ is an alkyl group or Aruke of 8 to 28 carbon atoms - le group, R ⁸ is H or an alkyl group having 1 to 4 carbon atoms, Xl¾F_, Cl ^_, Br-, or厂 Indicates 厂

[Chemical 12]

(In the formula, R ⁹ , R ¹⁰ , ¹ and R ¹² represent an alkyl group or a alkenyl group having 8 to 28 carbon atoms, ΧΊ F1, Cl ^_ , Br-, or 厂.)

[Chemical 13]

(Wherein R ″ represents an alkyl group having 8 to 28 carbon atoms or a alkenyl group, R ^M , R ¹⁵ , R ^ ¾H or an alkyl group having 1 to 4 carbon atoms, which may be the same, However, it may be different ヽ o or ΧΊ or F_, C 厂, Br ", or 厂.)

10. The method for producing an ink jet recording material according to claim 9, wherein in the pressing step, the glossy layer is peeled off with a mirror roll force while the glossy layer is in a wet or semi-dry state.

 [11] The method for producing an ink jet recording material according to [9] or [10], wherein the support is a non-permeable support or a low-permeable support.

[12] The method for producing a recording material according to any one of [9] to [11], wherein the releasing agent and the wiping agent are the same compound.