JP2010076254A - Inkjet recording sheet for non-aqueous ink - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inkjet recording sheet for non-aqueous ink of which the printed image clearness, the strike through property, and the ink absorbency are favorable wherein stain caused by a roller does is not generated, and also which is excellent in sheet carrying property. <P>SOLUTION: In the inkjet recording sheet for non-aqueous ink, an ink accepting layer which is formed on a supporting body has a white inorganic pigment and a binder as major components. The white inorganic pigment is composed of synthetic amorphous silica, an aluminum hydroxide and talc. The binder is composed of a polyvinyl alcohol and ethylene vinyl acetate. The mixing proportion of the synthetic amorphous silica and the aluminum hydroxide is 100:5 to 100:20. The average particle diameter of the synthetic amorphous silica is 5.0 to 10.0 μm. A mixing proportion with respect to the total of the synthetic amorphous silica and the aluminum hydroxide, and the talc is 100:20 to 100:50. The mixing proportion with respect to the white inorganic pigment and the ethylene vinyl acetate is 100:7 to 100:25. The dry single surface application amount for the ink accepting layer is 3 to 10 g/m<SP>2</SP>. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an ink jet recording sheet for recording mainly using non-aqueous (oil-based) ink. More specifically, the printed image has excellent sharpness, the ink has a slight back-through on the back side of the sheet (good through-hole suitability), the ink is well absorbed, and occurs during high-speed continuous sheet conveyance in an inkjet printer. The present invention relates to an ink jet recording sheet for non-aqueous ink that is free from contamination by a roller and does not cause double feeding, paper jam, and paper peeling from a cut cut at the time of high-speed continuous sheet conveyance.

  The ink jet recording system is used in various printers that have low noise, do not require processes such as development and fixing, and can easily perform full color recording, and has been rapidly spreading in recent years. In particular, as a recording method for facsimiles and various printers in recent years due to the advantages that a color image is formed by a digital camera or computer, maintenance of the device is easy, and generation of driving sound and recording sound is very low. It's being used.

  In general, water-based dye inks are often used in personal ink jet printers, and a coating layer for improving color development in order to make the output image of water-based dye inks of this personal ink jet printer clearer. In many cases, a so-called coated paper provided with the above is used. In the output of coated paper with water-based dye ink, a technique for improving image clarity has been almost established. This coat layer (ink receiving layer) is not only an organic binder for adhering the white inorganic pigment and the white inorganic pigment on the support, but also the aqueous dye ink is anionic, so that the ink is fixed. In addition, it is often composed of three components added with a cationic dye fixing agent (see, for example, Patent Document 1 or 2). To explain further, since the dye molecule has a negative charge in the dye ink, it is caused by ionic bonds with a positively charged cationic polymer that is a cationic dye fixing agent added to the ink receiving layer. It is a common mechanism to fix.

  Furthermore, recently, the demand for increasing the speed of the ink jet recording system is rapidly increasing. However, when high-speed printing is performed with a conventional glycol-based solvent and a water-based ink prepared by dissolving a water-soluble dye such as an acid dye, a direct dye, or a basic dye in water, the inkjet recording sheet is supported. If the body is paper, the printing part will absorb water and expand, causing paper jams inside the printer and contact with the printer head, etc. This deteriorates the accuracy of the relative positional relationship between the print head and the recording medium in the printer, causing undesired phenomena such as a reduction in the dimensional accuracy of the resulting drawing or the occurrence of unevenness in the image.

  In order to solve such a problem, it has been proposed to use a non-aqueous ink prepared by dissolving or dispersing a colorant in a non-aqueous solvent such as isoparaffinic hydrocarbon (for example, Patent Documents 3, 4, and 5). Or see 6.) According to these proposals, it is possible to perform ink jet recording without any expansion of the recording medium, high dimensional accuracy, and no unevenness in the image. Furthermore, due to the low viscosity and low surface tension that are the characteristics of non-aqueous solvents, it is possible to perform ink jet recording at a very high speed as compared with ink jet recording using aqueous ink.

  Since high-speed ink jet recording is possible with non-aqueous inks, it takes a long time to output with a personal ink jet printer such as a printed matter with a relatively small number of copies or a promotional POP for offset printing. In many cases, a high-speed ink jet printer (ORPHIS HC5500 manufactured by Riso Kagaku Kogyo Co., Ltd.) that uses non-aqueous ink and is mainly used for business purposes is used.

  When used as a printed matter that replaces offset printing or as a POP for advertising, the output image must be so eye-catching. Further, when the printed matter replaces the offset printing, it is conceivable that an image is provided on both sides. Therefore, there is no commercial value if the ink component of the image provided on one side penetrates through (opposites through) the opposite side. Even in offset printing that is generally performed, a printed layer is often provided on a printing paper so that the printed image is clear and the ink-inking property is improved.

  Even when printing with a high-speed inkjet printer that uses non-aqueous ink, because of the high cost of paper and the occurrence of paper dust, plain paper type inkjet recording paper with good image clarity and suppressed ink back-through It has been proposed (see, for example, Patent Document 7).

  In addition, a double-sided ink jet recording paper has been proposed that has good print quality and excellent printer transportability in a wide range of environments when printing is performed with a high-speed ink jet printer (see, for example, Patent Document 8). .)

  It has been proposed to use polyvinyl alcohol and ethylene vinyl acetate to increase the surface strength of the coating layer when performing offset printing (see, for example, Patent Document 9).

  In addition, an ink jet recording sheet has been proposed in which a “slip layer” made of polyethylene wax or the like is provided on the ink receiving layer on the surface of the sheet (see, for example, Patent Document 10).

JP-A-9-86032 Japanese Patent Laid-Open No. 9-234947 Japanese Patent Laid-Open No. 57-10660 Japanese Patent Laid-Open No. 57-10661 JP-A-5-202324 JP-A-5-331397 JP 2005-193660 A JP 2007-83681 A JP 2002-127487 A JP 2002-172853 A

  However, although there is a proposal in Patent Document 7, since a large amount of ink is required to obtain a vivid image such as an offset printed matter or a promotional POP, a plain paper type can be sufficiently satisfied. I can't. Therefore, even when printing with a high-speed ink jet printer using non-aqueous ink, it is possible to obtain vivid images such as offset printed matter and advertising POP, and research on coated paper type ink jet recording paper without back-through Has been done.

  When printing with non-aqueous ink, the ink fixing mechanism is different from that of water-based dye ink. That is, when printing with an ink jet printer using an ink of a type in which a pigment is dispersed with a non-aqueous ink, an inorganic pigment used for the ink receiving layer of the recording sheet, not a fixing mechanism based on ionic bonds utilizing ionicity. Fixability varies depending on the type and mixing ratio. Further, the fixability varies depending on the type of binder used and the mixing ratio thereof. In addition, when non-aqueous ink is used, ink permeates into the paper faster than water-based ink, which adversely affects the ability of ink to pass through. For this reason, satisfactory results cannot be obtained with the conventional technique of outputting with a personal ink jet printer using aqueous dye ink.

  Furthermore, the greatest advantage of an ink jet printer using non-aqueous ink is that high-speed output is possible. In the above-described inkjet printer ORPHIS HC5500 using non-aqueous ink manufactured by Riso Kagaku Co., Ltd., for example, full-color A4 paper can be printed at a high speed of about 100 sheets / minute (80 to 150 sheets / minute) on one side. When printing is conveyed at high speed in this way, the conveyance property is a very important factor. If the recording sheets are conveyed to the recording unit without being conveyed to the printing unit one by one, the recording head comes into contact with the sheet, printing failure, paper jam, breakage of the recording head, There is a possibility of causing a printer failure. In addition, in order to increase the added value of the output by non-aqueous ink jet printing, a finisher (HC finisher system manufactured by Riso Kagaku Kogyo Co., Ltd.) that performs finishing processing such as stapling, punching, cover attachment, paper folding, etc. after printing is often used. . Therefore, if the ink absorption performance that can withstand high-speed transport is not provided, the transport path of the printer and finisher from printing to paper discharge will be soiled, and ink transfer will be performed not only on the printer and finisher but also on the output image. Adverse effects such as roller dirt.

This is not only the problem when transporting at high speed, but when transporting the sheet from the paper feeding unit to the printing unit, the sheets are picked up one by one by a pick-up roll. the amount is large such as ^{(100g / m 2 ~200g / m} 2) when a paper, a phenomenon called picking paper from cutting surface of the sheet and at the pick-up roller is generated. This peeling off of the paper occurs from the interface between the base paper and the coating layer, not only deteriorating the quality of the printed matter, but in severe cases, the peeling of the paper may reach the printed image portion. Since printing with a conventional personal ink jet printer using water-based ink has a printing speed of several sheets per minute, such a problem of peeling of paper does not occur.

  The transportability of the inkjet recording sheet must be taken from a completely different perspective than the part related to image formation, such as the sharpness of the printed image. If emphasis is placed only on the transportability of the inkjet recording sheet, non-aqueous ink is used. In the ink jet recording, the ink fixing, the image sharpness, the ink penetration property or the ink absorbability are adversely affected. It is very difficult to combine the characteristics of non-aqueous inks that do not impair ink fixing, image sharpness, ink penetration and ink absorbability, and are excellent in high-speed transportability.

  Further, the above-described inkjet printer ORPHIS HC5500 using non-aqueous ink manufactured by Riso Kagaku Kogyo Co., Ltd. is capable of continuous automatic duplex printing at a high speed (for example, A4 full color, about 50 sheets / min on both sides). In order to demonstrate the performance of such a printer, an ink receiving layer is provided on both sides, and both sides are excellent in image sharpness and ink absorbability, have good ink back-through suitability, and high-speed transportability. An excellent ink jet recording sheet is desired.

  Although there is a proposal of Patent Document 8, the paper deformation behavior in a wide range of environments is not only an element necessary for high-speed ink jet printers, but also an element necessary for all papers used in printers and copiers. It is thought that there are other important factors to complete the continuous conveyance of the ink jet printer. Even when filing an image or document data printed by an ink jet printer, printing on both sides is not bulky and is effective in terms of space. Also, when printing advertisements and promotional POPs, it can be said that the appeal is higher when printed on both sides.

  However, when the ink receiving layer containing inorganic pigment particles is provided on both sides, there is a problem that the high-speed conveyance property of the recording sheet is further deteriorated as compared with the case where the ink receiving layer is provided on one side.

  In view of the above situation, the object of the present invention is (1) printing with a non-aqueous ink in an ink jet recording sheet and excellent print image sharpness, and (2) ink penetration on the back side of the sheet. Is small, and there is no sense of incongruity in double-sided printing. (3) Excellent ink absorbability of non-aqueous ink, and there is no occurrence of stains due to rollers generated during high-speed continuous sheet conveyance in an inkjet printer using non-aqueous ink. That is, (4) It is to provide four elements that are excellent in sheet conveyance at the time of high-speed continuous sheet conveyance in an inkjet printer using non-aqueous ink.

As a result of diligent research to improve the above-described problems of the prior art, the present inventors have selected the types of white inorganic pigments to be contained in the ink receiving layer and the particle diameters thereof, and binders used as binders. In addition, the present inventors have found that the above four elements are connected by setting the amount of the ink-receiving layer including the white inorganic pigment and the binder and completing the present invention. That is, the inkjet recording sheet for non-aqueous ink according to the present invention is a non-aqueous ink composed of a solvent, a dispersant, and a pigment, in which an ink receiving layer having one or more layers is provided on at least one surface of a support. In the corresponding ink jet recording sheet, the ink receiving layer is mainly composed of a white inorganic pigment and a binder, and the white inorganic pigment is composed of synthetic amorphous silica, aluminum hydroxide and talc, and the binder includes polyvinyl alcohol and ethylene acetate. The synthetic amorphous silica and the aluminum hydroxide have a blending mass ratio of 100: 5 to 100: 20, and the synthetic amorphous silica has an average particle size of 5.0 to 10. The blending mass ratio of the total of the synthetic amorphous silica and the aluminum hydroxide and the talc is 100 μm. 20 to 100: a 50, mixing mass ratio of the ethylene-vinyl acetate and the white inorganic pigment is 100: 7-100: a 25, the ink-receiving dry coating amount per one side of the layer 3 to 10 g / ^{m 2} It is characterized by being.

  In the ink jet recording sheet according to the present invention, the aluminum hydroxide preferably has an average particle diameter of 0.3 to 3.0 μm. By setting the average particle diameter in the above range, ink absorbency and image sharpness are improved.

  In the ink jet recording sheet according to the present invention, the talc preferably has an average particle size of 4.0 to 10.0 μm. Ink absorbability and image sharpness can both be achieved satisfactorily. Furthermore, the high-speed continuous sheet conveyance property is also improved.

In the ink jet recording sheet according to the present invention, the support is paper, and
TAPPI Paper Pulp Test Method No. It is preferable that the paper surface pH of the said support body measured by 49-2 "paper and paperboard-surface pH test method-2nd part: indicator method" is 6.0-7.5. Ink absorbability and image sharpness can both be achieved satisfactorily.

  In the ink jet recording sheet according to the present invention, two sheets are aligned vertically and horizontally so that the front surface and the back surface face each other, and the static friction coefficient measured by JIS P 8147: 1994 “Friction coefficient test method for paper and paperboard” is 0.4 to 0.4. 0.9 and the coefficient of dynamic friction are preferably 0.2 to 0.6. Excellent sheet transportability during high-speed continuous sheet transport.

  The ink jet recording sheet according to the present invention includes a case where the ink receiving layer is provided on both sides of the support.

  A book having a white inorganic pigment and a binder as main components, wherein the inorganic pigment is made of synthetic amorphous silica, aluminum hydroxide and talc, and the binder has an ink receiving layer made of polyvinyl alcohol and ethylene vinyl acetate. The inkjet recording sheet for non-aqueous inks according to the invention is mixed with white inorganic pigments having different properties, and the white inorganic pigments having different properties are bound by polyvinyl alcohol, so printing with an inkjet printer using non-aqueous inks is possible. It has a characteristic that the image has excellent sharpness, a characteristic that the ink show-through is very small (approachability for see-through), and a characteristic that the ink absorbability is excellent. Further, since ethylene vinyl acetate is contained in the ink receiving layer, it has the characteristics of improving the adhesion between the base paper and the ink receiving layer and preventing paper peeling that occurs during high-speed conveyance. Furthermore, since talc is contained in the white inorganic pigment, sufficient slipperiness can be obtained and high-speed transportability is excellent.

  Next, the present invention will be described in detail with reference to embodiments, but the present invention is not construed as being limited to these descriptions. In addition, the embodiment may be modified as long as the effects of the invention are achieved.

  The ink jet recording sheet according to the present invention is an ink jet recording sheet corresponding to a non-aqueous ink in which an ink receiving layer having one or more layers is provided on at least one surface of a support.

  Non-aqueous inks generally comprise a solvent, a dispersant, and a pigment. The ink jet recording sheet of the present invention corresponds to a non-aqueous ink for an ink jet recording method.

  The material of the support is not particularly limited, and examples thereof include paper, coated paper, synthetic paper, non-woven fabric, or a plastic film or sheet. Paper is preferred from the standpoint of strength and practical use. In the present invention, the support is preferably a base paper mainly composed of natural pulp. A base paper mainly composed of natural pulp is a base paper obtained by making a paper containing 50% by weight or more of natural pulp by making it in one layer or two or more layers. As natural pulp, wood bleached chemical pulp such as N-BKP (conifer bleached kraft pulp), L-BKP (hardwood bleached kraft pulp) is mainly used. If necessary, mechanical pulp such as GP (crushed wood pulp), TMP (thermomechanical pulp), BCTMP (chemical thermomechanical pulp), and non-wood pulp such as bamboo, kenaf, hemp, etc. may be appropriately blended. it can. The beating degree is not particularly limited. Further, various additives such as a neutral rosin sizing agent, a wet paper strength agent, and a filler may be added as appropriate. Moreover, the paper which pulped and mixed the used paper can also be used as a support body. The blending ratio is not particularly limited. Further, the support was made of JAPAN TAPPI Paper Pulp Test Method No. 49-2 “Paper and paperboard—Surface pH test method—Part 2: Indicator method” The paper surface pH of the support is preferably 6.0 to 7.5, more preferably 6.0 to 7.0. It is more preferable that When the paper surface pH is lower than 6.0, the ink absorbability is deteriorated, and when it is higher than 7.5, the image sharpness is deteriorated.

  The ink receiving layer contains a white inorganic pigment and a binder as main components, the white inorganic pigment is made of synthetic amorphous silica, aluminum hydroxide and talc, and the binder is made of polyvinyl alcohol and ethylene vinyl acetate. By providing an ink-receiving layer in which synthetic amorphous silica, aluminum hydroxide and talc with different properties are bound with polyvinyl alcohol, the sharpness of the printed image with non-aqueous ink and the back-through of the ink are minute. Is realized. Further, by including ethylene vinyl acetate in the ink receiving layer, the adhesion between the base paper and the ink receiving layer is improved, and the occurrence of paper peeling during high-speed conveyance is realized. Patent Document 9 proposes the use of polyvinyl alcohol and ethylene vinyl acetate in order to increase the coating layer surface strength when performing offset printing. However, the use of ethylene vinyl acetate in the present invention does not find its property in obtaining the surface strength of the coating layer that can withstand offset printing, but improves the adhesion at the interface between the base paper and the coating layer. Paying attention to this, it takes advantage of the property of preventing the paper from being peeled off from the interface between the base paper and the coating layer during high-speed conveyance of the inkjet recording sheet.

  Here, the blending mass ratio of the synthetic amorphous silica and aluminum hydroxide is preferably 100: 5 to 100: 20, more preferably 100: 10 to 100: 20, still more preferably 100: 10. 100: 15. When the ratio of aluminum hydroxide is less than 100: 5, the ink absorbency is good, but the image sharpness is deteriorated and the ink showthrough suitability is also deteriorated. When the ratio of aluminum hydroxide is larger than 100: 20, the image sharpness is good and the ink is well-exposed, but the ink absorptivity is deteriorated and there is a possibility that the transport path in the printer is soiled.

  The average particle size of the synthetic amorphous silica is preferably 5.0 to 10.0 μm, more preferably 6.0 to 9.0 μm, and still more preferably 6.5 to 8.0 μm. Here, in the present invention, the average particle diameter of the white inorganic pigment is measured by a scattering laser light diffraction method (Leeds + Northrup) manufactured by Microtrac. When the average particle size of the synthetic amorphous silica is smaller than 5.0 μm, the ink has good penetration through properties, but the ink absorbability deteriorates. When the average particle size is larger than 10.0 μm, the image clarity and the ink are improved. The suitability of see-through deteriorates.

  Furthermore, by including talc in the white inorganic pigment, “slipperiness” is developed in the sheet, and the sheet transportability during high-speed continuous sheet transport is improved. Patent Document 10 proposes an ink jet recording sheet in which a “sliding layer” made of polyethylene wax or the like is provided on an ink receiving layer on the surface of the sheet, but has a two-layer structure of an ink receiving layer and a sliding layer. Therefore, two manufacturing steps are required. In the present invention, since the ink receiving layer is also provided with slipperiness, the printing property and the sheet conveyance property at the time of high-speed continuous sheet conveyance are obtained even in a single-layer structure, so that it can be manufactured in one step. This is also advantageous in terms of cost. In addition, talc is mixed in a range that does not impair the printability obtained by other white inorganic pigments, that is, synthetic amorphous silica and aluminum hydroxide, that is, the image sharpness, the ink penetration ability, and the ink absorption. Is possible. Here, the blending mass ratio of the total of synthetic amorphous silica and aluminum hydroxide and talc is preferably 100: 20 to 100: 50, more preferably 100: 30 to 100: 40, and still more preferably. 100: 30 to 100: 35. If the ratio of talc is less than 100: 20, the coefficient of friction increases and the sheet transportability at the time of high-speed continuous sheet transport deteriorates, so multiple feeds and paper jams occur frequently. When the ratio of talc is larger than 100: 50, the coefficient of friction is too low, so that the sheet alignment after sheet conveyance during high-speed continuous sheet conveyance deteriorates. Further, when the ratio of talc is increased from 100: 50, the image sharpness starts to be affected and the printability is deteriorated.

  The blending mass ratio of the white inorganic pigment composed of synthetic amorphous silica, aluminum hydroxide and talc and ethylene vinyl acetate is preferably 100: 7 to 100: 25, more preferably 100: 10 to 100: 20, More preferably, it is 100: 13-100: 17. When there is less ethylene vinyl acetate than 100: 7, the ink absorbency is good, but the adhesion between the base paper and the ink receiving layer decreases, and the paper peels off from the interface between the base paper and the ink receiving layer during high-speed transport with a printer appear. When the amount of ethylene vinyl acetate is larger than 100: 25, the adhesion between the base paper and the ink receiving layer is improved, and there is no paper peeling, but the ink absorbability deteriorates and the transport path in the printer is soiled. End up.

The dry coating amount of the ink receiving layer is preferably ³ to 10 g / m ² , more preferably 4 to 7 g / m ² , and still more preferably 4.5 to 6.5 g / m ² . When the dry coating amount of the ink receiving layer is less than 3 g / m ² , the ink absorbability deteriorates, and the ink breakthrough suitability also deteriorates. When the amount is more than 10 g / m ² , the ink has good penetrability but the image sharpness deteriorates.

  The average particle diameter of aluminum hydroxide is preferably 0.3 to 3.0 μm, more preferably 0.5 to 1.5 μm, and still more preferably 0.7 to 1.2 μm. If the average particle diameter of aluminum hydroxide is smaller than 0.3 μm, it is considered that fine powder of aluminum hydroxide enters into the pores of the synthetic amorphous silica, so that the ink absorbability may deteriorate. On the other hand, if it exceeds 3.0 μm, aluminum hydroxide is present at a particle level similar to that of synthetic amorphous silica, so it is considered that the printing performance of aluminum hydroxide itself appears, and image clarity may deteriorate. is there.

  By mixing a synthetic amorphous silica with a large particle size and aluminum hydroxide with a small particle size and using it in the ink-receiving layer, the aluminum hydroxide enters the gaps between the particles of the synthetic amorphous silica in a balanced manner. Therefore, the speed at which the non-aqueous ink enters the gap between the particles of the synthetic amorphous silica is controlled by the aluminum hydroxide particles and stays slightly near the surface, so the fixing property and color density of the non-aqueous ink are good. In addition, the ink has an effect on the ability to pass through the ink, and the ink absorbability is also good. In the absence of aluminum hydroxide, the ink absorption of the non-aqueous ink is very fast, but the color developability is inferior and the ink's ability to show through is also deteriorated.

  The average particle diameter of talc is preferably 4.0 to 10.0 μm, more preferably 5.0 to 8.0 μm, and still more preferably 5.0 to 7.0 μm. Since the talc particles have a particle size larger than the pores of the synthetic amorphous silica, fine particles of talc do not enter the pores, and the ink absorbability is not adversely affected. In addition, talc particles have a particle size similar to that of synthetic amorphous silica but have a plate shape. Therefore, unless the abundance is higher than that of synthetic amorphous silica, synthetic amorphous silica and water are used. It does not adversely affect the gap between particles with aluminum oxide. When the average particle size of talc is smaller than 4.0 μm, the particle size becomes smaller than that of synthetic amorphous silica, so that talc particles do not exist on the paper surface and it becomes difficult to obtain a sliding effect peculiar to talc. On the other hand, if it exceeds 10 μm, it becomes larger than the synthetic amorphous silica particles, so that the slipperiness of the paper surface is sufficient, but it may adversely affect the fixability and color developability of the non-aqueous ink.

  In the inkjet recording sheet according to the present invention having the above-described configuration, the two sheets are aligned vertically and horizontally so that the front surface and the back surface face each other, and the static friction coefficient measured by JIS P 8147: 1994 “Friction coefficient test method for paper and paperboard” is 0. .4 to 0.9 and the dynamic friction coefficient is 0.2 to 0.6. More preferably, the static friction coefficient is 0.5 to 0.8, and the dynamic friction coefficient is 0.3 to 0.5. Even when several hundred sheets or more are set in the sheet feeding unit of an inkjet printer using non-aqueous ink and high-speed continuous printing is performed, the inkjet recording sheets do not overlap and are not conveyed to the recording unit of the printer. Each sheet can be smoothly conveyed from paper to paper discharge.

  The ink jet recording sheet according to the present invention includes a case where the ink receiving layer is provided on both sides of the support. Even in this case, both sides are excellent in the sharpness of a printed image in printing with a non-aqueous ink, excellent in ink penetration and ink absorbability, and excellent in high-speed transportability in an inkjet printer using non-aqueous ink.

  In the present invention, the method for providing the ink receiving layer may be either an on-machine coater or an off-machine coater. For example, various devices such as conventionally known air knife coaters, curtain coaters, die coaters, blade coaters, gate roll coaters, bar coaters, rod coaters, bill blade coaters, short dwell blade coaters, size presses, etc. can be turned on or off machine. Can be used. Among them, in the present invention, coating with an air knife coater or a bar coater is superior in coating stability and in surface quality. Moreover, after coating, it is possible to finish using a calendar device such as a machine calendar, a super calendar, or a soft calendar.

  In the present invention, the ink receiving layer is not limited to a single layer configuration, but may be a two-layer configuration or a configuration with three or more layers.

  Next, although an example is given and explained in detail, the contents of the present invention are not limited to the example. In addition, a part and% show the mass part and mass% in conversion of solid content.

Example 1
[Support]
Calcium carbonate (Tama Pearl TP-121: manufactured by Okutama Kogyo Co., Ltd.) 5%, cationized starch (Kate 308: manufactured by Nippon NSC Co., Ltd.) 0.8% with respect to 100% of absolute dry pulp in pulp slurry made of hardwood bleached kraft pulp , a neutral rosin sizing agent (NT-85: manufactured by Arakawa chemical Industries, Ltd.) was paper in 0.4% of the formulation, basis weight 81.4 g / ^{m 2} base paper as a support (JAPAN TAPPI paper pulp test method No.49- Paper surface pH 6.2) measured in 2 was made.
[Coating of ink receiving layer]
As a white inorganic pigment, 100 parts of synthetic amorphous silica (Mizukasil P-78A, average particle size 6.5 μm: manufactured by Mizusawa Chemical Co., Ltd.), aluminum hydroxide (Hijilite H-42M, average particle size 1.0 μm: Showa) 10 parts by electric industry), 33 parts by weight of talc (LMS-100, average particle size 6.0 μm: manufactured by Fuji Talc) and water were added, and the mixing ratio of synthetic amorphous silica and aluminum hydroxide was 100: 10. The mixing ratio of the mixture of synthetic amorphous silica and aluminum hydroxide and talc (mass ratio, hereinafter, “mixing ratio” is the mass ratio) is set to 100: 30, and the solid content concentration is set by a cowless disperser. A 22% white inorganic pigment slurry was prepared. To this pigment slurry, 12 parts of polyvinyl alcohol (PVA-235: manufactured by Kuraray Co., Ltd.), 21.5 parts of ethylene vinyl acetate (Polysol EVA AD-10: manufactured by Showa Polymer Co., Ltd.) and water are added as a binder. The content ratio of the pigment and ethylene vinyl acetate was 100: 15, and these were mixed to obtain an ink receiving layer coating solution. The ink receiving layer coating liquid was applied and dried on one side of a support (base paper) with an air knife coater so as to have a dry coating amount of 5 g / m ² to obtain an inkjet recording sheet for non-aqueous ink.

(Example 2)
In Example 1, a non-aqueous system was used in the same manner as in Example 1 except that the synthetic amorphous silica contained in the ink receiving layer was replaced with “Syloid 74X5500, average particle size 9.0 μm: manufactured by Grace Devison”. An ink jet recording sheet for ink was obtained.

(Example 3)
In Example 1, 100 parts of synthetic amorphous silica (Mizukasil P-78A, average particle size 6.5 μm: made by Mizusawa Chemical Co., Ltd.) contained in the ink receiving layer, aluminum hydroxide (Hydelite H-42M, average) Particle size 1.0 μm: Showa Denko Co., Ltd. 5 parts, talc (LMS-100, average particle size 6.0 μm: Fuji Talc Co., Ltd.) 31.5 parts and water are added, and synthetic amorphous silica and aluminum hydroxide are added. A white inorganic pigment slurry having a solid content concentration of 22% with a Cowles disperser was set at a mixing ratio of 100: 5 with a mixture of synthetic amorphous silica and aluminum hydroxide and a mixing ratio of talc of 100: 30. In this pigment slurry, 11.5 parts of polyvinyl alcohol (PVA-235: manufactured by Kuraray Co., Ltd.) and ethylene vinyl acetate (Polysol EVA AD-10: manufactured by Showa Polymer Co., Ltd.) An ink jet recording sheet for non-aqueous ink was obtained in the same manner as in Example 1 except that 20.5 parts and water were added and the content ratio of the all-white inorganic pigment and ethylene vinyl acetate was 100: 15.

Example 4
In Example 1, 100 parts of synthetic amorphous silica (Mizukasil P-78A, average particle size 6.5 μm: made by Mizusawa Chemical Co., Ltd.) contained in the ink receiving layer, aluminum hydroxide (Hydelite H-42M, average) Particle size 1.0 μm: Showa Denko Co., Ltd.) 20 parts, talc (LMS-100, average particle size 6.0 μm: Fuji Talc Co., Ltd.) 36 parts and water are added, and synthetic amorphous silica and aluminum hydroxide are added. A white inorganic pigment slurry having a solid content concentration of 22% was prepared with a Cowles disperser with a mixing ratio of 100: 20, a mixture ratio of a mixture of synthetic amorphous silica and aluminum hydroxide and talc of 100: 30. In this pigment slurry, 13 parts of polyvinyl alcohol (PVA-235: manufactured by Kuraray Co., Ltd.) and ethylene vinyl acetate (Polysol EVA AD-10: manufactured by Showa Polymer Co., Ltd.) 23 .4 parts and water were added, and an ink jet recording sheet for non-aqueous ink was obtained in the same manner as in Example 1 except that the content ratio of the all-white inorganic pigment and ethylene vinyl acetate was 100: 15.

(Example 5)
In Example 1, the content of talc (LMS-100, average particle size 6.0 μm: manufactured by Fuji Talc Co., Ltd.) is 22 parts, and a mixture of synthetic amorphous silica and aluminum hydroxide is mixed with talc. A white inorganic pigment slurry having a solid content concentration of 22% was prepared with a Cowles disperser at a ratio of 100: 20, and 11 parts of polyvinyl alcohol (PVA-235: manufactured by Kuraray) and ethylene vinyl acetate (Polysol EVA) were prepared. (AD-10: Showa Polymer Co., Ltd.) 19.8 parts and water were added, and the non-aqueous system was the same as in Example 1 except that the content ratio of the all-white inorganic pigment and ethylene vinyl acetate was 100: 15. An ink jet recording sheet for ink was obtained.

(Example 6)
In Example 1, the content of talc (LMS-100, average particle size 6.0 μm: manufactured by Fuji Talc Co., Ltd.) was 55 parts, and a mixture of synthetic amorphous silica and aluminum hydroxide was mixed with talc. A white inorganic pigment slurry having a solid content concentration of 22% was prepared with a Cowles disperser at a ratio of 100: 50, and 13.8 parts of polyvinyl alcohol (PVA-235: manufactured by Kuraray Co., Ltd.) and ethylene vinyl acetate ( Polysol EVA AD-10 (manufactured by Showa Polymer Co., Ltd.) 24.7 parts and water were added in the same manner as in Example 1 except that the content ratio of the all-white inorganic pigment and ethylene vinyl acetate was 100: 15. An ink jet recording sheet for non-aqueous ink was obtained.

(Example 7)
In Example 1, except that the content of ethylene vinyl acetate (Polysol EVA AD-10: Showa Polymer Co., Ltd.) was 10 parts and the content ratio of the all-white inorganic pigment and ethylene vinyl acetate was 100: 7. In the same manner as in Example 1, an ink jet recording sheet for non-aqueous ink was obtained.

(Example 8)
In Example 1, except that the content of ethylene vinyl acetate (Polysol EVA AD-10: Showa Polymer Co., Ltd.) was 36 parts and the content ratio of all white inorganic pigment and ethylene vinyl acetate was 100: 25. In the same manner as in Example 1, an ink jet recording sheet for non-aqueous ink was obtained.

Example 9
In Example 1, an ink jet recording sheet for non-aqueous ink was obtained in the same manner as in Example 1 except that the dry coating amount of the ink receiving layer was 3 g / m ² .

(Example 10)
In Example 1, an ink jet recording sheet for non-aqueous ink was obtained by the same method as Example 1 except that the dry coating amount of the ink receiving layer was 10 g / m ² .

(Example 11)
In Example 1, with respect to aluminum hydroxide contained in the ink receiving layer, Hijilite H-42M (average particle size: 1.0 μm, manufactured by Showa Denko KK) used in Example 1 was replaced with a sand mill (DYNO-MILL: Shinmaru). An ink jet recording sheet for non-aqueous ink was obtained in the same manner as in Example 1, except that the average particle size was changed to 0.3 μm.

Example 12
In Example 1, with respect to aluminum hydroxide contained in the ink receiving layer, Hygielite H-32 (average particle size 8.0 μm: manufactured by Showa Denko KK) was applied to a sand mill (DYNO-MILL: manufactured by Shinmaru Enterprises). An ink jet recording sheet for non-aqueous ink was obtained in the same manner as in Example 1, except that the average particle size was replaced with 3.0 μm.

(Example 13)
In Example 1, for talc contained in the ink receiving layer, LMS-100 (average particle size 6.0 μm: manufactured by Fuji Talc) was pulverized with a sand mill (DYNO-MILL: manufactured by Shinmaru Enterprises). An inkjet recording sheet for non-aqueous ink was obtained in the same manner as in Example 1 except that the average particle size was replaced with 4.0 μm.

(Example 14)
In Example 1, with respect to talc contained in the ink receiving layer, LMP (average particle diameter: 16.0 μm: manufactured by Fuji Talc) was pulverized with a sand mill (DYNO-MILL: manufactured by Shinmaru Enterprises Co., Ltd.) to obtain average particles. An ink jet recording sheet for non-aqueous ink was obtained in the same manner as in Example 1 except that the diameter was replaced with 10.0 μm.

(Example 15)
The ink receiving layer in Example 1 was applied to both sides of the support and dried to obtain an inkjet recording sheet for non-aqueous ink.

(Example 16)
The ink receiving layer in Example 2 was applied to both sides of the support and dried to obtain an inkjet recording sheet for non-aqueous ink.

(Example 17)
The ink receiving layer in Example 3 was applied on both sides of the support and dried to obtain an inkjet recording sheet for non-aqueous ink.

(Example 18)
The ink receiving layer in Example 4 was applied to both sides of the support and dried to obtain an inkjet recording sheet for non-aqueous ink.

(Example 19)
The ink receiving layer in Example 5 was applied to both sides of the support and dried to obtain an inkjet recording sheet for non-aqueous ink.

(Example 20)
The ink receiving layer in Example 6 was applied to both sides of the support and dried to obtain an inkjet recording sheet for non-aqueous ink.

(Example 21)
The ink receiving layer in Example 7 was applied to both sides of the support and dried to obtain an inkjet recording sheet for non-aqueous ink.

(Example 22)
The ink receiving layer in Example 8 was applied to both sides of the support and dried to obtain an inkjet recording sheet for non-aqueous ink.

(Example 23)
The ink receiving layer in Example 9 was applied to both sides of the support and dried to obtain an inkjet recording sheet for non-aqueous ink.

(Example 24)
The ink receiving layer in Example 10 was applied to both sides of the support and dried to obtain an inkjet recording sheet for non-aqueous ink.

(Example 25)
The ink receiving layer in Example 11 was applied to both sides of the support and dried to obtain an inkjet recording sheet for non-aqueous ink.

(Example 26)
The ink receiving layer in Example 12 was applied to both sides of the support and dried to obtain an inkjet recording sheet for non-aqueous ink.

(Example 27)
The ink receiving layer in Example 13 was applied to both sides of the support and dried to obtain an inkjet recording sheet for non-aqueous ink.

(Example 28)
The ink receiving layer in Example 14 was applied to both sides of the support and dried to obtain an inkjet recording sheet for non-aqueous ink.

(Example 29)
An ink jet recording sheet for non-aqueous ink was obtained in the same manner as in Example 1, except that the basis weight of the support in Example 1 was replaced with 157 g / m ² .

(Example 30)
An ink jet recording sheet for non-aqueous ink was obtained in the same manner as in Example 2 except that the basis weight of the support in Example 2 was replaced with that of 157 g / m ² .

(Example 31)
An inkjet recording sheet for non-aqueous ink was obtained in the same manner as in Example 3, except that the basis weight of the support in Example 3 was replaced with that of 157 g / m ² .

(Example 32)
But replacing basis weight of the support in Example 4 to that with 157 g / m ^2, to obtain a non-aqueous ink for ink-jet recording sheet in the same manner as in Example 4.

(Example 33)
An ink jet recording sheet for non-aqueous ink was obtained in the same manner as in Example 5 except that the basis weight of the support in Example 5 was replaced with 157 g / m ² .

(Example 34)
An inkjet recording sheet for non-aqueous ink was obtained in the same manner as in Example 6 except that the basis weight of the support in Example 6 was replaced with that of 157 g / m ² .

(Example 35)
An inkjet recording sheet for non-aqueous ink was obtained in the same manner as in Example 7 except that the basis weight of the support in Example 7 was replaced with that of 157 g / m ² .

(Example 36)
An ink jet recording sheet for non-aqueous ink was obtained in the same manner as in Example 8, except that the basis weight of the support in Example 8 was replaced with 157 g / m ² .

(Example 37)
An inkjet recording sheet for non-aqueous ink was obtained in the same manner as in Example 9, except that the basis weight of the support in Example 9 was replaced with that of 157 g / m ² .

(Example 38)
An ink jet recording sheet for non-aqueous ink was obtained in the same manner as in Example 10 except that the basis weight of the support in Example 10 was replaced with 157 g / m ² .

(Example 39)
An inkjet recording sheet for non-aqueous ink was obtained in the same manner as in Example 11 except that the basis weight of the support in Example 11 was replaced with that of 157 g / m ² .

(Example 40)
An ink jet recording sheet for non-aqueous ink was obtained in the same manner as in Example 12, except that the basis weight of the support in Example 12 was replaced with 157 g / m ² .

(Example 41)
An ink jet recording sheet for non-aqueous ink was obtained in the same manner as in Example 13, except that the basis weight of the support in Example 13 was replaced with 157 g / m ² .

(Example 42)
An inkjet recording sheet for non-aqueous ink was obtained in the same manner as in Example 14 except that the basis weight of the support in Example 14 was replaced with that of 157 g / m ² .

(Example 43)
An ink jet recording sheet for non-aqueous ink was obtained in the same manner as in Example 15 except that the basis weight of the support in Example 15 was replaced with 157 g / m ² .

(Example 44)
An ink jet recording sheet for non-aqueous ink was obtained in the same manner as in Example 16, except that the basis weight of the support in Example 16 was replaced with that of 157 g / m ² .

(Example 45)
An ink jet recording sheet for non-aqueous ink was obtained in the same manner as in Example 17 except that the basis weight of the support in Example 17 was replaced with 157 g / m ² .

(Example 46)
But replacing basis weight of the support in Example 18 to those with 157 g / m ^2, to obtain a non-aqueous ink for ink-jet recording sheet in the same manner as in Example 18.

(Example 47)
An ink jet recording sheet for non-aqueous ink was obtained in the same manner as in Example 19 except that the basis weight of the support in Example 19 was replaced with 157 g / m ² .

(Example 48)
But replacing basis weight of the support in Example 20 to those with 157 g / m ^2, to obtain a non-aqueous ink for ink-jet recording sheet in the same manner as in Example 20.

(Example 49)
An inkjet recording sheet for non-aqueous ink was obtained in the same manner as in Example 21, except that the basis weight of the support in Example 21 was replaced with that of 157 g / m ² .

(Example 50)
An ink jet recording sheet for non-aqueous ink was obtained in the same manner as in Example 22 except that the basis weight of the support in Example 22 was replaced with 157 g / m ² .

(Example 51)
An inkjet recording sheet for non-aqueous ink was obtained in the same manner as in Example 23, except that the basis weight of the support in Example 23 was replaced with that of 157 g / m ² .

(Example 52)
But replacing basis weight of the support in Example 24 to those with 157 g / m ^2, to obtain a non-aqueous ink for ink-jet recording sheet in the same manner as in Example 24.

(Example 53)
An ink jet recording sheet for non-aqueous ink was obtained in the same manner as in Example 25, except that the basis weight of the support in Example 25 was replaced with 157 g / m ² .

(Example 54)
An ink jet recording sheet for non-aqueous ink was obtained in the same manner as in Example 26, except that the basis weight of the support in Example 26 was replaced with 157 g / m ² .

(Example 55)
An ink jet recording sheet for non-aqueous ink was obtained in the same manner as in Example 27 except that the basis weight of the support in Example 27 was replaced with that of 157 g / m ² .

(Example 56)
An ink jet recording sheet for non-aqueous ink was obtained in the same manner as in Example 28, except that the basis weight of the support in Example 28 was replaced with 157 g / m ² .

(Example 57)
In Example 1, the ink receiving layer coating solution was applied by a two-layer coating using an air knife coater, the first layer dry coating amount was 3 g / cm ² , and the second layer dry coating amount was 3 g / cm ² , An inkjet recording sheet for non-aqueous ink was obtained in the same manner as in Example 1 except that the total coating amount was 6 g / cm ² .

(Example 58)
In Example 1, the ink receiving layer coating solution was applied by a three-layer coating using an air knife coater. The dry coating amount for the first layer was 3 g / cm ² , the dry coating amount for the second layer was 3 g / cm ² , the dry coating amount of the layer-th and 3 g / cm ^2, except that the total coating amount was 9 g / cm ² to obtain a non-aqueous ink for ink-jet recording sheet in the same manner as in example 1.

(Comparative Example 1)
In Example 1, the same method as in Example 1 except that the synthetic amorphous silica contained in the ink receiving layer was replaced with “Nipgel BY-200, average particle size: 2.7 μm: manufactured by Tosoh Silica Corporation”. Thus, an inkjet recording sheet was obtained.

(Comparative Example 2)
In Example 1, the same method as in Example 1 except that the synthetic amorphous silica contained in the ink receiving layer was replaced with “Silojet P-412, average particle size: 12.0 μm: manufactured by Grace Devison”. Thus, an inkjet recording sheet was obtained.

(Comparative Example 3)
In Example 1, the addition amount of aluminum hydroxide (Hijilite H-42M, average particle size 1.0 μm: Showa Denko KK) contained in the ink receiving layer was 0 part, talc (LMS-100, average particle size). 6.0 [mu] m (produced by Fuji Talc Co., Ltd.) is 30 parts, the mixing ratio of synthetic amorphous silica and aluminum hydroxide is 100: 0, and synthetic amorphous silica and aluminum hydroxide are mixed A white inorganic pigment slurry having a solid content concentration of 22% was prepared with a Cowles disperser at a mixing ratio with talc of 100: 30. To this pigment slurry, 10.9 parts of polyvinyl alcohol (PVA-235: manufactured by Kuraray Co., Ltd.) 19.5 parts of ethylene vinyl acetate (Polysol EVA AD-10: Showa Polymer Co., Ltd.) and water were added, and the content ratio of the all-white inorganic pigment and ethylene vinyl acetate was adjusted to 100: 1 And it was except that, to obtain an ink jet recording sheet in the same manner as in Example 1.

(Comparative Example 4)
In Example 1, the addition amount of aluminum hydroxide (Hijilite H-42M, average particle size 1.0 μm: Showa Denko KK) contained in the ink receiving layer was 30 parts, talc (LMS-100, average particle size). 6.0 μm (made by Fuji Talc Co., Ltd.) is 39 parts, the mixing ratio of synthetic amorphous silica and aluminum hydroxide is 100: 30, and the mixture of synthetic amorphous silica and aluminum hydroxide is talc. The white inorganic pigment slurry having a solid content concentration of 22% was prepared with a Cowles disperser at a mixing ratio of 100: 30 with 140.1 parts of polyvinyl alcohol (PVA-235: manufactured by Kuraray) and ethylene. 25.3 parts of vinyl acetate (Polysol EVA AD-10: Showa Polymer Co., Ltd.) and water were added, and the content ratio of all-white inorganic pigment and ethylene vinyl acetate was adjusted to 100. Except that the 15, to obtain an ink jet recording sheet in the same manner as in Example 1.

(Comparative Example 5)
In Example 1, the amount of talc contained in the ink receiving layer (LMS-100, average particle size 6.0 μm: manufactured by Fuji Talc Co., Ltd.) was 0 part, and synthetic amorphous silica and aluminum hydroxide were mixed. 8. A white inorganic pigment slurry having a solid content concentration of 22% was prepared with a Cowles disperser with a mixing ratio of talc and talc of 100: 0, and polyvinyl alcohol (PVA-235: manufactured by Kuraray Co., Ltd.) was added to the pigment slurry. 2 parts, 12.5 parts of ethylene vinyl acetate (Polysol EVA AD-10: Showa Polymer Co., Ltd.) and water were added, and the content ratio of the all-white inorganic pigment and ethylene vinyl acetate was 100: 15. An ink jet recording sheet was obtained in the same manner as in Example 1.

(Comparative Example 6)
In Example 1, the addition amount of talc (LMS-100, average particle size 6.0 μm: manufactured by Fuji Talc) contained in the ink receiving layer was 11 parts, and the synthetic amorphous silica and aluminum hydroxide were mixed. A white inorganic pigment slurry having a solid content concentration of 22% was prepared with a Cowles disperser with a mixing ratio of the talc and the talc of 100: 10. Polyvinyl alcohol (PVA-235: manufactured by Kuraray Co., Ltd.) was added to the pigment slurry. 1 part, 18.1 parts of ethylene vinyl acetate (Polysol EVA AD-10: Showa Polymer Co., Ltd.) and water were added, except that the content ratio of all white inorganic pigment and ethylene vinyl acetate was 100: 15. An ink jet recording sheet was obtained in the same manner as in Example 1.

(Comparative Example 7)
In Example 1, the amount of talc contained in the ink receiving layer (LMS-100, average particle size 6.0 μm: manufactured by Fuji Talc) was 66 parts, and synthetic amorphous silica and aluminum hydroxide were mixed. 15. A white inorganic pigment slurry having a solid content concentration of 22% was prepared with a Cowles disperser with a mixing ratio of the talc and the talc of 100: 60. Polyvinyl alcohol (PVA-235: manufactured by Kuraray Co., Ltd.) Except that 7 parts, 26.4 parts of ethylene vinyl acetate (Polysol EVA AD-10: Showa Polymer Co., Ltd.) and water were added, and the content ratio of all-white inorganic pigment and ethylene vinyl acetate was 100: 15. An ink jet recording sheet was obtained in the same manner as in Example 1.

(Comparative Example 8)
In Example 1, except that the content of ethylene vinyl acetate (Polysol EVA AD-10: manufactured by Showa Polymer Co., Ltd.) was 0 part and the content ratio of all white inorganic pigment and ethylene vinyl acetate was 100: 0. An ink jet recording sheet was obtained in the same manner as in Example 1.

(Comparative Example 9)
In Example 1, the content of ethylene vinyl acetate (Polysol EVA AD-10: Showa Polymer Co., Ltd.) was 7.1 parts, and the content ratio of the all-white inorganic pigment and ethylene vinyl acetate was 100: 5. Except for the above, an ink jet recording sheet was obtained in the same manner as in Example 1.

(Comparative Example 10)
In Example 1, the content of ethylene vinyl acetate (Polysol EVA AD-10: Showa Polymer Co., Ltd.) was 42.9 parts, and the content ratio of the all-white inorganic pigment and ethylene vinyl acetate was 100: 30. Except for the above, an ink jet recording sheet was obtained in the same manner as in Example 1.

(Comparative Example 11)
In Example 1, an ink jet recording sheet was obtained in the same manner as in Example 1 except that the dry coating amount of the ink receiving layer was 2 g / m ² .

(Comparative Example 12)
In Example 1, an ink jet recording sheet was obtained in the same manner as in Example 1, except that the dry coating amount of the ink receiving layer was 13 g / m ² .

(Comparative Example 13)
In Comparative Example 11, for the aluminum hydroxide contained in the ink receiving layer, Hijilite H-42M (average particle size 1.0 μm: Showa Denko) used in Comparative Example 11 was replaced with a sand mill (DYNO-MILL: Shinmaru). An inkjet recording sheet was obtained in the same manner as in Comparative Example 11, except that the average particle size was changed to 0.21 μm.

(Comparative Example 14)
In Comparative Example 11, for aluminum hydroxide contained in the ink receiving layer, Hijilite H-32 (average particle size 8.0 μm: Showa Denko) was used as a sand mill (DYNO-MILL: Shinmaru Enterprises). An ink jet recording sheet was obtained in the same manner as in Comparative Example 11, except that the average particle diameter was replaced with 3.9 μm.

(Comparative Example 15)
In Comparative Example 11, for talc contained in the ink receiving layer, LMS-100 (average particle size 6.0 μm: manufactured by Fuji Talc) was pulverized with a sand mill (DYNO-MILL: manufactured by Shinmaru Enterprises). An ink jet recording sheet was obtained in the same manner as in Comparative Example 11 except that the average particle diameter was replaced with 3.1 μm.

(Comparative Example 16)
In Comparative Example 11, for talc contained in the ink receiving layer, LMP (average particle size: 16.0 μm: manufactured by Fuji Talc) was pulverized with a sand mill (DYNO-MILL: manufactured by Shinmaru Enterprises), and average particles An ink jet recording sheet was obtained in the same manner as in Comparative Example 11 except that the diameter was replaced with 11.2 μm.

(Comparative Example 17)
In Comparative Example 11, as a support, talc (talc NTL: manufactured by Nippon Talc Co., Ltd.) 5%, cationized starch (Kate 308: Nippon NSC Co., Ltd.) with respect to 100% of the absolute dry pulp in the pulp slurry made of hardwood bleached kraft pulp Manufactured) 0.8%, rosin sizing agent (Colopearl E-5: manufactured by Seiko PMC Co., Ltd.) 0.3%, sulfuric acid band 2.0%, paper is made, base paper 81.4g / m ² basis weight (JAPAN) An inkjet recording sheet was obtained in the same manner as in Comparative Example 11 except that paper surface pH 3.0) measured by TAPPI paper pulp test method No. 49-2 was made.

(Comparative Example 18)
In Comparative Example 11, as a support, talc (talc NTL: manufactured by Nippon Talc Co., Ltd.) 5%, cationized starch (Kate 308: Nippon NSC Co., Ltd.) with respect to 100% of the absolute dry pulp in the pulp slurry made of hardwood bleached kraft pulp Manufactured) 0.8%, rosin sizing agent (Colopearl E-5: manufactured by Seiko PMC Co., Ltd.) 0.3%, sulfuric acid band 0.3%, made paper, basis weight 81.4 / m ² base paper (JAPAN) An ink jet recording sheet was obtained in the same manner as in Comparative Example 11 except that paper surface pH 4.5) measured by TAPPI paper pulp test method No. 49-2 was made.

(Comparative Example 19)
In Comparative Example 11, as a support, calcium carbonate (Tama Pearl TP-121: manufactured by Okutama Kogyo Co., Ltd.) 5%, cationized starch (Kate 308: Nippon NSC Co., Ltd.) 0.8%, alkyl ketene dimer (size pine: Arakawa Chemical Co., Ltd.) 0.4%, sodium carbonate was added to make paper so that the paper making pH was 7.5, and paper was made. the amount 81.4g / ^{m 2} of the base paper (JAPAN
TAPPI Paper Pulp Test Method No. An ink jet recording sheet was obtained in the same manner as in Comparative Example 11 except that paper surface pH 7.8) measured in 49-2 was made.

(Comparative Example 20)
The ink receiving layer in Comparative Example 1 was applied to both sides of the support and dried to obtain an ink jet recording sheet.

(Comparative Example 21)
The ink receiving layer in Comparative Example 2 was applied to both sides of the support and dried to obtain an ink jet recording sheet.

(Comparative Example 22)
The ink receiving layer in Comparative Example 3 was applied to both sides of the support and dried to obtain an ink jet recording sheet.

(Comparative Example 23)
The ink receiving layer in Comparative Example 4 was applied to both sides of the support and dried to obtain an ink jet recording sheet.

(Comparative Example 24)
The ink receiving layer in Comparative Example 5 was applied to both sides of the support and dried to obtain an ink jet recording sheet.

(Comparative Example 25)
The ink receiving layer in Comparative Example 6 was applied to both sides of the support and dried to obtain an ink jet recording sheet.

(Comparative Example 26)
The ink receiving layer in Comparative Example 7 was applied to both sides of the support and dried to obtain an ink jet recording sheet.

(Comparative Example 27)
The ink receiving layer in Comparative Example 8 was applied to both sides of the support and dried to obtain an ink jet recording sheet.

(Comparative Example 28)
The ink receiving layer in Comparative Example 9 was applied to both sides of the support and dried to obtain an ink jet recording sheet.

(Comparative Example 29)
The ink receiving layer in Comparative Example 10 was applied to both sides of the support and dried to obtain an ink jet recording sheet.

(Comparative Example 30)
The ink receiving layer in Comparative Example 11 was applied to both sides of the support and dried to obtain an ink jet recording sheet.

(Comparative Example 31)
The ink receiving layer in Comparative Example 12 was applied to both sides of the support and dried to obtain an ink jet recording sheet.

(Comparative Example 32)
The ink receiving layer in Comparative Example 13 was applied to both sides of the support and dried to obtain an ink jet recording sheet.

(Comparative Example 33)
The ink receiving layer in Comparative Example 14 was applied to both sides of the support and dried to obtain an ink jet recording sheet.

(Comparative Example 34)
The ink receiving layer in Comparative Example 15 was applied to both sides of the support and dried to obtain an ink jet recording sheet.

(Comparative Example 35)
The ink receiving layer in Comparative Example 16 was applied to both sides of the support and dried to obtain an ink jet recording sheet.

(Comparative Example 36)
The ink receiving layer in Comparative Example 17 was applied to both sides of the support and dried to obtain an ink jet recording sheet.

(Comparative Example 37)
The ink receiving layer in Comparative Example 18 was applied to both sides of the support and dried to obtain an ink jet recording sheet.

(Comparative Example 38)
The ink receiving layer in Comparative Example 19 was applied to both sides of the support and dried to obtain an ink jet recording sheet.

(Comparative Example 39)
An ink jet recording sheet was obtained in the same manner as in Comparative Example 1, except that the basis weight of the support in Comparative Example 1 was replaced with 157 g / m ² .

(Comparative Example 40)
An inkjet recording sheet was obtained in the same manner as in Comparative Example 2, except that the basis weight of the support in Comparative Example 2 was replaced with that of 157 g / m ² .

(Comparative Example 41)
An ink jet recording sheet was obtained in the same manner as in Comparative Example 3 except that the basis weight of the support in Comparative Example 3 was replaced with 157 g / m ² .

(Comparative Example 42)
An ink jet recording sheet was obtained in the same manner as in Comparative Example 4 except that the basis weight of the support in Comparative Example 4 was replaced with that of 157 g / m ² .

(Comparative Example 43)
An ink jet recording sheet was obtained in the same manner as in Comparative Example 5, except that the basis weight of the support in Comparative Example 5 was replaced with 157 g / m ² .

(Comparative Example 44)
An ink jet recording sheet was obtained in the same manner as in Comparative Example 6 except that the basis weight of the support in Comparative Example 6 was replaced with 157 g / m ² .

(Comparative Example 45)
An ink jet recording sheet was obtained in the same manner as in Comparative Example 7, except that the basis weight of the support in Comparative Example 7 was replaced with that of 157 g / m ² .

(Comparative Example 46)
An ink jet recording sheet was obtained in the same manner as in Comparative Example 8, except that the basis weight of the support in Comparative Example 8 was replaced with 157 g / m ² .

(Comparative Example 47)
An inkjet recording sheet was obtained in the same manner as in Comparative Example 9, except that the basis weight of the support in Comparative Example 9 was replaced with that of 157 g / m ² .

(Comparative Example 48)
An inkjet recording sheet was obtained in the same manner as in Comparative Example 10, except that the basis weight of the support in Comparative Example 10 was replaced with that of 157 g / m ² .

(Comparative Example 49)
An inkjet recording sheet was obtained in the same manner as in Comparative Example 11 except that the basis weight of the support in Comparative Example 11 was replaced with that of 157 g / m ² .

(Comparative Example 50)
An ink jet recording sheet was obtained in the same manner as in Comparative Example 12, except that the basis weight of the support in Comparative Example 12 was replaced with 157 g / m ² .

(Comparative Example 51)
An ink jet recording sheet was obtained in the same manner as in Comparative Example 13, except that the basis weight of the support in Comparative Example 13 was replaced with 157 g / m ² .

(Comparative Example 52)
An ink jet recording sheet was obtained in the same manner as in Comparative Example 14, except that the basis weight of the support in Comparative Example 14 was replaced with 157 g / m ² .

(Comparative Example 53)
An inkjet recording sheet was obtained in the same manner as in Comparative Example 15, except that the basis weight of the support in Comparative Example 15 was replaced with that of 157 g / m ² .

(Comparative Example 54)
But replacing the basis weight of the support in Comparative Example 16 in which was 157 g / m ^2, thereby obtaining the ink jet recording sheet in the same manner as in Comparative Example 16.

(Comparative Example 55)
An inkjet recording sheet was obtained in the same manner as in Comparative Example 17 except that the basis weight of the support in Comparative Example 17 was replaced with that of 157 g / m ² .

(Comparative Example 56)
An inkjet recording sheet was obtained in the same manner as in Comparative Example 18 except that the basis weight of the support in Comparative Example 18 was replaced with that of 157 g / m ² .

(Comparative Example 57)
An inkjet recording sheet was obtained in the same manner as in Comparative Example 19 except that the basis weight of the support in Comparative Example 19 was replaced with that of 157 g / m ² .

(Comparative Example 58)
An ink jet recording sheet was obtained in the same manner as in Comparative Example 20, except that the basis weight of the support in Comparative Example 20 was replaced with 157 g / m ² .

(Comparative Example 59)
But replacing the basis weight of the support in Comparative Example 21 in which was 157 g / m ^2, thereby obtaining the ink jet recording sheet in the same manner as in Comparative Example 21.

(Comparative Example 60)
An inkjet recording sheet was obtained in the same manner as in Comparative Example 22 except that the basis weight of the support in Comparative Example 22 was replaced with that of 157 g / m ² .

(Comparative Example 61)
An inkjet recording sheet was obtained in the same manner as in Comparative Example 23, except that the basis weight of the support in Comparative Example 23 was replaced with that of 157 g / m ² .

(Comparative Example 62)
An ink jet recording sheet was obtained in the same manner as in Comparative Example 24, except that the basis weight of the support in Comparative Example 24 was replaced with 157 g / m ² .

(Comparative Example 63)
An inkjet recording sheet was obtained in the same manner as in Comparative Example 25 except that the basis weight of the support in Comparative Example 25 was replaced with that of 157 g / m ² .

(Comparative Example 64)
An inkjet recording sheet was obtained in the same manner as in Comparative Example 26, except that the basis weight of the support in Comparative Example 26 was replaced with that of 157 g / m ² .

(Comparative Example 65)
An inkjet recording sheet was obtained in the same manner as in Comparative Example 27, except that the basis weight of the support in Comparative Example 27 was replaced with 157 g / m ² .

(Comparative Example 66)
An ink jet recording sheet was obtained in the same manner as in Comparative Example 28 except that the basis weight of the support in Comparative Example 28 was replaced with that of 157 g / m ² .

(Comparative Example 67)
An inkjet recording sheet was obtained in the same manner as in Comparative Example 29, except that the basis weight of the support in Comparative Example 29 was replaced with that of 157 g / m ² .

(Comparative Example 68)
An inkjet recording sheet was obtained in the same manner as in Comparative Example 30, except that the basis weight of the support in Comparative Example 30 was replaced with that of 157 g / m ² .

(Comparative Example 69)
An ink jet recording sheet was obtained in the same manner as in Comparative Example 31, except that the basis weight of the support in Comparative Example 31 was replaced with that of 157 g / m ² .

(Comparative Example 70)
An ink jet recording sheet was obtained in the same manner as in Comparative Example 32 except that the basis weight of the support in Comparative Example 32 was replaced with 157 g / m ² .

(Comparative Example 71)
An inkjet recording sheet was obtained in the same manner as in Comparative Example 33, except that the basis weight of the support in Comparative Example 33 was replaced with 157 g / m ² .

(Comparative Example 72)
An ink jet recording sheet was obtained in the same manner as in Comparative Example 34, except that the basis weight of the support in Comparative Example 34 was replaced with 157 g / m ² .

(Comparative Example 73)
An ink jet recording sheet was obtained in the same manner as in Comparative Example 35, except that the basis weight of the support in Comparative Example 35 was replaced with 157 g / m ² .

(Comparative Example 74)
An ink jet recording sheet was obtained in the same manner as in Comparative Example 36, except that the basis weight of the support in Comparative Example 36 was replaced with 157 g / m ² .

(Comparative Example 75)
An inkjet recording sheet was obtained in the same manner as in Comparative Example 37, except that the basis weight of the support in Comparative Example 37 was replaced with 157 g / m ² .

(Comparative Example 76)
An ink jet recording sheet was obtained in the same manner as in Comparative Example 38, except that the basis weight of the support in Comparative Example 38 was replaced with 157 g / m ² .

  In Examples and Comparative Examples, when the ink receiving layer was provided on both sides, the same amount was applied.

In the ink jet recording sheet thus obtained, the sharpness of the printed image in the ink jet printer using the non-aqueous ink, the suitability of the ink printed on the image printed with the non-aqueous ink, the ink absorbability of the non-aqueous ink, The paper peeling at the time of high-speed continuous sheet conveyance and the sheet conveyance at the time of high-speed continuous sheet conveyance in an inkjet printer using non-aqueous ink were evaluated by the following methods, respectively, and are shown in Tables 1 to 4. Evaluation was carried out using an ORPHIS HC5500 machine, which is an inkjet printer for non-aqueous inks manufactured by Riso Kagaku Kogyo. The ink absorbency is determined by the ORPHIS mentioned above.
Evaluation was carried out using an HC5500 machine equipped with an HC finisher system (made by Riso Kagaku Kogyo).

“Vividness of Printed Image”: Whether or not the printed image was clear when printed with an ORPHIS HC5500 machine, which is an inkjet printer for non-aqueous ink manufactured by Riso Kagaku Kogyo, was visually evaluated according to the following criteria.
A: The printed image is very clear and the contrast is clear.
A: The printed image is clear and has a contrast and is at a practical level.
Δ: The printed image is clear, but the contrast is not so clear, the image is slightly blurred, and cannot be used practically.
X: The printed image is not clear, white blurring, and is not practical.

“Adequacy of ink back-through”: The degree of ink back-through when printed with an ORPHIS HC5500 machine, which is an inkjet printer for non-aqueous ink manufactured by Riso Kagaku Kogyo Co., Ltd., was visually evaluated according to the following criteria.
A: There is no back-through of ink, and there is no sense of incongruity when printing on both sides.
○: There are few ink see-throughs, and even if double-sided printing is practically not noticeable.
[Delta]: Worried about ink breakthrough, there is a slight sense of incongruity when printing on both sides, and it is not practical.
X: Ink penetration is bad, there is a sense of incongruity when printing on both sides, and it is not practical.

“Ink absorbability”: An ORPHIS HC-5500 machine manufactured by Riso Kagaku Kogyo Co., Ltd., which is equipped with an HC finisher system manufactured by Roshi Kagaku Kogyo Co., Ltd. is used. Load sheets, set the printer output setting to photo priority mode, and perform continuous printing operation. At this time, it passed through the printer and finisher, and in the printed part of the stacked sheets, the presence or absence of roller stains caused by insufficient ink absorption was examined, the degree of stains was confirmed visually, and the following criteria were evaluated.
A: The ink absorption speed is very fast, the surface is completely dry immediately after printing, and there is no sheet contamination after passing the finisher.
○: The ink absorption speed is fast, the surface is almost dry immediately after printing, there is almost no stain on the sheet after passing the finisher, and it is at a practical level.
(Triangle | delta): The ink absorption speed is not so fast, the ink has floated on the surface for a while immediately after printing, the sheet stain | pollution | contamination after finishing finisher can be confirmed, and it cannot endure practical use.
X: The ink absorption speed is slow, the ink does not dry immediately after printing, the sheet is very dirty after passing the finisher, and is not practical.

“Peeling off paper during high-speed continuous sheet conveyance”… Using an ORPHIS HC-5500 machine manufactured by Riso Kagaku Kogyo Co., Ltd., 500 sheets of A4 size sheets are set in the sheet feeding section of the printer, and high-speed continuous printing operation (120 sheets) / Min), and it was visually confirmed whether or not the cut cut edge of the surface picked up by the pickup roller for each sheet was peeled off, and evaluated according to the following criteria.
(Double-circle): There is no generation | occurrence | production of paper peeling in all 500 sheets, and there is no problem practically.
○: There is almost no peeling of paper in 500 sheets, and it is at a practical level.
(Triangle | delta): Paper peeling can be confirmed to more than half of 500 sheets, and it cannot endure practical use.
X: Paper peeling occurred remarkably in almost all of 500 sheets, and it was not practical.

"Sheet transportability during high-speed continuous sheet conveyance" ... Using an ORPHIS HC-5500 machine manufactured by Riso Kagaku Kogyo Co., Ltd., 500 sheets of A4 size sheets are set in the sheet feeder of the printer, and high-speed continuous printing operation (120 sheets) The number of sheets that were conveyed (multi-feed) with two or more sheets overlapped was examined. In addition, even when double feeding did not occur, the paper alignment when stacking on the paper discharge tray was also examined and evaluated according to the following criteria. The test environmental conditions were 23 ° C. and 50% RH.
○: All 500 sheets are conveyed one by one, and there is no double feed, and there is no practical problem.
Δ: All 500 sheets are conveyed one by one, and there is no double feed. However, the sheets are not well aligned when stacked on the sheet discharge tray, and cannot be practically used.
×: Even one of the 500 sheets is in a state where double feeding has occurred and is not practically usable.

  “Static friction coefficient”: The values were measured in accordance with JIS P 8147: 1994 “Friction coefficient test method for paper and paperboard” with the two sheets aligned vertically and horizontally with the front and back surfaces facing each other.

  “Dynamic friction coefficient”: The values were measured in accordance with JIS P 8147: 1994 “Friction coefficient test method for paper and paperboard” with the front and back surfaces of the two sheets aligned vertically and horizontally.

In the comparison between Examples 1, 15, 29, and 43 and Comparative Examples 3, 22, 41, and 60, and in comparison with Comparative Examples 4, 23, 42, and 61, the synthetic amorphous silica contained in the ink receiving layer In the mixing ratio of aluminum hydroxide to aluminum hydroxide, it can be seen that aluminum hydroxide is not included and the mixing ratio of aluminum hydroxide is extremely large. From this result, in any of the comparative examples, it is impossible to combine the sharpness of the printed image, the suitability for see-through, and the ink absorbability. When aluminum hydroxide with a small particle size is not included in the synthetic amorphous silica, the sharpness of the printed image cannot be obtained, and the suitability of the ink for back-through is deteriorated. In the mixing ratio with small aluminum hydroxide, if the ratio of the aluminum hydroxide is larger than 100: 20, ink absorbability cannot be obtained. Further, in Comparative Examples 1, 2, 20, 21, 39, 40, 58, 59, even if the mixing ratio of synthetic amorphous silica and aluminum hydroxide is between 100: 5 and 100: 20, It can be seen that the average particle size of the synthetic amorphous silica is extremely small and extremely large. From these results, in any case, it is impossible to combine the sharpness of the printed image, suitability for see-through, and ink absorbability. If the average particle size of the synthetic amorphous silica is less than 5.0 μm, ink absorbability cannot be obtained. If the average particle diameter of the synthetic amorphous silica exceeds 10.0 μm, the image clarity cannot be obtained, and ink breakthrough occurs. Further, from the comparison between Examples 1, 15, 29, and 43 and Comparative Examples 5, 24, 43, and 62, the inclusion of talc in the ink receiving layer improves the sheet conveyance property during high-speed continuous sheet conveyance. I understand. When the talc is not included in the ink receiving layer, both the static friction coefficient and the dynamic friction coefficient increase. That is, the coefficient of static friction is significantly higher than 0.9, the coefficient of dynamic friction is significantly higher than 0.6, and multiple feeds occur frequently. Further, even when talc is contained in the ink receiving layer as in Comparative Examples 6, 25, 44, and 63, the mixing ratio of the mixture of synthetic amorphous silica and aluminum hydroxide to talc is 100. : When the ratio of talc is smaller than 20, both the coefficient of static friction and the coefficient of dynamic friction are larger than when no talc is included. That is, the coefficient of static friction exceeds 0.9, and the coefficient of dynamic friction is Since it exceeds 0.6 and double feeding occurs, the transportability is still insufficient. On the other hand, as in Comparative Examples 7, 26, 45 and 64, the amount of talc contained in the ink receiving layer was extremely large, and the mixing ratio of talc to a mixture of synthetic amorphous silica and aluminum hydroxide was 100. When the ratio of talc is larger than 50, both the static friction coefficient and the dynamic friction coefficient are small. That is, the coefficient of static friction is less than 0.4 and the coefficient of dynamic friction is less than 0.2, and although double feeding does not occur, slippage is excessive and sheet irregularities after ejection occur, and the sheet cannot be stacked neatly. Is insufficient. Also, Examples 1, 7, 8, 15, 21, 22, 29, 35, 36, 43, 49, 50 and Comparative Examples 8, 9, 10, 27, 28, 29, 46, 47, 48, 65, From the comparison with 66 and 67, the ink absorption is good when the content ratio of the white inorganic pigment and ethylene vinyl acetate is between 100: 7 and 100: 25, and the paper peels off during high-speed continuous sheet conveyance. I understand. When the ratio of ethylene vinyl acetate is less than 100: 7, paper peeling is insufficient. When the ratio of ethylene vinyl acetate is more than 100: 25, paper peeling is good but ink absorbability is insufficient. Regarding the difference in the basis weight of the base paper, the larger the base paper basis weight (157 g / m ² ), the paper peeling tends to be slightly worse, but the results of the paper peeling at the ethylene vinyl acetate content ratio tend to be the same. . Comparative Example 11 and Comparative Example 12, Comparative Example 30 and Comparative Example 31, Comparative Example 49 and Comparative Example 50, and Comparative Example 68 and Comparative Example 69 are synthetic amorphous silica and aluminum hydroxide. Even if the mixing ratio is between 100: 5 and 100: 20, and the average particle size of the synthetic amorphous silica is between 5.0 μm and 10.0 μm, the dry coating amount of the ink receiving layer It can be seen when there is an extremely small amount and an extremely large amount. From these results, in any case, it is impossible to combine the sharpness of printed images, suitability for show-through and ink absorbability. When the dry coating amount per side of the ink receiving layer is less than 3.0 g / m ² , the ink can not be easily exposed and the ink cannot be absorbed. When the dry coating amount per side of the ink receiving layer exceeds 10.0 g / m ² , the sharpness of the image cannot be obtained. Moreover, even if it is a layer structure of two or more layers, if the dry coating amount is 3 to 10 g / m ² in total, it is possible to combine the sharpness of print images, suitability for see-through, and ink absorbency. Comparing Comparative Example 11 and Comparative Examples 13 and 14, Comparative Example 30 and Comparative Examples 32 and 33, Comparative Example 49 and Comparative Examples 51 and 52, and Comparative Example 68 and Comparative Examples 70 and 71, The difference in the average particle diameter of aluminum can be seen. When the average particle diameter of aluminum hydroxide is less than 0.3 μm, the ink absorbability deteriorates. It can be seen that when the average particle size of aluminum hydroxide exceeds 3.0 μm, the sharpness of the printed image deteriorates. Comparing Comparative Example 11 and Comparative Examples 15 and 16, Comparative Example 30 and Comparative Examples 34 and 35, Comparative Example 49 and Comparative Examples 53 and 54, and Comparative Example 68 and Comparative Examples 72 and 73, the average of talc You can see the difference in particle size. When the average particle diameter of talc is less than 4.0 μm, the static friction coefficient and the dynamic friction coefficient increase, and the sheet transportability during high-speed continuous sheet transport deteriorates. It can be seen that when the average particle diameter of talc exceeds 10.0 μm, the sheet transportability during high-speed continuous sheet transport is good, but the sharpness of the printed image deteriorates. Comparative Example 11 and Comparative Examples 17, 18, and 19, Comparative Example 30 and Comparative Examples 36, 37, and 38, Comparative Example 49 and Comparative Examples 55, 56, and 57, and Comparative Example 68 and Comparative Examples 74 and 75, When comparing with 76, it can be seen about the difference in the paper pH of the support. It can be seen that when the paper surface pH is less than 6.0, the sharpness of the printed image is good, but the ink absorbability deteriorates. It can be seen that when the paper surface pH exceeds 7.5, the ink absorption is good, but the sharpness of the printed image is deteriorated. It can be seen that the above-mentioned tendency is the same when the ink receiving layer is provided on both sides and when the basis weight of the support is increased. Based on the above, the mixing ratio of synthetic amorphous silica and aluminum hydroxide, which is a white inorganic pigment, the average particle diameter of synthetic amorphous silica, and a synthetic amorphous material containing talc as a white inorganic pigment in the ink receiving layer Ratio of talc to a mixture of porous silica and aluminum hydroxide, content ratio of white inorganic pigment consisting of synthetic amorphous silica, aluminum hydroxide and talc and ethylene vinyl acetate resin, dry coating of ink receiving layer By setting the amount and the like as the conditions of the example, (1) printing with a non-aqueous ink can be performed and the printed image has excellent sharpness, (2) the back-through of the ink on the back of the sheet is minute, There is no sense of incongruity even in double-sided printing. (3) Excellent ink absorbability of non-aqueous ink and occurs during high-speed continuous sheet conveyance in an inkjet printer using non-aqueous ink. It is not generated contamination by the roller, it is possible to simultaneous high-speed continuous sheet to be excellent in sheet conveying property during conveying, the four elements in the ink jet printer using the (4) non-aqueous ink.

Claims (5)

In an ink jet recording sheet corresponding to a non-aqueous ink comprising a solvent, a dispersant and a pigment, wherein an ink receiving layer comprising one or more layers is provided on at least one surface of the support,
The ink receiving layer is mainly composed of a white inorganic pigment and a binder,
The white inorganic pigment is composed of synthetic amorphous silica, aluminum hydroxide and talc,
The binder comprises polyvinyl alcohol and ethylene vinyl acetate, and
The blending mass ratio of the synthetic amorphous silica and the aluminum hydroxide is 100: 5 to 100: 20,
The synthetic amorphous silica has an average particle size of 5.0 to 10.0 μm,
The blending mass ratio of the total of the synthetic amorphous silica and the aluminum hydroxide and the talc is 100: 20 to 100: 50,
The blending mass ratio of the white inorganic pigment and the ethylene vinyl acetate is 100: 7 to 100: 25,
An ink jet recording sheet for non-aqueous ink, wherein the dry coating amount of the ink receiving layer is 3 to 10 g / m ² per side.   2. The inkjet recording sheet for non-aqueous ink according to claim 1, wherein an average particle diameter of the aluminum hydroxide is 0.3 to 3.0 μm.   3. The non-aqueous ink jet recording sheet according to claim 1, wherein the talc has an average particle size of 4.0 to 10.0 μm.   The support is paper, and the JAPAN TAPPI paper pulp test method no. The paper surface pH of the support measured by 49-2 "Paper and paperboard-Surface pH test method-Part 2: Indicator method" is 6.0 to 7.5. 4. An ink jet recording sheet for non-aqueous ink according to 3.   The two sheets are aligned vertically and horizontally, the front and back surfaces face each other, the static friction coefficient measured by JIS P 8147: 1994 “Friction coefficient test method for paper and paperboard” is 0.4 to 0.9, and the dynamic friction coefficient is The inkjet recording sheet for non-aqueous ink according to claim 1, wherein the recording sheet is 0.2 to 0.6.