JP4645199B2 - Method for producing coated paper for printing - Google Patents

Description

  The present invention relates to efficiently producing a coated paper for printing having high blank paper glossiness, excellent blank paper texture, excellent printability, and excellent operability.

In recent years, there has been a strong demand to visually convey the contents of printed matter by using a lot of photographs and designs and further colorizing them. In general, coated paper is roughly classified into high gloss coated paper and matte coated paper. High gloss coated paper is art paper, super art paper, coated paper or the like conventionally used for high-grade printing, and the printed finish is glossy with both high gloss and white paper gloss. Matte coated paper has a dull tone and matte tone depending on the glossiness of white paper and printing gloss. The matte tone is a flat and calm print with low gloss on both the white and printed sides, and the dull tone is an intermediate between glossy and matte tone, with low gloss on the white paper but high print gloss. is there. The glossy tone has high white paper glossiness and printing glossiness, and in recent years, the demand is increasing mainly for high-quality magazines. Since glossy coated paper is often used when high-quality printing is required, the texture of coated paper is an important issue.
In particular, in a field where the glossiness of the blank paper exceeds 90%, cast coated paper, and a polylaminated product that forms a highly glossy surface by applying polylamination after printing is mainly used. The surface of the cast coated paper has a higher gloss than ordinary coated paper because the wet coated layer is pressed against the heated mirror drum surface for surface processing. It is used for applications such as covers that attract attention and are highly advertising. In recent years, polylaminated products have a high recovery rate of used paper due to an increase in environmental awareness. However, since polylami is difficult to separate in the recycling process, cast coated paper that is not polylaminated has become an environmentally friendly product.
High gloss coated paper called cast coated paper is a stage where the base paper is coated with a water-based paint mainly composed of pigment and adhesive to provide a coating layer, and the coating layer is in a wet state. The coating layer is manufactured by pressing and drying on a heated metal mirror drum.
As a method for producing the cast coated paper, a wet coated layer is directly pressed against a heated mirror surface drum to give a gloss finish (hereinafter referred to as casting), and a wet coated layer is formed. Gelled cast method in which it is pressed into a gel-like heated mirror surface and casted. After the wet coating layer is dried, it is plasticized by rewetting and pressed into a heated mirror drum for casting. A rewetting cast method is known.
All of these methods for producing cast coated paper are common in that the cast coated layer is pressed against the heated mirror drum surface and dried while the cast coated layer is in a wet or plastic state. However, the operability and the quality of the resulting cast coated paper have the following drawbacks due to the difference in the plastic state of the cast coating layer.

  In the wet cast method, the viscosity of the cast coating layer is low, and if the temperature of the mirror drum surface is 100 ° C. or higher, the coating liquid boils and the coating layer is destroyed. Can not do it. Since there is no drying process before casting and the drying load is large, it is necessary to operate at a low speed.

  In the gelation cast method, the cast coating layer is gelled, so that the temperature of the mirror drum surface can be 100 ° C. or higher. However, since there is no drying process before casting and the drying load is large, it is necessary to transfer a large amount of water contained in the cast coating layer to the base paper layer by evaporation smoothly when contacting the mirror drum. Also, it is difficult to adjust the degree of gelation of the coating layer, and for this reason, when cast processing is performed at a very high speed, the quality of white paper gloss and the like deteriorates.

  In the rewet casting method, since the cast coating layer is once dried before the casting process, the temperature of the mirror drum surface can be raised to 90 to 180 ° C. However, since the cast coating layer has low plasticity compared to the wet cast method and gelation cast method, when cast at high speed, so-called cast surface defects such as pinholes on the cast coating layer, uneven adhesion, etc. There is a drawback that occurs easily.

  Various methods have been proposed to solve such problems. For example, a method has been proposed in which a plastic pigment and a latex having a minimum film increasing temperature of less than 0 ° C. are blended in a cast coating layer (see Patent Document 1). The cast coated paper obtained by this method is excellent in white paper gloss, but the air permeability of the paper is not sufficient and the production efficiency is low. A method of blending a hollow plastic pigment into a cast undercoat layer has been proposed (see Patent Document 2). Although the production efficiency of the cast coated paper obtained by this method is improved as compared with the conventional product, the processing speed is not sufficiently satisfactory at around 100 m / min.

As a method for efficiently obtaining a high gloss coated paper without casting, there is a countermeasure such as supercalender processing linear pressure enhancement. By enhancing the calendering linear pressure, the surface smoothness is improved and the glossiness of the white paper is increased. It is difficult to obtain a printing surface feeling sufficient for use in the printing.
In recent years, many high-temperature calendar methods have been proposed, which have been used in place of conventional supercalenders, and higher finishing speed, printing glossiness, opacity, stiffness, etc. are relatively improved. Has been reported. However, if only this method is used, the glossiness can be increased efficiently, but since it is processed at a high temperature, it is easily affected by moisture in the paper, and if the moisture profile in the width direction is not uniform, A slight unevenness of the degree occurs, which is not preferable in appearance. In addition, when the surface property of the coated paper before being calendered at high temperature is inferior, a slight unevenness in the glossiness of the white paper is similarly generated, and it cannot sufficiently cope with high-quality printing.

  As such a countermeasure, for example, according to Patent Document 3, the surface is treated with a brush roll and a metal roll in which fibers are planted immediately before or immediately after processing with a high-temperature calender, and surface basis weight unevenness, coating amount unevenness, etc. are polished to be minute. Although it is intended to solve the glossiness unevenness, paper dust is generated by this method alone, which is not preferable from the viewpoint of operation.

        As described above, in the prior art, it has been difficult to efficiently obtain a coated paper for printing having high blank paper glossiness, excellent blank paper surface feeling, and desired printability.

JP-A-4-146294 Japanese Patent Laid-Open No. 9-268493 JP 9-228289 A

  In view of such a situation, an object of the present invention relates to efficiently producing a coated paper having high blank paper glossiness, excellent blank paper feel, and excellent printability such as high print glossiness.

As a result of intensive studies on the above problems, the present inventors have made a plastic pigment as an inorganic pigment 100 in a method for producing a coated paper for printing in which a coating liquid containing a pigment and an adhesive is coated on a base paper. After coating a coating solution containing 2 to 30 parts by weight with respect to parts by weight, after passing through a calendar composed of an elastic roll and a metal roll heated to 40 ° C. or more and less than 100 ° C., the coated paper moisture 5 to 8% of the coated paper is passed through a calender composed of an elastic roll and a metal roll heated to 100 ° C. or higher and higher than the roll temperature by 20 ° C. or higher , and the calender treatment It has been found that it can be obtained by finishing at a speed of 400 m / min or more .

In the present invention, the base paper contains 2 to 30 parts by weight of a plastic pigment with respect to 100 parts by weight of the inorganic pigment, and after coating, a calendar composed of an elastic roll and a metal roll heated to 40 ° C. or more and less than 100 ° C. After passing the paper , the coated paper having a moisture content of 5 to 8% is passed through a calendar composed of an elastic roll and a metal roll heated to 100 ° C or higher and higher by 20 ° C or higher than the roll temperature. It is important that the paper is finished and the calendering processing speed is 400 m / min or more . In order to increase the efficiency of increasing the glossiness of blank paper using a calendar heated to a high temperature, it is preferable to use in combination with a plastic pigment having a glass transition temperature lower than the roll surface temperature. In addition, after coating, once the paper is passed through a calendar heated to 40 ° C. or more and less than 100 ° C., the moisture profile in the coated paper becomes more uniform and the coated paper surface becomes smooth. The glossiness is low, and glossiness unevenness does not occur at this point. Thereafter, by passing through a calender which is 20 ° C. or more higher than the roll temperature and heated to 100 ° C. or more, a coated paper having high whiteness, high white paper gloss and little gloss unevenness can be obtained.

According to the present invention, it is possible to efficiently obtain a coated paper for printing having high blank paper glossiness, excellent blank paper texture, excellent printability such as high print glossiness, and good operability.

In the present invention, the plastic pigment is added in an amount of 2 to 30 parts by weight, more preferably 2 to 20 parts by weight with respect to 100 parts by weight of the inorganic pigment in order to increase the efficiency of increasing the glossiness of the white paper using a calendar heated to a high temperature. More preferably, it is important to blend 3 to 15 parts by weight. When less than 2 parts by weight is blended, glossiness is not sufficient, and when more than 30 parts by weight is blended, the plastic pigment melts when passing through a calendar heated to high temperature, sticks to a metal roll, and tears. , Paper breakage troubles occur. After coating, passing the paper once through a calender consisting of an elastic roll and a metal roll heated to 40 ° C. or more and less than 100 ° C. makes the moisture profile in the coated paper more uniform and smoothes the coated paper surface. Therefore, it leads to reduction of sticking of the paper to the metal roll at the time of calendar processing at high temperature.
As the plastic pigment used in the present invention, a solid type, a hollow type, a core-shell type, or the like can be used singly or in combination of two or more as required. As the constituent polymer component of the plastic pigment, a monomer such as styrene and / or methyl methacrylate is preferably used as a main component, and other monomers copolymerizable with these as necessary. Examples of the copolymerizable monomer include olefinic aromatic monomers such as α-methylstyrene, chlorostyrene, and dimethylstyrene, methyl (meth) acrylate, ethyl (meth) acrylate, and butyl (meth) acrylate. Monoolefin monomers such as 2-ethylhexyl (meth) acrylate, glycidyl (meth) acrylate, (meth) acrylonitrile, and monomers such as vinyl acetate. If necessary, for example, olefinic unsaturated carboxylic acid monomers such as acrylic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid, crotonic acid, hydroxyethyl, hydroxyethyl methacrylate, hydroxypropyl acrylate Olefinic unsaturated hydroxy monomers such as hydroxypropyl methacrylate, acrylamide, methacrylamide, N-methylolacrylamide, N-methylolmethacrylamide, N-methoxymethylacrylamide and other olefinic unsaturated amide monomers, divinylbenzene, etc. These dimer vinyl monomers can be used singly or in combination of two or more. These monomers are examples, and any other copolymerizable monomer may be used.

  Moreover, there is no restriction | limiting in particular in the inorganic pigment used by this invention, It can use in the range which does not impair the effect of this invention. Typical inorganic pigments include clay, kaolin, engineered kaolin, delaminated clay, talc, titanium dioxide, barium sulfate, zinc oxide, calcium sulfate, silicic acid, silicate, colloidal silica, satin white and the like. .

  In this invention, it is preferable to provide 1-3 coating layers, and when providing two or more layers, it is preferable to mix | blend a plastic pigment with the outermost layer.

  The adhesive used in the present invention is conventionally used for coated paper, such as styrene / butadiene, styrene / acrylic, ethylene / vinyl acetate, butadiene / methyl methacrylate, vinyl acetate / butyl acrylate, and the like. Synthetic adhesives such as various copolymers, polyvinyl alcohol, maleic anhydride copolymer, acrylic acid / methyl methacrylate copolymer, casein, soy protein, synthetic protein and other proteins, oxidized starch, cationized starch, One or more kinds of starches such as urea phosphate esterified starch and hydroxyethyl etherified starch, and cellulose derivatives such as carboxymethyl cellulose, hydroxymethyl cellulose, and hydroxyethyl cellulose can be appropriately selected and used. These adhesives are preferably used in the range of 5 to 35 parts by weight, more preferably 7 to 25 parts by weight, with respect to 100 parts by weight of the pigment. When the amount exceeds 35 parts by weight, the viscosity of the coating becomes high, and disadvantages such as the problem of operability such as difficulty in passing through piping and a screen occur, which is not preferable. On the other hand, when the amount is less than 5 parts by weight, a sufficient surface strength cannot be obtained, which is not preferable.

  In the coating liquid of the present invention, various commonly used auxiliaries such as dispersants, thickeners, water retention agents, antifoaming agents, water resistance agents, dyes and fluorescent dyes can be used as auxiliaries. In particular, it is preferable to add a fluorescent dye to increase whiteness.

  The base paper in the present invention comprises pulp, fillers and various auxiliaries. As the pulp, chemical pulp, semi-chemical pulp, mechanical pulp, waste paper pulp and the like can be used, but it is preferable to use chemical pulp and antichemical pulp from the viewpoint of whiteness. Most preferably, chemical pulp is contained at 100% by weight.

  As the filler used for the base paper, known fillers such as light calcium carbonate, heavy calcium carbonate, talc, kaolin, clay, silica, zeolite, titanium oxide, and synthetic resin filler can be used. A compounding quantity is about 3 to 20 weight%. These fillers may be used alone or in combination of two or more for the purpose of adjusting papermaking suitability and strength characteristics of the paper stock slurry.

  The chemicals normally used in the paper making process, such as a paper strength enhancer, a sizing agent, an antifoaming agent, a colorant, a bulking agent, a softening agent, etc., as necessary for these stocks do not impair the effects of the present invention Paper can be added within the range.

The paper making method of the base paper is not particularly limited, and any of the base paper made by acid paper making, neutral paper making, or alkali paper making using a long mesh machine including a top wire, a round mesh machine, etc. May be. Further, a base paper or the like preliminarily coated with starch, polyvinyl alcohol or the like using a size press, a gate roll coater, a bill blade, or the like can be used. The coating base paper, basis weight for use in coated paper generally is about 25~400g / ^{m 2,} preferably from 30 to 200 g / ^{m 2.}

In the present invention, the method for applying the adjusted coating liquid to the base paper is not particularly limited, and a known coating apparatus can be used. Examples thereof include a blade coater, a bar coater, a roll coater, an air knife coater, a reverse roll coater, a curtain coater size press coater, and a gate roll coater. Using these, one or more layers are coated on one side or both sides on the base paper. Preferably the coating weight per one side is ^{3g / m 2 ~35g / m 2} , more preferably from ^{10g / m 2 ~25g / m 2} . When the coating amount per side is less than 3 g / m ² , sufficient base paper coverage cannot be obtained, and the ink deposition property is inferior. In the present invention, the coating speed is 500 m / min or more, more preferably, the operability is excellent even at a high speed exceeding 1000 m / min.

As a method for drying the wet coating layer, for example, usual methods such as a steam heater, a gas heater, an infrared heater, an electric heater, a hot air heater, a microwave, and a cylinder dryer are used.
In the present invention, the coated paper thus obtained is passed through a calender composed of an elastic roll and a metal roll heated to 40 ° C. or more and less than 100 ° C., and then the elastic roll, 100 ° C. or more and the roll temperature. The paper is finished by passing through a calendar made of a metal roll heated to a high temperature of 20 ° C. or higher, preferably 40 ° C. or higher.
In the present invention, the treatment is first performed at a relatively low temperature, but by performing the low temperature treatment before the treatment at a high temperature, the moisture profile in the coated paper is made more uniform and the surface of the coated paper is also smoothed. Then, uneven glossiness that occurs when heating at a temperature higher than the roll temperature by 20 ° C. or more and 100 ° C. or more can be suppressed. For this reason, when the temperature is lower than 40 ° C., the effect of making it uniform is poor, and when it is higher than 100 ° C., it is the same as performing a high temperature treatment with water unevenness, and gloss unevenness occurs, which is not preferable. As a more preferable range, it is 40 to 80 degreeC, More preferably, it is 50 to 80 degreeC.
The surface temperature of the metal roll subjected to the high temperature treatment performed after the low temperature treatment is preferably 120 ° C. or higher and 300 ° C. or lower. If the moisture content of the coated paper is appropriate, the base paper or the coated layer can be smoothed by using a metal roll heated to 100 ° C. or higher, and a high gloss coated paper can be obtained. . The moisture content of the coated paper before the high temperature treatment is preferably 5 to 8%.
Further, the treatment linear pressure of the calendar in the present invention is 100 ° C. or more with respect to the average of the linear pressure when passing through a calendar composed of an elastic roll and a metal roll heated to 40 ° C. or more and less than 100 ° C. In addition, it is preferable that the average linear pressure when passing through a calendar made of a metal roll heated to 20 ° C. or more higher than the roll temperature is 20 kg / cm or more. This is because the first calendar process performed at a relatively low temperature is intended to adjust the moisture profile and surface properties of the coated paper compared to the high temperature calendar process performed later. This is preferable in terms of preventing density unevenness and reducing the density. A preferable linear pressure range is 10 to 250 kg / cm, more preferably 10 to 210 kg / cm, and still more preferably 10 to 180 kg / cm. Further, the processing linear pressure of the high temperature calendar is preferably higher than the low temperature calendar processing by an average linear pressure of 20 kg / cm or more in order to improve the suppression of blank paper glossiness, printing glossiness, and minute gloss unevenness. Preferably they are 40 Kg / cm or more and 200 Kg / cm or less. Making the average linear pressure 20 Kg / cm or more higher than the low temperature calendering is a comparison of values obtained by averaging the linear pressures at the respective nips when the low temperature treatment and the high temperature treatment are multistage. The preferable linear pressure range of the high temperature calendar is 30 to 500 kg / cm, more preferably 120 to 500 kg / m, and still more preferably 180 to 500 kg / cm. Moreover, as a preferable condition when using a high temperature soft nip calender as the high temperature calendar treatment, for example, the Shore D hardness of the elastic roll is 80 to 100, preferably 85 to 95, and the paper passing speed is 400 to 3000 m / min. A linear pressure of 30 to 500 Kg / cm and a pre-calendar coated paper moisture of 5 to 8% are preferable. The number of nips in the low temperature treatment and the high temperature treatment is preferably 1 nip or more, more preferably 1 to 4 nips in the low temperature treatment, 2 nips or more in the high temperature treatment, more preferably 2 to 5 nips. In the present invention, the treatment is performed with a plurality of calendar rolls, and as a form thereof, a plurality of calendars in which a pair of elastic rolls and metal rolls are installed, a calendar roll is vertically or obliquely arranged. Either of the arranged multistage type may be used. However, the most preferable form of the calendar in the present invention is a multistage form, and further, a structure that does not have a mechanism for suppressing the weight of the upper roll from being applied to the lower roll. By adopting this form, it is possible to perform relatively low temperature and low linear pressure processing at the upper stage, and rationally perform high temperature and high linear pressure processing at the lower stage, and no space is required in terms of equipment. There are advantages.
Furthermore, the most preferable calendar form in the present invention will be described. Calendar rolls are arranged vertically, and the number of rolls is 10 or 12. At this time, the types of rolls are, from above, metal roll (A), elastic roll (B), metal roll (C), elastic roll (D), metal roll (E), elastic roll (F), metal roll (G ), An elastic roll (H), an elastic roll (I), a metal roll (J), an elastic roll (K), and a metal roll (L) (in the case of nine, E and F are excluded). At this time, a metal roll (G) and a metal roll (J) are heated at 100 degreeC or more, and another metal roll is heated at 40 to 100 degreeC. By taking this form, the metal roll (A) to the metal roll (E) make the moisture profile more uniform by the relatively low linear pressure treatment, and the coated paper surface becomes moderately smooth. The metal roll (G) Can perform high temperature treatment on one side of the coated paper and high temperature treatment on the other side with a metal roll (J). At this time, the surface treated with the metal roll (J) (surface B) is treated with a higher linear pressure than the surface treated with the metal roll (G) (surface A). Unlike surface B, the number of times of low temperature / low linear pressure treatment is high, so that there is little difference in glossiness between the front and the back. Further, even when the calendering speed is preferably 400 m / min or more, more preferably 500 m / min or more, high gloss equivalent to cast coated paper can be obtained.

In the present invention, it is particularly preferably a high gloss coated paper having a glossiness of 85% or more, more preferably 90% or more, and a density of 0.90 to 1.50 g / cm ³ , more preferably 0.95. A more excellent effect can be exhibited at 1.35 g / cm ³ . Further, in the present invention, even when the calendar processing speed is 400 m / min or more, it is possible to obtain a white paper gloss level equivalent to that of cast coated paper, and the processing speed is faster than the casting coating method. Excellent operability.

EXAMPLES The present invention will be specifically described below with reference to examples, but of course not limited to these examples. Unless otherwise specified, “parts” and “%” in the examples represent “parts by weight” and “% by weight”, respectively, and are values in terms of solid content. In addition, it tested based on the following evaluation methods about the coating liquid and the obtained coated paper for printing.
(Evaluation methods)
(1) Glossiness of blank paper: Measured based on JIS P 8142.
(2) Glossiness of printing: Using an offset rotary printing press (4 colors), the ink ink density of the 4-color overprinting section is black using an offset printing ink (Toyo Ink Reo Echo SOY Y) at a printing speed of 500 rpm: 1.80, indigo: 1.55, red: 1.50, yellow: 1.15 (measured with X-Rite 408 manufactured by X-Rite), and the paper surface temperature becomes 110 ° C. The surface of the obtained printed matter (4-color solid printing part) was measured based on JIS P 8142.
(3) Micro gloss unevenness: The gloss unevenness was visually evaluated in the following four stages.
(Double-circle): Very good, (circle): Good, (triangle | delta): Somewhat inferior, X: Inferior (4) Calendar runability: The degree of sticking to a calendar roll was visually evaluated in the following four steps.
A: Very good, B: Good, B: Slightly inferior, X: Inferior [Example 1]
Brazilian kaolin (trade name: Amazon Plus / CADAM, average particle size: 0.40 μm) as a pigment is mixed with 100 parts of pigment, 0.1 part of sodium polyacrylate as a dispersant is dispersed, and the solid content concentration is 70. % Kaolin slurry was prepared. To 50 parts (solid content) of this kaolin slurry (solid content), 50 parts (solid content) of heavy calcium carbonate slurry (FMT-97, average particle size 0.58 μm manufactured by PMMA TECH), solid plastic pigment (L8920 manufactured by Asahi Kasei Co., Ltd.) ) 14 parts, 12 parts of styrene / butadiene copolymer latex (glass transition temperature -2 ° C., gel content 85%), 4 parts of hydroxyethyl etherified starch (PG295 manufactured by Penford), fluorescent dye ( LANXESS BRANCOFA UW LIQUID) was added, and water was further added to obtain a coating solution 1 having a solid concentration of 64%.

The coated base paper used was a high quality paper having a basis weight of 92 g / m ² and a density of 0.75 g / cm ³ containing 7% light calcium carbonate as a filler per weight of the base paper and 100% chemical pulp as a pulp for papermaking. .

The above-mentioned base paper is coated on both sides using a blade coater at a coating speed of 500 m / min so that the coating amount per side of the above-mentioned coating liquid is 16 g / m ² , Was dried to 5.5%.

After drying, a calendar process was performed with the roll arrangement, metal roll temperature, and nip pressure shown in FIG. 1 and Table 1- (1) to obtain a coated paper for printing. At this time, the elastic roll (resin roll) has a Shore D hardness of 92 and a paper passing speed of 600 m / min.
[Example 2]
In Example 1, a coated paper for printing was obtained in the same manner as in Example 1 except that 14 parts of a solid plastic pigment (L8920 manufactured by Asahi Kasei Co., Ltd.) was changed to 5 parts.
[Comparative Example 1]
In Example 1, a coated paper for printing was obtained in the same manner as in Example 1 except that 14 parts of a solid plastic pigment (L8920 manufactured by Asahi Kasei Corporation) was changed to 1 part.
[Comparative Example 2]
In Example 1, a coated paper for printing was obtained in the same manner as in Example 1 except that 14 parts of a solid plastic pigment (L8920 manufactured by Asahi Kasei Corporation) was changed to 35 parts.
[Comparative Example 3]
In Example 1, a coated paper for printing was obtained in the same manner as in Example 1 except that the calendar process was changed to Table 1- (2).
[Comparative Example 4]
In Example 1, the coated paper for printing was obtained by the same method as Example 1 except having changed the calendar process into Table 1- (3).
[Comparative Example 5]
In Example 1, after coating and drying, surface treatment with supercalender was performed, and after re-wetting the surface of the coating layer with a rewetting liquid (sodium hexametaphosphate concentration of 0.5%), a forming roll and cast The paper is passed through a press nip formed by a drum, pressed onto a cast drum having a speed of 150 m / min and a surface temperature of 115 ° C., dried, and then released from the cast drum with a strip-off roll, thereby being cast by a rewet cast method Manufactured in the same manner as in Example 1 except that paper was obtained.

    Table 1 shows the calendar processing conditions, and Table 2 shows the evaluation results.

It is explanatory drawing which showed the calendar processing method.

Explanation of symbols

1 Metal roll
2 Elastic roll 3 High temperature metal roll

Claims (2)

In a method for producing a printing paper for coating a base paper with a coating liquid containing a pigment and an adhesive, a coating liquid containing 2 to 30 parts by weight of a plastic pigment with respect to 100 parts by weight of an inorganic pigment. After coating, the paper is passed through a calender consisting of an elastic roll and a metal roll heated to 40 ° C. or higher and lower than 100 ° C., and the coated paper having a moisture content of 5 to 8% is further applied to the elastic roll and 100 ° C. or higher. And passing through a calendar made of a metal roll heated to a temperature higher by 20 ° C. or more than the roll temperature, and finishing at a processing speed of 400 m / min or more. A method of manufacturing paper. In the calendering after coating, the elastic roll and the roll temperature are 100 ° C. or more and the roll temperature relative to the average of the linear pressure when passing through the calender consisting of the elastic roll and the metal roll heated to 40 ° C. or more and less than 100 ° C. The coated paper for printing according to claim 1, wherein the average linear pressure when passing through a calendar made of a metal roll heated to a temperature higher by 20 ° C. or more than that of 20 kg / cm is higher. Manufacturing method.

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