JPH09314984A - Inkjet recording material - Google Patents

Abstract

(57) Abstract: To provide an ink jet recording material capable of high-speed printing and having excellent ink absorption and image quality. In an inkjet recording body in which at least one recording layer containing a pigment and an adhesive is provided on a substrate, water / water is applied to the recording surface of the inkjet recording body.
An inkjet recording material having an absorption rate of 100 nl / sec or more when a solution prepared by mixing diethylene glycol at a ratio of 70:30 is dropped. Further, at least one recording layer containing a pigment and an adhesive on the substrate is used.
The ink jet recording body, wherein a layer is provided, and a gloss layer containing a polymer resin obtained by polymerizing a monomer having an ethylenically unsaturated bond is further provided on the recording layer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet recording material, and more particularly to an ink jet recording material having excellent ink absorbency and excellent image quality even when printed at high speed.

[0002]

2. Description of the Related Art In recent years, recording by an ink jet printer has been used in various fields because of its low noise, high speed recording, and easy multicoloring. As the ink jet recording material, high-quality paper designed so as to have high ink absorbability, coated paper having a surface coated with a porous pigment, or the like is applied. In addition, recently, a gloss type ink jet recording material having a gloss layer on the surface has been developed. Further, with the expansion of applications such as high-speed inkjet recording, high-definition recording image, and full-color recording, an inkjet recording material excellent in high-speed printing suitability has been demanded. In order to meet such a demand, it is necessary to increase the ink absorption rate, but it is clear that it is not enough to provide a recording layer using a conventional technique, for example, a pigment having a high porosity such as silica or alumina. Has become.

As a conventional technique for defining the ink absorption, the ink absorption capacity is defined (Japanese Patent Laid-Open No. 60-12218).
No. 8) Here, the absorbent paper is pressed against the recording paper to which the ink is attached one second later, and the maximum ink amount at which the ink does not transfer to the absorbent paper is taken as the ink absorption capacity. However, the absorption speed of the ink and the absorption capacity are not always related. In addition, when the blotter paper is pressed to see the ink transfer, the smoothness of the recording paper is also affected and the measured value itself may be unreliable. An example in which the weight of the solution absorbed in the ink receiving layer is specified (Japanese Patent Laid-Open No. 61-377).
No. 7), but the solution is absorbed for an excessive time of 10 seconds and the excess solution is removed to measure the amount of absorption, and it is not possible to discuss the ink absorption speed during actual recording. . There is also an example (JP-A-62-140878) in which the ink absorbency is defined by the dryness of the ink, and after the ink jet recording, the recording part is touched with a finger to measure the time when the ink does not adhere (Japanese Patent Laid-Open No. 62-140878) It was insufficient to evaluate chipping and high-speed printing suitability.

[0004]

DISCLOSURE OF THE INVENTION The present invention provides an ink jet recording material which is compatible with high-speed printing and has excellent ink absorbency and image quality.

[0005]

The present invention includes the following aspects. [1] In an inkjet recording body having at least one recording layer containing a pigment and an adhesive provided on a substrate, a solution in which water / diethylene glycol is mixed at a ratio of 70:30 on the recording surface of the inkjet recording body is used. An inkjet recording material having an absorption rate of 100 nl / sec or more when dropped. [2] At least one recording layer containing a pigment and an adhesive is provided on the substrate, and a gloss layer containing a polymer resin obtained by polymerizing a monomer having an ethylenically unsaturated bond is further provided on the recording layer. The inkjet recording material according to [1]. [3] At least one recording layer containing a pigment and an adhesive is provided on the substrate, and a gloss layer containing a polymer resin obtained by polymerizing a monomer having an ethylenically unsaturated bond is provided on the recording layer. In inkjet recording material,
The inkjet recording material according to [2], wherein the gloss layer is formed by applying a coating solution for a gloss layer, press-contacting with a heated mirror surface drum, and drying to finish. [4] At least one recording layer containing a pigment and an adhesive is provided on the substrate, and a gloss layer containing a polymer resin obtained by polymerizing a monomer having an ethylenically unsaturated bond is further provided on the recording layer. In inkjet recording material,
The inkjet recording material according to [2], wherein the gloss layer is coated with a coating liquid for a gloss layer, and while the coating layer is in a wet state, the gloss layer is pressed against a heated mirror surface drum and dried to finish.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION As described above, the present inventors have
As a result of earnest studies on an inkjet paper having high-speed printing suitability, as a result of the inkjet paper having at least one recording layer containing a pigment and an adhesive provided on a substrate, water / diethylene glycol was formed on the recording surface of the inkjet recording paper. When the solution in which 70 wt.% Is mixed at a weight ratio of 70:30 is added dropwise, the absorption rate is 100 nl (nanoliter) / sec or more, and more preferably 200 nl (nanoliter) / sec or more It was found that an ink jet recording paper without bleeding and having a high recording density can be obtained. There is no particular upper limit, but 10
The absorption rate can be increased up to about 000 nl (nanoliter) / sec.

Here, the absorption speed means the recording accompanying the absorption of the liquid drops onto the recording surface of the ink jet recording paper by dropping a solution prepared by mixing water / diethylene glycol in a weight ratio of 70:30. It is expressed as the volume reduced per unit time rather than the volume reduction on the surface. In the present invention, a dynamic liquid absorption tester (Fibro 1100 DAT Dynamic
The measurement was performed using an absorption tester, Matsusaka Trading Co., Ltd. As a specific measuring method, 3 μl (microliter) of a droplet is dropped through a syringe by a precision liquid pump, and the dropped droplet is magnified and observed directly from the side with a video camera, and when the droplet comes into contact with the recording surface. The images were taken at intervals of 20 msec to track the volume change of the liquid droplets. The absorption speed was calculated from the volume change of the droplet from 1 second to 5 seconds after the droplet came into contact with the recording surface. In the present invention, the absorption rate was determined as described above,
The measuring device is not limited to the above as long as it can measure by the same principle.

The solution in which water / diethylene glycol is mixed at a weight ratio of 70:30, which is used for the absorption rate measurement of the present invention, is a model of the composition of a water-based ink for ink jet recording and is used in various ink jet printers. It is suitable for grasping the absorbency of water-based ink used in. Further, it has been found that the absorption speed specified in the present invention is an important characteristic especially in a printer that performs high-speed printing. When the absorption rate of the present invention is less than 100 nl / sec,
The absorption of the water-based ink is delayed, the ink overflows on the surface and bleeds, or uneven absorption occurs, and the uniformity of solid printing in image quality deteriorates. The absorption rate specified in the present invention is
It is adjusted depending on the types of the pigment and the adhesive in the recording layer and the mixing ratio of the two. Water-based inks for inkjet printers are considered to be absorbed and held in the gaps between the pigments in the recording layer and in the micropores in the pigments. Pigments with high porosity are used, and the pigments are well bonded. By controlling the amount of the adhesive so that the gaps between the pigments are not filled up and a sufficient space is formed, the absorption rate specified in the present invention can be increased.

As the pigment of the recording layer, for example, kaolin,
Clay, calcined clay, amorphous silica, zinc oxide, aluminum oxide, aluminum hydroxide, calcium carbonate, satin white, aluminum silicate, colloidal silica,
Various publicly known pigments known in the general coated paper manufacturing field such as zeolite, sepiolite, smectite, magnesium silicate, magnesium carbonate, magnesium oxide, diatomaceous earth, styrene plastic pigment, urea resin plastic pigment, and benzoguanamine plastic pigment can be used. Among the above pigments, pigments such as amorphous silica and aluminum oxide are particularly preferably used in the sense that the structure of the recording layer is porous and has excellent ink absorbability.

Examples of the adhesive include proteins such as casein, soybean protein and synthetic protein, and various starches such as starch and oxidized starch,
Polyvinyl alcohol, cellulose derivatives such as carboxymethyl cellulose and methyl cellulose, styrene-butadiene copolymer, conjugated diene polymer latex of methyl methacrylate-butadiene copolymer, acrylic polymer latex, vinyl such as ethylene-vinyl acetate copolymer Conventionally known adhesives which are generally used for coated papers such as polymer latex are used alone or in combination. The amount of the adhesive compounded is not particularly limited, but is preferably 1 to 40% by weight, more preferably 2 to 20% by weight of the pigment.
It is adjusted in the range of about wt%. If the amount of the adhesive is small, the strength of the recording layer may be weakened, the surface may be easily scratched, and powder may drop. On the other hand, if the amount of the adhesive is large, the ink absorbency is lowered, and the desired inkjet recording suitability may not be obtained.

The recording layer is printed with a polyalkylene polyamine such as polyethylene polyamine or polypropylene polyamine, or its derivative, an acrylic resin having a tertiary amino group or a quaternary ammonium group, and a cationic resin such as diacrylamine. For the purpose of improving image water resistance, it can be added in an amount of 1 to 30 parts by weight, more preferably 5 to 20 parts by weight, based on 100 parts by weight of the pigment.

In addition, various auxiliaries such as a dispersant, a thickener, a defoaming agent, a colorant, an antistatic agent and a preservative used in the production of general coated paper are appropriately added. A recording layer composition composed of the above materials generally has a solid content concentration of 5 to 5.
Adjusted to about 65% by weight, basis weight of about 20-400 g / m
^{It is} coated on a base material of about ² in a dry weight of about 1 to 50 g / m ² , more preferably about ² to 20 g / m ² . It can be coated and dried by various publicly known coating devices such as a blade coater, an air knife coater, a roll coater, a brush coater, a chanplex coater, a bar coater and a gravure coater. Further, if necessary, smoothing treatment such as super calendering and brushing can be performed after the recording layer is dried. The base material used as the base is not particularly limited, and is a paper base material such as acidic paper or neutral paper used for general coated paper, synthetic paper, and further polyethylene, polypropylene, polyester, polystyrene. A transparent or opaque plastic film made of a synthetic resin such as, metal foils, and laminated paper such as paper and plastic film are appropriately used.

It is also possible to design the recording layer so that the coating amount is relatively small and the substrate absorbs the ink. Especially when a paper substrate is used, the ink absorbency of the paper substrate becomes important. The ink absorbency of the paper base material can be controlled by adjusting the sizing degree. When the coating amount of the recording layer is relatively small, for example, about 5 g / m ² or less,
Ink absorption tends to improve as the sizing degree decreases. The sizing degree is influenced by the type of pulp of the base paper, the beating degree of the pulp, the paper strengthening agent, the internally added sizing agent, the surface sizing agent, and the like. When a base material having poor ink absorption such as a plastic film or laminated paper is used, the recording layer itself needs to have a sufficient ink absorption capacity, and the coating amount of the recording layer is increased to some extent (for example, about 5 g / m ^2). Above) is good. A gloss layer can be further provided on the recording layer containing the pigment and the adhesive to obtain a gloss type inkjet paper. In this mode, a high-quality photo-like image can be obtained. The gloss layer is formed by adding a resin and, if necessary, a pigment. It is preferable that the gloss layer is porous or liquid-permeable so that the ink can quickly pass therethrough as long as the gloss is not hindered. In order to do so, it is advisable to select a drying condition such that the resin does not form a film as long as the gloss is not reduced. In addition, when a pigment is mixed, it is preferable to select a pigment having a small particle size, for example, about 300 nm or less in order to prevent deterioration of transparency and gloss. Such pigments include colloidal silica, alumina sol,
Examples thereof include silica sol.

As the polymer resin, a monomer having an ethylenically unsaturated bond (hereinafter referred to as an ethylenic monomer)
Polymer resins obtained by polymerizing are preferably used, and examples of such polymers include alkyl groups such as methyl acrylate, ethyl acrylate butyl acrylate, 2 ethylhexyl acrylate, lauryl acrylate, 2-hydroxyethyl acrylate, and glycidyl acrylate. Alkyl group having 1 to 18 carbon atoms, alkyl methacrylate such as methyl methacrylate, ethyl methacrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate, glycidyl methacrylate, methacrylic acid ester having 1 to 18 carbon atoms, styrene,
Examples thereof include polymers obtained by polymerizing ethylenic monomers such as α-methylstyrene, vinyltoluene, acrylonitrile, vinyl chloride, vinylidene chloride, vinyl acetate, vinyl propionate, acrylamide, N-methylolacrylamide, ethylene and butadiene. The polymer resin may be a copolymer in which two or more kinds of ethylenic monomers are used in combination, and may be a polymer or a substituted derivative of the copolymer. Incidentally, examples of the substituted derivative include a carboxyl group derivative and an alkali derivative thereof. It is also possible to polymerize the above-mentioned ethylenic monomer in the presence of colloidal silica and use it in the form of a complex by Si—O—R (R: polymer component) bond.

The method for providing the gloss layer is not limited, but a polymer resin or a copolymer resin obtained by polymerizing the above-mentioned ethylenic monomer (hereinafter collectively referred to as a copolymer resin)
The method of applying a coating liquid containing as a main component, press-contacting the heated mirror surface drum while the coating layer is in a wet state, and finishing by drying (wet cast method) is the best among the cast methods. It is preferable because an inkjet recording paper having both gloss and ink absorbency can be obtained. In this case, it is desirable to use a base material having air permeability such as a paper base material so that water can be evaporated and dried by passing through the base material. The above-mentioned copolymer resin preferably has a glass transition point of 40 ° C. or higher, more preferably 50 to 100 ° C. If the glass transition point is low, film formation will proceed excessively during drying, and the porosity of the surface will decrease, which may result in a decrease in the ink absorption rate. Further, the drying temperature is important, and if the drying temperature is too high, the film formation proceeds too much, and the porosity of the surface is reduced, so that the ink absorption rate may be reduced. On the other hand, if the drying temperature is too low, the gloss tends to be poor, and the productivity also decreases. In addition, in order to adjust whiteness, viscosity, fluidity, etc. in the coating liquid for the glossy layer, pigments, defoaming agents, colorants, electrification agents used in general printing coated paper and inkjet paper Various auxiliaries such as an inhibitor, an antiseptic and a dispersant / thickener other than those mentioned above are appropriately added.

When the gloss layer coating liquid described above is applied onto the recording layer, a blade coater, an air knife coater,
Various known coating devices such as roll coater, brush coater, champlex coater, bar coater and gravure coater can be used. In addition, preferably, as described above, while the coating layer is in a wet state, it is pressed against a heated mirror surface drum and dried to perform a cast finish. In this case, the coating amount of the gloss layer coating liquid is 0.2 to 30 in terms of dry solid content.
g / m ^2, preferably from 1 to 10 g / m ^2. If the coating amount is small, the gloss may not be sufficiently obtained, and if the coating amount is large, the ink drying property may be poor or the recording density may be lowered. After providing the glossy layer, smoothing treatment can be further performed by a super calendar or the like.

[0017]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples.
Unless otherwise specified, parts and% in the examples represent parts by weight and% by weight, respectively.

Example 1 90 parts of aluminum oxide as a pigment, 10 parts of smectite clay, 10 parts of polyvinyl alcohol as an adhesive,
10 parts of dicyandiamide-based resin as a cationic resin,
As a dispersant, 0.5 part of sodium polyphosphate was added to prepare a recording layer composition (coating liquid) having a solid content concentration of 18%.
This recording layer coating liquid was applied to a base paper having a basis weight of 100 g / m ² by an air knife coater so as to have a dry weight of 8 g / m ² , and dried to obtain an inkjet recording paper.

Example 2 90 parts of aluminum oxide as a pigment, 10 parts of smectite clay, 5 parts of polyvinyl alcohol as an adhesive, 10 parts of dicyandiamide resin as a cationic resin, and 0.5 parts of sodium polyphosphate as a dispersant were added. A recording layer composition (coating liquid) having a solid content concentration of 18% was prepared. This recording layer composition (coating liquid) was applied to a base paper having a basis weight of 100 g / m ² by an air knife coater so as to have a dry weight of 8 g / m ² , and dried to form a recording layer. On the other hand, 100 parts of a composite of a styrene-2 methylhexyl acrylate copolymer and a colloidal silica having a glass transition point of 75 ° C. (the copolymer and the colloidal silica are in a weight ratio of 50:50), 100 parts of an alkyl vinyl ether as a thickening / dispersing agent. A coating solution for a gloss layer having a solid content of 25% was prepared, which was composed of 5 parts of a maleic acid derivative copolymer and 3 parts of lecithin as a release agent. This gloss layer coating liquid is applied onto the above recording layer by using a roll coater, and immediately thereafter, it is pressed against a mirror surface drum having a surface temperature of 85 ° C., dried, and then released from the recording layer. Got The coating amount of the gloss layer at this time was 8 g / m ² in terms of solid content weight.

Example 3 A recording layer was formed in the same manner as in Example 2, and the same coating solution for gloss layer as in Example 2 was applied onto the above recording layer using a roll coater, and immediately thereafter. Surface temperature is 90 ℃
After being pressed against the mirror surface drum of No. 3, dried, and released from the mold, a gloss type inkjet recording paper was obtained. The coating amount of the gloss layer at this time was 8 g / m ² in terms of solid content weight.

Example 4 A recording layer was formed in the same manner as in Example 2, and the same coating solution for gloss layer as in Example 2 was applied onto the above recording layer using a roll coater, and immediately thereafter. Surface temperature is 80 ℃
After being pressed against the mirror surface drum of No. 3, dried, and released from the mold, a gloss type inkjet recording paper was obtained. The coating amount of the gloss layer at this time was 8 g / m ² in terms of solid content weight.

Example 5 As pigment, 90 parts of amorphous silica, 10 parts of zeolite, contact
As a binder, 5 parts of polyvinyl alcohol, cationic resin
10 parts of dicyandiamide resin as a fat and a dispersant
Then, add 0.5 parts of sodium polyphosphate to obtain a solid concentration of 18
% Recording layer composition (coating liquid) was prepared. This recording layer
Composition (coating liquid), basis weight 100 g / m ^TwoDry on the base paper
8 g / m by dry weight^TwoSo that the air knife coater
Coating and drying to form a recording layer. On the other hand, the glass transition point
Styrene-2 methylhexyl acrylate copolymer weight at 75 ° C
Composite of polymer and colloidal silica (copolymer and colloidal
Rusilica is 50:50 by weight ratio 100 parts, thickening / minute
Alkyl vinyl ether / maleic acid derivative as powder
Solid consisting of 5 parts of copolymer and 3 parts of lecithin as a release agent
A gloss layer coating liquid having a concentration of 25% was prepared. This luster
Layer coating liquid on the above recording layer using a roll coater
Immediately after coating, the surface temperature of the mirror drum of 85 ℃
After press-contacting, drying, releasing, and then gloss type ink jet
I got a recording sheet. The coating amount of the gloss layer at this time is solid content.
8g / m by weight^TwoMet.

Comparative Example 1 90 parts of aluminum oxide as a pigment, 10 parts of smectite clay, 5 parts of polyvinyl alcohol as an adhesive, 10 parts of dicyandiamide resin as a cationic resin, and 0.5 parts of sodium polyphosphate as a dispersant were added. Then, a recording layer composition (coating liquid) having a solid content concentration of 18% was prepared. This recording layer composition (coating liquid) was applied to a base paper having a basis weight of 100 g / m ² by an air knife coater so as to have a dry weight of 8 g / m ² , and dried to form a recording layer. On the other hand, a solid content concentration consisting of 100 parts of a styrene-2 methylhexyl acrylate copolymer having a glass transition point of 30 ° C., 5 parts of an alkyl vinyl ether / maleic acid derivative copolymer as a thickening / dispersing agent, and 3 parts of lecithin as a releasing agent. To prepare a coating liquid for a glossy layer of 25%. This gloss layer coating liquid is applied onto the above recording layer by using a roll coater, and immediately thereafter, it is pressed against a mirror surface drum having a surface temperature of 85 ° C., dried, and then released from the recording layer. Got The coating amount of the gloss layer at this time was 8 g / m ² in terms of solid content weight.

Comparative Example 2 A recording layer was formed in the same manner as in Example 2, and the same coating solution for gloss layer as in Example 2 was applied onto the above recording layer using a roll coater, and immediately thereafter. Surface temperature is 95 ℃
After being pressed against the mirror surface drum of No. 3, dried, and released from the mold, a gloss type inkjet recording paper was obtained. The coating amount of the gloss layer at this time was 8 g / m ² in terms of solid content weight.

Comparative Example 3 90 parts of amorphous silica as a pigment, 10 parts of zeolite, 30 parts of polyvinyl alcohol as an adhesive, 10 parts of dicyandiamide resin as a cationic resin, and 0.5 parts of sodium polyphosphate as a dispersant were added. Solid concentration 18
% Recording layer coating liquid was prepared. This recording layer coating liquid was applied to a base paper having a basis weight of 100 g / m ^{2 in} a dry weight of 8 g / m ²
Coating with an air knife coater and dried to form a recording layer. On the other hand, styrene with a glass transition point of 75 ° C
100 parts of a composite of a 2-methylhexyl acrylate copolymer and colloidal silica (the copolymer and the colloidal silica are in a weight ratio of 50:50), 5 parts of an alkyl vinyl ether / maleic acid derivative copolymer as a thickening / dispersing agent, As a release agent, a gloss layer coating liquid having a solid content concentration of 25% and containing 3 parts of lecithin was prepared. This gloss layer coating liquid is applied onto the above recording layer by using a roll coater, and immediately thereafter, it is pressed against a mirror surface drum having a surface temperature of 85 ° C., dried, and then released from the recording layer. Got
The coating amount of the gloss layer at this time was 8 g / m ² in terms of solid content weight.
Met.

Comparative Example 4 Commercially available gloss coated type inkjet paper (NS-1)
01; manufactured by Canon Inc.) was used.

Comparative Example 5 Commercially available gloss coated type inkjet paper (gloss postcard for Superfine; manufactured by Seiko Epson Corporation)
Was used. Comparative Example 6 A commercially available inkjet paper (standard inkjet paper; manufactured by Kao Corporation) was used.

The absorption speed, ink jet recording suitability, and white paper gloss of the ink jet recording paper thus obtained are summarized in Table 1. The above evaluation was carried out by the following method. [Absorption rate] Dynamic liquid absorption tester FIBRO 110
0 DAT (manufactured by FIBRO system ab) was used, 3 μl of a mixed solution of water (distilled water) / diethylene glycol = 70/30 (weight ratio) was dropped on the recording surface of the inkjet recording paper, and 1 second later The absorption rate up to 5 seconds later was measured every 20 msec, and the average value was obtained. (Unit is n
l / sec)

[Inkjet recording suitability] Printing was carried out using a high speed printing type inkjet printer, Label Printer P-400L (manufactured by Canon Uptex Co., Ltd.). (Uniformity of Solid Printed Area) Printing unevenness (dark and light unevenness) of a solid printed area of two colors of cyan ink and magenta ink was visually evaluated. A: A good level with almost no printing unevenness. ◯: There is some printing unevenness, but it is a level that does not pose a problem in practical use. Δ: The printing unevenness is slightly conspicuous, which is a problem in practical use. X: A level at which printing unevenness is remarkable and becomes a serious problem in practical use.

(Drying Property of Ink) The drying property of the ink was evaluated in the solid print portion of the two-color mixture of the cyan ink and the magenta ink. ◯: No stain at all even if touched with a finger immediately after printing. X: Soiled when touched with a finger immediately after printing. (Printing Density After Inkjet Recording) The printing density of a solid black printed portion was measured with Macbeth RD-914. [White paper gloss] Measured according to JIS-P8142.

[0031]

[Table 1]

[0032]

INDUSTRIAL APPLICABILITY The present invention is an ink jet recording material which is compatible with high-speed printing and has excellent ink absorbency and image quality. Further, it is possible to obtain an image having excellent solid uniformity and ink drying property, high recording density, and no bleeding. Further, in the aspect in which the gloss layer is provided, more excellent image and photographic-like high quality are obtained.

Claims (3)

[Claims] 1. An ink jet recording body comprising a base material and at least one recording layer containing a pigment and an adhesive, wherein water /
An inkjet recording material having an absorption rate of 100 nl / sec or more when a solution prepared by mixing diethylene glycol at a ratio of 70:30 is dropped. 2. A base material is provided with at least one recording layer containing a pigment and an adhesive, and the recording layer further comprises a gloss layer containing a polymer resin obtained by polymerizing a monomer having an ethylenically unsaturated bond. The inkjet recording body according to claim 1, which is provided. 3. A base material is provided with at least one recording layer containing a pigment and an adhesive, and a gloss layer containing a polymer resin obtained by polymerizing a monomer having an ethylenically unsaturated bond is further provided on the recording layer. The inkjet recording body according to claim 2, wherein the glossy layer is formed by applying a coating solution for the glossy layer, press-contacting with a heated mirror surface drum and drying the glossy layer.