JPH09216471A - Recording sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a thermal transfer recording sheet which can be efficiently laminated in the case of laminating a postcard by receiving a delayed tack layer which does not exhibit sticky or adhesive properties in a normal state on the other surface and exhibits the sticky or adhesive properties at the time of heating with a sublimable thermal transfer image receiving layer on one side surface of a support. SOLUTION: The thermal transfer recording sheet used by laminating integrally with a government-printed postcard has a sublimable thermal transfer image receiving layer on one side surface of a support, and a delayed tack layer, hot-melt adhesive layer or heat seal layer which exhibits sticky or adhesive properties at the time of heating on the other side surface. The recording sheet and a government-printed postcard of woodfree paper are superposed, adhered integrally by an electromagnetic heater to make it possible to be mailed. The adhesive surface of the sheet and the rear surface of the postcard are superposed, and further a flat surface-like dye resublimable barrier sheet is superposed on the image receiving layer of the sheet as one set, and may be adhesively integrated by heating.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-bonding method capable of efficiently pasting a sublimation type thermal transfer recording sheet provided with an image receiving layer for receiving a dye which is transferred by sublimation from a thermal transfer medium upon heating, with a postcard manufactured by the public. Sublimation type thermal transfer recording paper,
The present invention also relates to a method for manufacturing a laminated recording paper using this recording paper.

[0002]

2. Description of the Related Art In recent years, as a means of color hard copy, an apparatus utilizing a thermal transfer recording system has been widely used because of its advantages such as light weight, compact size, no noise, and excellent operability and maintainability. . The thermal transfer recording method is roughly classified into two types, a heat melting type, a heat transfer type and a sublimation type. In particular, the latter is excellent in reproducibility of multicolor gradation images and is printed by using a sublimation type thermal transfer type printer. The principle of such a sublimation-type thermal transfer printer is that an image is converted into an electric signal, and the electric signal is further converted into a heat signal by a thermal head.
A thermal transfer medium coated with a heat transferable dye (hereinafter referred to as an ink donor sheet) is heated, and the dye is transferred from the ink donor sheet to the image receiving layer of the thermal transfer image receiving sheet by sublimation or diffusion in the medium. It records information.

In a sublimation type thermal transfer type color printer, multi-tone image dots of single color yellow, magenta, cyan, and black are overlaid and printed in a plane-sequential manner, whereby red, green, blue, and many others are printed. An image having a neutral hue and density is formed, and an image having a natural color photographic tone is formed.

[0004] While such sublimation type thermal transfer recording is used for commercial purposes such as posters and color copies, it is used for postcards and the like for individuals with a small number of copies, and a photo-like image is formed on the communication surface. It can be provided or a message can be recorded. However, in order to obtain good image recording by sublimation-type thermal transfer recording, the image receiving layer must have flatness in accordance with its resolution, and the sublimation-transferred dye is applied to the image receiving layer so as not to blur or blur. It needs to be fixed. For this reason, it has been difficult to perform good sublimation-type thermal transfer recording on the back surface of an ordinary high-quality paper such as an official postcard.

However, when a recording paper capable of sublimation-type thermal transfer recording is used for a postcard, it is a normal government-made postcard, a postcard with a lottery number and a prepayment fee (a postcard with a yearly gift, a postcard during the hot summer, "Kamomeru"). It is a private postcard because it can not be used, etc., and it has low utility value because it can not take advantage of opportunities for lottery, and it requires the time and effort to stick a stamp even though the fee is the same as a government-made postcard, and a postal code frame, postcard or this It is necessary to give a description similar to the above to the surface.

The problem of using sublimation type thermal transfer recording and government-made postcards can be solved by integrating the recording paper on which sublimation type thermal transfer recording is performed and the postcard made by public administration with glue or adhesive, but recording after sublimation type thermal transfer recording The method of applying glue or an adhesive to the back surface of the paper and laminating it with a government-made postcard has been a very troublesome process when many postcards such as New Year's cards must be processed at the same time.

[0007]

SUMMARY OF THE INVENTION Therefore, the problem to be solved by the present invention is to provide a heat-adhesive recording paper suitable for sublimation type thermal transfer recording, and to efficiently bond the paper with a postcard. To provide a method.

[0008]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above problems, and as a result, have reached the following invention.

A printer paper-passing property having a sublimation type thermal transfer image-receiving layer on one surface of a support and a delayed tack layer which does not exhibit adhesiveness or adhesiveness under normal conditions but exhibits adhesiveness or adhesiveness when heated on the other side. Delayed tack adhesive sublimation type thermal transfer recording paper.

A printer sheet having a sublimation type thermal transfer image-receiving layer on one surface of the support and a hot melt adhesive layer on the other surface which does not exhibit adhesiveness or adhesiveness under normal conditions but exhibits adhesiveness or adhesiveness when heated. Sublimation type thermal transfer recording paper with hot melt adhesive properties.

A printer paper-passing property having a sublimation type thermal transfer image-receiving layer on one side of a support and a heat-sealing layer on the other side which does not exhibit adhesiveness or adhesiveness under normal conditions but exhibits adhesiveness or adhesiveness when heated. Sublimation type thermal transfer recording paper with heat seal adhesive property.

A laminated recording paper, characterized in that the adhesive sublimation type thermal transfer recording paper according to any one of claims 1 to 3 and the high quality paper are adhered by heating.

A laminated postcard characterized in that the high-quality paper according to claim 4 is a postcard manufactured by the government.

The sublimation-type thermal transfer recording paper having any one of delayed tack adhesive property, hot melt adhesive property and heat seal adhesive property and the back surface of the postcard are superposed to form one set, and one set or a plurality of sets are superposed. At the same time, a method for producing a laminated recording paper is characterized in that the sublimation type thermal transfer recording paper and the postcard are bonded and integrated by heating with an electromagnetic wave heater.

A sublimation type thermal transfer recording sheet having any one of delayed tack adhesive property, hot melt adhesive property and heat seal adhesive property is superposed on the adhesive surface of the postcard.
Further, a dye resublimation barrier sheet having a flat shape is superposed on the image receiving layer of the sublimation type thermal transfer recording sheet to form one set, and one set or a plurality of sets are superposed and heated by an electromagnetic wave heating device to sublimate the thermal transfer recording sheet. A method for producing a laminated recording paper, which comprises integrally bonding a postcard and an adhesive.

A method for producing a laminated recording paper according to claim 6, wherein the dye resublimation barrier sheet according to claim 6 comprises a polyolefin resin made of polyethylene or polypropylene, a release paper, or a Teflon sheet.

In the present invention, all of the convenience of postcards, ease of use of recording papers used for sublimation-type thermal transfer recording, and good sublimation-type thermal transfer recording properties are provided. It was made compatible by efficiently laminating it on a postcard. What is important here is that the recording paper having the sublimation type thermal transfer image-receiving layer originally has a laminating function,
This means that it can be attached to a postcard manufactured by a public sector without impairing the image quality of the sublimation type thermal transfer recording that has already been carried out by the laminating step or the sublimation type thermal transfer recording property for performing sublimation type thermal transfer recording from now on, and an electromagnetic wave heating device. It means that they can be easily attached using a (home microwave oven). Since no solvent such as glue or adhesive is used in the laminating process, the sublimation type thermal transfer recording property is not impaired and the inside of the electromagnetic wave heating device is not contaminated. It can be a postcard.

In the present invention, the heat-adhesive recording paper and the postcard are fixed on the long side and / or the short side of the postcard, or on the whole area of the postcard, or a binder capable of fixing the half of the area, and they are superposed. By fixing one set or a plurality of sets of heat-adhesive recording sheets and postcards and heating them with an electromagnetic wave heating device (microwave oven), it becomes possible to perform bonding very efficiently.

The heat-adhesive recording paper of the present invention can be laminated with a postcard before sublimation type thermal transfer recording.
It is also possible to attach it to a postcard after sublimation thermal transfer recording.

In the heat-adhesive sublimation type thermal transfer recording paper and the postcard laminated recording paper produced in the present invention, not only the postcard and the recording paper are isometric,
For the purpose of neatly aligning the edges of postcards and for preventing the postcards and recording papers from adhering (blocking) to each other at the edges, the postcards and recording papers have a longitudinal dimension of 14 mm.
It is easy to use if it is cut to a size of 0 mm to 154 mm and a lateral dimension of 90 mm to 107 mm. If the size is larger or smaller than this size, the standard as a postcard is not satisfied, which is not preferable. In order to obtain such a size,
Cutout and postcard lamination To eliminate unnecessary adhesion on all sides (edges) of recording paper, after the recording paper and the postcard have been attached, the entire circumference of the postcard is punched out to a specified size and punched out. It can be a postcard laminated recording paper.

The base paper preferably used for the support of the present invention is mainly composed of wood pulp and pigment. As wood pulp, chemical pulp such as LBKP, NBKP,
GP, PGW, RMP, TMP, CTMP, CMP, C
Includes mechanical pulp such as GP, pulp such as waste paper pulp such as DIP, etc., and if necessary, various additions of conventionally known pigments, binders, sizing agents, fixing agents, retention agents, cationizing agents, paper strength agents, etc. By mixing one or more agents, a support can be produced by various apparatuses such as a fourdrinier paper machine, a round paper machine, a twin wire paper machine, and the like, and can be made into an acidic, neutral, or alkaline paper. Further, the base paper may be subjected to on-machine treatment with a calender device including a metal roll and a synthetic resin roll. At that time, off-machine treatment may be performed, and after treatment, calender treatment may be further performed with a machine calendar, a super calendar or the like to control flatness.

As the filler, for example, light calcium carbonate, heavy calcium carbonate, kaolin, clay, talc,
Of calcium sulfate, barium sulfate, titanium dioxide, zinc oxide, zinc sulfide, satin white, aluminum silicate, diatomaceous earth, calcium silicate, magnesium silicate, synthetic silica, aluminum hydroxide, alumina, lithopone, zeolite, magnesium carbonate, magnesium hydroxide White inorganic pigment, styrene plastic pigment,
Examples thereof include acrylic plastic pigments, polyethylene, microcapsules, urea resins, and organic pigments such as melamine resins.

Examples of the sizing agent include rosin sizing agents for acidic papermaking, modified rosin sizing agents for neutral papermaking, and AK.
D, ASA, cationic polymer type sizing agent and the like can be mentioned.

Further, on the surface, inorganic pigments such as silica, alumina, titanium oxide, kaolin, clay, talc, zinc oxide, barium sulfate, starch granules, cellulose powder, melamine resin microparticles, guanamine resin microparticles, urethane resin. Fine particles, epoxy resin particles, silicone resin particles, vinyl resin particles and other organic pigments, vinyl resin hollow particles, melamine resin hollow particles and other hollow pigments, starch, casein, gelatin, polyvinyl alcohol, carboxymethyl cellulose, hydroxy Water-soluble resins such as ethyl cellulose, resin emulsions such as styrene-butadiene type, acrylic type and vinyl acetate type, dispersants, cross-linking agents, dyes, fluorescent agents, ultraviolet absorbers, antioxidants, preservatives, surfactants, defoamers. Coating including agents, thickeners, conductive agents, etc. A gravure coater, roll coater, rod coater, die coater, curtain coater, which was coated by such as a blade coater may be used.

In the present invention, an intermediate layer may be provided between the base paper and the image receiving layer, if necessary, in order to enhance heat insulation and cushioning. In order to enhance the heat insulating property, for example, an intermediate layer containing thermally expandable hollow particles or a capsule-shaped hollow polymer is provided. Among the heat-expandable hollow particles, there are hollow particles having a thermoplastic material such as vinylidene chloride-acrylonitrile copolymer as a wall material, and a heat-expandable gas such as propane, n-butane, or isobutane is contained inside the particles. It is a hollow particle. The capsule-shaped hollow polymer is a polymer in which a resin such as styrene-acryl is used as a wall material, water is contained therein, and water evaporates during drying to form hollow particles.

In order to form the intermediate layer, the above hollow particles are mixed with the binder resins listed below and used. As the binder resin, styrene-butadiene-acryl copolymer, polyurethane, acrylic, vinyl chloride, vinyl acetate, vinyl chloride-vinyl acetate copolymer, polyvinyl alcohol, polyvinyl butyral, alkyd, polyester, resin such as starch alone, Alternatively, two or more kinds can be used as a mixture.

In order to enhance the cushioning property, for example, silicone rubber, butadiene rubber, styrene / butadiene rubber, high styrene / butadiene rubber, butyl rubber, fluororubber, nitrile rubber, chloroprene rubber,
A rubber elastic body such as acrylic rubber, urethane rubber, isoprene rubber, natural rubber, chlorosulfonated polyethylene, chlorinated polyethylene, chlorinated butyl rubber, polysulfide rubber, epichlorohydrin rubber, propylene oxide rubber, ethylene-vinyl acetate rubber, or 2 Seeds or more can be added to the intermediate layer.

The sublimation type thermal transfer image receiving layer used in the present invention has a dyeing property to a dye which is sublimated and transferred to the support by heat, and the dye dye constituting the sublimation type thermal transfer image receiving layer. As the adhesive binder resin, any binder resin having a strong interaction with the dye and capable of stably diffusing the dye into the resin can be preferably used.

For example, as those having an ester bond, polyester resin, polyacrylic ester resin,
Polycarbonate resin, polyvinyl acetate resin, styrene acrylate resin and the like; polyurethane resin having a urethane bond; polyamide resin (nylon) having an amide bond; urea resin having a urea bond Further, as the other one having a high polarity bond, polycaprolactone resin, polystyrene resin, polyvinyl chloride, polyacrylonitrile resin, etc. can be used, or at least one of the constitutional units of the above resins is the main component. And a copolymer, for example,
It can also be used as a vinyl chloride-vinyl acetate copolymer, a styrene-butadiene copolymer, and the like, and the above resins can be used alone or in combination of two or more.

The above resin is dissolved or emulsified and dispersed in an organic solvent or water and used as an emulsion, such as a gravure coater, a roll coater, a rod coater, a die coater, a curtain coater, a blade coater, an air knife coater, and a slide hopper. Can be applied on the intermediate layer. The dry coating amount of the sublimation type thermal transfer image receiving layer is preferably in the range of 0.5 to 15 g / m ² . Further, if necessary, the intermediate layer may be subjected to an easy adhesion treatment to improve the adhesion with the sublimation type thermal transfer image receiving layer.

As a method for making the intermediate layer easily adhesive, a method of modifying the intermediate layer by corona treatment, plasma treatment, or the like, or coating a resin having good adhesiveness on both the intermediate layer and the sublimation type thermal transfer image-receiving layer There are things to do. As such a resin, any resin having good adhesiveness to both layers can be preferably used, but, for example, acrylic resin, vinyl chloride resin, vinyl acetate resin, urethane resin, styrene butadiene resin, Or the copolymer etc. can be illustrated.

In the present invention, a releasing agent may be added to the sublimation type thermal transfer image-receiving layer for the purpose of preventing blocking. Specific examples of the releasing agent include waxes such as higher fatty acids or esters thereof, amides or metal salts thereof, shellac wax, montan wax, carnauba wax, polyethylene wax and Teflon powder; fluorine-based and phosphoric ester-based waxes. Surfactants; silicone oil and the like can be mentioned. Further, as the silicone oil, modified silicone oil such as amino-modified silicone, epoxy-modified silicone, alkyd-modified silicone, polyester-modified silicone and the like are also used.
If necessary, a curable silicone compound can also be used as the silicone compound. Curable silicone compounds include reaction curable, ionizing radiation curable,
Catalyst curing type and the like can be mentioned.

Further, if necessary, additives such as dyes, pigments, wetting agents, defoaming agents, dispersants, antistatic agents, fluorescent whitening agents, ultraviolet absorbers, and light stabilizers are added to the sublimation type thermal transfer image-receiving. It can also be contained in the layer. In particular, with respect to pigments, inorganic particles represented by silica, alumina, titanium oxide, calcium carbonate, kaolin, clay, zinc oxide, barium sulfate and the like can be added.

The coating liquid constituting the delayed tack layer used in the present invention is an acrylic resin, a vinyl chloride resin,
Vinyl acetate resin, styrene / acrylic copolymer resin,
Styrene / butadiene copolymer resin, polystyrene resin,
One or several crystalline (solid) plasticizers such as dicyclohexyl phthalate, diphenyl phthalate, N-cyclohexyl-p-
Toluenesulfonamide, o / p-toluenesulfonamide and the like are included. The delayed tack layer obtained by applying this coating solution and drying it below the melting point of the plasticizer is dry to the touch under normal conditions, and can be passed through ordinary sublimation thermal transfer recording printers without problems. However, once heated above the melting point of the plasticizer, the delayed tack layer is plasticized and becomes tacky. For this reason, high quality paper,
It can be bonded to glass, metal, synthetic resin sheet, wood, etc. by light pressure, and the adhesiveness generated here remains even if the plasticizer is recrystallized. 3 in the delayed tack layer
It is possible to improve the paper passing property of the printer by including a pigment in an amount of ˜50 wt%.

The resin constituting the hot melt layer used in the present invention is generally a thermoplastic material (100% solids) that melts in the temperature range of 60 ° C. to 180 ° C., and the polymers, resins and waxes shown below are used. Is used. Alkyd (modified polyester), asphalt and coal tar bluish, coumarone-indene resin, rosin and its derivatives, terpene resin, wax (mineral, vegetable and petroleum), ethylene / ethyl acrylate copolymer, ethylene / vinyl acetate Copolymer, polyethylene, polyvinyl acetate and its copolymer, polycarbonate, polystyrene and its copolymer, polystyrene and its copolymer, polypropylene, polyvinyl ether, polyamide, polyester (thermoplastic), phenoxy resin (plasticization) , Polyisoprene, polyurethane, thermoplastic elastomer (SBS, SIS, SEBS
Resin) is used. The hot melt adhesive basically contains a resin having the following three functions. High molecular weight polymers that impart viscosity to the melt and cohesiveness to the solid; synthetic elastomers that increase tackiness, elasticity, and strength; and synthetic or natural resins that impart viscosity and flow to promote wettability. . It may also contain waxes which reduce the cost and lower the viscosity of the mixture and make it easier to apply. The hot melt layer can be applied as a solvent solution or as an emulsion by coating and drying, or by hot melt extrusion. By including the pigment in the hot melt layer of the present invention in a maximum of 50% by weight, it is possible to improve the paper feedability of the printer.

The heat seal coating agent constituting the heat seal layer used in the present invention is “All about Converting” (published by Processing Technology Research Institute, 1993, P3
This is a so-called heat seal coating agent in a narrow sense as described in (51) to (5), and is different from a solventless hot melt coating resin. For example, as the constituent resin, an organic solvent solution such as polyolefin resin, polyester, ethylene / vinyl acetate copolymer resin, polyacrylate, vinyl chloride acetate, ethylene / acrylic acid copolymer resin, or an aqueous dispersion solution is used. Can be A heat-seal layer obtained by preparing a coating solution using this resin and coating it, and drying it at a temperature higher than the minimum film-forming temperature is dried in a normal state without stickiness even when touched with a finger. However, it is possible to pass the paper through a general sublimation type thermal transfer recording printer without any problem, but once heated above the melting point, the heat seal layer is plasticized and becomes sticky, and fine paper, glass, metal, synthetic resin sheet It can be attached to wood, etc. with a light pressure, and the adhesiveness generated here remains even after recooling. The heat seal layer can be applied as a solvent solution or as an emulsion and dried.

The delayed tack layer, hot melt layer and heat seal layer (hereinafter collectively referred to as heat adhesive layer) of the present invention may further contain other additives such as organic pigments, inorganic pigments, matting agents and slip agents. , Dispersant, thickener, fluidity improver, defoamer, foam suppressor, release agent, foaming agent, penetrant,
Coloring dyes, coloring pigments, fluorescent whitening agents, ultraviolet absorbers, antioxidants, preservatives, anti-binders, water-proofing agents, wet paper strength enhancers, dry paper strength enhancers, anti-aging agents, etc. You can also. Further, an antistatic agent can be added to the heat-adhesive layer for the purpose of preventing static electricity. As the antistatic agent, a surfactant such as a cationic surfactant (fourth)
Quaternary ammonium salts, polyamine derivatives and the like), anionic surfactants (such as alkyl phosphate), amphoteric ionic surfactants and nonionic surfactants.

The coating amount of the heat-bonding layer varies depending on the bonding method, but it is preferably in the range of 5 to 40 g / m ^{2 for} the purpose of ensuring good adhesion and sublimation type thermal transfer recording property. If the coating amount of the heating adhesive layer is smaller than this range,
Lamination may be weakened due to insufficient adhesiveness, or sublimation type thermal transfer recording performance may be degraded because a large amount of energy is required for lamination. If it is larger than this range, it not only hinders the running of the paper but also causes a cost increase economically.

The method for applying the heat-adhesive layer of the present invention includes, for example, a gravure coater, a gravure offset coater, a bar coater, a roll coater, an air knife coater, a U comma coater, an AKKU coater, a smoothing coater, a micro gravure coater and a reverse roll. Any coating method such as a coater, a four or five roll coater, a blade coater, a dip coater, a falling curtain coater, a slide coater, a die coater, and a melt extrusion die may be used.

In the sublimation type thermal transfer recording paper having a heat-adhesive layer of the present invention, a permeation preventive layer is provided in contact with the support for the purpose of further preventing the resin forming the heat-adhesive layer from permeating into the support. May be. The role of the penetration preventing layer is to prevent the resin forming the heating adhesive layer from seeping into the support and to impart smoothness when the heating adhesive layer is provided. The anti-penetration layer that can be used in the present invention can be provided by a natural polymer or a synthetic polymer, and examples thereof include the following substances.

As natural polymers and semi-synthetic polymers, modified starch compounds such as starch, oxidized starch, etherified starch, dialdehyde starch, esterified starch, alginic acid compounds such as sodium alginate and propylene glycol alginate, casein, Examples thereof include modified cellulose compounds such as gelatin, pullulan, dextran, chitin, chitosan, gum latex, gum arabic, funori, natural gum, dextrin, methylcellulose, ethylcellulose, hydroxycellulose, and carboxymethylcellulose. As synthetic polymers, fully or partially saponified polyvinyl alcohol,
Acetoacetylated polyvinyl alcohol, esterified product of polyvinyl alcohol and polycarboxylic acid, carboxy-modified polyvinyl alcohol, sulfonic acid-modified polyvinyl alcohol, olefin-modified polyvinyl alcohol, nitrile-modified polyvinyl alcohol, amide-modified polyvinyl alcohol, pyrrolidone A modified polyvinyl alcohol compound such as a modified polyvinyl alcohol,
Polyacrylic acid compounds such as polyethylene glycol, polyacrylic amide, polyacrylic acid, ammonium polyacrylate, sodium polyacrylate, polyvinylpyrrolidone, polyethyleneimine, polyvinyl ether, polymaleic acid copolymer, polyacrylamide, water-soluble alkyd resin And the like.

Although not a water-soluble polymer in a strict sense, it is a styrene / butadiene copolymer, a butadiene / methacrylate copolymer, or an acrylonitrile / butadiene /
An emulsion obtained by dispersing a synthetic polymer such as latex acrylate in water can be used instead of the water-soluble polymer solution. As the water-soluble polymer, the above-mentioned polymers may be used alone or as a mixture to form an aqueous solution if necessary.
A dispersant or the like can be used in combination. The penetration preventing layer can be formed by melt lamination of polyolefin resin or dry lamination as long as it prevents the resin or solvent from penetrating into the support.

When the heat-adhesive sublimation thermal transfer recording paper of the present invention and high-quality paper, especially postcards, are laminated together, the recording material (postcard and recording material) facing the image-receiving surface by re-sublimation of the dye in the image-receiving layer by heating. In the case of lamination, a barrier sheet for dye sublimation can be provided for the purpose of preventing stains on the address surface of a postcard if they are superposed in the same direction. The barrier sheet is not particularly limited as long as it is not melted by heating, and high-quality paper, coated paper, laminated paper, release paper, nonwoven fabric, synthetic resin sheet (polyester sheet, polypropylene sheet, polyethylene sheet, polyvinyl chloride sheet, Teflon). Sheet, cellophane sheet, etc.) can be used. Among them, polyolefin resin sheets made of polyethylene and polypropylene, release papers and Teflon sheets not only suppress resublimation of dyes, but also provide good separation between the barrier sheet and the sublimation type thermal transfer recording image receiving surface, and further image bleeding in the image receiving layer. It turned out that it has the effect of suppressing. This is considered to be due to the characteristics of the polyolefin resin not heated by the electromagnetic wave heating device.

[0044]

The heat-adhesive sublimation thermal transfer recording paper of the present invention is
In producing a laminated recording paper, a sublimation type thermal transfer recording sheet having an image receiving layer of a sublimable dye originally has a laminating function, and the image quality of the sublimation type thermal transfer recording already performed by the laminating step by an electromagnetic wave heating device or This means that it can be efficiently laminated with other supports, especially (official) postcards, without impairing the sublimation type thermal transfer recording property for performing sublimation type thermal transfer recording. That is, since no solvent such as glue or adhesive is used in the laminating step, the sublimation type thermal transfer recording property such as blurring or bleeding is not impaired. Further, a heat-adhesive sublimation-type thermal transfer recording sheet having a sublimation-type image-receiving layer for thermal transfer on one surface of the support and a heat-adhesive layer on the other side, which has a paper-passing property to a printer and does not normally exhibit tackiness or adhesiveness. Since it may be cut to a predetermined size, it is easy to align the postcard on the adhesive surface, and it is possible to easily align it by aligning the edge surface. It will not get dirty, and will make epoch-making quick and accurate bonding easy. By the method of the present invention, it is possible to create a unique and beautiful official postcard by adhering it to the back surface of the official postcard or prepaid postcard with lottery number.

[0045]

EXAMPLES The present invention will be described below with reference to examples of the present invention, but the present invention is not limited to these examples.
In addition, "parts" and "%" shown in the examples represent parts by weight and% by weight, unless otherwise specified.

Preliminary operation The base paper for the support was anionic polyacrylamide (Stargum A15) for 100 parts of wood pulp consisting of 70 parts of LBKP beaten with a double disc refiner to a freeness of 400 mlcsf and 30 parts of freeness of 450 mlcsf. , Hoshikou Kagaku Co., Ltd.) 0.3 parts, cationic starch (Kate F, Oji National Co., Ltd.) 2.0 parts
Parts, and 0.4 parts of an alkyl ketene dimer size agent (Harcon 11-2, manufactured by Dick-Hercules),
0.3% of polyamide-polyamine-epichlorohydrin resin (Kaymen S25, manufactured by Dick-Hercules)
A pulp paper having a basis weight of 110 g / m ² was produced with a fourdrinier paper machine at a paper making speed of 100 m / min by using the paper stock added in part.
The dried paper was subjected to a tab size treatment with a polyvinyl alcohol aqueous solution having a concentration of 3%, dried, and then smoothed with a super calendar so that the Beck smoothness was 300 seconds or more.

An image receiving layer coating solution having the following composition was prepared on the obtained pulp paper and coated with an air knife coater so that the dry coating amount was 7 g / m ² to obtain a sublimation type thermal transfer image receiving paper. .

[Preparation of Image-Receiving Layer Coating Liquid] Polyester emulsion (Vylonal MD-1220: Toyobo) 60 parts Polyerylene emulsion (Hydrin G-314: Chukyo Yushi) 15 parts Colloidal silica as inorganic fine particles (Snowtex O: Nissan Chemical Co., Ltd.) ) 25 parts Surfactant 5 parts

Example 1 On the opposite side of the image-receiving paper obtained in the preliminary operation, a heat-sensitive adhesive (delayed tack layer, Toyo Ink, Heat Magic DW2000, solid content: 52%) was used as a delayed tack layer, and calcium carbonate was used as a pigment in a solid weight%. 20% of the solid content is 20 g /
m ² was applied and dried for 20 seconds under warm air at 45 ° C. to provide a delayed tack layer to obtain a sublimation type thermal transfer recording sheet having a delayed tack heat adhesive property. This delayed tack heat-adhesive sublimation type thermal transfer recording paper was cut into a size of a postcard, recorded with a sublimation type thermal transfer printer, and then the back surface of a government-made postcard was superposed on the adhesive layer to form one set, and 20 sets were bundled. 3mm ABS on top and bottom
After covering with a resin plate and fixing with a rubber band, it was put in an electromagnetic wave heater (household microwave oven, 500 w) and heated for 30 seconds to obtain a postcard laminated recording paper.

Example 2 A synthetic rubber-based hot-melt type pressure-sensitive adhesive (made by Konishi, as a hot-melt layer was formed on the opposite surface of the image-receiving paper obtained in the preliminary operation.
MU74) was applied by hot gravure to a coating amount of 50 g / m ² and then cooled to form a hot melt layer, to obtain a hot melt heat-adhesive sublimation type thermal transfer recording paper. This hot melt heat-adhesive sublimation type thermal transfer recording paper was cut into a size of a postcard, recorded with a sublimation type thermal transfer printer, and then the back surface of a government-made postcard was superposed on the adhesive layer to form one set, and 20 sets were bundled. 3mm ABS on top and bottom
After covering with a resin plate and fixing with a rubber band, it was put in an electromagnetic wave heater (household microwave oven, 500 w) and heated for 30 seconds to obtain a postcard laminated recording paper.

Example 3 An ethylene / acrylic acid copolymer resin (Aquatex Co., Ltd.) was used as a heat-sealing layer on the opposite surface of the recording paper obtained by the preliminary operation.
AC2010, manufactured by Chuo Rika Kogyo Co., Ltd., solid content: 45%), applied to a total solid content of 15 g / m ² , dried under hot air at 110 ° C. for 20 seconds, provided with a heat seal layer, and heat-sealed heat adhesion. Sublimation type thermal transfer recording paper was used. This heat seal heat-adhesive sublimation type thermal transfer recording paper is cut into a size of a postcard, and after recording with a sublimation type thermal transfer printer, the back surface of a government-made postcard is superposed on the adhesive layer to form a set,
In a state where 20 sets are bundled, the upper and lower surfaces are covered with 3 mm ABS resin plate, fixed with rubber bands, put in an electromagnetic wave heater (household microwave oven, 500 w) and heated for 30 seconds to record postcards. I got the paper.

Example 4 In Example 1, when performing adhesion by electromagnetic wave heating,
A postcard laminated recording paper was obtained in the same manner as in Example 1 except that a high-quality paper having a basis weight of 40 g / m ² was arranged facing the image receiving layer of each heat-sealing heat-adhesive sublimation type thermal transfer recording paper.

Example 5 In Example 2, when performing adhesion by electromagnetic wave heating,
A postcard laminated recording paper was obtained in the same manner as in Example 2 except that a polyester sheet having a basis weight of 30 g / m ² was arranged facing the image receiving layer of each heat-sealing heat adhesive sublimation type thermal transfer recording paper.

Example 6 In Example 3, when performing bonding by electromagnetic wave heating,
A postcard laminated recording paper was obtained in the same manner as in Example 3 except that a silicone release paper having a basis weight of 40 g / m ² was arranged facing the image receiving layer of each heat-sealing heat-adhesive sublimation type thermal transfer recording paper.

Example 7 In Example 1, when performing bonding by electromagnetic wave heating,
A postcard laminated recording paper was obtained in the same manner as in Example 1 except that a high-density polyethylene sheet having a basis weight of 50 g / m ² was placed facing the image receiving layer of each heat-sealing heat-adhesive sublimation type thermal transfer recording paper.

Example 8 In Example 2, when performing adhesion by electromagnetic wave heating,
A postcard laminated recording paper was obtained in the same manner as in Example 2 except that a polypropylene sheet having a basis weight of 50 g / m ² was arranged facing the image receiving layer of each heat-sealing heat adhesive sublimation type thermal transfer recording paper.

Example 9 In Example 3, when performing adhesion by electromagnetic wave heating,
A postcard laminated recording paper was obtained in the same manner as in Example 3 except that a Teflon sheet having a basis weight of 50 g / m ² was arranged facing the image receiving layer of each heat-sealing heat adhesive sublimation type thermal transfer recording paper.

Comparative Example 1 In a preliminary operation, the basis weight of the base paper for support was set to 200 g / m ²
Then, the image receiving layer coating liquid shown in the preliminary operation was applied in the same manner to obtain a sublimation type thermal transfer recording paper for comparison.

Comparative Example 2 A pressure-sensitive adhesive (Ricabond AP-37 manufactured by Chuo Rika Kogyo Co., Ltd.) was provided as a pressure-sensitive adhesive layer on the opposite surface of the recording paper obtained in the preliminary operation so that the dry weight was 20 g / m ^2. An adhesive sublimation type thermal transfer recording paper was covered with a commercially available release paper.

Comparative Example 3 The release paper of the pressure-sensitive adhesive sublimation type thermal transfer recording paper of Comparative Example 2 was peeled off, and postcards made by the government were overlaid and stuck together to obtain a postcard stuck recording paper.

Comparative Example 4 A commercially available postcard is used as a comparative example.

The recording papers obtained in Examples and Comparative Examples were tested by the following method. The results are shown in Tables 1 and 2.

[Test Method] 1) Printer Suitability The recording sheets obtained in Examples and Comparative Examples were cut into official postcard sizes, 1000 color images were printed, and the color due to paper feeding trouble was confirmed. The suitability of the printer was judged based on the total number of sheets in which disorder was generated and the number of sheets discharged by jamming. Naturally, the smaller the number, the better.
4 color ink donor sheet (SU3-
11C4H, manufactured by Mitsubishi Electric Corporation, and after applying the necessary timing marks, a sublimation thermal transfer printer (S36
00-30, manufactured by Mitsubishi Electric Co., Ltd.) to print a full-color image.

2) Printability In the postcard-bonded recording paper after printing obtained in Examples and Comparative Examples, the sublimation type thermal transfer recording portion was observed with a magnifying glass. The sublimation type thermal transfer recording part has no bleeding at all, and the recording paper with sharpness has excellent printability, and there is a very small amount of bleeding, and if you can see that the sharpness is impaired if you pay attention, the printability is good, When the image lacked sharpness but the image was sufficiently sharp, printability was average, and when bleeding occurred and the sublimation type thermal transfer recording performance was poor, printability was poor.

3) Waviness After printing with a sublimation type thermal transfer recording printer, the waviness was visually judged on the recording surface after being attached to a postcard manufactured by a government. What does not matter in quality is the evaluation of A and B. A: The swell is not recognized, and the appearance is not spoiled. B: The swell is small and does not spoil the aesthetic appearance. C: The undulation is large, and the appearance is impaired.

4) Adhesiveness The adhesive strength of the postcard laminated recording papers obtained in Examples and Comparative Examples was measured by a Tensilon universal tensile tester. Tensile strength (adhesive strength) is 200 gf / 25 mm
If it is above, it can be said that the pasting is practically acceptable. In Comparative Example 2, the release paper was peeled off and bonded to a postcard.

5) Lamination Stability With respect to the postcard laminating recording papers obtained in Examples and Comparative Examples, the adhesive state of all postcard laminating recording papers obtained from the test was observed. The case where the entire surface of the heat-adhesive recording paper is stuck is 100, and the case where the long piece of the heat-adhesive recording paper is stuck but there is a float on the short side is 90, and the short piece of the heat-adhesive recording paper is The case where the heat-adhesive recording sheets are stuck together but has a float on the long side is 80, and the case where both the short side and the long side of the heat-adhesive recording paper are floated is 60. If there is a float, evaluate it with 80, and in each case, multiply the evaluation by 1 if all the sets are pasted together, and if some of all the sets are pasted together, rate the evaluation. {Example: out of 10 sets, when 2 sets have float inside, 80 × (1−0.2) = 64} The final evaluation point was calculated. Those with an evaluation score of 95 or higher were judged to have excellent laminating stability, those with an evaluation score of 85 or higher were averaged, and those with a smaller evaluation score were judged to be inferior. Regarding the postcard laminated recording paper obtained in Comparative Example 3, 20 sheets were continuously produced and observed.

6) Dye Transferability With respect to the postcard laminated recording papers obtained in Examples and Comparative Examples, the postcard address surface of all postcard laminated recording papers obtained by the test was observed. Postcard laminated recording paper 2
Per 5 sheets, if the postcard addressing surface is not dirty at all, deducting 0 from it is 100 points, if it is slightly dirty it is -1 point per sheet, if it is clearly dirty it is 1 sheet per The dye transferability was evaluated by subtracting -2 points from the case where the address was soiled to the extent that it hindered the readability of the address, and subtracting 4 points from each of the 100 points.

7) Printability after lamination The sublimation-type thermal transfer recording was not performed on the recording papers (heat-adhesiveness) obtained in the examples and comparative examples, and the method described in each of the examples and comparative examples was used for official postcards. Pasted together. Subsequent to aging for one day after bonding, sublimation type thermal transfer recording was performed and the recorded portion was observed. There is no blur in the sublimation type thermal transfer recording part,
When the recording paper with the same sharpness as the non-laminated recording paper is pasted, the printability is excellent, and when it is slightly lacking in sharpness as compared with the non-laminated recording paper, but the image is sufficiently retained. The printability after laminating was judged to be poor when the sublimation-type thermal transfer recording property was inferior because the printability after laminating was normal, and talumi or bleeding occurred. In Comparative Example 2, the release paper was peeled off and laminated.

8) Curl Property A heavy-color solid printing (heat-adhesion type) recording paper was cut into a size of a postcard, which was attached to a postcard by the methods described in Examples and Comparative Examples, and after attachment, 20 ° C. The curl was measured by standing still on a flat desk under the condition of relative humidity of 65%. The curl is represented by the average value of the lifting heights at the four corners,
If the curl average value is less than 3 mm, the curl is excellent, and 3 mm
Curl property was up to 7 mm, and curl of more than 7 mm was a problem when passing through a printer, so it was judged as poor curl property. For Comparative Examples 1 and 4 which originally do not have a laminating function, curl was measured as it was.

9) Laminating position controllability In the case of postcard laminating, a recording paper and a government-made postcard are overlaid and edge-aligned so that the position control can be easily performed so that both pieces fit exactly. However, even if the edges were aligned, they were adhered to each other once they were overlapped, and the ones whose bonding positions could not be changed were judged to have poor control of the bonding position.

[0072]

[Table 1]

Evaluation: As is clear from the examples, one side of the support of the present invention has a sublimation type image recording layer for thermal transfer recording, and the other side thereof has a heat adhesive layer (delay tack layer, hot melt layer, heat seal). The adhesive sublimation type thermal transfer recording paper having a layer) has good suitability for passing through a printer and good printability in sublimation type thermal transfer recording before and after lamination. The laminated recording paper can be easily obtained by using the heat-adhesiveness inherent in this recording paper and superposing it on another paper (for example, a postcard manufactured by the government) to perform heat treatment. Such bonding can be performed by using an electromagnetic wave heating device (household microwave oven) by combining a plurality of sets, which is very efficient and has good curling properties even after bonding. I have. When a plurality of sets of sublimation-type thermal transfer recording paper and postcards are pasted together by this method, the dye may be slightly transferred to the address surface of the postcard, but by using a barrier sheet together, good transfer can be achieved without any migration. Achievement can be achieved. Further, when the material of the barrier sheet is a polyolefin resin such as polyethylene or polypropylene, a silicone release paper, or Teflon, the image-receiving layer of the sublimation type thermal transfer recording paper can keep good recording property even after being laminated. found. Compared to the case where high-quality paper is used as a barrier sheet, it has better print recording properties because these materials are not overheated by electromagnetic heating and printing is not affected, and It is thought to prevent only migration.

On the other hand, as is clear from the comparative examples, when an adhesive showing an adhesive property in a normal state is used on the opposite surface of the image receiving layer for sublimation type thermal transfer recording, the alignment at the time of sticking with a postcard becomes very large. In addition to the difficulty, the printability also deteriorates. Further, in Comparative Example 1 which does not have an adhesive layer, it cannot be pasted with a postcard, and the chance of lottery such as a New Year's card with a New Year's card is lost.

[0075]

EFFECT OF THE INVENTION By using the binder for electromagnetic wave heating for sticking postcards of the present invention, a heat-adhesive recording paper and a postcard are heated by an electromagnetic wave heating device (microwave oven),
It can be easily printed with a sublimation type thermal transfer printer, can be attached to a government-made postcard, and can easily make a beautiful postcard, and its utility value is great.

Claims (8)

[Claims] 1. A printer through which a sublimation type thermal transfer image-receiving layer is provided on one surface of a support, and a delayed tack layer which does not exhibit adhesiveness or adhesiveness in a normal state but exhibits adhesiveness or adhesiveness when heated is provided on the other surface. Delayed tack adhesive sublimation type thermal transfer recording paper with paper quality. 2. A printer having a sublimation-type thermal transfer image-receiving layer on one surface of a support, and a hot-melt adhesive layer on the other surface, which does not exhibit adhesiveness or adhesiveness in a normal state but exhibits adhesiveness or adhesiveness when heated. Sublimation-type thermal transfer recording paper with hot-melt adhesive properties that allows paper to pass through. 3. A printer sheet having a sublimation-type thermal transfer image-receiving layer on one surface of a support, and a heat-sealing layer on the other surface, which does not exhibit adhesiveness or adhesiveness in a normal state but exhibits adhesiveness or adhesiveness when heated. Substant heat transfer recording paper with heat-seal adhesive properties. 4. A laminated recording paper, characterized in that the adhesive sublimation thermal transfer recording paper according to any one of claims 1 to 3 and a high-quality paper are adhered by heating. 5. A laminated postcard, wherein the high-quality paper according to claim 4 is a postcard manufactured by the government. 6. A sublimation type thermal transfer recording sheet having any one of delayed tack adhesive property, hot melt adhesive property and heat seal adhesive property and the back surface of a postcard are overlapped to form one set, and one set or a plurality of sets are provided. And a sublimation-type thermal transfer recording paper and a postcard are adhered and integrated by superposing them on each other and heating them with an electromagnetic wave heater. 7. An image receiving layer of a sublimation type thermal transfer recording sheet, wherein an adhesive surface of a sublimation type thermal transfer recording sheet having any one of delayed tack adhesiveness, hot melt adhesiveness and heat seal adhesiveness is overlapped with a back surface of a postcard. Faced with a flat dye re-sublimation barrier sheet, they form a set,
A method for producing a laminated recording paper, characterized in that one set or a plurality of sets are superposed and heated by an electromagnetic wave heater to bond and sublimate the sublimation type thermal transfer recording paper and the postcard. 8. The method for producing a laminated recording paper according to claim 6, wherein the dye resublimation barrier sheet according to claim 6 is made of a polyolefin resin made of polyethylene or polypropylene, a release paper, or a Teflon sheet.