JPH01215588A - Information recording medium and information recording method using said medium - Google Patents

Abstract

PURPOSE:To enable visible color information to be recorded on a substrate, e.g. cards, by using a heating member such as a thermal head, by forming a thermal transfer accepting layer mainly composed of a specific thermoplastic resin on the surface of the substrate. CONSTITUTION:In an information recording medium 1, on the surface of a substrate 2, a thermal transfer accepting layer 3 mainly composed of a lubricant and a thermoplastic resin made of a linear saturated polyester resin, which is formed by the condensation polymerization of a dicarboxylic acid having a glass transition point of 50-110 deg.C and a diol component, or an acrylic resin or the mixture of these resins. A hot-melt adherent recording layer 7 of a thermal transfer recording medium 6 provided with the hot-melt adherent recording layer 7 on one surface of a substrate 8 is overlapped on the surface of the thermal transfer accepting layer 3. Thereafter, from the side of the substrate 8 of the thermal transfer recording medium 6 a thermal recording is conducted by a heating recording member 10, whereby the hot-melt adherent recording layer 7 is transferred and bonded on the side of the thermal transfer accepting layer 3 to form a recording image 9.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention uses a thermal transfer recording medium such as a transfer ribbon or a thermal transfer sheet having a heat-melting adhesive recording layer, and a heat-generating recording member such as a thermal head or a heat printing plate. The present invention relates to an information recording medium on which a durable permanent image can be formed by simply transferring a hot-melt adhesive recording layer without requiring any special fixing means, and an information recording method using the same.

<Prior art and problems to be solved by the invention> In recent years, the use of recording visible information on information recording cards has become widespread. Examples include displaying the balance of a prepaid card, and recording variable information such as sticker-less commuter passes and coupon tickets. Various printing methods are being considered, but due to the nature of the intended use, the recorded image may be abrasion resistant, weather resistant, water resistant,
While it is required to have excellent chemical resistance and tamper resistance, the system also needs to be able to easily output information recorded on a computer, etc. and to record using a simple recording method. desired.

In response to such demands, direct thermal recording methods and thermal transfer recording methods have been proposed as recording methods, and some of them have been put into practical use. However, since direct thermal recording uses leuco dye, there are disadvantages such as the reliability of the image after recording, such as recoloring due to heating, discoloration and fading due to light, and lack of long-term storage stability, which limits its use and recording Another disadvantage of this method is that it can only obtain monochrome visible information.

On the other hand, thermal transfer recording is a method of transfer printing in which a thermal transfer material consisting of a layer of heat-melting ink such as wax is overlaid on paper or a plastic substrate provided with a porous ink absorption layer, and the ink layer of the thermal transfer material By applying different colorants, full-color visible information can be printed.

However, if the image area is rubbed by hand, it may leave stains and reduce visibility, resulting in a lack of reliability of the recorded image.

<Means for Solving the Problems> The present invention was made in view of the drawbacks of the prior art described above, and its purpose is to record visible color information on a substrate such as a card using a heat-generating recording member such as a thermal head. An object of the present invention is to provide an information recording medium on which images can be recorded with excellent stability without using special fixing means, and an information recording method using the same.

In order to achieve the above object, in the present invention, the thermal transfer receiving layer provided on the surface of the substrate is coated with a lubricant and a glass transition point of 50.
The thermoplastic resin is mainly composed of a linear saturated polyester resin or acrylic resin formed by postpolymerization of a dicarboxylic acid component and a diol component at a temperature ranging from 'C to 110°C, or a mixture of the saturated polyester resin and acrylic resin. When forming a transfer image on an information recording medium using a heat-melting thermal transfer recording medium, the surface of the substrate is coated with a lubricant and a glass transition temperature of 50°C to 50°C.
A thermal transfer receiving layer mainly composed of a thermoplastic resin consisting of a linear saturated polyester resin or acrylic resin or a mixture of the saturated polyester resin and acrylic resin formed by post-polymerization of a dicarboxylic acid and a diol component in the range of 110°C. The heat-melt adhesive recording layer of a heat-melt adhesive recording medium having a heat-melt adhesive recording layer provided on one surface of a substrate is superimposed on the heat-melt adhesive recording layer of the information recording medium provided, and then the heat-melt adhesive recording layer is Heat recording was performed using a heat-generating recording member from the substrate side of the medium to transfer and adhere the heat-melting adhesive recording layer to the heat transfer receiving layer side, thereby forming a good recorded image.

The present invention will be specifically described below with reference to the drawings. The information recording medium according to the present invention has a structure in which a thermal transfer receptive layer is provided on the surface of a base material such as paper or plastic, and specifically, as shown in FIG. It consists of a thermal transfer receiving layer (3). Further, when a base body provided with a magnetic recording layer is used, the configurations shown in FIGS. 2 to 4 are adopted. The information recording medium (1) shown in FIG. ) is provided. The information recording medium (1) shown in FIG. 3 has a magnetic recording layer (4) provided on a base (2), and a thermal transfer receiving layer (3) provided on the magnetic recording layer (4). Figure 4 shows the base (2
), a magnetic recording layer (4), a colored layer (5) and a thermal transfer receiving layer (3) are laminated in this order. Here, the colored layer (
5) needs to be a colored layer having a hue different from the hue of the image thermally transferred and recorded on the thermal transfer receiving layer (3). The method of recording visible information on the information recording medium (1) according to the present invention is as shown in FIG. ) and a transfer ribbon (6) having a heat-melt adhesive recording layer (8) on a heat-resistant film (7).
) sides are placed in contact with the card-shaped information recording medium (1) and when weld them under heat and pressure, a part of the heated recording layer (7) is transferred and adhered to the thermal transfer receiving layer (3), forming a recorded image (9).
) is formed.

In forming the image, first, the negative part of the heat-melting adhesive recording layer (7) is melted by a heat-generating recording member such as a thermal head, and at the same time, thermal energy is applied to the information recording medium via the transfer ribbon (6). (1) Thermal transfer receiving layer (3)
The thermoplastic resin in the receptive layer is heated to a temperature higher than the glass transition temperature.The zero-order thermally melted recording layer is thermally adhered to the receptive layer, and transfer recording is performed. Transfer recording is performed by using the above recording method. By employing the above recording method, a permanent image with excellent mechanical strength can be obtained from the transferred and recorded image without performing fixing after the transfer and recording.

The information recording medium of the present invention for achieving the above-mentioned recording is basically made of paper, synthetic paper, or polyester, polyvinyl chloride, polycarbonate, polymethyl methacrylate, etc., and is coated with a lubricant and a glass transition point. from 50℃ to 1
A composition mainly consisting of a linear saturated polyester resin or acrylic resin formed by condensation polymerization of a dicarboxylic acid component in the 10'C range and a diol component, or a thermoplastic resin consisting of a mixture of the saturated polyester resin and acrylic resin. A thermal transfer receiving layer is formed depending on the material.

This thermal transfer receiving layer may be obtained by uniformly dispersing the above-mentioned thermoplastic resin in a desired solvent by a wet dispersion method, applying a coating liquid onto the above-mentioned substrate using a conventional coating method, and drying the coating liquid. As described above, the specific layer structure thereof is as shown in FIGS. 1 to 4. The reason why the glass transition point of the thermoplastic resin that is the composition of the thermal transfer receiving layer (3) was specified here is as follows.

That is, as described above, the heat-melting adhesive recording layer is melted by a heat-generating recording member such as a thermal head, and at the same time, thermal energy is transmitted to the receiving layer of the information recording medium via the thermal transfer recording medium (thermal transfer ribbon). The thermoplastic Q[D in the receiving layer is heated to a temperature above the glass transition point. At this time, the heat-melted adhesive recording layer is thermally adhered to the receiving layer and transfer recording is performed. The upper limit glass transition temperature of the thermoplastic resin in the receptor layer for transfer recording is 110°C. If a thermoplastic resin with a glass transition temperature higher than that is used for the receptor layer, it will be transferred and recorded, but since it is not thermally bonded, the mechanical strength of the transferred image is weak, and if rubbed with a plastink eraser. It fell off right away. Furthermore, the reason why the glass transition point was set at 50° C. or higher was that emphasis was placed on the durability of the image-receiving layer. If the glass transition temperature is 50° C. or lower, durability will be lacking in terms of abrasion resistance, plasticity resistance, and chemical resistance. Specific examples of plastic resins with glass transition points of 50°C to 110°C used in the present invention include linear saturated polyesters formed by condensation polymerization of dicarboxylic acid components and diol components, acrylic resins, and polyacrylic resins. San (Tg: 72°C), polyacrylic J-2-methoxyethyl oxide (Tg: 85°C)
), polymethyl acrylate CTg: 100'C),
2-naphthyl polyacrylate (Tg near 2°C), inbornyl polyacrylate (Tg: 94°C), methyl polyacrylate (Tg: 103°C), ethyl polyacrylate (Tg: 65°C), polyacrylate -butyl (Tg: 107°C), isobutyl polyacrylate (Tg': 53°C), polyacrylic acid (Tg: 110°C), copolymer of methyl methacrylate and alkyl methacrylate (however, the alkyl group has 2 to 6 carbon atoms), polymethylchloroacrylate ((T
(Tg: 83°C), polyisopropyl-α-chloroacryle) (Tg: 71'C), and these may be used alone or in a mixed system.

The lubricant that is a component of the thermal transfer receptive layer of the information recording medium of the present invention and can be applied to the heat-melt adhesive recording layer of the thermal transfer recording medium used for recording an image on the information recording medium is the receptive layer. Examples of additives include Teflon powder, polyethylene powder, animal-based, vegetable-based, mineral-based, and petroleum-based natural waxes, synthetic hydrocarbon-based modified waxes, Fatty alcohols and oxygen, fatty acid esters and glycerides,
Examples include synthetic waxes such as hydrogenated waxes, synthetic ketones, chlorinated hydrocarbons based on amines and amides, synthetic animal waxes, and alpha-olefin waxes, and metal salts of higher fatty acids such as zinc stearate.

The composition ratio of the thermal transfer receiving layer is 70 to 95 parts by weight of thermoplastic resin and 5 parts by weight of lubricant to 1100 parts by weight of the solid content of the receiving layer.
~20 parts by weight. Addition of colorants or inorganic or organic fillers as other additives does not impair the characteristics of the present invention. The preferred amount added is 10 parts by weight or less.

Thermal transfer recording medium (6) comprising a heat-melting adhesive recording layer (8) for thermal transfer recording on the receptor layer (3) of the information recording medium (1) of the present invention is a thermal transfer recording medium (6) that is heated by a thermal helad or the like. Any thermal transfer recording medium can be used as long as it is thermally adhered to the receiving layer by a recording member and transfer-recorded. It is preferable to use the resin-type transfer ribbon disclosed in Japanese Patent Application No. 62-63529. This resin-type transfer ribbon is coated with a colorant and a glass transition point of 50 to 110' on a heat-resistant plastic film. A transfer recording layer mainly composed of a thermoplastic resin and a lubricant in the range of C is provided, and the image transferred and recorded on the information recording medium (9
) has a material composition that provides excellent plasticizer resistance, chemical resistance, and mechanical strength.

On the other hand, magnetic recording N(4) of the information recording medium (1) described above
is magnetic powder, e.g. 7-Fe2(h, Co coated 7-Fe,
O3, Fe, O,, Cr01. , Fe% Fe-Cr
, Fe-Co, Go-Cr SC
.

-Ni, MnA1. A coating liquid in which conventionally known magnetic fine particles such as Ba ferrite and Sr ferrite are dispersed in a suitable resin is coated and dried on the substrate (2), and a pre-manufactured magnetic tape is coated with an adhesive. It may be obtained by laminating it on the substrate (2).

The colorant layer (5) is made of a general-purpose thermoplastic resin, such as polyvinyl chloride, polystyrene, linear saturated polyester, polymethyl methacrylate, polyethyl methacrylate, etc. alone or a copolymer of methacrylic resin, polyurethane, polyester, etc. A coating liquid consisting of a polymeric binder such as butyral or nitrocellulose and a coloring agent such as a dye or pigment uniformly dispersed by a wet dispersion method using an appropriate solvent is applied onto the magnetic recording layer (4) and dried. It can be formed by Alternatively, a metal such as aluminum or tin may be formed on the magnetic recording layer (4) by sputtering, vacuum evaporation, or plating. However, colored layer (5)
It is necessary that the hue of the image is different from that of the image transferred and recorded on the information recording medium.

<Examples> Examples of the present invention will be shown below, but the present invention is not limited to these examples. In each example, "part J means part by weight.

<Example 1> Composition of thermal transfer receptor coating liquid Toluene/2-butanone 50 parts A coating liquid consisting of the above composition was dispersed in a Hyper for 30 minutes to obtain a receptor layer coating liquid. A ## white polynyster sheet was coated with Royard, dried, and cut into predetermined dimensions to produce a card.

<Example 2> Composition of magnetic recording layer coating liquid 1-Fezo, 1 40 parts Salt-vinyl acetate resin 7 parts Polyurethane elastomer 3 parts (manufactured by Nippon Polyurethane) Toluene/2-butanone (2/1) 100 parts Isocyanate curing Agent (Coronate HL manufactured by Nippon Polyurethane) 1 part Composition of thermal transfer receptor layer coating liquid 1 part Carnauba wax 1 part Acrylic resin (Tg: 105°C) 10 parts [Mitsubishi Rayon BR:
80) Toluene/2-butanone (2/1) so part: An isocyanate curing agent having the above composition is added to a coating liquid obtained by uniformly dispersing the magnetic recording layer coating liquid containing no isocyanate curing agent in a sand mill for 2 hours. The coating solution prepared by adding the above was coated onto a 250μ hard vinyl chloride sheet using a wire bar to a dry film thickness of 15μ.
A magnetic recording layer was provided by coating and drying the magnetic recording layer. Next, on one side of the hard PVC sheet provided with the magnetic recording layer, a thermal transfer receptive layer coating liquid having the above composition was dispersed in a Hyper for 30 minutes to obtain a receptive layer coating liquid, and then applied to a wire bar so that the dry weight was 3 g/I. A card was prepared by coating the film, drying it, and cutting it to a predetermined size.

<Example 3> Composition of thermal transfer receptor layer coating liquid Polyethylene powder 2 parts Saturated polyester (Tg: 65°C) 5 parts (Elycil tlE-3200 manufactured by Unitika) Acrylic resin (T11
00'C) 5 parts (Rohm & House Pararoid ^-11) Toluene/2-butanone (2/1)
50 parts Composition of colorant layer coating solution 220 parts TiO Nitrified cotton lacquer (25% by weight) 24 parts (Cellline FM-200 manufactured by Daicel) Saturated polyester
4 parts (Vylon 1o3 manufactured by Toyobo Co., Ltd.) Toluene/2-butanone 40 parts Isocyanate curing agent 1 part (10% HL manufactured by Nippon Polyurethane Co., Ltd.) 1 part A magnetic recording layer was formed on hard vinyl chloride in the same manner as in Example 2. Thereafter, a colorant layer coating solution having the above composition, which was uniformly dispersed in advance using a sand mill, was applied onto the layer using a wire bar so that the dry weight was 3 g/rrl, and dried to form the colorant layer. was formed. Next, the above-mentioned thermal transfer receptor layer coating liquid, which has been uniformly dispersed in advance using Hyper, is applied onto the colorant layer to a dry weight of 1.5.
It was coated with a wire bar so as to have a ratio of g/nf and dried. Thereafter, it was cut to a predetermined size to produce a card.

<Preparation example 1 of transfer ribbon> Composition of recording layer made of heat-sensitive melt adhesive Carbon rack 2 parts Methacrylic acid ester (BR-64 made by Mitsubishi Rayon) 100 parts Salt and acetic acid vinyl copolymer 3 parts (UCC1il)
VAGH) Teflon powder 1 part 2-butanone 50 parts A coating solution having the above composition was ground and dispersed in a paint conditioner for 30 minutes to obtain a hot-melt adhesive recording layer coating solution with a dry weight of 3 g/n.
A resin-type transfer ribbon was prepared by applying with a wire bar onto a 6 μm polyester film having an anti-sticking layer provided on the back surface so as to have an anti-sticking layer.f and drying.

<Transfer Ribbon Production Example 2> A resin-type transfer ribbon was produced in the same manner as Production Example 1 except that Tiot, the coloring agent of Production Example 2, was added to oil red.

<Example 4> The card-shaped information recording medium manufactured according to Examples 1 to 3 above was subjected to a Toshiba thermal simulator (printing conditions: applied power 0. 4511 /dat, pulse width 2.5m5ON
OCI at 10FF)? When printing patterns such as letters, kanji, and Roman characters were thermally transferred and recorded, clear recorded images could be obtained. Furthermore, when the durability of the image after recording was evaluated, it was possible to obtain a thermal transfer recorded image that was excellent in plasticizer resistance, chemical resistance, abrasion resistance, and scratch resistance.

<Effects of the Invention> According to the present invention, it is possible to form an image record on an information recording medium having a thermal transfer image-receiving layer, which is capable of monochrome display and color display, and has excellent chemical resistance and mechanical strength. I can do it. Therefore, it can be used as an extremely wide-ranging information recording card, such as for recording variable information on cards that need to be prevented from forgery, for stickerless commuter passes, and as a balance display medium for prepaid cards.

[Brief explanation of the drawing]

1 to 4 are cross-sectional explanatory diagrams of an information recording medium according to the present invention, and FIG. 5 is an explanatory diagram schematically showing a method for recording information on an information recording medium according to the present invention. 1. Information recording medium 2. ...Base 3,...
・Relaxed transcription acceptance N 4. ...Magnetic recording layer 5,...
・Colored layer 6. ...Resin type transfer ribbon 7,
. . . Hot-melt adhesive recording layer 8, . . . Heat-resistant film 9, . . . Recorded image 10. ...Thermal Herad 11, ...Press roller patent filed by Toppan Printing Co., Ltd. Representative Kazuo Suzuki Figure 4

Claims (6)

[Claims] (1) A thermal transfer receiving layer is provided on the surface of the substrate, and the thermal transfer receiving layer has a lubricant and a glass transition temperature of 50°C to 110°C.
It is characterized by being mainly composed of a thermoplastic resin consisting of a linear saturated polyester resin or acrylic resin formed by condensation polymerization of a dicarboxylic acid component and a diol component in the range of Information recording medium. (2) The lubricant and glass transition point on the surface of the substrate are 50℃~11
A thermal transfer receiving layer mainly composed of a linear saturated polyester resin or acrylic resin formed by condensation polymerization of a dicarboxylic acid and a diol component in the range of 0°C, or a thermoplastic resin consisting of a mixture of the saturated polyester resin and acrylic resin. The heat-melt adhesive recording layer of a heat-melt adhesive recording medium provided on one surface of a substrate is superimposed on the heat-melt adhesive recording layer of the information recording medium provided, and then the heat-melt adhesive recording layer 1. An information recording method comprising performing heat recording from the base side of a recording medium using a heat-generating recording member to transfer and adhere the heat-melting adhesive recording layer to the heat transfer receiving layer side to form a recorded image. (3) The composition of the thermal transfer receiving layer is 70 to 95 parts by weight of thermoplastic resin and 5 to 2 parts by weight of lubricant based on 100 parts by weight of the total solid content.
The information recording medium according to claim 1 or 2, characterized in that the content is 0 parts by weight. (4) The thermal transfer receiving layer contains at least one lubricant selected from Teflon powder, polyethylene powder, waxes, and metal salts of higher fatty acids. The information recording medium according to any of paragraph 3. (5) The information recording medium according to claim 1 or 2, characterized in that a magnetic recording layer is provided on the back surface of the substrate or between the substrate and the thermal transfer receiving layer. (6) The heat-melt adhesive recording layer has a glass transition point of 5 with the colorant.
3. The information recording method according to claim 2, characterized in that the composition comprises a composition mainly consisting of a thermoplastic resin and a lubricant having a temperature in the range of 0°C to 110°C.