JPH0298490A - Transfer recording medium - Google Patents

Abstract

PURPOSE:To enable formation of a three-color image constituted of red, blue and black colors, with high sensitivity, little fogging, favorable wavelength selectivity and low possibility of void formation in image area or the like by making appropriate the combination of the photosensitive wavelength regions of elements and the hues of pigments. CONSTITUTION:An element A comprises a photopolymerization initiator having an absorption maximum in the wavelength range of 300-360nm and a red pigment. An element B comprises a photopolymerization initiator having a absorption maximum in the wavelength range of 360-430nm and a blue pigment. The blue pigment has a low transmittance for light of a wavelength of 300-360nm and a high transmittance for light of a wavelength of 360-430nm. Therefore, the blue pigment reduces greatly the sensitivity to fluorescent lamp light with a peak wavelength of 335nm, but reduces only slightly the sensitivity to fluorescent lamp light with a peak wavelength of 390nm. Thus, the element B with the photosensitivity peak wavelength in the range of 300-360nm is enhanced in wavelength selectivity. Similarly, the addition of the red pigment to the element A with the photosensitivity peak wavelength in the range of 300-360nm enhances the wavelength selectivity of the element A, because the red pigment has a high transmittance for light of a wavelength of 300-400nm and a low transmittance for light of a wavelength of 400nm or above.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a transfer recording medium used in printers, copying machines, facsimiles, etc., and a method for manufacturing the same.

[Conventional technology]

In recent years, with the rapid development of the information industry, various information processing systems have been developed, and recording methods and devices suitable for each information processing system have also been developed and adopted. One such recording method is the thermal transfer recording method, which uses a lightweight, compact, and noiseless device.
It has excellent operability and maintainability, and has been widely used recently.

This thermal transfer recording method generally uses a thermal transfer medium formed by coating a sheet-like support with a thermal transfer ink made of a heat-melting binder and a colorant dispersed therein. The thermal transferable ink layer is superimposed on the transfer medium so as to be in contact with the transfer medium, and heat is supplied from the support side of the thermal transfer medium by a thermal head to transfer the melted ink layer to the transfer medium. A transfer ink image is formed on a medium according to the shape of heat supply. According to this method, plain paper can be used as the transfer medium.

[Problems to be Solved by the Invention] However, the conventional thermal transfer recording method is not without drawbacks, because in the conventional thermal transfer recording method, the transfer recording performance, that is, the print quality, is greatly affected by the surface smoothness. Although good printing is performed on a transfer medium with high smoothness, the print quality is significantly degraded on a transfer medium with low smoothness. However, even when using paper, which is the most typical transfer medium, highly smooth paper is rather special, and ordinary paper has various irregularities due to entangled fibers. Therefore, in the case of paper with large surface irregularities, the hot melted ink during printing cannot penetrate into the paper fibers and adheres to the concavities on the surface or the vicinity thereof, resulting in sharp edges of the printed image. The image may be missing, or part of the image may be missing, resulting in a decrease in print quality.

In addition, with conventional thermal transfer recording methods, only one color image can be obtained with one transfer, so to obtain a multicolor image, it is necessary to repeat the transfer multiple times to overlap the colors. there were. However, it is very difficult to accurately superimpose images of different colors, and it is difficult to obtain images without color shift. In particular, when focusing on a single pixel, colors are rarely superimposed in a single pixel, and in the end, in conventional thermal transfer recording methods, multicolor images are created by aggregation of pixels with shifted colors. was forming. For this reason, clear multicolor images cannot be obtained using conventional thermal transfer recording methods.

In addition, when trying to obtain multicolor images using conventional thermal transfer recording methods, it is necessary to install multiple thermal heads or to make complicated movements such as reverse feeding and stopping of the transfer medium, which requires the entire device. This method has drawbacks such as large and complicated data and a decrease in recording speed.

The applicant uses a photothermal sensitive material, and when light energy and thermal energy are applied in accordance with an image signal, the reaction of the material rapidly progresses, the transfer characteristics change irreversibly, and the image is He has invented and already filed an application for an image forming method and transfer recording medium for forming an image based on the difference in characteristics according to a signal and transferring it to a recording medium (Japanese Patent Application No. 60-15
0597).

The transfer recording medium of the application can eliminate and improve the problems and drawbacks of the conventional thermal recording method as described above, and the present invention is a further improvement of the transfer recording medium, and has high quality and The main object of the present invention is to provide a transfer recording medium capable of forming a three-color image with high sensitivity and less fogging and white spots.

[Means for Solving the Problems] The present invention provides two types of elements (A) in which the recording layer on a support changes transfer characteristics by applying heat and light energy;
(B), the element body contains at least a compound having an ethylenically unsaturated double bond, a pigment, and a photopolymerization initiator, and the photopolymerization initiator in the element body (A) contains a pigment whose maximum absorption wavelength is in the wavelength range of 300 to 360 nm and exhibits a red hue, and the maximum absorption wavelength of the photopolymerization initiator in the element fBl is in the wavelength range of 360 to 430 nm. It is composed of a blue color and a blue hue.

In the recording medium according to the present invention, it is desirable that the wavelength range of light to which the photopolymerization initiator used is sensitized is divided into approximately 300 to 430 nm.

Many photoinitiators contain an aromatic ring in their molecules, and the absorption band based on the π-π1 transition of the aromatic ring exists at 300 nm or less, so they are all sensitive to light with a wavelength of 300 nm or less. This makes it difficult to separate the sensitive wavelength ranges. Furthermore, photopolymerization initiators that react to light of 430 nm or more generally exhibit a yellow color, which deteriorates the color tone of images. Further, by adding a magenta pigment to the element body and combining it with the yellow of the photopolymerization initiator, a red color can be achieved, but problems arise in the storage stability of recorded images such as weather resistance.

The recording medium of the present invention is intended for three-color recording, and has a
By dividing the wavelength range of 430 nm into at least two wavelength ranges, and supporting elements (A) and (B) having photosensitive characteristics in two types of photosensitive wavelength ranges and exhibiting respective hues on a support. The three types of hues in the present invention are blue, red, and black realized by a mixture of both colors.

In the present invention, blue is defined as, for example, cyan color produced by a phthalocyanine pigment. The two photosensitive peak wavelength ranges are 300 to 360 nm and 360 to 430 nm.

The present invention provides a recording medium with high sensitivity and no fogging or white spots by limiting pigments exhibiting two types of hues for two types of sensitive wavelength ranges.

It is generally known that when a colorant such as a dye is mixed into a photosensitive composition, the sensitivity of the photosensitive composition is extremely reduced due to light absorption by the colorant. Pigments are mainly used as coloring materials in ultraviolet curing materials such as UV inks, but even when pigments are used, the sensitivity decreases significantly, and the recording medium according to the present invention cannot achieve an image density within a practical range. In addition, in order to perform high-speed recording, it is necessary to optimize the combination of pigment hue and photopolymerization initiator.

In order to explain the principle by which high sensitivity and fog reduction are achieved by the present invention, FIG. 1 shows the relationship between wavelength and transmittance of blue and red pigments.

Regarding blue, the transmittance of light with a wavelength of 360 to 430 nm is high, but the transmittance of light with a wavelength of 350 to 360 nm or less is low, resulting in an extremely low sensitivity. Also, regarding the red color for boat fishing,
Most of the light with a wavelength of 580 nm or less is absorbed and the transmittance is poor, but as shown in Figure 1, the pigment with a strong magenta color, which is called vermillion for boat fishing, has a relatively high transmittance for light with a wavelength of 300 to 380 nm. , an element containing a photopolymerization initiator with an absorption peak wavelength of 300 to 360 nm and a red pigment that does not cause a significant decrease in sensitivity, and a red pigment with an absorption peak wavelength of 36 nm.
By combining an element containing a photopolymerization initiator with a wavelength of 0 to 430 nm and a blue pigment, a recording medium with high sensitivity and little fogging can be obtained.

In order to explain the principle of increasing the wavelength selectivity of the elements (A) and (B) according to the present invention, Fig. 2 shows a peak wavelength of 335 nm.
Fluorescent lamp (manufactured by Toshiba: FL10A70ε35/33T)
5) and a fluorescent lamp with a peak wavelength of 390 nm (manufactured by Toshiba: F
The relationship between the fluorescence spectrum generated by LIOA70E39/33T15), the wavelength of red and blue pigments, and the transmittance is shown.

Blue pigment has low transmittance between 300 and 360 nm;
Because it has high transmittance for light at ~430 nm, it significantly reduces sensitivity to fluorescent light with a peak wavelength of 335 nm.
It only slightly reduces the sensitivity to light from fluorescent lamps with a peak wavelength of 390 nm, so the peak wavelength of light sensitivity is 360-430 nm.
The wavelength selectivity of the nm element becomes high.

Similarly, if a red pigment is added to an element with a photosensitive peak wavelength of 300 to 360 nm, the red pigment has high transmittance for light in the 300 to 400 nm range and low transmittance for light above 400 nm.
The wavelength selectivity of the element increases.

According to the above principle, according to the present invention, the wavelength selectivity of the element body is increased, and a good image can be formed with less occurrence of white spots and the like.

The photopolymerization initiator used in the present invention has an absorption maximum of 300 to 360 nm, and is benzyl.

Diketone compounds such as 4.4'-dimethoxybenzyl, 4.4'-dimethylbenzyl, 4,4'-dihydroxybe:nozyl, and those with an absorption maximum of 360 to 430 nm, such as thioxanthone, 2-chlorothioxanthone, isopropylthioxanthone, 2 Thioxanthone derivatives such as .4-diethylthioxanthone and 2.4-diisobylthioxanthone can be used, but the present invention is not limited to the above initiators.

The red pigment used in the present invention may be any red pigment used for boat fishing, but in order to achieve high sensitivity, it must be one that has weak absorption of light in the wavelength range of λ=300 to 400 nm, i.e. - It is more preferable to use something called vermilion for boat fishing, specific examples being C and I.

Pigment No Red 242. Red
22. Red 48:1. Red53:1 etc. show good characteristics.

In addition, as a blue pigment, C, 1, Pigment No.
Blue-60, Blue-15-6, Blue-15
,Blue-15-2゜81ue-15-3,Blue
Phthalocyanine pigments such as -15-4 can be used.

The compound having an ethylenically unsaturated double bond in the gold-fertilizing substances (A) and (B) is a compound having at least one ethylenically unsaturated double bond in its chemical structure, It has a chemical form of , polymer. Examples include monomers such as methyl acrylate, methyl methacrylate, acrylonitrile, and acrylamide; unsaturated carboxylic acids such as acrylic acid, methacrylic acid, itaconic acid, crotonic acid, isocrotonic acid, and maleic acid; and ethylene glycol and triethylene glycol. , esters with aliphatic polyhydric polyol compounds such as tetraethylene glycol, trimethylolpropane, 1,3-butanediol, pentaerythritol, dipentaerythritol, and further polyisocyanates (reacted with polyols as necessary) urethane acrylates synthesized by polyaddition reaction of alcohols and amines containing ethylenically unsaturated double bonds;
Examples include urethane methacrylates, epoxy acrylates synthesized by an addition reaction between an epoxy resin and acrylic acid or methacrylic acid, polyester acrylates, and spin acrylates.

In addition, polymers have a backbone of polyalkyl, polyether, polyester, polyurethane, etc. in the main chain and acrylic, methacrylic, cinnamoyl, cinnamylideneacetyl, furyl acryloyl groups, etc. in the side chain. The present invention is not limited to these examples, but the present invention is not limited thereto.

In addition, the above-mentioned elements (A) and (B) containing a photopolymerization initiator and a polymerizable compound having an unsaturated double bond further include known binders, UV absorbers, plasticizers, thermal polymerization inhibitors, etc. Additives may be included as necessary.

As a binder, any organic polymer having unsaturated double bonds or an oligomer or an organic polymer that is compatible with the polymer may be used. As polyacrylic acid alkyl esters such as polymethyl acrylate and polyethyl acrylate, polymethacrylic acid alkyl esters such as polymethyl methacrylate and polyethyl methacrylate, or methacrylic acid copolymers, acrylic acid copolymers, and maleic acid copolymers. Polymers, chlorinated polyolefins such as chlorinated polyethylene and chlorinated polypropylene, polyvinyl chloride, polyvinylidene chloride, polyacrylonitrile, or copolymers thereof, as well as polyvinyl alkyl ether, polyethylene, polypropylene, polystyrene polyamide, polyurethane, and chlorinated Examples include rubber, cellulose derivatives, polyvinyl alcohol, polyvinylpyrrolidone, etc., but the present invention is not limited thereto.

Even if these polymers are used alone, they can be used in an appropriate ratio of 2+! 1
The above may be used in combination. Further, as a binder, waxes may be used regardless of whether they are compatible or incompatible, and any amount of these polymers can be mixed into the entire composition.

Next, the elementary bodies (A) and (B) consisting of the above-mentioned components have a particle size of about 3 to about 50 μm, preferably 7 to 15 μm when solid.
Even if the elements (A) and (B) are liquid or solid, they can be physically and chemically deposited on a support as microcapsules with a particle size of about 3 to about 50 μm, preferably 7 to 15 μm. to form a recording medium. Elementary body (A
) The average particle diameter of IB) is preferably about 10 μm. When binding microcapsules onto a support using an adhesive,
As the binder, epoxy adhesive, polyvinyl alcohol, polyvinylpyrrolidone, polyacrylamide, polyester, urethane, acrylic, urethane-acrylic, ethylene/vinyl acetate copolymer adhesive, etc. are preferably used. When the element bodies fA) and (B) are made into particles and supported on a support, it is desirable to further provide an oxygen-preventing layer such as a transparent support in order to prevent inhibition of photopolymerization by oxygen.

Next, a specific example of the image forming method using the recording medium of the present invention will be shown based on FIG. Irradiate light to cover the area. The irradiation light has a wavelength that reacts with the image forming elements (^) and (B) in sequence.

For example, when the image forming elements (A) and (B) are colored either red or blue, the wavelengths λ(R), λ(B)
irradiate the light sequentially.

That is, first, light of wavelength λ(R) is irradiated from the side of the transfer recording layer Ia of the transfer recording medium 1, and the heating resistors 20a, 20b, 20c' of the thermal head are made to generate heat, and then the red coloring material is irradiated. The image forming element to which both heat and light of wavelength λ(R) are applied (hatched area in Fig. 3a). Hereinafter, the cured image forming element is indicated by hatching. ,) hardens.

Next, as shown in FIG. 3b, the transfer recording layer 1a is coated with a wavelength λ(
While irradiating the Bl light, the heating resistors 20b and 20
When c is generated, the image forming element containing the blue coloring material, to which the heat and the light of wavelength λ(B) have been applied, is cured. This transferred image is transferred to the transfer medium 21 in the next transfer step as shown in FIG. 3c. At this time f
The areas where the pixel bodies in A) and (8) are transferred appear black due to color mixture.

In the transfer process, the transfer recording medium on which the transferred image has been formed is brought into contact with the transfer medium, and heat is applied from the transfer recording medium or the transfer medium side to selectively transfer the transfer image to the transfer medium to form an image. . Therefore, the heating temperature at this time is determined so that only the transferred image is selectively transferred in the transfer process. Further, in order to perform the transfer efficiently, it is also effective to apply pressure at the same time. Pressure is particularly effective when using a transfer medium with low surface smoothness. Furthermore, if the physical property that governs the transfer characteristics is the viscosity at room temperature, transfer is possible only by applying pressure.

Furthermore, heating during the transfer process is suitable for obtaining stable, durable, and durable multicolor images.

In the embodiment described above with reference to FIGS. 3a to 3c, a method of forming an image by irradiating light over the entire area of the heating resistor array 20 of the thermal head and selectively causing the heating resistors of the thermal head to generate heat is described. However, it is also possible to uniformly heat a certain part of the transfer recording medium (in the case of the thermal head shown in Fig. 3a, when all heating resistors are made to generate heat) and selectively irradiate the recording medium with light. Similarly, multicolor images can be formed. That is, light energy of a wavelength that is modulated according to the recording signal and that is selected depending on the color tone of the image forming element whose physical properties governing the transfer characteristics are desired to be changed is applied together with thermal energy.

A preferred embodiment of a recording apparatus using the recording medium of the present invention will be described with reference to FIG.

In the figure, reference numeral 1 denotes a transfer recording medium of the present invention in the form of a long sheet, which is wound into a roll and is removably incorporated into an apparatus main body M as a supply roll 2. That is, this supply roll 2 is removably loaded onto a rotatable shaft 2a provided in the main body M of the apparatus.

First, the leading edge of the transfer recording medium 1 is placed on the supply roll 2.
Transfer roller 4a and pressure roller 4 via guide roller 12a, thermal head 3a and guide roller +2b.
Peeling roller 5 from between b. Guide rollers 12c and 12
d to reach the take-up roll 6, and its tip is locked to the take-up roll 6 by a means such as a gripper (not shown).

Thereafter, by rotating the transfer roller 4a while applying torque to the take-up roll 6 in the direction of the arrow C using a known drive means, the transfer recording medium 1 is fed out in the direction of the arrow a, and is attached to the circumferential surface of the take-up roll 6. It is wound up one after another.

Incidentally, during the winding, a constant pack tension is applied to the supply roll 2 by, for example, a hysteresis brake (not shown), and this tension and the guide rollers 12a, 12b cause the transfer recording medium 1 to move toward the thermal head 3a. It is configured to be conveyed while being pressed against the object at a certain pressure and at a certain angle.

The recording section is composed of a heating means for applying thermal energy to the recording medium 1 and a light irradiation means for applying light energy to the transfer recording medium 1 as well.

The heating means generates heat on the surface of the thermal head 3a according to the image signal, for example, with a width of 0.2 mm and a dot of 8 dots/mm.
A-4 size, line type heating resistor rows 20 are arranged, and as described above, the support lb side of the transfer recording medium 1 is applied with a predetermined pressure to the heating resistor row 20 by back tension during conveyance. It is configured to be pressed into contact. The image signal is generated from a control unit of a facsimile, an image scanner, an electronic blackboard, etc., depending on the purpose.

On the other hand, a light irradiation means is provided on the transfer recording layer la side facing the recording head 3a. As the light irradiation means, two types of fluorescent lamps 3C are provided which have different emission wavelength ranges and can cause the elements (A) and (B) to react individually. Two types of fluorescent lamps include, for example, the element body (A
FL10A70E31/33T15 (λp = 3
13nm: Toshiba), FL10A70E35/33T
15 (λp = 335 nm: Toshiba), FL10A7
0BL/33T15 (λp = 352nm: Toshiba) and the peak wavelength 360 to 430 that causes the element body fB) to react
FLR16R70-BA-37/3 as nm fluorescent lamp
3T16 (λp = 370nm: Matsushita), FL10
A70E39/33T15 (λp = 390nm:
Toshiba), etc., one type of fluorescent lamp may be selected in accordance with the absorption wavelength range of the photopolymerization initiator.

The present invention will be explained in more detail with reference to Examples below.

Example 1 20 g of each of the components shown in Table 1.2 were microencapsulated by the method shown below.

Method for manufacturing microcapsules Mix 100 g of water and 26 g of isobutylene-anofomaleic acid copolymer (20.6%) (manufactured by Kureha Chemical Co., Ltd.),
3.1g of pectin was added to this and stirred for 20 minutes9.
The pH was then adjusted to 4.0 with a 20% sulfuric acid solution to 0.
2 g of Quadrol (BASF) was added. While stirring this at 3000 rpm with a homomixer, a solution prepared by dissolving 20 g of the ingredients shown in Table 1 in 30 g of chloroform was added over 10 to 15 seconds, and emulsification was continued for 10 minutes.

The emulsion was transferred to one side of a 500 mI2 tube and stirred with a stirring blade for 1 to 2 hours, and then the solvent was distilled off.

Next, 8.3 g of urea solution (50 wt%), 0.4 g of resorcinol dissolved in 5 g of water, IO, 7 g of formalin (37%) and 0.6 g of ammonium sulfate dissolved in 10 mI2 of water were added at 2 min intervals. I added it.

Table 1 Table 2 After raising the temperature to 60° C. and continuing stirring for 3 hours, the temperature was lowered and the pH was adjusted to 2.0 with a 20% caustic soda solution. The capsule liquid was filtered, washed twice with 1000 mI2 water, and dried.

Microcapsules and binary bodies (A) and (B) were prepared using the components shown in Table 2 in the same manner.

PET (polyethylene terephthalate) film (
6 μm thick) thermoplastic polyester (Nippon Gosei Kagaku Kogyo Polyester-011) diluted with toluene and applied to a thickness of 05 μm using an applicator (A)
was sprinkled onto the film, spread, and unbound particles were shaken off. The thickness of the film is 100 μm and 50 μm.
Sandwiched between PET films, temperature 110℃, pressure 2-3
kg/cm'' heat roller, the PET film was peeled off, and the element body (^) was firmly adhered to the PET film to produce a transfer recording medium. In the same manner, the element body (^) was
A transfer recording medium was prepared by mixing equal amounts of B), element body (^), and (B).

The transfer recording medium consisting of the element (A) was wound into a roll and incorporated into the apparatus shown in Fig. 4, and the thermal head was a ^-4 size line type with a width of 2 mm and 8 dots/mm. The heat generating element rows were arranged at the edge portions. In addition, as a fluorescent lamp, FLIOA70E35
/33TI5 (λp =335r+m) and FL10
A70E39/33T15 (λp = 390nm)
It was used.

Next, as shown in the timing chart of FIG. 5, the hood and thermal head were energized.

Note that the voltage and drive signal for energizing the thermal head were controlled so that the temperature of the element body (A) was approximately 100°C. By varying the energization time and determining the time at which the element (A) at the point where the signal was applied was no longer transferred, the pulse width (defined as sensitivity) was 25 ma for light of λp = 335 nm. , +30 for λp = 390 nm light
It was m5. Similarly, when the sensitivity of the recording medium made of the element (B) was determined, it was found that 20
m5. It was 70 m5 for λp = 335 nm light.

Next, for the recording medium consisting of the elements (A) and (B),
When electricity was applied at the timing shown in FIG. 6, a good three-color image consisting of red, blue, and black could be formed without fogging or white spots.

Example 2 The components shown in Table 3.4 were microencapsulated in the same manner as in Example 1, and the sensitivity was determined as a recording medium in the same manner as in Example 1. In addition, as a fluorescent lamp, FLlO^70E31/3
3T15 (λp = 313 nm) and FLR16R7
0-BA-37/33T+6 (λp = 370nm
)It was used.

The element body (A) consisting of the components in Table 3 has a sensitivity of 40m5. The sensitivity for λp = 370 nm is 140 nm, and the element body (B
) has a sensitivity of 35m5 for λp = 370nm, λ
The sensitivity for p = 313 nm was 80 m5.

Next, when the recording medium consisting of the elements (A) and (B) was energized at the timing shown in FIG. 7, a good three-color image consisting of red, blue, and black could be formed.

Table 3 Table 4 Example 3 The components shown in Table 1.2 with different amounts of pigment added were microencapsulated in the same manner as in Example 1, and then recording media were produced. The red capsule is FLIOA70ε35/33T
15 (λp = 335nm: Toshiba), the blue capsule is FLIOA70E39/33T15 (λp = 39
Using a fluorescent lamp (0 nm + Matsushita), the respective sensitivities were determined and summarized in Table 5. When the amount of pigment added is less than 5%, sensitivity is good, but wavelength selectivity due to crosstalk is poor.

On the other hand, when it exceeded 50vt%, the sensitivity decreased significantly.

Comparative Example 1 The components shown in Table 6.7 were encapsulated in the same manner as in Example 1, and the sensitivity was determined. This is because the usage of pigment is opposite to that in Example 1, that is, the absorption maximum is 300 to 360.
360 nm photopolymerization initiator and blue pigment together.
~430 nm photoinitiator and red pigment are used together. As a result, λp of the components in Table 6 = 335n
Sensitivity to m fluorescent lamp is 5゜ms, λp = 390nm
100 m5 for the light of , and λp= of Table 7 components
Sensitivity to 390nm is 50m5, λp = 335n
It was 60 m5 for light of m, which resulted in poor sensitivity and wavelength selectivity.

[Effects of the Invention] As explained above, according to the present invention, by optimizing the combination of the photosensitive wavelength range of the element and the hue of the pigment, high sensitivity and less fogging are achieved, as well as good wavelength selectivity. It is possible to provide a color transfer recording medium that can form a three-color image consisting of red, blue, and black in which white spots and the like are difficult to occur.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the relationship between wavelength and transmittance of pigments used for red and blue pigments that can be used in the present invention, and Figure 2 is a diagram showing the relationship between wavelength and transmittance of red and blue pigments that can be used in the present invention. FIG. 3 is a diagram showing the principle by which three-color images can be created by the present invention, and FIG. 4 is a diagram showing the emission spectrum of a fluorescent lamp with emission peak wavelengths of 335 nm and 390 nm. FIG. FIG. 5 shows an example of a recording device.
．． Figure 6.7 is a diagram showing the timing of signals applied to the fluorescent lamp and the thermal head. 1: Transfer recording medium la: Transfer recording calendar: Support: Supply roll: Shaft: Thermal head: Fluorescent lamp: Transfer roller: Pressure roller: Peeling roller: Winding roll Guide roller: Heating resistor row 2 Heating resistor: Transferred medium: Main body

Claims (3)

[Claims] (1) At least two types of elements (A) in which the recording layer on the support changes transfer characteristics upon application of heat and light energy;
(B), the element body contains at least a compound having an ethylenically unsaturated double bond, a photopolymerization initiator, and a pigment, and the element body (A) absorbs the photopolymerization initiator. The wavelength maximum is 300 to 360 nm, the hue of the pigment is red, and in the element (B), the maximum absorption wavelength of the photopolymerization initiator is 360 to 430 nm.
1. A transfer recording medium characterized in that the pigment is blue in color and the hue of the pigment is blue. (2) The transfer recording medium according to claim 1, containing 5 to 50% by weight of pigment. (3) The transfer recording medium according to claim 1 or 2, wherein the elements (A) and (B) are composed of microcapsules.