JP2713339B2 - Heat transfer sheet - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat transfer sheet.
More specifically, thermal head or laser
Heat printing according to image information is performed by
Heat transfer sheet used in combination with transfer sheet
You. BACKGROUND OF THE INVENTION Problems to be Solved by the Invention
According to image information with a round head or laser
Conventionally, thermal coloring paper is mainly used to obtain images
Have been. In this thermosensitive coloring paper, it is provided on the base paper.
At room temperature, a colorless or pale leuco dye and a developer are added.
A color image is obtained by contact with heat. Such manifestation
Coloring agents include phenolic compounds and zinc salicylate.
Conductors, rosins and the like are commonly used. However
The thermosensitive coloring paper as described above allows the obtained colored image to be
There is a fatal disadvantage that it loses color when stored, and
Color printing is limited to two colors and has continuous gradation
Color image could not be obtained. On the other hand, heat generated by dispersing a pigment on a base paper
Thermal transfer paper with a fusible wax layer has recently been used.
I did. The heat-sensitive transfer paper and the transfer receiving paper are overlapped,
When printing with heat from the back of the transfer paper,
The transfer layer moves onto the receiving paper to obtain an image. this
According to such a printing method, a durable image can be obtained.
With thermal transfer paper containing three primary color pigments
By printing multiple times, a multicolor image can be obtained.
To obtain a photograph-like image with qualitatively continuous gradation
I can not do such a thing. By the way, in recent years, it has been difficult to directly take pictures from electrical signals.
The demand for obtaining such images has increased, and various attempts have been made.
Have been. One such attempt is to print the image on a CRT.
Is a method of shooting this with a silver halide film,
If the silver halide film is an instant film,
The disadvantage is that the coating cost increases, and
If the film is 35mm film, development
There is a disadvantage that there is no immediacy because it is necessary. Yet another
The impact ribbon method or ink jet method
Jet method has been proposed, but the former is said to have poor image quality.
The latter has the disadvantage of requiring simple image processing.
The disadvantage is that it is difficult to obtain an image like a photo.
You. [0005] In order to eliminate such disadvantages, heating is
Sublimable disperse dye layer having the property of migration
Sublimation using a thermal transfer sheet in combination with a heat transfer sheet
On the transfer sheet while controlling the disperse dye
There is a method to get the image like a photo with gradation by shifting.
Is being planned. According to this method, you can easily
An image with continuous gradation can be obtained by
Because the equipment used in the process is not complicated,
I have. As one of the prior arts close to such a method, a po
Dry transfer printing of polyester fiber is mentioned.
In the transfer printing method, dyes such as sublimable disperse dyes are
Disperse or dissolve in the solution to form a paint, and thin the paint.
Thermal transfer sheet after applying it in a pattern on leaf paper and drying it
This thermal transfer sheet is used as a heat transfer sheet, polyether.
It is superposed on the steal fiber and heated by heating.
In this method, an image is obtained by dyeing a fiber with a disperse dye. However, the heat transfer sheet and the poly
Overlay the heat transfer sheet made of ester fiber, and
High density even when printing with a thermal head.
A color image cannot be obtained. The reason is that
The surface smoothness of polyester fiber cloth is not good
However, it is considered mainly for the following reasons.
You. That is, normal dry transfer printing or wet transfer
In the printing method, sublimation dyes are transferred onto polyester fiber cloth.
The line is performed with sufficient heating time
Heating by thermal head etc. is usually extremely short
The dye does not migrate sufficiently onto the fiber cloth
It is. By the way, in dry transfer printing method, 200 ° C for 1 minute
The dye transfer is achieved by heating for a while.
On the other hand, heating by the thermal head is 400 m
It is short. [0007] Such a problem is solved and a sufficient density is obtained.
In order to obtain an image having
Resins with low lath transition points and high affinity for dyes
Made of polyester resin (Vylon: Toyobo)
Is being considered. In this case, heating the thermal head
Dye easily penetrates into the receiving layer even with energy, high concentration
Image may be obtained. However, in the above case, heat
The transfer sheet and the sheet to be transferred were overlapped and heated
If you try to remove both sheets later, the thermal transfer of the transfer sheet
The layer itself adheres to the receiving layer of the sheet to be transferred and peels off.
It is completely unusable. This cause
Is considered as follows. (I) The base film of the thermal transfer sheet
In general, polyethylene terephthalate (PET)
It is used, but it adheres firmly to this base film
Transfer layer binder should be low. (II) In order to obtain a high image density,
As the receiving layer of the thermal transfer sheet, the glass transition point and softening point
It is necessary to use low resin, but such resin is generally used
Is softened by the energy applied by the thermal head.
To become sticky. The present inventors have considered these facts.
As a result of our research, a heat transfer sheet with a specific configuration
The above drawbacks can be solved all at once by using
The inventors have found that the present invention has been completed. [0012] The present invention relates to the prior art.
The heat transfer dye
A thermal transfer sheet having a thermal transfer layer containing
By using in combination with a thermal transfer sheet
Therefore, the following objectives are to be achieved. (A) Receiving a layer to be thermally transferred during thermal transfer
Layer and the thermal transfer layer of the thermal transfer sheet are not thermally fused.
Therefore, the thermal transfer layer of the thermal transfer sheet
Transfer without sticking to the receiving layer
Providing a sheet. (B) Directly from the electrical signal
Color development with density, resolution and continuous gradation
Getting images. To achieve the above object, the present invention
Is provided with a receiving layer having the following properties.
A heat transfer sheet is provided.
Used in combination with a thermal transfer sheet. That is, the heat receiving of the first aspect according to the present invention
The transfer sheet consists of a substrate and a heat transfer sheet when heated.
Layer that receives the dye that migrates from the
Provided on the base material), and
Dyeing of medium-curable or photo-curable silicone oil
It is characterized by containing a mold release agent
You. Further, in the second aspect of the present invention, a heat transfer transfer system is provided.
The sheet moves from the thermal transfer sheet when heated
A receptor provided on the substrate on which the incoming dye is received
Layer and a catalyst provided on at least a part of the receiving layer
Dyes composed of curable or photo-curable silicone oil
And a permeable release agent layer. Preferred embodiments of the present invention will now be described with reference to the drawings.
Will be described. The heat transfer sheet according to the first embodiment of the present invention.
As shown in FIG. 1, a receiving layer 3 is formed on a substrate 2.
It is provided and configured. Further, the second aspect according to the present invention
As shown in FIG. 2, the heat transfer sheet 1 is
A receiving layer 3 is provided on the material 2 and at least the receiving layer 3 is provided.
Is also provided with a release agent layer 4 on a part thereof. The release agent layer 4 is provided on the entire surface of the receiving layer 3.
However, as shown in FIG.
It may be provided only on a part. The substrate 2 has a role of holding the receiving layer 3.
And heat is applied during thermal transfer.
Mechanical strength that does not hinder handling even when heated
It is desirable to have As a specific example of such a base material 2,
Denser paper, glassine paper, parchment paper or size degree
Flexible paper or plastic film
Examples include a thin sheet. Of these, capacitors
Paper and polyethylene terephthalate film are good
If heat resistance is important, use a condenser
Par is mainly used, and mechanical devices
Polyethylene terephthale
Film is mainly used. The thickness of this substrate 2
Is usually about 3 to 50 μm, preferably about 5 to 15 μm.
is there. The receiving layer 3 of the heat transfer sheet 1 is formed as described above.
In particular, dye that migrates from the thermal transfer sheet when heated
It works to accept fees, and specifically,
Such a thing is used. (A) Those having an ester bond: polyester resin, polyacrylate resin, poly
Carbonate resin, polyvinyl acetate resin, styrene
Relate resin, vinyl toluene acrylate resin, etc. (B) Those having urethane bonds such as polyurethane resins. (C) A polyamide resin having an amide bond. (D) Those having a urea bond, such as urea resins. (E) Others having a highly polar bond polycaprolactone resin, styrene-maleic anhydride resin
Fat, polyvinyl chloride resin, polyacrylonitrile resin
And so on. In addition to the above synthetic resins, these
Mixtures or copolymers may be used. The receiving layer 3 is made of two types having different properties.
It can also be formed from a resin. For example, -100 ~
Has a glass transition temperature of 20 ° C and polar groups
Forming the first region of the receiving layer with synthetic resin,
Receptive layer made of synthetic resin with glass transition temperature of over ℃
Can be formed. This first area and
The second region and the second region are both exposed on the surface of the receiving layer.
Area occupies more than 15% of the surface, the first areas are independent of each other
Exist in the shape of an island, and the length of each of the islands
The length in the direction is preferably 0.5 to 200 μm
No. Heat transfer sheet 1 according to the first embodiment of the present invention
Is dye-permeable in the receiving layer 3 made of the resin as described above.
Of a release agent. As such a release agent, solid wax is used.
, Fluorine-based or phosphate-based surfactants,
Silicone oils and the like are used. These compounds
Is added to the resin forming the receiving layer in advance, and the resulting resin
The receiving layer is obtained by applying and drying the fat mixture solution on the substrate
However, each release agent will be specifically described below. The solid wax is a resin forming the receiving layer 3.
It is preferable to disperse as fine particles in
Therefore, before adding the solid wax to the resin,
It is preferable to process with a mill, sand mill, etc.
No. As solid wax, polyethylene wax, a
Mid wax, Teflon powder and the like are used. This
Is contained in the resin in an amount of 5 to 50% by weight of the resin.
%, Preferably 10-20% by weight.
If the amount is less than 5% by weight, a sufficient releasing effect cannot be obtained.
In some cases, the thermal transfer layer may thermally adhere to the receiving layer. Also
If the amount exceeds 50% by weight, the heat transfer layer
Can no longer accept dyes that migrate from
In some cases, the resulting image may not have sufficient resolution.
Cheating. Fluorine or phosphate interface
The activator is also used as a release agent in the resin forming the receiving layer.
Is added. The surfactant added to the resin is
Part of it appears on the surface of the container layer, and therefore, the release effect is obtained.
It is thought that it is possible. As such a surfactant,
Plysurf is a concrete example of a phosphate ester compound.
A208S, Plysurf A210G, Plysurf D
B-01 (above Daiichi Kogyo Seiyaku), Gaffa RS-41
0, Gaffax RA-600, Gaffax RE610
(Toho Chemical Industry Co., Ltd.)
Unidyne DS501, Unidyne DS502 (D
Ikin Industries), FC430, FC431 (Sumitomo 3M)
And so on. This surfactant is contained in the resin.
It is added in an amount of 0.5 to 10% by weight of the fat weight. Amount added
Is less than 0.5% by weight, a sufficient releasing effect can be obtained.
Absent. If the addition amount exceeds 10% by weight, the receiving layer
The surface is sticky and dust easily adheres to the surface
When the transfer layer and the receiving layer come into contact, do not heat.
At least, the dye in the transfer layer migrates to the receiving layer.
Dirt occurs. Further, silicone oils also form the receiving layer.
Is added as a release agent to the resin to be used. Silicone oil
Oils can also be used,
The type is preferred. As a curable silicone oil
Include reaction curing type, light curing type, catalyst curing type, etc.
You. Of these, reaction-curable silicone oils are particularly preferred.
Good. [0031] Such curable silicone oils are
When used as a release agent, the above-mentioned surfactant-based release agent is used.
The surface of the receiving layer is sticky or dusty compared to
Does not adhere, so it is used in large quantities
You can also. Curable silicone oils can be used
Can be added in an amount of 0.5 to 30% by weight of the resin weight.
You. If the amount is less than 0.5% by weight, sufficient release effect is obtained.
Result, the thermal transfer layer may be thermally bonded to the receptor layer.
You. If the amount exceeds 30% by weight,
Dyes that migrate from the thermal transfer layer
The resulting image has sufficient recording density.
There is no case. As the reaction-curable silicone oil, a
Mino-modified silicone oil and epoxy-modified silicone oil
It is preferable to use a product obtained by reacting and curing an il. Amino-modified
Specific examples of corn oil include Shin-Etsu Chemical
KF-393, KF-857, KF-85 manufactured by K.K.
8, X-22-3680, X-22-3801C etc.
Used on the other hand as an epoxy-modified silicone oil
Is KF-100T, KF-101, X-60-16
4, KF-103 or the like is used. With a catalyst or photocurable silicone oil
KS705F-PS (catalyst), KS705F-PS
PS-1 (catalyst), KS720, KS770-PL-3
(Catalyst), KS774-PL-3 and the like. Heat transfer sheet 1 according to the second embodiment of the present invention
Is a receiving layer made of the resin on the base material 2 as described above.
3 on at least a part of the receiving layer 3.
Is provided with a release agent layer 4.
The agent layer 4 is formed by dissolving or dispersing the aforementioned release agent in an appropriate solvent.
And apply the resulting solution or dispersion onto the receiving layer 3.
It can be formed by clothing and then drying. The thickness of the release agent layer is 0.01 to 5 μm.
Preferably, it is 0.05 to 2 μm. Separation
If the thickness of the mold agent layer is less than 0.01 μm, sufficient release
No effect is obtained. On the other hand, if it exceeds 5 μm, the permeability of the dye
It is not preferable because it is hindered. As described above, the release agent layer 4 covers the entire receiving layer 3.
May be provided on the surface, but only on a part of the receiving layer 3.
May be provided. Generally, the release agent layer has a description on it
Is difficult to print, while printing on the receiving layer
It is possible to do. Therefore, on the heat transfer sheet
If it is necessary to print, replace the release agent layer with the receiving layer.
Is preferably provided only on a part of. The thermal transfer sheet 1 as described above is used for thermal transfer.
Used in combination with a sheet. Typical thermal transfer system
As shown in FIG. 4, the support 5 is provided on one side of the support 6.
A thermal transfer layer 7 is provided.
7 is the transfer of the coloring material contained therein when heated
It is designed to move onto the sheet. As such a coloring material, about 150 to 40
Disperse dyes and oils having a relatively small molecular weight of about 0
Dyes, certain basic dyes, or these dyes
Intermediates that can be converted into
Considering shooting temperature, thermal transfer efficiency, hue, color rendering, weather resistance, etc.
Select and use. The above-mentioned coloring materials are used for forming a thermal transfer layer.
Dispersed in synthetic resin binder and provided on support 6
Can be As such synthetic resin binder,
Usually, the heat resistance is high and the color material that occurs when heated
It is preferable to choose one that does not hinder the transition,
For example, the following are used. (I) Cellulosic resin ethyl cellulose, hydroxyethyl cellulose, ethyl
Hydroxycellulose, hydroxypropyl cellulose
, Methylcellulose, cellulose acetate, cellulose acetate butyrate
Etc. (II) vinyl resin polyvinyl alcohol, polyvinyl acetate, polyvinyl
Tylal, polyvinylpyrrolidone, polyester, poly
Acrylamide and the like. Among the above synthetic resin binders, heat resistance
From the point of view, polyvinyl butyral resin or cell
Loin-based resins are preferred. To provide the thermal transfer layer 7 on the support 6,
Material and synthetic resin binder with solvent or diluent
Kneaded into a coating composition for a thermal transfer layer,
If provided on the support 6 by a printing method or a coating method,
Good. Incidentally, if necessary, in the thermal transfer layer coating composition
Optional additives may be added. The basic structure of the thermal transfer sheet is as described above.
However, contact-type heating means such as a thermal head
In the case of directly heating the surface of the support,
As shown in the figure, the thermal transfer layer of the support 6 is not provided.
Lubricious layer 8 containing a lubricant such as wax or a release agent on the side
By providing a heating means such as a thermal head
To prevent fusion between the
Can be The thermal transfer sheet prepared as described above
The heat transfer sheet and the sheet to be heat-transferred are thermally transferred as shown in FIG.
The thermal transfer layer of the copying sheet is in contact with the receiving layer of the thermal transfer sheet
So that they are superimposed face-to-face with the thermal transfer layer
Applying thermal energy to the layer interface according to image information
With this, the color material in the thermal transfer layer is received according to the thermal energy.
It can be transferred to the reservoir. Hereinafter, the present invention will be described with reference to examples.
The invention is not limited to these examples. <Example-1> An ink composition for forming a receiving layer having the following composition was prepared.
Synthetic paper, YUPOFPG, prepared and used as base material ^# To 150
4.0 g / m dry coating weight ^Two And then apply
It was dried to obtain a heat transfer sheet. Polyester resin: Vylon 200 (Toyobo) 1 part by weight Amino-modified silicone: KF-393 (Shin-Etsu Chemical) 0.03 parts by weight Epoxy-modified silicone: X-22-343 (Shin-Etsu Chemical) 0.03 parts by weight 8. Methyl ethyl ketone / toluene / cyclohexanone (weight ratio 4: 4: 2) Next, an ink composition for forming a thermal transfer layer having the following composition is prepared.
And dried on 9μm thick PET with heat resistant treatment on the back
1.0 g / m coating amount ^Two Apply, dry and heat roll
A copy sheet was obtained. Disperse dye: KST-B-136 (Nippon Kayaku) 0.4 parts by weight Ethyl hydroxyethyl cellulose (Hercules) 0.6 parts by weight Methyl ethyl ketone / toluene (weight ratio 1: 1) 9.0 parts by weight Thermal transfer obtained A heat transfer layer of the sheet and the heat transfer sheet
Heat-receiving layer facing each other.
After printing from the thermal transfer sheet side with the head and printing,
When the sheet is peeled off, the receiving layer and the transfer layer are easily removed.
Transfer resin on the receiving layer
However, a recorded image having continuous gradation was obtained. <Example-2> An ink composition for forming a receiving layer having the following composition was prepared.
YUPOFPG synthetic paper prepared and used as a base material ^# On 150
4.0 g / m dry coating weight ^Two Apply and dry to make
A receiving layer was formed. Polyester resin: Vylon 200 (Toyobo) 1.0 part by weight Methyl ethyl ketone / toluene (weight ratio 1: 1) 9.0 parts by weight ^# 6
Is applied on the polyester resin layer using
Dry at 0 ° C. for 5 minutes. Amino-modified silicone: 1.0 part by weight of KF-393 Epoxy-modified silicone: 1.0 part by weight of X-22-343 25.0 parts by weight of ethanol 23.0 parts by weight of isopropyl alcohol In this case, release agent layer formation Solution has a dry coating amount of about 0.1
5g / m ^Two It was applied so that Example 1
When recording was performed under the same printing conditions as in
No heat fusion occurred to the film, indicating good releasability. <Example-3> Polyester having the same composition as in Example-2
The solution is A5 size (148 mm x 210 mm) synthetic paper Y
UPOFPG ^# Apply to the entire surface of 150, dry and accept tree
A fat layer was formed (dry coating amount 4.0 g / m ^Two ). Next, a release agent layer having the same composition as in Example-2
Ink composition, by gravure printing method, half of A6 size
Was applied to the area and dried to form a release agent layer (release agent layer
Thickness: about 0.1 μm). Next, only at the portion where the release agent layer is formed,
When sublimation transfer recording was performed in the same manner as in the above example,
Also in this case, no peeling of the transfer layer occurs at all,
I showed the type. Next, only the remaining polyester resin layer
Thermal transfer printer TN5000 (Toshiba Corporation)
Then, after thermal transfer printing with wax, clear black
Was obtained, and the brushability was confirmed. <Example-4> An ink composition for forming a receiving layer having the following composition was prepared.
YUPOFPG synthetic paper prepared and used as a base material ^# Paint 150
Cloth and dried at 100 ° C. for 10 minutes (dry coating amount: about
4.5 g / m ^Two ). Polyester resin: Vylon 103 (Toyobo Tg = 47 ° C.) 0.8 parts by weight EVA polymer plasticizer: Elvaloy 741P (Mitsui Polychemicals Tg = −37 ° C.) 0.2 parts by weight Amino-modified silicone: KF857 (Shin-Etsu Chemical) 0.04 parts by weight Epoxy-modified silicone: KF103 (Shin-Etsu Chemical) 0.04 parts by weight Methyl ethyl ketone / toluene / cyclohexanone (weight ratio 4: 4: 2) 9. 0 parts by weight Next, when printing was performed in the same manner as in Example-1, good separation was obtained.
The transfer layer showed moldability, and no peeling of the transfer layer occurred. <Example-5> An ink composition for forming a receiving layer having the following composition was prepared.
Synthetic paper YUPOFPG prepared and used as a base ^# To 150
Coated and dried (dry coating amount 4.0 g / m ^Two ). [0052] Polyurethane elastomer (Dainippon Ink Chemicals Pande)
0.55 parts by weight polyvinyl butyral (Sekisui Chemical, Eslec BX-1)
Tg = 83 ° C.) 0.5 parts by weight methyl ethyl ketone / toluene / ethyl cellosolve (weight
(4: 4: 2) 9.0 parts by weight
Under the conditions, it was applied on the receiving layer and dried to form a release agent layer. This was performed in the same manner as in Example 1, and the thermal
When printing with the head, the transfer layer is thermally fused to the receiving layer
No good peelability was exhibited. <Example 6> An ink composition for forming a receiving layer having the following composition was prepared, and a base material was prepared.
Certain synthetic paper (YUPOFPG # 150: Oji Yuka synthetic paper)
Co., Ltd.) has a dry coating amount of 4.0 g / m. ² Paint to become
Cloth, then dried at 130 ° C for 3 minutes to transfer heat
I got a sheet. Ink composition for forming receiving layer Polyester resin (Vylon 200: Toyobo Co., Ltd.) 1.0 part by weight Catalyst-curable silicone oil (KS-774: Shin-Etsu Chemical Co., Ltd.) 0.2 part by weight Catalyst (CAT-PL4) : Shin-Etsu Chemical Co., Ltd. 0.005 parts by weight Methyl ethyl muketone / toluene = 1/1 9.0 parts by weight As the thermal transfer sheet, a commercially available thermal transfer sheet (VY-S) is used.
S50: Hitachi, Ltd. was used. This thermal transfer system
And a heat transfer layer for receiving the heat transfer sheet.
Lay the container on top of each other,
After heating from the thermal transfer sheet side with a pad and printing,
The receiving layer and the transfer layer are easily peeled off, and the transfer layer resin
Recording with continuous gradation without any peeling
An image was obtained. <Example 7> Except that the following ink composition for forming a receiving layer was used,
A heat transfer sheet was prepared in the same manner as in Example 6. Ink composition for forming receiving layer Polyester resin (Vylon 200: Toyobo Co., Ltd.) 1.0 part by weight Catalyst-curable silicone oil (KS-705F: Shin-Etsu Chemical Co., Ltd.) 0.2 part by weight Catalyst (CAT-PS3) : Shin-Etsu Chemical Co., Ltd.) 0.005 parts by weight Methyl ethyl ketone / toluene = 1/1 9.0 parts by weight When printing was performed in the same manner as in Example 6, the receiving layer and the transfer layer were printed.
Is easily peeled off, such as peeling of the transfer layer resin into the receiving layer.
The recorded image with continuous gradation is obtained without
Was. <Example 8> An ink composition for forming a receiving layer having the following composition was prepared, and
The amount of dry coating on certain synthetic paper (YUPOFPG # 150)
4.0 g / m ² And then at a temperature of 130 ° C
For 3 minutes. Ink composition for forming receiving layer Polyester resin (Vylon 200: Toyobo Co., Ltd.) 1.0 part by weight Methyl ethyl muketone / toluene = 1/1 9.0 parts by weight Next, a solution for forming a release agent layer having the following composition The Miyabar ^# 6 was applied onto the polyester resin layer and dried at 130 ° C. for 3 minutes to obtain a heat transfer sheet. Catalyst curing type silicone oil (KS-774: Shin-Etsu Chemical Co., Ltd.) 2 parts by weight Catalyst (CAT-PL4: Shin-Etsu Chemical Co., Ltd.) 0.05 parts by weight Toluene 97 parts by weight For forming a release layer in this case The solution has a dry coverage of about 0.1
g / m ² It was applied so that Obtained in this way
Printed on the heat transfer sheet in the same manner as in Example 6.
As a result, the releasability of the transfer layer resin
The recording with continuous gradation without any peeling
A recorded image was obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a heat transfer sheet according to the present invention. FIG. 2 is a sectional view of a heat transfer sheet according to the present invention. FIG. 3 is a sectional view of a heat transfer sheet according to the present invention. FIG. 4 is a sectional view of a thermal transfer sheet used in combination with a thermal transfer sheet. FIG. 5 is a sectional view of a thermal transfer sheet used in combination with a thermal transfer sheet. FIG. 6 is a cross-sectional view when a thermal transfer sheet and a thermal transfer sheet are used in combination. [Description of Signs] 1 Thermal transfer sheet 2 Substrate 3 Receptive layer 4 Release agent layer 5 Thermal transfer sheet 6 Support 7 Thermal transfer layer 8 Slip layer

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Kazuyuki Sakota               1-20-11 Natsumidai, Funabashi City, Chiba Prefecture                (56) References JP-A-60-220794 (JP, A)                 JP-A-48-79016 (JP, A)

Claims (1)

(57) [Claims] A heat transfer sheet used in combination with a heat transfer sheet having a heat transfer layer containing a heat transferable dye, on the heat transfer sheet by applying heat energy according to an image signal from a thermal head or a laser. In the heat transfer sheet configured to form an image with the heat transferable dye, a base material, and a receiving layer provided on the base material for receiving the dye transferred from the heat transfer sheet when heated. Wherein the receiving layer contains a dye-permeable release agent comprising a catalyst-curable silicone oil in an amount of 0.5 to 3 parts by weight of the receiving layer
A heat transfer sheet used in combination with a thermal transfer sheet, characterized in that it is contained in an amount of 0% by weight. 2. A heat transfer sheet used in combination with a heat transfer sheet having a heat transfer layer containing a heat transferable dye, on the heat transfer sheet by applying heat energy according to an image signal from a thermal head or a laser. In the heat transfer sheet configured to form an image with the heat transferable dye, a base material, and a receiving layer provided on the base material for receiving the dye transferred from the heat transfer sheet when heated. And a dye-permeable release agent layer made of a catalyst-curable silicone oil provided on at least a part of the receiving layer. 3. The release agent layer has a thickness of 0.01 to 5 μm,
The heat transfer sheet according to claim 2. 4. The heat transfer sheet according to claim 2, wherein the release agent layer is provided over the entire surface of the receiving layer.