JP3423596B2 - Sublimation type thermal transfer recording body and sublimation type thermal transfer recording image receiver - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a thermal head,
The present invention relates to a transfer body and an image receiving body used for sublimation thermal transfer recording using recording means such as an optical head such as a laser and an energizing head.

[0002]

2. Description of the Related Art In sublimation type thermal transfer recording, a transfer body and an image receiving body are usually superposed between a recording head and a platen, and the back surface of the transfer body is heated by a recording head which generates heat in response to a recording signal. The dye in the color material layer on the surface of the transfer body is transferred to the dyeing layer of the image receiving body by a transfer process such as sublimation or diffusion to form a recorded image on the image receiving body. In this recording process, a large amount of heat energy is applied from the recording head in a state where the color material layer of the transfer body and the dyeing layer of the image receiver are in surface contact with each other, and the dye in the color material layer is dyed. Since heat resistance of the polymer used in the coloring material layer and the dyeing layer cannot be so high in order to facilitate the transfer into the dyeing layer, heat fusion is likely to occur at the contact surfaces of both layers. Therefore, in order to prevent heat fusion, various releasing agents and the like are usually added to both layers.

Further, when recording with a printer, a plurality of image receivers are apt to be fed in an automatic paper feeding unit in which a large number of image receivers are set. Therefore, in order to improve the traveling property between the image receivers, the image receivers are improved. Various kinds of lubricity are applied to the back surface of the.

For example, the polyoxyalkylene silicone described in JP-A-7-164768, which contains a releasing polymer in the color material layer of the transfer member, and the polyoxyalkylene silicone described in JP-A-61-244589, as the dyeing layer of the image receptor. There are a number of materials using a copolymer, those using a reaction-curing silicone oil described in JP-A-61-237694, and those using silicone particles described in JP-A-1-176588. .

[0005]

Non-reactive release agents such as polyoxyalkylene silicone copolymers, which have been proposed hitherto, are mainly excellent in heat fusion preventing property, but have new problems. ing. That is, several winding operations such as winding at the time of manufacturing and winding at the time of slitting are performed before the transfer body is manufactured and finally wound around the cassette. When a non-reactive release agent is used in the color material layer of the transfer body during this winding operation, the release agent in the color material layer of the transfer body is transferred because the conventional one does not have a large molecular weight. Easy to transfer to the back of the body. Therefore, the dye can be easily transferred to the release agent transferred to the back surface, or because the dye is dissolved in the release agent, the dye is transferred together with the transfer of the release agent and finally wound around the cassette. After that, when the transfer body is wound and stored under high temperature and high humidity conditions, the dye transferred to the back surface of the transfer body is retransferred to another color material layer surface on the front surface to contaminate the other color material layer. The problem occurs. On the other hand, the reaction-curing silicone oil has excellent heat-sealing prevention properties, and there are few free low-molecular-weight silicone oils, so there is little problem of dye contamination, but reaction-curing paints containing expensive dyes used to form the color material layer are cured. Since it is a mold, it has a problem that it is difficult to reuse. Silicone particles are effective against dye stains, but have poor heat fusion resistance.

Similarly, when added to the dyeing layer of the image receptor, the conventional non-reactive releasing agent such as polyoxyalkylene silicone copolymer is mainly released from the dyeing layer forming resin because its molecular weight is not so large. When the image receptor having the recorded image is stored under high temperature and high humidity, a part of the recorded image dye is released together with the release agent, and when the image receptor is contacted by hand after storage, it is recorded as 1 part of the dye. There is a problem in that the part is retransferred to the hand, that is, the so-called dye fixing property is deteriorated. The reaction-curing silicone oil has few problems of storage at high temperature and high humidity, but it has a problem that it is difficult to reuse the dyeing layer forming coating material as in the case of the color material layer. Even when the silicone particles are used in the dyeing layer, the heat fusion preventing property is not so good.

When a plurality of image receivers having a recorded image are superposed and stored under high temperature and high humidity conditions, the dye of the recorded image is formed on the resin layer on the back surface of the image receptor having the dyeing layer formed on the surface. Similarly, there is a problem of retransferring and contaminating the back surface of the image receptor.

The invention of the present application has an excellent property of preventing thermal fusion between the transfer body and the image receiving body, shows good storage characteristics with little dye contamination such as dye retransfer even after storage under high temperature and high humidity conditions, The object is to obtain a reusable and economical sublimation type transfer body for thermal transfer recording and an image receiving body.

[0009]

In order to solve the above problems, the sublimation type thermal transfer recording transfer material of the present invention has a dye, a binder and a polysiloxane-polyoxyalkylene block on one surface of a substrate. In a transfer body having a coloring material layer containing a polymer, the polysiloxane-polyoxyalkylene block copolymer has a structural unit represented by the general formula (Formula 6).

[Chemical 6] [In the formula, a and b are each an integer of 2 or more, and R1
Is a hydrogen atom or a monovalent hydrocarbon group, R2 is a monovalent hydrocarbon group, each R1 and each R2 may be the same or different, and n is an integer of 2 to 4, _n H _2n
The —O) _b unit may have two or more (C _n H _2n —O) _b units having different n values, and at this time, the b values may be the same or different. ]

According to a second aspect of the present invention, in the sublimation type thermal transfer recording transfer article of the first aspect, the polysiloxane-polyoxyalkylene block copolymer is represented by the general formula (Formula 2). [In the formula (Formula 2), a and c are integers of 2 or more, R2 is a monovalent hydrocarbon group, each R2 may be the same or different, and R3 is an ethylenically unsaturated group-containing monomer. Is a residue saturated with H, and Y is (Chemical formula 1) in claim 1. ]

The invention of claim 3 is the transfer material for sublimation type thermal transfer recording according to claim 1 or 2, wherein the dye is an indoaniline dye.

According to a fourth aspect of the invention, in the image receptor having a dyeing layer containing a dyeing resin and a polysiloxane-polyoxyalkylene block copolymer on one surface of the substrate, the polysiloxane- The polyoxyalkylene block copolymer has the general formula (Formula 3) [wherein, a and b are each an integer of 2 or more, R1 is a hydrogen atom or a monovalent hydrocarbon group, and R2 is a monovalent hydrocarbon group. And each R1 and each R2 may be the same or different, and n is 2 to
Is 4 integer, (C _n H _2n -O) _b units, different n values (C _n H _2n -O) a _b units may have two or more, this time b values are the same or May be different].

Further, the invention of claim 5 has a dyeing layer on one surface of the substrate, and contains a polymer and a polysiloxane-polyoxyalkylene block copolymer on the other surface of the substrate. In the image receptor having a resin layer, the polysiloxane-polyoxyalkylene block copolymer has the general formula (Formula 4) [in the formula, a and b are each an integer of 2 or more, and R1 is a hydrogen atom or a monovalent group]. R2 is a monovalent hydrocarbon group, each R1 and each R2 may be the same or different, and n is an integer of 2 to 4,
(C _n H _2n -O) _b units, n value different (C _n H _2n -
O) _b units may have two or more units, and b values at this time may be the same or different.].

According to a sixth aspect of the present invention, in the sublimation type thermal transfer recording image receptor of the fourth or fifth aspect, the polysiloxane-polyoxyalkylene block copolymer is represented by the general formula (Formula 5).
It is shown by. [In Formula (Formula 5), a and c are 2
The above integers, R2 is a monovalent hydrocarbon group, each R2 may be the same or different, R3 is a residue in which an ethylenically unsaturated group-containing monomer is saturated with H, and Y is It is (Chemical Formula 3) or (Chemical Formula 4) described in 4 or 5. ]

[0015]

1 and 2 are schematic cross-sectional views of an embodiment of a sublimation type thermal transfer recording transfer member (hereinafter abbreviated as a transfer member) of the present invention. The transfer body of FIG. 1 has at least a color material layer 2 on one surface of a base material 1. The transfer body shown in FIG. 2 has a structure in which at least the coloring material layer 2 is provided on one surface of the base material 1 and at least the slip heat resistant layer 3 is provided on the other surface.

The substrate 1 is not particularly limited. For example, there are various polymer films, polymer films surface-treated by coating or the like, or various conductive films. As various polymer films, for example, polyolefin-based, polyamide-based, polyester-based, polyimide-based,
Polyether type, cellulose type, polyparabanic acid type, polyoxadiazol type, polystyrene type, fluorine type films and the like. In particular, polyethylene terephthalate, polyethylene naphthalate, aramid, triacetyl cellulose, polyparabanic acid, polysulfone, polypropylene, cellophane, moisture-proof cellophane, or polyethylene film is useful. In addition, an adhesive layer (anchor layer) is provided on the surface of the polymer film or conductive film in contact with the sublimation type color material layer containing a sublimable (or diffusible) dye so that the color material layer does not peel off from the film during recording. It is desirable to use a polymer film or a conductive film provided with a coating layer) as a substrate. As various conductive films, for example, polymer films containing various conductive particles such as carbon black and metal powder, and polymer films having a conductive vapor deposition layer are useful.

The slip heat resistant layer 3 is composed of at least a thermoplastic resin and a lubricant, or a thermosetting resin and a lubricant. Alternatively, fine particles, a surfactant and the like may be added.

The color material layer 2 is composed of at least a dye, a binder and a polysiloxane-polyoxyalkylene block copolymer, and the polysiloxane-polyoxyalkylene block copolymer is represented by the general formula (Formula 7). It has a constitutional unit described below.

[Chemical 7] [In the formula, a and b are each an integer of 2 or more, and R1
Is a hydrogen atom or a monovalent hydrocarbon group, R2 is a monovalent hydrocarbon group, each R1 and each R2 may be the same or different, and n is an integer of 2 to 4, _n H _2n
The —O) _b unit may have two or more (C _n H _2n —O) _b units having different n values, and at this time, the b values may be the same or different. ]

As the polysiloxane-polyoxyalkylene block copolymer having the constitutional unit represented by the general formula (Formula 7), for example, one represented by the following general formula (Formula 8) or the following general formula (Formula 7) What is shown by 9) can be used.

[Chemical 8] [Wherein a and c are integers of 2 or more, R2 is a monovalent hydrocarbon group, and each R2 may be the same or different,
Y is the above general formula (Formula 7)]

[Chemical 9] [In the formula, a and c are integers of 2 or more, R2 is a monovalent hydrocarbon group, and each R2 may be the same or different,
R3 is a residue in which an ethylenically unsaturated group-containing monomer is saturated with H, and Y is the above general formula (Formula 7). ]

As the ethylenically unsaturated group-containing monomer,
For example, (1) acrylic acid, methacrylic acid and its derivatives (acrylic acid, methacrylic acid, methyl acrylate, methyl methacrylate, acrylic acid amide, acrylonitrile, n-butyl methacrylate, etc.), (2) aromatic vinyl unit (Styrene, α-methylstyrene, etc.), (3) vinyl ether monomer (vinyl methyl ether, etc.), (4) vinyl halide monomer (vinyl chloride, etc.), (5) olefin hydrocarbon unit amount There is a body (such as propylene). The ethylenically unsaturated group-containing monomer is preferably one having an epoxy group, an amino group, a hydroxy group, a carboxyl group, or the like.

For example, acrylic acid, acrylic acid amide,
2,3-epoxypropyl methacrylate [CH ₂ ═C
_{(CH 3) COOC 3 H 5} O ], 2-hydroxyethyl methacrylate - DOO _{[CH 2 = C (CH 3)} COOCH 2 C
H ₂ OH], 2-hydroxypropyl methacrylate - DOO _{[CH 2 = C (CH 3)} COOCH 2 CH (OH) CH
₃ ], 2- (diethylamino) ethyl methacrylate [CH ₂ ═C (CH ₃ ) COOCH ₂ CH ₂ N (C ₂ H
₅ ) ₂ ] etc. can be used.

An example of a polysiloxane-polyoxyalkylene block copolymer having a structural unit represented by the general formula (Formula 1), a method for producing the same, and the like are disclosed in JP-A-4-35902.
No. 3, for example. For example, the compound represented by the general formula (Formula 8) can be obtained by reacting a linear polysiloxane compound having at least Si-H groups at both ends with an oxyalkylene compound having an ethylenically unsaturated group at both ends. The compound represented by the general formula (Chemical formula 9) can be obtained by reacting the one represented by the general formula (Chemical formula 8) with an ethylenically unsaturated group-containing monomer (for example, acrylic acid as described above). You can

The dye is not particularly limited. For example, disperse dyes, acid dyes, basic dyes, oil-soluble dyes and the like can be used.

The binder for the color material layer 2 is also not particularly limited. For example, polyester-based resin such as saturated polyester, polyvinyl chloride, chlorinated vinyl chloride, vinyl chloride-vinyl acetate, vinyl chloride-based resin such as vinyl chloride-acrylic acid ester, polymethylmethacrylate, acrylonitrile-
Acrylic resin such as styrene resin, polyvinyl former
It is possible to use polyvinyl acetal-based resins such as polyvinyl alcohol and polyvinyl butyral, and cellulose-based resins such as methyl cellulose, ethyl cellulose and hydroxyethyl cellulose. Further, these resins may be hardened with a crosslinking agent or a hardening agent and used as a binder.

FIGS. 3 and 4 are schematic sectional views showing an embodiment of a sublimation type thermal transfer recording image receptor of the present invention (hereinafter abbreviated as an image receptor). The image receptor of FIG. 3 has at least the dyeing layer 5 on one surface of the substrate 4. The image receiver of FIG.
At least the dyeing layer 6 is provided on one surface of the substrate 4, and at least the resin layer 7 is provided on the other surface.

The base material 4 is not particularly limited. For example, polyethylene, polypropylene, polyethylene terephthalate resin films, various polymer films such as white films produced by stretching after adding fine particles to the various resins, or paper, art paper, etc. Synthetic resin-based paper such as cellulosic or synthetic paper, or the above polymer films, papers each other, laminates of the polymer film and paper, or anchors to the film, paper, laminate or the like. A coated product can be used.

The dyeing layer 5 is composed of at least a dyeing resin and a polysiloxane-polyoxyalkylene block copolymer having a structural unit represented by the general formula (Formula 7). The dyeing layer 6 is composed of at least a dyeing resin and a release agent. The resin layer 7 is composed of at least a polymer substance and a polysiloxane-polyoxyalkylene block copolymer having a constitutional unit represented by the general formula (Formula 7).

Examples of the polysiloxane-polyoxyalkylene block copolymer having the structural unit represented by the general formula (Formula 7) include those represented by the general formula (Formula 8) or the general formula (Formula 9). What is shown can be used for the dyeing layer 5 and the resin layer 7.

Silicone oil, reactive silicone oil or the like can be used as a release agent for the dyeing layer 6.
Of course, a polysiloxane-polyoxyalkylene block copolymer having a structural unit represented by the general formula (Formula 7) can be used as a release agent for the dyeing layer 6.
The dyeable resin is not particularly limited. Various resins described as the binder of the color material layer 2 can be used.

The polymer substance of the resin layer 7 is not particularly limited. For example, a resin having a small polarity such as polyethylene or polypropylene is preferable. Also, acrylic type, amide type,
Ether-based, polyester-based, cellulose-based, epoxy-based, urethane-based, imide-based, epoxy acrylate, polyester acrylate, urethane acrylate and other acrylate-based resins, aminoalkyd resins It is also possible to use an alkyd resin such as, and a xylene resin such as xylene formaldehyde. In particular, saturated polyester, acrylic polyol, polyester polyol, polyether polyol, polycarbonate, diol, polyurethane, phenol resin, polyvinyl acetal resin,
Resins having active hydrogen such as cellulosic resins are reacted with respective crosslinking agents such as isocyanate, glyoxal, phenol, melamine and epoxy compound to form a crosslinked structure to improve heat resistance. Among other cross-linking resins, a resin having high heat resistance and difficult to be dyed with a dye is preferable. Further, various resins described as the binder of the color material layer 2 are preferably highly heat resistant, cross-linkable or curable.

Since the polysiloxane-polyoxyalkylene block copolymer of the present application has a structure in which polyoxyalkylene is incorporated in the main chain, it is possible to synthesize one having a high molecular weight. In the present application, the molecular weight is not particularly limited, but usually 10,000 to 80,000 is good. As a result of applying this copolymer to the color material layer of the transfer body, the dyeing layer of the image receptor, or the resin layer of the image receptor, it is possible to obtain a transfer body and an image receptor having more excellent storage properties than conventional ones. It has been found.

The reason why a transfer material and an image receiving material having excellent storage characteristics can be obtained is, for example, a transfer material having a polyoxyalkylene in the side chain, which has been proposed for a transfer material, or a silicone.
Most 99% or more of the main chain release agents are polysiloxanes, so affinity with dyes and resins in the containing layer is not very good, and the molecular weight is not so high, so that room temperature and high temperature are high. Although it is easy to transfer from a coloring material layer or a dyeing layer to a contact partner under humidity, the polysiloxane-polyoxyalkylene block copolymer of the present application has almost no side chain component and therefore increases in molecular weight. The ratio of polysiloxane in the main chain is relatively reduced because it has a polyoxyalkylene structure in the main chain, so the dye, the binder in the color material layer, and the dyeing property of the image receptor It is considered that the affinity of the resin or the resin layer with the polymer substance is improved more than ever, and it is difficult for the resin or the resin layer to be transferred to another layer. Further, since the polysiloxane content can be increased by increasing the molecular weight, it also has the property of preventing heat fusion between the coloring material layer and the dyeing layer. As in the conventional case, it also has antistatic properties due to polyoxyalkylene.

In particular, the polysiloxane-polyoxyalkylene block copolymer of the present application has good recording sensitivity among dyes, and is therefore useful for indoaniline dyes which are easily transferred.

The polysiloxane-polyoxyalkylene block copolymer represented by the general formula (Formula 8) can be used as a non-reactive system. For example, a compound containing a vinyl group (for example, a vinyl group-containing silicone). Alternatively, it can be used as a reaction system in combination with a vinyl group-containing hydrocarbon) or silanol-modified silicone oil.
Examples of the catalyst include zinc-based or tin-based catalysts such as zinc octylate, tin octylate and dibutyltin dilaurate, platinum-based catalysts such as chloroplatinic acid, and peroxide catalysts. It can also be reacted. The coloring material layer 2, the dyeing layer 5, the dyeing layer 6 or the resin layer 7 may contain fine particles, a surfactant or the like.

The fine particles may be organic fine particles or inorganic fine particles and are not particularly limited. For example, JP-A-60
The fine particles described in JP-A-82385, JP-A-60-219094, JP-A No. 2-8087, JP-A-5-16548, JP-A-5-177926, JP-A-6-65396 and the like can be used. .

The surfactant is not particularly limited. For example, various surfactants described in JP-A-59-196291 can be used. Particularly, a phosphate ester-based surfactant is desirable because it is excellent in lubricity and / or antistatic property. For example, the product name Fosfanol (product number:
RS-410, RS-710, RL-210, RD-5
10Y, GB-520, Toho Chemical Industry Co., Ltd.) are useful. The surfactant is effective in preventing the transfer body and the image receiving body from being charged with electricity, preventing thermal fusion between the transfer body and the image receiving body, and the like.

The respective compounding ratios of the polysiloxane-polyoxyalkylene block copolymer to the binder of the color material layer, the dyeing resin of the dyeing layer and the polymer substance of the resin layer are not particularly limited. Usually, the copolymer is used in the range of 0.1 to 30 parts by weight with respect to 100 parts by weight of the binder (or the dyeable resin or the polymeric substance).

The compounding ratio of the dye in the color material layer is not particularly limited. Usually, the dye is 25 to 15 with respect to 100 parts by weight of the binder.
Used in the range of 0 parts by weight. The mixing ratio of the fine particles is not particularly limited. Usually, the fine particles are used in the range of 0.1 to 200 parts by weight with respect to 100 parts by weight of the binder (or the dyeable resin or the polymeric substance). The compounding ratio of the surfactant is not particularly limited. Usually, the amount of the surfactant is 0.1 to 30 with respect to 100 parts by weight of the binder (or the dyeable resin or the polymer).
Used in the range of parts by weight.

[0039]

EXAMPLES Specific examples will be described below. The polysiloxane-polyoxyalkylene block copolymers used in the examples are shown in (Table 1) and (Table 2).

[Table 1]

[Table 2] In addition, the dyes used in the examples (Table 3) and (Table 4)
Shown in.

[Table 3]

[Table 4]

Example 1 PE having an anchor coat layer (thickness of about 0.1 μm) made of urethane resin on the upper surface
The surface of the T film (width: 120 mm, thickness: 4.5 μm) was coated with the following lubricant heat-resistant layer coating with a micro gravure coater, and then dried with hot air at 100 ° C. to obtain a lubricant heat-resistant layer (film thickness: About 1.1 μm) to form a PET film with a slip heat resistant layer (coating length: about 2000 m). Next, on the anchor coat layer of the PET film with the slip heat resistant layer, the following C color material layer paint (abbreviation of cyan color material layer paint) and Y color material layer paint (abbreviation of yellow color material layer paint) ) Is applied by a microgravure coater so that the C and Y color material layers are repeated frame-sequentially, and after the application, it is dried with hot air at 100 ° C. to prepare a transfer member (C, Y). Length of each single color material layer: About 160
mm, length of non-coated portion between CY color material layers: about 10 mm,
Coating head: about 30m). Thickness of both color material layers is about 0.9 μm
Is. The parts by weight of the constituents of each paint represent the blending ratio of the constituents (the same applies to each of the following examples). (Sliding heat-resistant layer coating material) Polyvinyl acetal resin 10 parts by weight (KS-5, Sekisui Chemical Co., Ltd.) Silicone graft acrylic resin 25 parts by weight (X-22-8004, solid content 40 wt%, Shin-Etsu Chemical) Industrial Co., Ltd.) 1 part by weight of amino-modified silicone oil (KF857, Shin-Etsu Chemical Co., Ltd.) 1 part by weight of epoxy-modified silicone oil (X-60-164, Shin-Etsu Chemical Co., Ltd.) 2-butanone 60 parts by weight Toluene 40 Parts by weight (C color material layer coating material) Acrylonitrile-styrene copolymer 8 parts by weight (AS-S, Denki Kagaku Kogyo Co., Ltd.) Dye (symbol P1 in Table 3) 5.6 parts by weight Polysiloxane-polyoxyalkylene block co Polymer 0.2 parts by weight (symbol F1 in Table 1) 2-butanone 50 parts by weight Toluene 50 parts by weight (Y color material layer paint) Nitrile-styrene copolymer (AS-S) 8 parts by weight Dye (symbol Y1 in Table 4) 4 parts by weight Polysiloxane-polyoxyalkylene block copolymer 0.2 parts by weight (symbol F1 in Table 1) 2-butanone 50 parts by weight Toluene 50 parts by weight

Next, an anchor coat of a white PET film (thickness: about 100 μm) having an isocyanate-crosslinked polyester-based anchor coat layer (thickness: about 0.1 μm) on the upper surface.
After coating the following dyeing layer coating on the coating layer with a microgravure coater, it is dried with hot air at 100 ° C. and the dyeing layer (thickness: about 3
μm) to form an image receptor. (Dyeing layer paint) Polyvinyl butyral resin 10 parts by weight (BL-3, Sekisui Chemical Co., Ltd.) Amino-modified silicone oil 0.5 parts by weight (KF857, Shin-Etsu Chemical Co., Ltd.) Epoxy-modified silicone oil 0.5 parts by weight (X-60-164, Shin-Etsu Chemical Co., Ltd.) 2-butanone 50 parts by weight Toluene 30 parts by weight

Next, the transfer member produced above was slit into a width of 98 mm, and about 2 mm was put on a Bakelite bobbin having an outer diameter of about 30 mm.
After winding 0 m, 1 in a constant temperature and humidity chamber at 50 ° C and 60% RH.
After storage for 0 days, the C color material layer of the transfer body and the image receiving body were superposed, and both were sandwiched between the thermal head and the platen, and recording was performed under the following recording conditions. Recording density for main and sub-scanning: 6 dots / mm Recording heat quantity: Variable recording cycle: 16 ms / Line head heating time: 4 ms Recording length: 100 mm Recording heat quantity of 5 J / cm ² Cyan single color on dye layer of image receptor As a result of recording an image (recording density 2.06, measured with a Macbeth densitometer), no yellow color mixture occurred in the cyan image. Similarly, the Y color material layer and the image receptor are overlaid to record a yellow monochromatic image (recording density 2.0.
As a result of 9), cyan color mixing did not occur at all in the yellow image. Further, even when the above-mentioned C color material layer coating material and Y color material layer coating material were reused after 10 days to prepare a transfer body, good characteristics were obtained in the same manner as above.

Example 2 Image Receptor: The image receptor of Example 1. Transfer member: of Example 1 on the anchor coat layer of a polyimide film (width 120 mm, thickness about 4 μm) having an anchor coat layer (thickness about 0.1 μm) made of urethane resin on the upper surface. Using C color material layer coating material and Y color material layer coating material, apply both color material layers in a microgravure coater such that both color material layers are repeated face-sequentially, and after coating, transfer by hot air drying at 100 ° C. A body was prepared (length of each color material layer: about 160 mm, C
Length of non-coated part between Y color material layers: about 10 mm, coating length:
About 100m). The film thickness of both color material layers is 0.8 μm.

After slitting this transfer member to a width of 98 mm, as in Example 1, 1 was placed in a constant temperature and humidity chamber at 50 ° C. and 60% RH.
After storage for 0 days, the C color material layer of the transfer body and the image receiving body of Example 1 were superposed and recording was performed under the same recording conditions as in Example 1.

As a result, no yellow color mixture occurred in the cyan single color image (recording density 2.14), and no cyan color mixture occurred in the yellow single color image (recording density 2.23). It was

(Examples 3 to 7) Image receptor: the image receptor of Example 1. Polysiloxane-polyoxyalkylene block copolymerization in the C color material layer coating material and the Y color material layer coating material of the example 1 on the anchor coat layer of the PET film with the slip heat resistant layer (prepared in the example 1) Only the combination (symbol F1 in Table 1) is the symbol F in Table 1.
A C color material layer coating material and a Y color material layer coating material changed to 2 were applied in the same manner as in Example 1 to prepare a transfer member, and in the same manner as in Example 1, a constant temperature and constant humidity of 50 ° C. and 60% RH. It was stored in a tank for 10 days, and a storage test of the transfer body was conducted. As a result, similar to Example 1, no color mixture occurred in each of the C and Y single color images (Example 3).

Similarly, only the polysiloxane-polyoxyalkylene block copolymer (symbol F1 in Table 1) in the C color material layer coating material and the Y color material layer coating material of Example 1 is represented by the symbol F in Table 1.
3 to F4 or F5 to F6 in Table 2 to substitute each polysiloxane-polyoxyalkylene block copolymer to prepare each transfer body, and the F3 copolymer in the C color material layer and the Y color material layer. Each of the transfer bodies containing the same, a transfer body containing an F4 copolymer, a transfer body containing an F5 copolymer, and a transfer body containing an F6 copolymer is also examined. As a result, even when each of the polysiloxane-polyoxyalkylene block copolymers of F3 to F6 was used, as in Example 1, no color mixing occurred in each of the C and Y single color images, and good results were obtained. (Examples 4 to 7).

Example 8 Image Receptor: The image receptor of Example 1. A transfer member was prepared by applying the following C color material layer coating material and Y color material layer coating material on the anchor coat layer of the PET film with the slip heat resistant layer prepared in Example 1 in the same manner as in Example 1. Is made,
As in Example 1, the transfer tester was stored in a thermo-hygrostat at 50 ° C. and 60% RH for 10 days to carry out a storage test of the transfer body. As a result, a C monochromatic image (recording density 1.7
No color mixing occurred in both 1) and Y single color images (recording density 2.10). (C color material layer coating material) Acrylonitrile-styrene copolymer (AS-S) 8 parts by weight Dye (symbol P3 in Table 3) 6 parts by weight Polysiloxane-polyoxyalkylene block copolymer 0.2 parts by weight (Table 2) No. F6) 2-butanone 50 parts by weight Toluene 50 parts by weight (Y color material layer paint) Acrylonitrile-styrene copolymer (AS-S) 8 parts by weight Dye (symbol Y1 in Table 4) 4 parts by weight Polysiloxane-poly Oxyalkylene block copolymer 0.2 parts by weight (symbol F6 in Table 2) 2-butanone 50 parts by weight Toluene 50 parts by weight

Example 9 Image Receptor: The image receptor of Example 1. On the anchor coat layer of the PET film with the slip heat resistant layer prepared in Example 1, only the cyan dye (symbol P3 in Table 3) in the C color material layer coating composition of Example 8 was replaced with the cyan dye (see Table 3). The C color material layer coating material changed to the symbol P4) and the Y color material layer coating material of Example 8 were applied in the same manner as in Example 1 to prepare a transfer member. It was stored for 10 days in a thermo-hygrostat of% RH, and the transfer test was conducted. As a result, a C monochromatic image (recording density 1.8) was obtained as in Example 1.
2), no color mixture occurred in the Y single color image (recording density 2.10).

Example 10 Image Receptor: The image receptor of Example 1. On the anchor coat layer of the PET film with the slip heat resistant layer prepared in Example 1, only the cyan dye (symbol P3 in Table 3) in the C color material layer coating composition of Example 8 was replaced with the cyan dye (see Table 3). The C color material layer coating material changed to the symbol P5) and the Y color material layer coating material of Example 8 were applied in the same manner as in Example 1 to prepare a transfer member. It was stored for 10 days in a thermo-hygrostat of% RH, and the transfer test was conducted. As a result, a C monochromatic image (recording density 1.7
9), no color mixture occurred in the Y single color image (recording density 2.11).

(Example 11) The following C color material layer coating material was applied on the anchor coat layer of the PET film with a slip heat resistant layer prepared in Example 1 using a microgravure coater. After coating, it was dried with hot air at 100 ° C. to prepare a transfer body (coating length: about 20 m). The thickness of the color material layer is about 0.9 μm. (C color material layer coating material) Acrylonitrile-styrene copolymer (AS-S) 7 parts by weight Vinyl chloride-vinyl acetate copolymer 1 part by weight (S-REC C, Sekisui Chemical Co., Ltd.) Dye (symbol P1 in Table 3) 5.6 parts by weight 2-butanone 50 parts by weight Toluene 50 parts by weight

Next, the following dyeing layer coating material was coated on the anchor coat layer of the white PET film of Example 1 with a microgravure coater and dried with hot air at 100 ° C. to give a dyeing layer (thickness). S: about 3 μm) to form an image receptor. (Dyeing layer coating material) Polyvinyl butyral resin (BL-3) 10 parts by weight Polysiloxane-polyoxyalkylene block copolymer 0.5 parts by weight (Symbol F1 in Table 1) 2-butanone 50 parts by weight Toluene 30 Parts by weight

Recording was carried out under the same recording conditions as in Example 1 by superposing the transfer member and the image receiving member prepared above, sandwiching both of them between the thermal head and the platen. After recording, the transfer body was easily peeled off from the image receiving body, and heat fusion did not occur at all between the transfer body and the image receiving body. Next, the image receptor having this cyan recorded image (recording density 2.05) was heated at 50 ° C. for 6 hours.
Stored in a 0% RH constant temperature and humidity chamber for 10 days and then removed.
As a result of rubbing the same portion of the boundary between the recorded portion and the unrecorded portion of the image three times with the index finger washed with ethanol, the unrecorded portion was not colored by the dye in the recorded portion, and the dye fixability was good. . Also, when the above-mentioned dyeing layer coating material was reused after 10 days to prepare an image receptor, good characteristics were obtained in the same manner as above.

(Examples 12 to 15) Transfer body: The transfer body of Example 11. Receptor: white PET film anchor coat of Example 1
Polysiloxane in the dyeing layer coating composition of Example 11 on the coating layer
Polyoxyalkylene block copolymer (symbol F in Table 1
A dyeing layer coating composition in which only 1) was changed to (symbol F2 in Table 1) was applied in the same manner as in Example 11 to prepare an image receptor. Similarly, each dye in which only the polysiloxane-polyoxyalkylene block copolymer (symbol F1 in Table 1) in the dyeing layer coating material of Example 11 was changed to the symbols F3 and F4 in Table 1 or the symbol F5 in Table 2 was used. Layer coatings (ie, 3 types of each of F3 to F5 dyeing layer coatings)
Was coated in the same manner as in Example 11 to prepare an image receptor.

The four types of image receivers produced in the same manner as in Example 11 were evaluated for heat fusion and finger touch after storage (the density of the recorded image of each of the four types of image receivers was 2.
(Range of 04 to 2.06) As a result, as in Example 11, each of the four types of image receivers was good for any evaluation.

(Example 16) Transfer member: The transfer member of Example 11. Receptor: white PET film anchor coat of Example 1
Polysiloxane in the dyeing layer coating composition of Example 11 on the coating layer
Polyoxyalkylene block copolymer (symbol F in Table 1
A dyeing layer coating composition in which only 1) was changed to (symbol F6 in Table 2) was applied in the same manner as in Example 11 to prepare an image receptor. The heat fusion evaluation and the finger touch evaluation after storage were performed in the same manner as in Example 11 (recorded image density, 2.04). As a result, all evaluations were good.

(Examples 17 to 20) Image receptor: Image receptor of Example 16. Transfer material: each C color material layer paint (that is, P2 dye-containing color material layer paint) in which only the cyan dye (symbol P1 in Table 3) in the C color material layer paint of Example 11 was changed to the symbols P2 to P5 in Table 3. , P3 dye-containing colorant layer paint, the same applies hereinafter), and
In the same manner as in 1, each transfer member was prepared in which only the dye in each color material layer was different (coating length: about 20 m each). The color material layers each have a thickness of about 0.9 μm.

Using this image receptor and each of these four types of transfer bodies, thermal fusion evaluation and finger touch evaluation after storage were carried out in the same manner as in Example 11. As a result, thermal fusion did not occur on any of the transfer bodies having the P2 dye in the color material layer to the transfer bodies having the P5 dye in the color material layer. Further, each cyan dye image of P2 to P5 (recording density of each dye, P2:
1.84, P3: 1.69, P4: 1.80, P5:
The finger touch evaluation for 1.78) was also good as in Example 11.

(Example 21) Image receptor: The image receptor of Example 16. Transfer body: The following M color material layer coating material (abbreviation of magenta color material layer coating material) was used on the anchor coating layer of the PET film with the slip heat resistant layer prepared in Example 1, and a microgravure coat was used.
The coating material was coated with a tape and dried with hot air at 100 ° C. to prepare a transfer body (coating length: about 20 m). The thickness of the color material layer is about 0.
It is 9 μm. (M color material layer coating material) Acrylonitrile-styrene copolymer (AS-S) 7 parts by weight Vinyl chloride-vinyl acetate copolymer (Eslec C) 1 part by weight Dye (symbol M1 in Table 4) 6 parts by weight 2-butanone 50 parts by weight Toluene 50 parts by weight

Recording and evaluation were performed in the same manner as in Example 11 using the image receptor and the transfer body. As a result, heat fusion did not occur at all between the transfer body and the image receiving body. Also, an image receptor having a magenta image (recording density of 2.0) is set at 50 ° C. and 60%.
After being stored in a thermo-hygrostat of RH for 10 days, it was taken out, and even when the same part of the image was rubbed three times with an index finger washed with ethanol, the unrecorded part was not colored by the dye in the recorded part.

Example 22 Transfer Body: The transfer body of Example 11. Image receptor: An anchor on the upper surface of a white PET film (thickness: about 100 μm) having an isocyanate cross-linked polyester anchor coat layer (thickness: about 0.1 μm) on both upper and lower surfaces.
The coating composition for the dyeing layer having the following composition is ultrasonically dispersed on the coat layer, coated with a microgravure coater, and dried with hot air at 100 ° C. to form the dyeing layer, and then the anchor on the lower surface. -The following resin layer paint is similarly applied on the coat layer, and the dyeing layer (thickness: about 3 μm) is on the upper surface and the resin layer (thickness: about 5 μm) on the lower surface.
Was prepared. (Dyeing layer paint) Polyvinyl butyral resin (BL-3) 10 parts by weight Polysiloxane-polyoxyalkylene block copolymer 0.5 parts by weight (Symbol F1 in Table 1) Calcium carbonate 1 part by weight (Homocal D , Average particle diameter 0.07 μm, Shiraishi Industry Co., Ltd.) 2-butanone 50 parts by weight Toluene 30 parts by weight (resin layer paint) Methacrylic resin 10 parts by weight (Acrypet VH, Mitsubishi Rayon Co., Ltd.) Polysiloxane-polyoxyalkylene block Copolymer 0.5 parts by weight (symbol F1 in Table 1) Acetone 40 parts by weight Toluene 20 parts by weight

The transfer body prepared in Example 11 and the image receiving body were superposed on each other, and both were sandwiched between the thermal head and the platen, and recording was carried out under the same recording conditions as in Example 1 to obtain a dyeing layer. An image receptor on which a cyan image (recording density 2.02) was recorded was obtained. In the same manner, two more image receivers on which a cyan image was recorded were prepared. The three image receivers are superposed with the image surface of each image receiver facing up, and the thickness is about 5 m.
3 image receivers are sandwiched between m glass plates, a 500 g weight is placed on the upper glass plate, and the image receivers are held under load conditions.
The sample was stored in a thermo-hygrostat at 50 ° C. and 60% RH for 10 days and then taken out. As a result, no cyan dye transfer from the dyeing layer to the resin layer on the lower surface of the image receptor was visually observed. Further, the smoothness between the image receivers required for automatic paper feeding of the printer was good. Also, when the above-mentioned resin layer paint was reused after 10 days to prepare an image receptor, good characteristics were obtained as in the above case.

(Examples 23 to 27) Transfer body: The transfer body of Example 11. Receptor: Only the polysiloxane-polyoxyalkylene block copolymer (symbol F1 in Table 1) in the dyeing layer paint and resin layer paint of Example 22 (symbol F2 in Table 1)
Example 2 using the dyeing layer paint and resin layer paint changed to
In the same manner as in 2, an image receptor having a dyeing layer (thickness: about 3 μm) on the upper surface and a resin layer (thickness: about 5 μm) on the lower surface was produced. Similarly, only the polysiloxane-polyoxyalkylene block copolymers (symbol F1 in Table 1) in the dyeing layer coating material and resin layer coating material of Example 22 are all represented by the symbols F3, F4 and Table 1 in Table 1. Each dyeing layer paint (that is, four kinds of dyeing layer paints of F3 to F6) and each resin layer paint (also four kinds of resin layer paints of F3 to F6) which are changed to the symbol F5 or F6 of 2 are used. In the same manner as in Example 22, four types of image receivers each having a dyeing layer (thickness: about 3 μm) on the upper surface and a resin layer (thickness: about 5 μm) on the lower surface were prepared.

Using the transfer member of Example 11, recording images were formed on each of the five types of image receivers in the same manner as in Example 22 (recorded image density, 2.00 to 2.03 for each), and a storage test was conducted. As a result, no cyan dye transfer from the dyeing layer to the resin layer on the lower surface of any of the image receivers was visually observed, and the smoothness between the image receivers was good in each image receiver. It was

Examples 28 to 31 Image Receptor: The image receptor of Example 27 (containing the symbol F6 in Table 2 as a polysiloxane-polyoxyalkylene block copolymer in the dyeing layer and the resin layer). Transfer member: Cyan dye in the C color material layer coating material of Example 11 (symbol P1 in Table 3)
A transfer member having a C color material layer was prepared in the same manner as in Example 11 using a coating material in which only the cyan dye (the symbol P2 in Table 3) was changed. Hereinafter, in the same manner, only the cyan dye (symbol P1 in Table 3), the cyan dye (symbol P3 in Table 3), the same (symbol P4 in Table 3) or the same (symbol P4 in Table 3) in the C color material layer coating material of Example 11 is used. P3, P4, and P5 paints changed to the symbol P5) of No. 3, and a transfer member having the dye of P3 in the color material layer, a transfer member having the dye of P4 in the color material layer, and P5 in the same manner as in Example 11. Three types of transfer bodies each having the dye of No. 3 in the color material layer were prepared.

Recording was carried out in the same manner as in Example 22 by combining an image receptor and a transfer body having a P2 cyan dye in the color material layer, and a recorded image of cyan dye (P2) (recording density 1.8).
Three image receivers having 0) were prepared. As a result of conducting a storage test as in Example 22, no cyan dye transfer from the dyeing layer to the resin layer on the lower surface of any image receptor was visually observed.

Similarly, a combination of an image receptor and a transfer body having a cyan dye of P3 in the color material layer (a density of a recorded image 1.
68), a combination of an image receptor and a transfer body having a cyan dye of P4 in the color material layer (a density of a recorded image is 1.76), and a combination of an image receptor and a transfer body having a cyan dye of P5 in the color material layer ( The same evaluation was performed for the density of the recorded image 1.75). As a result, no cyan dye transfer from the dyeing layer to the resin layer of the image receptor was visually observed for any of the cyan dyes. .

(Example 32) Image receptor: The image receptor of Example 27. Transfer material: the transfer material of Example 21. A combination of the image receptor and the transfer medium was used, and a recording image (recording density 1.96) was formed on the image receptor in the same manner as in Example 22 and a storage test was conducted. As a result, the resin layer of the image receptor was colored magenta from the dye layer. No dye transfer was visually observed.

Comparative Example 1 Image Receptor: The image receptor of Example 1. Transfer member: The following C color material layer coating material and Y on the anchor coat layer of the PET film with the slip heat resistant layer (prepared in Example 1)
A transfer material was prepared by applying the color material layer coating material in the same manner as in Example 1. The film thickness of both color material layers is about 0.9 μm. (C color material layer coating material) Acrylonitrile-styrene copolymer (AS-S) 8 parts by weight Dye (symbol P1 in Table 3) 5.6 parts by weight Polyether-modified silicone oil 0.2 parts by weight (L-7607) , Polyether group-containing side chain, Nippon Unica Co., Ltd. 2-butanone 50 parts by weight Toluene 50 parts by weight (Y color material layer paint) Acrylonitrile-styrene copolymer (AS-S) 8 parts by weight Dye (Table Symbol Y1) 4 parts by weight Polyether modified silicone oil (L-7607) 0.2 parts by weight 2-butanone 50 parts by weight Toluene 50 parts by weight

As in Example 1, after storage in a thermo-hygrostat at 50 ° C. and 60% RH for 10 days, the transfer member and the image receptor were overlaid and the recording evaluation was carried out in the same manner as in Example 1. As a result, a yellow single-color image (recording density 2.05) is yellowed.
No color mixture of No. occurred, but a cyan color mixture of minute spots having a maximum density of 0.38 occurred in the yellow monochrome image (recording density 2.10).

Comparative Example 2 Transfer Body: The transfer body of Example 11. Receptor: white PET film anchor coat of Example 1
The following dyeing layer paint was applied on the coating layer with a microgravure coater and dried with hot air at 100 ° C. to give a dyeing layer (thickness: about 3 μm
m) was formed to prepare an image receptor. (Dyeing layer paint) Polyvinyl butyral resin (BL-3) 10 parts by weight Polyether modified silicone oil (L-7607) 0.5 parts by weight 2-butanone 50 parts by weight Toluene 30 parts by weight Recording was carried out under the same recording conditions as in Example 1 by superposing the image receiver and sandwiching the thermal head and the platen between them. Next, the image receptor having this cyan recorded image (recording density 2.05) was stored in a thermo-hygrostat at 50 ° C. and 60% RH for 10 days, then taken out, and the same evaluation as in Example 11 was performed. Since a part of the dye was transferred to, the unrecorded part was colored with the cyan dye.

Comparative Example 3 Transfer Body: The transfer body of Example 11. Image receptor: A dyeing layer paint in which only the polyether-modified silicone oil (L-7607) in the dyeing layer paint of Comparative Example 2 is changed to an amino-modified silicone oil (KF865, Shin-Etsu Chemical Co., Ltd.) is used. A dyeing layer (thickness: about 3 μm) was formed in the same manner as in Comparative Example 2 to prepare an image receptor. Thereafter, in the same manner as in Comparative Example 2, a cyan recorded image (recording density 2.03)
After storing the image receptor having No. 3, the same evaluation as in Example 11 was carried out, and as a result, one part of the dye was transferred to the index finger, so that the unrecorded part was colored with the cyan dye.

Comparative Example 4 Transfer Body: The transfer body of Example 11. Image receptor: An anchor on the upper surface of a white PET film (thickness: about 100 μm) having an isocyanate cross-linked polyester anchor coat layer (thickness: about 0.1 μm) on both upper and lower surfaces.
The coating of the dyeing layer of Example 1 was applied on the coat layer with a microgravure coater, and then dried with hot air at 100 ° C. to form a dyeing layer, and then the anchor coat on the lower surface. The following resin layer paint is applied on the layer in the same manner, and the dyeing layer (thickness: about 3μ
m), an image receptor having a resin layer (thickness: about 5 μm) on the lower surface was prepared. (Resin layer coating material) Methacrylic resin (Acrypet VH) 10 parts by weight Polyether-modified silicone oil 0.5 parts by weight (L-7602, containing polyester group in side chain, Nippon Unica Co., Ltd.) Acetone 40 parts by weight Part Toluene 20 parts by weight Using a transfer member and an image receiving member, recording was performed in the same manner as in Example 22 to prepare three image receiving members in which a cyan image (recording density 2.02) was recorded in the dyeing layer. As a result of conducting a storage test of this recorded image in the same manner as in Example 22, the resin layer on the lower surface of the image receptor is colored slightly cyan, and the coloring density is 0.1.
It was 7.

[0074]

As described above, by using the sublimation-type thermal transfer recording transfer member and the sublimation-type thermal transfer recording image receiving member according to the inventions of claims 1 to 6 of the present application, heat fusion between the transfer member and the image receiving member is prevented. It provides excellent transfer characteristics and image transfer material for sublimation type thermal transfer recording, which has excellent characteristics, shows good storage characteristics with less dye contamination such as dye retransfer even after storage under high temperature and high humidity conditions, and can reuse paint. The excellent effect of being able to do is obtained.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of a sublimation-type thermal transfer recording transfer member according to an example of the present invention.

FIG. 2 is a schematic sectional view of a sublimation type thermal transfer recording transfer member according to an example of the present invention.

FIG. 3 is a schematic cross-sectional view of a sublimation type thermal transfer recording image receptor in an example of the present invention.

FIG. 4 is a schematic sectional view of a sublimation type thermal transfer recording image receptor in an example of the present invention.

[Explanation of symbols]

1 base material 2 color material layer 3 Lubricating heat resistant layer 4 base material 5 Dyeing layer 6 Dyeing layer 7 resin layer

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-5-162468 (JP, A) JP-A-4-359023 (JP, A) JP-A-61-262189 (JP, A) JP-A-6- 166276 (JP, A) JP 9-109563 (JP, A) JP 8-216531 (JP, A) JP 61-244589 (JP, A) JP 7-214926 (JP, A) JP-A-8-310022 (JP, A) JP-A-10-175379 (JP, A) JP-A-2-141289 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B41M 5/38-5/40 CAPLUS (STN) REGISTRY (STN)

Claims (6)

(57) [Claims] 1. A transfer body having a coloring material layer containing a dye, a binder, and a polysiloxane-polyoxyalkylene block copolymer on one surface of a substrate, wherein the polysiloxane-polyoxyalkylene block copolymer is used. The polymer has the following general formula: [In the formula, a and b are each an integer of 2 or more, and R1
Is a hydrogen atom or a monovalent hydrocarbon group, R2 is a monovalent hydrocarbon group, each R1 and each R2 may be the same or different, and n is an integer of 2 to 4, _n H _2n
-O) _b unit may have two or more (C _n H _2n -O) _b units having different n values, and at this time, b values may be the same or different. A transfer body for sublimation type thermal transfer recording having the following features. 2. The sublimation-type thermal transfer recording transfer member according to claim 1, wherein the polysiloxane-polyoxyalkylene block copolymer is represented by the general formula (Formula 2). [Chemical 2] [In the formula, a and c are integers of 2 or more, R2 is a monovalent hydrocarbon group, and each R2 may be the same or different,
R3 is a residue in which an ethylenically unsaturated group-containing monomer is saturated with H, and Y is (Chemical Formula 1) in claim 1. ] 3. The sublimation type thermal transfer recording transfer member according to claim 1, wherein the dye is an indoaniline dye. 4. An image receptor having a dyeing layer containing a dyeing resin and a polysiloxane-polyoxyalkylene block copolymer on one surface of a substrate, wherein the polysiloxane-polyoxyalkylene block copolymer is used. The combination is the following general formula: [In the formula, a and b are each an integer of 2 or more, and R1
Is a hydrogen atom or a monovalent hydrocarbon group, R2 is a monovalent hydrocarbon group, each R1 and each R2 may be the same or different, and n is an integer of 2 to 4, _n H _2n
-O) _b unit may have two or more (C _n H _2n -O) _b units having different n values, and at this time, b values may be the same or different. An image receptor for sublimation type thermal transfer recording having the following. 5. An image receiving having a dyeing layer on one surface of a substrate and a resin layer containing a polymer substance and a polysiloxane-polyoxyalkylene block copolymer on the other surface of the substrate. In the polymer, the polysiloxane-polyoxyalkylene block copolymer has the following general formula: [In the formula, a and b are each an integer of 2 or more, and R1
Is a hydrogen atom or a monovalent hydrocarbon group, R2 is a monovalent hydrocarbon group, each R1 and each R2 may be the same or different, and n is an integer of 2 to 4, _n H _2n
-O) _b unit may have two or more (C _n H _2n -O) _b units having different n values, and at this time, b values may be the same or different. An image receptor for sublimation type thermal transfer recording having the following. 6. The sublimation-type thermal transfer recording image receptor according to claim 4, wherein the polysiloxane-polyoxyalkylene block copolymer is represented by the general formula (Formula 5). [Chemical 5] [In the formula, a and c are integers of 2 or more, R2 is a monovalent hydrocarbon group, and each R2 may be the same or different,
R3 is a residue in which an ethylenically unsaturated group-containing monomer is saturated with H, and Y is (formula 3) or (formula 4) of claim 4 or 5. ]