JPH0679980A - Light and heat conversion type heat mode image receiving material and recording material - Google Patents

Abstract

PURPOSE:To make it possible to firmly adhere image receiving material and recording material uniformly in a short time in a small space with a device low in cost and prevent trouble which occurs at conveying by setting surface roughness or waviness of an image receiving face to a specified value with a light and heat conversion type heat mode image receiving material. CONSTITUTION:A value Ra of an ink layer of a recording material 3 or a surface roughness of an image receiving material 4 is 0.4-0.01, but 0.3-0.05 is desirable. When the value Ra exceeds 0.4, adhesive property deteriorates, transfer sensitivity lowers, dot reproducibility of transfer image deteriorates, and color turbidity occurs. Making it below 0.01 is difficult from the viewpoint of production and fog due to pressure transfer will easily occur. On the other hand, the waviness of the surface (irregularity on the surface observed at an interval of 0.1.-several mm) is 2mum or less. It may be larger comparing with the surface roughness. However, when it becomes 2mum or more, the adhesive property deteriorates as well, although it depends on rigidity of the image receiving material 4 and the recording material 3. When vacuum adhesion is to be performed, degree of adhesion changes dependently on pressure-reducing time. The shorter the pressure-reducing time is, the more preferable it is.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image receiving material and a recording material used in a photothermal conversion type heat mode recording method, and more particularly to a photothermal converting type heat mode image receiving material and a recording material suitable for a laser scanning system.

[0002]

2. Description of the Related Art In thermal transfer recording, close contact between a recording material and an image receiving material is essential for the transfer process. In thermal transfer recording using a normal thermal head, the recording material and the image receiving material are pressed by pressing the thermal head against a platen roller. Adhesion of materials is achieved.

In heat mode thermal transfer recording using light from a laser or the like, there is a demand for simplifying the optical system to reduce the optical system loss in order to reduce the energy loss as much as possible.

Further, it is conceivable to use cylindrical scanning in order to increase the scanning speed, but in cylindrical scanning, since the drum around which the recording material and the image receiving material are wound is rotated at high speed, it is difficult to adopt the contact type contact method.

Further, it is conceivable that the recording material and the image receiving material are adhered to each other by using a transparent cover sheet, but in this method, as the size of the material sheet is increased, the adhesion unevenness is more likely to occur, and the cover is covered. The use of the sheet complicates the automatic transport mechanism for the recording material and the image receiving material, which causes problems such as an increase in size of the apparatus and an increase in cost.

Therefore, there is a demand for the development of an effective contact method for a recording material and an image receiving material in heat mode thermal transfer recording which is non-contact and has a small optical system loss.

[0007]

SUMMARY OF THE INVENTION An object of the present invention relates to a photothermal conversion type heat mode recording, which enables a uniform contact between an image receiving material and a recording material in a short time with a small space and a low cost device, and has no troubles during transportation. A type heat mode image receiving material and a recording material are provided.

[0008]

The inventors of the present invention have found that the adhesion between the recording material and the image receiving material is greatly influenced by the surface physical properties of both materials, and as a result of earnest studies, they have found that the above problems can be improved. Came to do.

That is, the above object of the present invention is achieved by the following constitutions.

(1) A photothermal conversion heat mode recording method for recording by irradiating light according to image information in a state where the surface of the recording material having the ink layer and the image receiving surface of the image receiving material are in close contact or arranged in the vicinity. In the light-heat conversion type heat mode image receiving material used for, the surface roughness of the image receiving surface has an Ra value of 0.4 to 0.
A photothermal conversion type heat mode image receiving material having 01 or waviness of 2 μm or less.

(2) A photothermal conversion heat mode recording method in which recording is performed by irradiating light according to image information in a state where the surface of the recording material having the ink layer and the image receiving surface of the image receiving material are in close contact with each other or arranged in the vicinity thereof. In the photothermal conversion type heat mode image receiving material used for, the smoother value of the image receiving surface is 23 ° C.
Photothermal conversion type heat mode image receiving material with 5 to 20 mmHg at 55% RH.

(3) The surface resistance of the image receiving surface is 10 at 23 ° C / 55% RH.
The heat mode image receiving material according to (1) or (2), which has a resistance of ⁹ Ω or less.

(4) A photothermal conversion heat mode recording method for recording by irradiating light according to image information in a state where the surface of the recording material having the ink layer and the image receiving surface of the image receiving material are in close contact or arranged in the vicinity thereof. The heat-mode recording material used in, wherein the surface roughness of the ink layer is Ra value 0.4 to 0.01 or the waviness is 2 μm or less.

(5) A photothermal conversion heat mode recording method in which recording is performed by irradiating light according to image information in a state in which the surface having the ink layer of the recording material and the image receiving surface of the image receiving material are in close contact or arranged in the vicinity. In the photothermal conversion heat mode recording material used for the ink, the ink layer has a smoother value of 23 ° C.
-Photothermal conversion type heat mode recording material that is 5 to 20 mmHg at 55% RH.

(6) The surface resistance of the ink layer is 23 ° C / 55% RH
The photothermal conversion type heat mode thermal transfer recording material according to (4) or (5), which has a resistance of 10 ⁹ Ω or less.

(7) The photothermal property according to any one of (1) to (6), wherein the coefficient of static friction between the image receiving surface of the photothermal conversion heat mode image receiving material and the ink surface of the photothermal conversion heat mode recording material is 0.2 or less. Conversion type heat mode image receiving material and photothermal conversion type heat mode recording material.

Further, the recording method having the following constitution is a preferred embodiment for exerting the effect of the present invention.

(8) The image receiving surface of the photothermal conversion type heat mode image receiving material and the ink surface of the photothermal converting type heat mode recording material having a longitudinal and lateral dimension larger than that of the image receiving material are superposed on a pressure reducer having micropores, and the image receiving material is A heat-heat conversion type heat mode recording method in which the recording material and the image receiving material are brought into close contact with each other by decompressing through the minute holes from the recording material portion protruding from the periphery of the recording material, and then light is irradiated from the recording material side.

(9) The ink surface of the photothermal conversion type heat mode recording material and the image receiving surface of the photothermal conversion type heat mode image receiving material having a larger vertical and horizontal dimension than the recording material are superposed on a pressure reducer having micropores, and the recording material is formed. A photothermal conversion heat mode recording method in which the recording material and the image receiving material are brought into close contact with each other by reducing the pressure through the minute holes from the portion of the image receiving material protruding from the periphery of the image receiving material, and then light is irradiated from the image receiving material side.

(10) The photothermal conversion heat mode recording method according to (8) or (9), wherein the decompressor is a flat plate.

(11) The pressure reducer is drum-shaped (8) or (9)
The light-heat conversion type heat mode recording method described.

The photothermal conversion type heat mode recording method will be described below with reference to the drawings. The photothermal conversion type heat mode image receiving material is referred to as "heat mode image receiving material" or simply "image receiving material".
Further, the light-heat conversion type heat mode recording material is also referred to as "heat mode recording material" or simply "recording material".

As a contacting method, as shown in FIG. 1, the image receiving layer surface of the image receiving material and the ink surface of the recording material having a vertical and horizontal dimension larger than that of the image receiving material are superposed on a pressure reducer having fine holes, and the periphery of the image receiving material is overlapped. The image receiving material and the recording material are brought into close contact with each other by decompressing through the minute holes from the portion of the recording material that is more protruding, and conversely, the ink surface of the recording material and the image receiving surface of the image receiving material having a vertical and horizontal dimension larger than that of the recording material are superposed. It is also possible to bring the image receiving material and the recording material into close contact with each other by reducing the pressure through the minute holes from the image receiving material portion protruding from the periphery of the recording material.

According to this contact method, it is easy to automate the transportation and winding of the recording material and the image receiving material, and heat mode recording becomes possible by irradiating light after completion of contact. The decompressor may be drum-shaped as shown in FIG. 2, or may be a flat plate as shown in FIG. 3, but when high-speed recording is required, a flat plate decompressor and a polygon mirror or a galvano mirror are used. Cylindrical scanning using a drum-shaped decompressor requires less optical system loss than planar scanning by.

Recording information is recorded in such a state that the ink surface of the recording material and the image receiving surface of the image receiving material are completely in contact with each other or arranged in the immediate vicinity thereof (hereinafter, this state is referred to as an intimate contact state) by using such a decompressor. Thermal transfer recording is performed by irradiating light according to the above.

The present invention will be described in more detail below.

FIG. 4 shows the pressure reducer and the periphery of the pressure reducer in the present invention. Here, the case where the pressure reducer is in the form of a drum is illustrated, but the basic configuration is the same in the case of a flat plate. For example, when the recording material and the image receiving material having the structure shown in FIG. 5 are wrapped around the decompressor and brought into close contact with each other, first, the image receiving material is depressurized with the decompression hole valve closed and wrapped and fixed. Next, the recording material is wound, and at this time, the pressure reducing holes are sequentially opened. This makes it easier to shorten the decompression time and obtain a close contact state. It is more effective to open the pressure reducing valve while pressing it with the squeeze roller.

The surface roughness of the ink layer of the recording material and / or the image receiving material is 0.4 to 0.01 as Ra value, but 0.3 to 0.05.
Is more preferable. If Ra exceeds 0.4, the adhesion will deteriorate,
The transfer sensitivity is lowered, the dot reproducibility of the transferred image is deteriorated, and color turbidity occurs. If it is less than 0.01, it is difficult to produce, and fogging due to pressure transfer is likely to occur.

On the other hand, the surface waviness (surface irregularities observed at intervals of 0.1 to several mm) is 2 μm or less, which may be larger than the surface roughness, but when it is 2 μm or more, the image receiving material and the recording material. It depends on the rigidity of, but it deteriorates the adhesiveness.

In the case of contacting under reduced pressure, the degree of contact varies depending on the time during which the pressure is reduced, but the shorter the pressure reducing time is, the more preferable. The smooster value is often used as an index for measuring the decompression time required for adhesion, and it is often used in a silver salt sensitive material. The larger the smooster value, the shorter the adhesion time. The smoother value of the image receiving material and / or the recording material in the present invention is 23 ° C / 55% RH.
5 to 20 mmHg, but if it is 5 mmHg or less, the time required for adhesion is long, and if it is 20 mmHg or more, the adhesion time is short, but the adhesion is deteriorated and the transfer sensitivity is lowered.

In order to shorten the contact time by vacuum contact,
Further, the pressure is reduced while pressing with a squeeze roll, and at this time, it is preferable that the image receiving material and the recording material have good slipperiness. That is, the coefficient of static friction between the image receiving material and the recording material is 0.
It is preferably 2 or less, and when it exceeds 0.2, the adhesion time becomes long and at the same time wrinkles are generated on the material surface, which prevents uniform adhesion.

By lowering the surface resistance of the image receiving material and the recording material, it is possible to reduce transport troubles when transporting the image receiving material and the recording material to the decompressor, and reduce dust adhesion in the transport process. The surface resistance changes greatly depending on the temperature and humidity, but in the heat mode thermal transfer recording device, it is easy to get low humidity,
Therefore, it is desirable to keep the surface resistance at 23 ° C / 55% RH to 10 ⁹ Ω or less.

Next, the recording material and the image receiving material used in the present invention will be described.

The recording material basically has a structure in which a heat-fusible ink layer is laminated on a support, and also has a function of converting light irradiated imagewise into heat. If necessary, an intermediate layer (release layer, barrier layer, cushion layer, etc.) may be provided between the support and the ink layer.

The heat-fusible ink layer means an ink layer which is melted or softened when heated and is transferable for each layer containing a coloring material and a binder, and does not need to be transferred in a completely melted state. .

Examples of the coloring material include pigments such as inorganic pigments and organic pigments, and dyes.

Examples of the inorganic pigments include titanium dioxide, carbon black, zinc oxide, Prussian blue, cadmium sulfide, iron oxide and chromates of lead, zinc, barium and calcium.

The organic pigments include azo-based, thioindigo-based, anthraquinone-based, anthanthrone-based, triphendioxazine-based pigments, vat dye pigments, phthalocyanine pigments (eg copper phthalocyanine) and their derivatives,
Examples include quinacridone pigment. Examples of organic dyes include acid dyes, direct dyes, disperse dyes, oil-soluble dyes, metal-containing oil-soluble dyes and sublimable dyes.

When the formed image is used as a color proof, color materials equivalent to those used in printing inks such as Rionol Blue FG-7330, Rionol Yellow No. 1206, No. 1406G and Rionol are used. Red 6BFG-4
Pigments such as 219X (both manufactured by Toyo Ink Co., Ltd.) can be used.

The content of the coloring material in the ink layer is not particularly limited, but is usually in the range of 5 to 70% by weight, preferably 10 to 60% by weight.

Examples of the binder for the ink layer include a heat-melting substance, a heat-softening substance and a thermoplastic resin. The heat-meltable substance is usually a solid or semi-solid substance having a melting point in the range of 40 to 150 ° C. measured using Yanagimoto MJP-2 type. Concretely, vegetable waxes such as carnauba wax and wood wax; animal waxes such as beeswax and shellac wax; petroleum waxes such as paraffin wax, microcrystal wax, polyethylene wax, ester wax, acid wax; and montan wax, ozokerite, ceresin. Other examples of the waxes include mineral waxes, and in addition to these waxes, higher fatty acids such as palmitic acid, stearic acid, and behenic acid; palmityl alcohol, stearyl alcohol, behenyl alcohol, marganyl alcohol, etc. Higher alcohols; higher fatty acid esters such as cetyl palmitate, myricyl palmitate, cetyl stearate, myricyl stearate; amides such as acetamide, propionamide, palmitamide, stearamide, amide wax; Teariruamin,
Examples thereof include higher amines such as behenylamine and palmitylamine.

Further, as the thermoplastic resin, an ethylene copolymer, a polyamide resin, a polystyrene resin, a polyester resin, a polyurethane resin, a polyolefin resin, an acrylic resin, a vinyl chloride resin, a cellulose resin, Rosin resin, polyvinyl alcohol resin, polyvinyl acetal resin, ionomer resin,
Resins such as petroleum-based resins; elastomers such as natural rubber, styrene-butadiene rubber, isoprene rubber, chloroprene rubber, and diene-based copolymers; rosin derivatives such as ester gum, rosin maleic acid resin, rosin phenol resin, and hydrogenated rosin; Phenolic resin, terpene resin,
Examples thereof include polymer compounds such as cyclopentadiene resin and aromatic hydrocarbon resins.

The thermal transfer layer having a desired thermal softening point or thermal melting point can be formed by appropriately selecting the above-mentioned heat-melting substance and thermoplastic substance.

The function of converting light radiated imagewise into heat is, for example, by including a photothermal conversion material in the ink layer or by providing a photothermal conversion layer containing the photothermal conversion material adjacent to the ink layer. Can be realized by

When the photothermal conversion material is contained in the ink layer,
Any conventionally known photothermal conversion material can be used. In a preferred embodiment of the present invention, heat is generated by irradiation with a semiconductor laser light, and therefore, 700 is used when forming a color image.
A near-infrared light absorber having an absorption maximum in the wavelength band of up to 3000 nm and having little or no absorption in the visible region is preferable. When forming a monochrome image, carbon black or the like having absorption in the visible to near infrared region is preferable.

As the near-infrared light absorbing agent, cyanine-based, polymethine-based, azurenium-based, squalium-based, thiopyrylium-based, naphthoquinone-based, anthraquinone-based organic compounds such as dyes, phthalocyanine-based, azo-based, thioamide-based organometallic complexes Are preferably used, specifically, JP-A-63-139191, JP-A- 64-33547, JP-A 1-160683,
1-280750, 1-293342, 2-2074, 3-26593
No. 3, No. 3-30991, No. 3-34891, No. 3-36093, No. 3-360
No. 94, No. 3-36095, No. 3-42281, No. 3-97589, No. 3-1
Examples thereof include compounds described in No. 03476.

When the photothermal conversion layer containing the photothermal conversion material is provided as a layer different from the ink layer, the above-mentioned photothermal conversion material can be used as it is.

As the binder in the photothermal conversion layer,
Resins with high glass transition temperature and high thermal conductivity, such as polymethylmethacrylate, polycarbonate, polystyrene,
A general heat resistant resin such as ethyl cellulose, nitrocellulose, polyvinyl alcohol, gelatin, polyvinylpyrrolidone, polyparabanic acid, polyvinyl chloride, polyamide, polyimide, polyetherimide, polysulfone, polyethersulfone, or aramid can be used.

The thickness of the photothermal conversion layer is preferably 0.1 to 3 μm, and the content of the photothermal conversion material in the photothermal conversion layer is usually such that the absorbance at the wavelength of the light source used for image recording is 0.3 to 3.0.
You can decide to become.

In addition to the above, the light-heat conversion layer can also be formed as a vapor deposition film of carbon black, aluminum or the like. The photothermal conversion material may be the color material itself of the ink layer, and is not limited to the above, and various substances can be used.

The cushion layer of the recording material is provided for the purpose of increasing the adhesion between the recording material and the image receiving material, but the support itself may be provided with cushioning properties.

To provide the cushioning property, a material having a low elastic modulus or a material having rubber elasticity may be used. Specifically, natural rubber, acrylate rubber, butyl rubber, nitrile rubber, butadiene rubber, isoprene rubber, styrene-butadiene rubber, chloroprene rubber, urethane rubber, silicone rubber, acrylic rubber, fluorine rubber, neoprene rubber, chlorosulfonated polyethylene,
Epichlorohydrin, EPDM (ethylene / propylene / diene rubber), elastomers such as urethane elastomers, polyethylene, polypropylene, polybutadiene,
Polybutene, polyurethane, acetate, cellulose acetate, amide resin, polytetrafluoroethylene,
Polyester, impact-resistant acrylic resin, styrene-butadiene copolymer, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene copolymer, vinyl chloride-vinyl acetate copolymer, polyvinyl acetate, vinyl chloride resin with plasticizer, Among vinylidene chloride resins, polyvinyl chloride, polyvinylidene chloride and the like, resins having a low elastic modulus can be mentioned.

Examples of the shape memory resin that can be used as the cushion layer include polynorbornene and a styrene-based hybrid polymer in which a polybutadiene unit and a polystyrene unit are compounded.

The thickness of the cushion layer depends on various factors such as the type of resin or elastomer used, the suction force when the recording material-image-receiving sheet adheres, the particle size of the matting material, and the amount of the matting material used. No, but usually 10 ~
It is in the range of 100 μm.

As a method for forming the cushion layer, a material obtained by dissolving the above materials in a solvent or dispersing them in a latex form is applied by a blade coater, a roll coater, a bar coater, a curtain coater, a gravure coater or the like, and extrusion lamination by hot melt. And a method of laminating a cushion layer film can be applied.

Any support may be used as long as it has good dimensional stability and withstands heat during image formation. Specifically, it is described in JP-A-63-193886, page 2, lower left column, lines 12-18. Films or sheets can be used. Further, when the laser light is irradiated from the recording material side to form an image, the support of the recording material is preferably transparent. The support of the recording material need not be transparent as long as laser light is applied from the image receiving material side to form an image. The thickness of the support is not particularly limited, but is usually 2 to 300 μm, preferably 5 to 200 μm.

The antistatic layer can have the same structure for both the recording material and the image receiving material, and may be provided as an intermediate layer such as a backcoat layer undercoating layer, an ink layer undercoating layer and an image receiving layer undercoating layer. Alternatively, an antistatic agent may be added to a layer on the surface of the image receiving layer, the ink layer, the back coat layer, or the like. These layers can be antistatic by being provided on one surface of the support, and are also preferably provided on both surfaces of the support.

The thickness of the antistatic layer is 0 when formed independently.
It can be provided in a thickness of 5 to 3 μm, and when an antistatic agent is added to the image receiving layer, the photothermal conversion layer, the ink layer, etc., it may be formed in a film thickness required for each layer.

Examples of the antistatic agent include nonionic surfactants such as polyoxyethylene alkylamine and glycerin fatty acid ester, cationic surfactants such as quaternary ammonium salt, anionic surfactants such as alkyl phosphate, and the like. The compounds described in "Chemical products of 11290" such as amphoteric surfactants and conductive resins described on pages 875 to 876 of Kagaku Kogyo Nippo Co. can be used.

Also, conductive fine particles can be used, for example, ZnO, TiO ₂ , SnO ₂ , Al ₂ O ₃ , In ₂ O ₃ , MgO, BaO, CoO, CuO, Cu.
₂ O, CaO, SrO, BaO ₂ , PbO, PbO ₂ , MnO ₃ , SiO ₂ , ZrO ₂ , Ag ₂ O, Y ₂ O ₃ ,
Bi ₂ O ₃ , Ti ₂ O ₃ , Sb ₂ O ₃ , Sb ₂ O ₅ , K ₂ Ti ₆ O ₁₃ , NaCaP ₂ O ₁₈ , MgB ₂ O ₅
Oxides such as CuS, ZnS and other sulfides, SiC, TiC, ZrC, VC, NbC,
Carbide such as MoC, WC, nitride such as Si ₃ N ₄ , TiN, ZrN, VN, NbN, TaN, Cr ₂ N, TiB ₂ , ZrB ₂ , NbB ₂ , TaB ₂ , CrB, MoB, WB, LaB ₅ borides _{etc., TiSi 2, ZrSi 2, NbSi} 2, TaSi 2, CrSi 2, MoSi 2, WSi 2
Silicide _{etc., BaCO 3, CaCO 3, SrCO} 3, BaSO 4, metal salts of CaSO ₄ and the _{like, SiN 4 -SiC, 9Ai 2 O} 3 -2B 2 O 3 or the like complexes of, and these one kind You may use individually or in combination of 2 or more types.

The amount of the antistatic agent added to the antistatic layer varies depending on whether the antistatic layer is a single layer or an antistatic agent is added to another layer, but it is 5 to 80% by weight based on the total amount.
Is preferred, and 10 to 60% by weight is more preferred.

Next, the image receiving material will be described.

The image receiving material forms an image by receiving the ink layer peeled imagewise from the recording material. Usually, the image receiving material has a support and an image receiving layer, and may be formed of only the support.

Since the ink layer melted by heat is transferred to the image receiving material, it is desirable that it has appropriate heat resistance and excellent dimensional stability so that an image is properly formed.

The image-receiving layer formed on the surface of the support is composed of a binder and various additives and mat materials which are added as required. Further, in some cases, it is formed only by the binder. As the image-receiving layer binder having good transferability, polyvinyl acetate emulsion adhesive, chloroprene adhesive,
Adhesives such as epoxy resin-based adhesives, natural rubber, chloroprene rubber-based, butyl rubber-based, polyacrylic ester-based, nitrile rubber-based, silicon rubber-based, rosin-based, petroleum-based resin adhesives, etc., recycled rubber, ionomer resin , S
Examples thereof include BR, polysulfide type, polybutadiene type, ethylene-vinyl acetate type resin, polyisoprene, vinyl chloride type resin, polyvinyl ether and the like.

When the image formed on the image receiving layer is retransferred to another recording medium by further heating and / or pressing, a resin having a relatively small polarity (small SP value) is used as the image receiving layer. Is particularly preferable. Examples thereof include polyethylene, polypropylene, ethylene-vinyl chloride copolymer, ethylene-acrylic copolymer, vinyl chloride resin, and various modified olefins.

The film thickness of the image receiving layer is usually 10 to 100 μm, but it is not limited to this when the cushion layer is used as the image receiving layer. The cushion layer described in the recording material can be used as the cushion layer. When retransferred to another recording medium, the film thickness is preferably 30 to 50 μm.

As the support of the image receiving material, the same support as described for the recording material can be used, but the thickness is 25 to 30.
The thickness is preferably 0 μm, more preferably 50 to 200 μm.

In addition, an image receiving layer subbing layer, a back coat layer, an antistatic layer and the like can be provided as required.

[0070]

The present invention will be described in detail below with reference to examples, but the embodiments of the present invention are not limited thereto.

(Preparation of recording material) 75 μm thick transparent PE
T (polyethylene terephthalate: T-100 manufactured by Diamond Foil Hoechst), a cushion layer, a photothermal conversion layer, and
A recording material was prepared by sequentially coating ink layers and the like. The method for forming each layer and the coating liquid will be described below.

<Cushion Layer> The following three forming methods were used.

Forming Method A (Waviness = 0.5 μm) A coating solution having the following composition was applied and dried using a blade coater. Thickness 30 μm.

Cushion layer forming coating solution EVA 15 parts (VA content 28%, Mitsui DuPont Chemical Co .: EV250) Toluene 85 parts Forming method B (waviness = 1.2 μm) EVA (VA content 14%) is extrusion laminated. After being formed, it was smoothed with a calendar roll.

Forming method C (waviness = 2.5 μm) EVA (VA content 14%) was extrusion laminated to form.

<Light-to-heat conversion layer> A coating liquid having the following composition was applied onto the cushion layer with a wire bar and dried to obtain a layer having a dry film thickness of 0.4 μm.

Coating liquid A for forming a photothermal conversion layer A Polyvinyl alcohol (GL-05 manufactured by Nippon Synthetic Chemical Industry Co., Ltd.) 7 parts IR absorbing dye (IR-1) 3 parts Distilled water 90 parts Coating liquid B for forming a photothermal conversion layer Polyvinyl alcohol (Nippon Gosei Kagaku GL-05) 5 parts IR absorbing dye (IR-1) 3 parts Anionic polymer 2 parts (Main component sodium polystyrene sulfonate, Sanyo Kasei Co., Ltd .: Chemistad SA-9) 90 parts distilled water

[0078]

[Chemical 1]

<Ink Layer> A coating solution having the following composition was applied onto the photothermal conversion layer with a wire bar and dried.
Dry film thickness 0.5 μm.

Ink layer forming coating liquid A Styrene acrylic (manufactured by Sanyo Kasei: Hymer SBM-100) 6.4 parts Ethylene-vinyl acetate copolymer 0.5 part (Mitsui-DuPont Polychemical Co .: EV-40Y) Cyan pigment Dispersion (manufactured by Mikuni dye company) 2.5 parts 0.8 μm silicon resin fine particles 0.3 part (manufactured by Toshiba Silicone Co., Ltd .: Tospearl 108) DOP (dioctyl phthalate) 0.3 part MEK (methyl ethyl ketone) 90 parts Ink layer forming coating B styrene acrylic ( (Previous: Hymer SBM-100) 6.4 parts Ethylene-vinyl acetate copolymer (previous: EV-40Y) 0.5 parts Magenta pigment dispersion (manufactured by Mikuni dye company) 2.5 parts 0.8 μm silicone resin fine particles (previous: Tospearl 108) ) 0.3 parts DOP 0.3 parts MEK 90 parts ink layer coating solution C styrene acrylic (supra: Himer SBM-100) 6.4 parts of ethylene - vinyl acetate copolymer (supra: EV-40Y) 0.5 parts Presenter pigment dispersion (manufactured by Mikuni Color Ltd.) 0.3 parts 2.5 parts 2.0μm silicone resin particles (Toshiba Silicone Co., Ltd. Tospearl 120) DOP 0.3 parts MEK 90 parts Ink Layer Coating Solution D rosin resin (Harima Kasei Co., Ltd. : DS-90) 6.7 parts Ethylene-vinyl acetate copolymer (previously: EV-40Y) 0.5 part Magenta pigment dispersion (manufactured by Mikuni dye company) 2.5 parts DOP 0.3 part MEK 90 parts Ink layer forming coating liquid E Styrene acryl (previous: Hymer SBM-100) 6.69 parts Ethylene-vinyl acetate copolymer (previous: EV-40Y) 0.5 parts Magenta pigment dispersion (manufactured by Mikuni dye company) 2.5 parts Fluorine-based surfactant (Asahi Glass Co., Ltd.) Manufactured : Surflon S-382) 0.01 part DOP 0.3 part MEK 90 parts Ink layer forming coating liquid F Styrene acrylic (previous: Hymer SBM-100) 6.4 parts Ethylene-vinyl acetate copolymer (previous: EV-40Y) ) 0.5 part Magenta pigment dispersion (Mikuni dye company) 2 .5 parts 0.8 μm silicon resin fine particles (previous: Tospearl 108) 0.3 parts tin oxide [antimony oxide dope] 1.0 part (average particle size 0.02 μm, Mitsubishi Materials: conductive powder T-1) DOP 0.3 parts MEK 90 parts (Preparation of Image Receiving Material) The same cushion layer, image receiving layer subbing layer, image receiving layer and the like as the recording material were applied on the same PET support as the recording material.

<Image Receiving Layer> A coating liquid having the following composition was applied and dried with a wire bar. Film thickness 1.0 μm.

Image- Receiving Layer Forming Coating Liquid A EVA / VCL Graft Polymer 5.0 parts (Nippon Zeon Co .: Graftmer R3) MEK 70 parts Cyclohexanone 25 parts Image- Receiving Layer Forming Coating Liquid B EVA / VCL Graft Polymer (above: Kraftmar R3) 4.5 parts 3.5 μm silica fine particles 0.5 parts (Fuji Devison: Syloid 244) MEK 70 parts Cyclohexanone 25 parts Image- receiving layer forming coating solution C 1,2-polybutadiene 5 parts (Nippon Synthetic Rubber Co., Ltd .: RB -830) Toluene 95 parts Coating liquid for forming image receiving layer D EVA / VCL graft polymer (previous: Graftmer R3) 4.9 parts 3.5 μm silica fine particles (previous: Cyloid 244) 0.1 part MEK 70 parts Cyclohexanone 25 parts Receptor layer forming use coating liquid E EVA / VCL graft polymer (supra: Gurafutoma R3) 4.7 parts 5.0μm silica particles 0.3 parts (Fuji Davison Co., Ltd. Syloid 79) MEK 70 parts cyclohexanol Non 25 parts receiving layer coating liquid F ethylene - vinyl copolymer 9.9 parts chloride (Toyo Morton Co., Ltd. AD37P295J) Fluorine-based surfactant (manufactured by Asahi Glass Company: Surflon S-381) 0.1 parts Water 90 parts receiving layer Coating liquid for forming G EVA / VCL Graft polymer (previous: Graftmer R3) 8.0 parts Tin oxide [antimony oxide dope] (previous: conductive powder T-1) 2.0 parts MEK 65 parts Cyclohexanone 25 parts <Undercoat layer> Depending on the sample, a coating liquid having the following composition was applied to the image receiving material with a wire bar and dried to form an undercoat layer.
Dry film thickness 1.0 μm.

Coating Solution A for Forming Subbing Layer of Image Receiving Layer A : 8.0 parts of polyvinyl butyral (manufactured by Sekisui Chemical Co., Ltd .: Bx-1) tin oxide [antimony oxide dope] (previous: conductive powder T-1) 2.0 parts MEK 90 Part <Backing Layer> Depending on the sample, a coating liquid having the following composition was applied to the recording material and the image receiving material and dried to form a backing layer.

Coating liquid for forming a BC layer A Polyvinyl alcohol (previous: GL-05) 7 parts Anionic polymer (previous: Chemistad SA-9) 3 parts Distilled water 90 parts Example 1 Table on PET base A cushion layer, a photothermal conversion layer, and an ink layer shown in 1 were provided to prepare a recording material. Image receiving material is P
A cushion layer and an image-receiving layer shown in Table 1 were sequentially provided on the ET base to prepare. Table 1 shows the recording materials and image receiving materials that were created.
Heat mode transfer was performed under the following conditions with the combination shown in (1) to investigate the relationship between surface roughness, waviness and transferability.

The surface roughness and undulation were measured by using a surface roughness measuring instrument Surfcoder SEF-30D manufactured by Kosaka Laboratory Ltd., and the surface roughness was 20,000 times the longitudinal magnification and the roughness cutoff value.
The center line average roughness (Ra) was measured and determined at 0.08 mm, a standard length of 2.50 mm, and a feed rate of 0.1 mm / sec. The undulation is a vertical magnification of 20000 times, roughness cutoff value 8 mm, standard length 5.00 mm,
The maximum height (Rmax) was measured and determined at a feed rate of 0.1 mm / sec.

(Transfer conditions) An image receiving material and a recording material were wound in this order on the drum shown in FIG. 2, the inside of the drum was depressurized, and a laser beam was irradiated when the contact state between the image receiving material and the recording material became constant. It was transcribed. The recording energy was 0.3 J / cm ² .

[0087]

[Table 1]

Evaluation of Results ◯: Uniform transfer is possible over the entire surface Δ: Transfer unevenness is likely to occur and energy required for transfer is large x: Transfer unevenness does not disappear even if the energy is increased. Example 2 As shown in Table 2 Heat mode transfer was performed under the same conditions as in Example 1 using a combination of recording materials and image receiving materials having different surface smoothness, and the relationship between the smoother value and the adhesion time and transferability was investigated.

[0089]

[Table 2]

Evaluation of results * Time (seconds) until the contact state between the image receiving material and the recording material reaches a steady state visually determined. ○: No air pockets are generated and the energy required for transfer is small. No, but the energy required for transfer is large.

Example 3 Heat mode transfer was performed under the same conditions as in Example 1 by using a combination of recording materials and image receiving materials having different surface resistances as shown in Table 3 to investigate the relationship between conductivity and adhesion failure due to dust adhesion. It was

[0092]

[Table 3]

*: Evaluation of results shown in × 10 ⁹ Ω ◎: No adhesion failure due to adhesion of dust ○: Almost no adhesion failure due to adhesion of dust ×: Adhesion failure due to adhesion of dust × ×: Adhesion of dirt There are a lot of poor adhesion due to.

Example 4 Heat mode transfer was carried out under the same conditions as in Example 1 by using a combination of the recording material and the image receiving material having different friction coefficients as shown in Table 4, and the relationship between the friction coefficient and the adhesion time and the transportability. I checked.

[0095]

[Table 4]

Evaluation of results * Time (seconds) until the contact state between the image receiving material and the recording material reaches a steady state visually determined. ◯: Both recording material and image receiving material are good. ×: Either recording material or image receiving material. Is defective

[0097]

According to the present invention, the photothermal conversion type heat mode image receiving material and the recording material can be uniformly adhered to each other in a short time by a compact and low-priced device, and there is no trouble during transportation. It is possible to record.

[Brief description of drawings]

FIG. 1 is a perspective view showing winding of a photothermal conversion type heat mode image receiving material and a recording material of the present invention around a drum-shaped decompressor.

FIG. 2 is a cross-sectional view showing the basic configuration of a drum pressure reducer.

FIG. 3 is a cross-sectional view showing that the image receiving material and the recording material are in close contact with each other on a flat plate pressure reducer.

FIG. 4 is an overall configuration diagram showing a drum-shaped decompressor and the periphery of the decompressor.

FIG. 5 is a cross-sectional view showing an example of the layer structure of a photothermal conversion heat mode recording material and an image receiving material of the present invention.

[Explanation of symbols]

1 pressure roll 2 decompression hole (2-1 shows an open state, 2-2 shows a closed state) 3 heat mode recording material (3-1 is yellow, 3-2 is magenta, 3-3 is cyan, 3 -4 indicates a black recording material) 4 heat mode image receiving material 5 heat mode recording material replenishing means 6 heat mode image receiving material replenishing means 7 decompressor holding portion 8 optical writing means 9 housing 10 decompression hole valve 11,21 support 12,22 Cushion layer 13 Photothermal conversion layer 14 Ink layer 15,24 Back coat layer 23 Image receiving layer

Front Page Continuation (72) Inventor Sota Kawakami 1 Konica Stock Association, Sakura-cho, Hino-shi, Tokyo In-house

Claims (7)

[Claims] 1. A photothermal conversion heat mode recording method for recording by irradiating light according to image information in a state in which a surface having an ink layer of a recording material and an image receiving surface of an image receiving material are closely contacted or arranged in the vicinity thereof. In the photothermal conversion type heat mode image receiving material used, the surface roughness of the image receiving surface is Ra value 0.4 to 0.01.
Or a waviness of 2 μm or less, a photothermal conversion heat mode image receiving material. 2. A photothermal conversion heat mode recording method for recording by irradiating light according to image information in a state where the surface of the recording material having the ink layer and the image receiving surface of the image receiving material are in close contact or arranged in the vicinity. In the photothermal conversion heat mode image receiving material used, the smoother value of the image receiving surface is 23 ℃ ・ 55
Photothermal conversion type heat mode image receiving material characterized by being 5 to 20 mmHg at% RH. 3. The surface resistance of the image receiving surface is 10 ⁹ at 23 ° C. and 55% RH.
3. The photothermal conversion type heat mode image receiving material according to claim 1 or 2, which is Ω or less. 4. A photothermal conversion heat mode recording method for recording by irradiating light according to image information in a state where the surface of the recording material having the ink layer and the image receiving surface of the image receiving material are in close contact or arranged in the vicinity. In the photothermal conversion type heat mode recording material used, the surface roughness of the ink layer is Ra value 0.4 to 0.
The heat mode recording material is 01 or has a waviness of 2 μm or less. 5. A photothermal conversion heat mode recording method for recording by irradiating light according to image information in a state in which a surface having an ink layer of a recording material and an image receiving surface of an image receiving material are closely contacted or arranged in the vicinity thereof. In the photothermal conversion heat mode recording material used, the ink layer has a smoother value of 23 ° C.
Photothermal conversion type heat mode recording material, which is 5 to 20 mmHg at 55% RH. 6. The surface resistance of the ink layer is 10 at 23 ° C. and 55% RH.
The photothermal conversion type heat mode recording material according to claim 4 or 5, which has a resistance of ⁹ Ω or less. 7. The coefficient of static friction between the image receiving surface of the photothermal conversion heat mode image receiving material and the ink surface of the photothermal conversion heat mode recording material is 0.2 or less.
7. A photothermal conversion type heat mode image receiving material and a photothermal conversion type heat mode recording material according to any one of 6 above.