JPH0534896A - Hot melt transfer material for forming plate making mask, formation of plate making mask, plate making mask and method and device for recovering plate making mask - Google Patents

Abstract

PURPOSE:To form the plate making mask which has an excellent preservable property of the hot melt transfer material, is free from pinholes and has excel lent durability. CONSTITUTION:A light shielding layer 13 essentially consisting of an org. solvent dye and a resin incompatible with wax is formed bia a release layer 12 essentially consisting of the wax having >=100 deg.C m.p. on a base 11 and an adhesive layer 14 is formed at need onto the light shielding layer 13. The resin incompatible with the wax is at least one kind selected from a maleic acid resin, styrene resin, terpene resin, petroleum resin, chroman-indene resin, and isoprene resin. The hot melt transfer material 1 is superposed on a transparent film 2 coated 22 with the resin and the light shielding layer 13 of this hot melt transfer material 1 is thermally transferred onto the transparent film 2, by which the plate making mask is formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot-melt transfer material for making a plate-making mask and a method for making a plate-making mask for making a plate-making mask having a light-shielding layer by thermal transfer. The present invention also relates to a heat-melt transfer material for plate-making mask making and a plate-making mask making method for making a plate-making mask excellent in durability without pinholes.

The present invention also relates to a plate-making mask which protects a light-shielding layer formed by thermal transfer.

The present invention also relates to a plate-making mask having a light-shielding layer formed by thermal transfer, a plate-making mask collecting method, and a collecting device therefor.

[0004]

2. Description of the Related Art A plate-making mask is, for example, a thermal transfer sheet having a light-shielding layer and a light-transmissive receptor, which are superposed on each other. And then peeling off this thermal transfer sheet, or thermally transferring the light-shielding layer from the light-transmissive support on which the light-shielding layer of the plate-making mask plate is formed onto the support with a thermal head to remove it. I am making a prepress mask.

As a technique for producing a plate-making mask by using such thermal fusion transfer, for example, Japanese Patent Laid-Open No. 3-121454.
Is mentioned. This is a method for producing a light-shielding mask film for printing photoengraving. A heat-melt transfer material having a release layer, a coloring layer, and an adhesive layer laminated on a transparent film is overlaid, and these are used for a plate-making mask by heating pressure of a thermal head. Image-wise transferred to film.

Further, when a plate-making mask is produced by using such a thermal transfer system, it is difficult to handle the plate-making mask because the light-shielding layer is thin and its strength is insufficient due to the nature of thermal transfer. There is also a problem that the light-shielding layer is likely to be wrinkled or damaged, for example, scratched or shaken. In particular,
When the receptor is made of plastic film, its surface is smooth and hard, and the light-shielding layer does not soak into it, so the lack of strength is noticeable, and it is easy to hit such a plate-making mask against a hard object or rub it. It got scratched.

Therefore, as a conventional reinforcing means, a method of making a plate-making mask which is laminated to protect the light-shielding layer has been proposed. Conventionally, the light-shielding layer is heated on a receptor by a thermal head to thermally transfer the light-shielding layer. A plate-making mask was prepared by covering the whole with a laminate material and then cutting it to a required size.

[0008]

However, such a plate-making mask film generally uses a film of polyester or the like, and it tends to cause transfer failure due to storage of the hot-melt transfer material. The transfer part of the heat-melt transfer material was inferior in durability, especially in physical strength.

In order to protect the light-shielding layer, a laminating process is performed to form the protective layer. However, when the peeling strength is weak, the effect of the protective layer is not sufficient, and the peeling is also performed. When the strength is high, it is difficult to remove the protective layer and the mask cannot be corrected.

Further, the plate-making mask on which the light-shielding layer is formed by thermal transfer is unnecessary once it is used, and it is thrown away as it is. However, the receptor and the support occupy a large part of the cost of making the plate-making mask. , If the receptor or support on which the light shielding layer is formed can be reused,
It is possible to significantly reduce the cost of producing the plate-making mask.

In view of the above points, the inventions according to claims 1 to 4 can produce a plate-making mask which is excellent in the preservability of the heat-melt transfer material and has no pinholes and excellent durability. An object of the present invention is to provide a heat-melt transfer material for making a plate-making mask and a method for making a plate-making mask.

Further, the inventions according to claims 5 to 6 are strong enough to protect the light-shielding layer, and can remove the light-shielding layer provided by thermal transfer when the mask needs correction. Another object of the present invention is to provide a plate-making mask provided with a protective layer having a peelable strength.

Further, according to the invention described in claims 7 to 11, by reusing the receptor or the support of the plate-making mask, it is possible to significantly reduce the cost of producing the plate-making mask and to protect the environment. It is also an object of the present invention to provide a plate-making mask, a plate-making mask collecting method and a receptor collecting device for the same, which are useful from the viewpoint.

[0014]

In order to solve the above-mentioned problems, the invention of the hot-melt transfer material for making a plate-making mask according to claim 1 is a peeling method comprising a wax having a melting point of 100 ° C. or more as a main component on a support. It is characterized in that a light-shielding layer containing an organic solvent-soluble dye and a resin incompatible with wax as a main component is formed through the layers, and an adhesive layer is formed on the light-shielding layer as needed.

Further, in the invention of the hot melt transfer material for making a plate-making mask according to claim 2, the resin incompatible with the wax is a maleic acid resin, a styrene resin, a terpene resin, a petroleum resin, a chroman-indene resin. And is at least one selected from isoprene-based resins.

Further, in the invention of the plate-making mask making method of claim 3, the heat-melt transfer material for making a plate-making mask is laid on a resin-coated transparent film, and the light-shielding layer of the heat-melt transfer material for making a plate-making mask is provided. It is characterized in that it is heat-transferred to a transparent film to create a plate-making mask.

Further, in the invention of the plate-making mask making method of claim 4, the resin coat is an acrylic ester resin,
It is characterized by being at least one resin selected from methacrylic acid ester-based resins, carboxylic acid vinyl ester-based resins, carboxylic acid acrylic ester-based resins, and polyester-based resins.

The invention according to claims 1 to 4 will be described in detail below.

FIG. 1 is a layer constitutional view of a hot-melt transfer material for making a plate-making mask according to the first and second aspects of the invention. A hot-melt transfer material 1 for making a plate-making mask comprises a support 11 and a release layer 12 containing a wax having a melting point of 100 ° C. or more as a main component.
A light-shielding layer 13 containing a resin insoluble in an organic solvent-soluble dye and a wax as a main component is formed via the above, and an adhesive layer 14 is formed on the light-shielding layer as needed.

The resin incompatible with the wax of the light shielding layer 13 is at least one selected from maleic acid resins, styrene resins, terpene resins, petroleum resins, chroman-indene resins and isoprene resins. Regarding the incompatibility with the wax, the fine particles of the wax used in the release layer 12 and the resin are mixed, and after 24 hours at 60 ° C., the mixture is observed with a microscope to confirm the compatible state. If fine wax particles are observed as they are, they are incompatible.

It is desirable that the support 11 has good heat resistance and high dimensional stability. Examples of the material include papers such as plain paper, condenser paper, laminated paper and coated paper; resin films such as polyethylene, polypropylene and polyimide; composites of paper and resin film and metal sheets such as aluminum foil. Can be mentioned.

The peeling layer 12 has a melting point of 100.
As a wax having a melting point of 100 ° C. or higher, polyethylene wax, polyethylene oxide wax, polyamide wax,
Paraffin wax, ester wax, polypropylene wax and the like having a melting point of 100 ° C. or higher can be mentioned.

Examples of the organic solvent-soluble dye for the light-shielding layer 13 include azo type, metal complex salt type azo type, anthraquinone type, phthalocyanine type and triallylmethane type. A metal complex salt type azo system is preferable in terms of transmission density and solubility. The metal complex salt type azo dye has an azo bond (-N = N-), and forms a complex salt with a metal (for example, chromium, nickel, copper, iron, cobalt, zinc, etc.). Fast Yellow # 1101, # 1103, # 41
20 Orange # 3209, # 3201 Red # 23
03, # 3304, # 3306, # 3320 (Orient Chemical Industries), Neopen Yellow 159, Orange 2
52, Red 336, 366 (BASF), Spiron
Yellow 3RH, GRLH, GRH, Orange GR
H, 2RH, Red BEH (Hodogaya Kagaku) and the like.

Further, an ultraviolet absorber may be added to the light shielding layer 13 if necessary. Examples of the ultraviolet absorber include JP-A-59-158287, JP-A-63-74686, JP-A-63-145089, JP-A-59-196292, and JP-A-6-158692.
No. 2-229594, No. 63-122596, No. 61
The compounds described in JP-A-283595, JP-A-1-204788, etc., and compounds known to improve image durability in photographs and other image recording materials can be mentioned.

The maleic acid-based resin which is incompatible with the wax which is the main component of the light-shielding layer 13 includes marquide NO1, NO2, NO5, NO6, NO8 and NO31.
NO32, NO33, NO34, 32-30WS, 33
02 (Arakawa Chemical Industry), Harimack R80, T80, M
453, 145P (Harima Kasei Kogyo) and the like.
Also, as the styrene resin, Heimer SB75, S
T95, ST120, ST130, ST150, SBM
100, SBM73F, TB1000, TB-900
0, SAM955 (Sanyo Kasei), Suprapearl AP
20, AP30 (BASF), Vicolas Tech (Hercules) and the like. Further, as the terpene resin, YS resin P # 700, # 800, # 900, #
1000, # 1150, YS Polyster # 2100, #
2115, # 2130 (Yasuhara Yushi) and the like.

As the petroleum resin, an aliphatic petroleum resin (for example, Escoletz 1102B, 1103U, Hi-Tac (Tonen Petrochemical), Hiletz T100X, G100X
(Mitsui Petrochemical), Quinton A100, B170, C
100, D100, U185 (Nippon Zeon), aromatic petroleum resin (eg Toho High Resin # 90, # 120)
(Toho Petrochemical), Nisseki Neopolymer 120 (Nippon Petrochemical), Petrosin # 80, # 120 (Mitsui Petrochemical), hydrogenated petroleum resin (for example, Alcon P, M (Arakawa Chemical), Escoletz 5000 (Esso Chemical). , Dicyclopentadiene-based petroleum resin (eg Quinton 1300,
1500, 1700 (Zeon Corporation)). Examples of chroman-indene resins include coumarone (Ouchi Shinko Kagaku), coumarone resin (Kobe Yuka), uberesin (Ube Organic Chemistry), Vico N resin (Hercules) and the like. As isoprene-based resin, Escoletz 500
0 (Tonen Petrochemical), A, B, C type (Mitsubishi Yuka) and the like.

Further, as the light-shielding layer 13, in addition to the resin mentioned in claim 2, a resin incompatible with wax, for example, a cellulose resin, polyvinyl alcohol resin, polyvinylpyrrolidone resin, nitrile rubber, polysiloxane resin,
Ionomer resin, polysulfone resin, polyvinylaniline resin, polyvinyl ether resin, polybutadiene resin, polypropylene resin, polyethylene resin, polyacrylonitrile resin, polyvinylidene chloride resin, polyoxymethylene resin, polyisobutylene resin, urea resin,
You may contain a melamine resin, an epoxy resin, etc. as needed.

The composition of the adhesive layer 14 is mainly composed of a general thermoplastic resin. Examples of the adhesive layer include natural waxes such as spermaceti, beeswax, lanolin, arnava wax, candelilla wax, montan wax, paraffin wax, microclean wax, oxide wax, ester wax, synthetic wax such as low molecular weight polyethylene, and laurin. Acids, higher fatty acids such as myristic acid, palmitic acid, stearic acid, frommenic acid and behenic acid, higher alcohols such as stearyl accol and behenyl alcohol, esters such as fatty acid esters of sorbitan, amides such as stearamide and oleinamide, Polyamide resin, polyester resin,
Epoxy resin, polyurethane resin, acrylic resin, vinyl chloride resin, cellulose resin, polyvinyl resin, petroleum resin, ethylene-vinyl acetate copolymer resin, phenol resin, styrene resin, natural rubber,
Elastomers such as styrene-butadiene rubber, isoprene rubber, chloroprene rubber, rosin and its derivatives,
A tackifier filler such as a terpene resin and a hydrogenated petroleum resin, a plasticizer, an antioxidant and the like may be used alone or in combination.

FIG. 2 is a block diagram showing a method for producing a plate-making mask according to claims 3 and 4. In this plate-making mask making method, a hot-melt transfer material 1 for making a plate-making mask according to claim 1 or 2 is superposed on a transparent film 2 having a resin 21 coated on a support 21 and a print head 3 such as a thermal head. Heat transfer is performed to create a plate-making mask. The support 21 has the same structure as the support 11 of the hot-melt transfer material 1 for making a plate-making mask. The resin coat 22 is at least one resin selected from acrylic acid ester-based resins, methacrylic acid ester-based resins, carboxylic acid vinyl ester-based resins, carboxylic acid acrylic ester-based resins, and polyester-based resins.

Examples of acrylic acid ester resins include ethyl acrylate, ethylene-ethyl acrylate, ethylene-ishibutyl acrylate, ethylene-acrylic acid and the like. Examples of the methacrylic acid ester-based resin include methyl methacrylate and ethylene-methyl methacrylate. Examples of the carboxylic acid vinyl ester resin include ethylene-vinyl acetate. Examples of the carboxylic acid allyl ester resin include ethylene-methine vinyl acetate.

The inventions according to claims 5 and 6 will be described in detail below.

According to a fifth aspect of the present invention, in a plate-making mask having a light-shielding layer formed by thermal transfer, the surface on which the light-shielding layer is formed by thermal transfer and / or the opposite surface is laminated to provide a protective layer. The peel strength of the protective layer is strong enough to protect the light-shielding layer and peelable so that the light-shielding layer provided by thermal transfer can be removed.

In the plate-making mask according to the sixth aspect of the invention, the 180-degree peel strength of the protective layer provided by laminating is 10 g / 25 mm to 1000 g / 25 mm.
It is characterized by being.

In the plate-making mask of the present invention, a light-shielding layer is formed by thermal transfer, and this forming method can be classified into a transfer type and a peeling type.

As shown in FIG. 3, the transfer type plate-making mask has a back surface of the thermal transfer sheet 4 in which a thermal transfer sheet 4 having at least a light shielding layer 42 on a support 41 and a light transmissive receptor 5 are superposed. After heat-printing with the print head 3, the thermal transfer sheet 4 is peeled off and the light-shielding layer 42 is applied to the receptor 5.
Heat transfer to the side to prepare the plate-making mask M.

As shown in FIG. 4, the peeling type plate-making mask has at least a light shielding layer 62 on a light transmitting support 61.
The light-shielding layer 62 side of the plate-making mask original 6 having the above is superposed on the receptor 7, and the back surface of the receptor 7 is heat-printed by the print head 3 to thermally transfer the light-shielding layer 62 to the receptor 7, and then the receptor 7 The body 7 is peeled off from the plate-making mask original plate 6 to prepare a plate-making mask M.

The thermal transfer sheet 4 and the plate-making mask original plate 6
The basic layer structure is the thermal transfer layer which is the support and the light-shielding layer in FIGS. 3 and 4, but a release layer is provided between the support and the thermal transfer layer for efficient thermal transfer by heating. May be. Further, an adhesive layer may be provided on the thermal transfer layer. As an example of such a multilayer structure, the following layers may be sequentially laminated on a support. However, it is not limited to this. Release Layer, Thermal Transfer Layer Release Layer, Thermal Transfer Layer, Adhesive Layer Thermal Transfer Layer, Adhesive Layer The support preferably has good heat resistance and high dimensional stability. As the material,
Examples thereof include plain paper, condenser paper, laminated paper and coated paper; resin films such as polyethylene, polypropylene and polyimide; a composite of paper and resin film; and a metal sheet such as aluminum foil.

The heat transfer layer, which is a light-shielding layer, may be any one as long as it is melted by heat and exhibits adhesiveness to the receptor and the support, but in general, coloring materials, waxes, thermoplastic resins, and additives are appropriately added. It is configured by combining.

Examples of the coloring material include known dyes and pigments, for example, alkaline earth metal carbonates, titanium dioxide, magnesium oxide, zinc oxide, alumina, silica, carbon black, nigrosine dye, and Sudan black SM. , First Yellow G, Benzidine Yellow, Pigment Yellow, Oil Yellow GG,
Zapon First Yellow CGG, Sumiplast Yellow GG, India First Orange, Sumiplast Orange G, Pigment Orange R, Zapon First Orange GG, Irgadicine Red, Paranitroaniline Red, Toluidine Red, Resole Red 2G,
Rake Red O, Oil Scarlet, Zapon First Scarlet OG, Eisenspiron Red BEH,
Methyl violet B lake, phthalocyanine blue,
Pigment Blue, First Gen Blue 5007, Victoria Blue F4R, Sudan Blue, Oil Peacock Blue, Brilliant Green B, and Phthalocyanine Green can all be used.

As waxes, carnauba wax, montan wax, beeswax, rice wax, candelilla wax, lanolin wax, paraffin wax, microlisterine wax, polyethylene wax, sazol wax, oxidative wax, amide wax, Silicon wax or the like is used.

Further, as the thermoplastic resin, polyamide resin (nylon, etc.), polyester resin, poly (meta)
Acrylic ester resin (polymethylmethacrylate,
Polyethyl acrylate, etc.), polyurethane resin, polyvinyl chloride resin, polyvinylidene chloride resin, polystyrene resin, polyvinyl acetate resin, polyvinyl chloride-vinyl acetate resin, polystyrene-acrylic resin, polyethylene-vinyl acetate resin, polyethylene resin, polypropylene Resin, polybutadiene resin, polyvinyl alcohol resin, phenol resin, cellulosic resin (methyl cellulose, ethyl cellulose, carboxymethyl cellulose, nitrocellulose, acetyl cellulose, etc.), polyvinyl ether resin, polyvinyl pyrrolidone resin, polyvinyl aniline resin, polysulfone resin, polycarbonate resin, ionomer Resin, polysiloxane resin, acetal resin (polyvinyl butyral, polyvinyl acetal, polyvinyl Rumaru etc.), petroleum resins, rosin resin, chroman - indene resins, terpene resins, styrene - butadiene rubber, isoprene rubber, nitrile rubber or the like is used.

Further, various additives such as various surfactants, higher fatty acids (lauric acid, myristic acid, palmitic acid, stearic acid, flomenic acid, behenic acid, etc.),
Long-chain alcohols (stearyl alcohol, behenyl alcohol, etc.), metal salts of long-chain fatty acids (calcium stearate, zinc barmitate, etc.), antioxidants, various plasticizers, silicone oil, etc. are used.

These color materials, waxes, thermoplastic resins,
The preferable composition ratio of each material such as an additive is completely different depending on the layer structure of each layer laminated on the support.

Further, the peeling layer may be a layer formed by combining waxes, thermoplastic resins, and additives used in the thermal transfer layer, which itself can undergo cohesive failure by melting or softening during heating. , Or a resin that does not exhibit a relatively strong adhesive force in combination with other resins, for example, a silicone resin, a fluorine resin (Teflon, a fluorine-containing acrylic resin, etc.), a polysiloxane resin, an acetal resin (polyvinyl butyral, polyvinyl acetal, It may be a layer using polyvinyl formal or the like). However,
In the case of the latter layer structure made of a resin that does not easily exhibit adhesive strength,
Since the material of the release layer greatly changes depending on the composition of the layer adjacent thereto, the above example is merely an example.

Further, as the adhesive layer, those mentioned above are used. The structure of the back side of the support is arbitrary, and a back coat layer such as an AST layer may be provided.

The receptor and the support are made of a known material such as polyethylene, but it is desirable that the material has good heat resistance and high dimensional stability. It may be surface-treated or coated for the purpose of imparting conductivity or improving adhesiveness.

As described above, the light shielding layers 42 and 6 are formed by thermal transfer.
2, the light-shielding layers 42 and 62 of the plate-making mask M are provided on at least the support 8 as shown in FIG.
The protective layer G is provided by laminating the laminated material 8 on which the adhesive layer 82 is provided.

FIG. 6 is a constitutional view of laminating a plate-making mask. Heat is applied to the laminate material 8 which is conveyed vertically facing by a heater roll 90, and the plate-making mask M is conveyed between the laminate materials 8. Laminating roll 91
Laminate with.

This adhesive layer contains a thermosoftening resin or an adhesive material that can be adhered at room temperature. As the heat-softening resin, ethylene copolymer, polyvinyl acetal resin, polyamide resin, polyester resin, polyurethane resin, polyolefin resin, acrylic resin, vinyl chloride resin, cellulose resin, rosin resin, ionomer Resins and 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 And a polymer compound having a softening point of 50 to 200 ° C., such as a phenol resin, a terpene resin, a cyclopentadiene resin and an aromatic hydrocarbon resin. The softening point is measured by JI
It can be carried out by adopting the ring and ball method as described in S k2531.

The surface on which the light-shielding layer is formed and / or the opposite surface is laminated by thermal transfer to provide a protective layer. In this way, the laminate may be provided on both sides to prevent curling.

The peel strength of the protective layer provided by laminating is sufficient to protect the light-shielding layer, and the light-shielding layer provided by thermal transfer can be removed when the mask needs correction. Moreover, it has a peelable strength. The 180 degree peel strength of the protective layer provided by laminating is
It is 10 g / 25 mm to 1000 g / 25 mm.

Low-temperature laminating may be performed in order to reduce the disturbance of the light-shielding layer formed by thermal transfer. In this case, a laminate material and a laminator capable of low temperature adhesion are used. The melt viscosity of the light shielding layer may be increased in order to reduce the disturbance of the light shielding layer formed by thermal transfer.

The 180 ° peel strength is JIS K
6845 (Measurement according to the case of a flexible material and a rigid material. If the peel strength is 10 g / 25 mm or less, the adhesive force is weak and the effect of the protective layer is not sufficient.
If it is / 25 mm or more, the adhesive force is too strong, and it is very troublesome to correct the plate-making mask.

FIG. 7 shows correction of the plate-making mask. A notch K is made by a cutter or the like in the protective layer G provided by laminating the portion of the plate-making mask M to be corrected. Then, at this portion, the adhesive layer 82 and the protective layer 81 are peeled off from the receptor or the support of the plate-making mask M. The light-shielding layers 42 and 62 are removed by a method such as wiping with a solvent that dissolves the binder of the light-shielding layers 42 and 62 in the peeled portion, or scraping off the light-shielding layers 42 and 62, and the correction is performed.

The inventions according to claims 7 to 11 will be described in detail below.

According to a seventh aspect of the invention, in the plate-making mask in which the light-shielding layer is formed on the receptor by thermal transfer, the receptor is insoluble in a solvent that dissolves or prevents at least the binder of the light-shielding layer. Is characterized by.

The invention according to claim 8 uses the solvent according to claim 7 to remove the light-shielding layer formed by thermal transfer of the used plate-making mask according to claim 7,
It is characterized in that the receptor of the plate-making mask can be reused.

According to a ninth aspect of the present invention, solvent forming means for supplying the solvent according to the seventh aspect to the used plate making mask according to the seventh aspect and the plate making mask to which the solvent is supplied are formed. And a light-shielding layer removing means for removing the formed light-shielding layer.

Further, the invention according to claim 10 is characterized in that the light-shielding layer removing means is constituted by a physical means for rubbing a used plate-making mask in a state where the solvent is attached thereto.

The invention according to claim 11 is characterized in that the light-shielding layer removing means is constituted by a physical means for adhering or containing a solvent to the used plate-making mask.

As shown in FIG. 8, the plate-making mask M of the present invention has a light-shielding layer 102 formed on a receptor 100 by thermal transfer. The method of making the same is the same as that described above, and the transfer type and peeling type are used. However, these are configured in the same manner as described above, and the thermal transfer sheet and the plate-making mask original plate used for preparing the mask for plate-making are also configured in the same manner as described above, and therefore description thereof will be omitted.

Receptor 100 of plate-making mask M of the present invention
Is transparent and insoluble in a solvent that dissolves or prevents the light shielding layer 102 formed by thermal transfer. That is, by using the solvent, only the light shielding layer 102 formed on the receptor 100 can be removed, and the receptor 100 can be reused.

Further, the receptor of the plate-making mask may be one in which a receptor layer is provided on the support, or the support may also serve as the receptor layer. As the support used for the receptor, a general support can be used as long as it is insoluble in the solvent and transparent.
For example, processed paper and plastic film can be used. This processed paper includes art paper, coated paper, cast coated paper, baryta paper, and paraffin paper. As the plastic film, a) low-density polyethylene, high-density polyethylene, linear low-density polyethylene, ethylene / vinyl acetate copolymer, ethylene / acrylic acid copolymer, ethylene copolymer such as ionomer, b)
It is possible to use polypropylene, c) polystyrene, d) polyvinyl chloride, e) polyamide, f) polyester, g) polycarbonate, d) polyvinylyl alcohol, g) saponified ethylene / vinyl acetate copolymer and the like.

When the receiving layer is provided on the support, a general one can be used for the receiving layer as long as it is insoluble in the solvent and transparent. This receiving layer can be formed, for example, by mixing a resin having a low softening point, a tackifier, a pressure-sensitive adhesive that exhibits tackiness when heated, and a heat-meltable substance and / or a thermoplastic substance. The receiving layer can also be formed by applying a pressure-sensitive adhesive composition to the surface of the resin layer made of the heat-meltable substance and / or the thermoplastic substance. Alternatively,
The adhesive substance may be formed by enclosing the adhesive substance in a microcapsule by a known method in the resin layer made of the heat-meltable substance and / or the thermoplastic substance.

Examples of the resin having a low softening point used in the receiving layer include ethylene-based copolymers such as ethylene-vinyl acetate and ethylene-ethyl acrylate; polyamide-based resins such as nylon and dimer acid; styrene-butadiene and styrene-isoprene. Polystyrene resin such as styrene-ethylene-butylene; polyester resin; polyolefin resin; polyvinyl ether resin; polymethylmethacrylate resin, ionomer resin; cellulose resin; polyurethane resin; acrylic resin; epoxy resin; Melamine-based resins; vinyl chloride-based resins and the like.

Examples of the tackifier include rosin tackifiers, water-added rosin tackifiers, rosin maleic acid tackifiers, polymerized rosin tackifiers and rosin phenol tackifiers. Examples thereof include modified or modified rosin-based tackifiers, terpene-based tackifiers, petroleum resin-based tackifiers and modified tackifiers thereof.

Examples of the pressure-sensitive adhesive that exhibits tackiness upon heating include natural rubber, chloroprene rubber-based, butyl rubber-based, polyacrylic acid ester-based, nitrile rubber-based, polysulfide-based, silicone rubber-based, reclaimed rubber-based, SBR System, polyisoprene system, polyvinylyl ether system, beech N system and the like.

These may be used alone or in combination of two or more. The receiving layer can be formed, for example, by adopting a coating method using a solvent, a hot melt coating method, or the like. The thickness of the receiving layer thus formed is usually 0.1 to 30 μm,
It is preferably 0.3 to 20 μm.

Next, the plate-making mask collecting method and its collecting device will be described with reference to the drawings. FIG. 9 is a schematic configuration diagram of the plate-making mask collecting device.
Conveying rollers 111 to 113 are arranged in the apparatus main body 110. Further, inside the apparatus main body 110, a light shielding layer removing portion 115 and a drying portion 116 are partitioned by a partition wall 114, and the solvent ejecting nozzle 1 is provided in the light shielding layer removing portion 115.
17, 118 are provided, and the drying unit 116 is provided with a hot air jet nozzle 119.

FIG. 10 is a diagram showing a method of collecting the plate-making mask, in which the used plate-making mask M is inserted into the light-shielding layer removing section 115, and in this light-shielding layer removing section 115, the solvent jet nozzle 11 is ejected.
The solvent is sprayed from 7, 118 to the surface of the used plate-making mask M on which the light shielding layer is provided, and the light shielding layer is removed.
The number of solvent ejection nozzles may be increased or decreased as necessary.

The used plate-making mask M is the light-shielding layer removing portion 11
5 is transported to the drying unit 116 by the transport roller 112. In the drying unit 116, hot air is jetted from the hot air jet nozzle 119, and the platemaking mask M wet with the solvent is dried and discharged.

FIG. 11 is a schematic configuration diagram of another plate-making mask collecting apparatus. In this plate-making mask collecting apparatus, a light-shielding layer removing means 120 is provided in a light-shielding layer removing section 115 in the apparatus body 110.
And solvent ejection nozzles 117 and 118 are provided before and after this.

FIG. 12 is a schematic configuration diagram of still another plate-making mask collecting apparatus. In this plate-making mask collecting apparatus, the light-shielding layer removing means 120 is arranged in the light-shielding layer removing section 115 in the apparatus main body 110, and above it. A solvent ejection nozzle 117 is arranged in the solvent ejection nozzle 117.
A solvent is supplied to 20, and the light shielding layer is removed by the solvent from the light shielding layer removing means 120.

The light shielding layer removing means 120 may be constituted by a brush 130 as shown in FIG. 13, and the light shielding layer of the plate-making mask M may be scraped and removed by rotation of the brush 130. As shown in FIG. 14, the roller 140 may be formed by winding a non-woven fabric, and the light shielding layer of the plate-making mask M may be rubbed and removed by the rotation of the roller 140.

As described above, the solvent supply nozzle may be disposed in front of the light-shielding layer removing means to apply the solvent to the used plate-making mask, or the solvent supply nozzle may supply the solvent to the light-shielding layer removing means. You may remove a light shielding layer with a solvent. Further, in any case, a solvent supply nozzle for washing out the removed light-shielding layer may be provided after the light-shielding layer removing means. Also,
The number of solvent supply nozzles may be increased or decreased as necessary. The drying process after the removal of the light-shielding layer is the same as that shown in FIGS. 9 and 10.

FIG. 15 is a schematic configuration diagram of still another plate-making mask collecting apparatus. In this plate-making mask collecting apparatus, a light-shielding layer removing means 150 in which a solvent is attached to or impregnated with a light-shielding layer removing section 115 in the apparatus main body 110 is shown. Is arranged.
Light-shielding layer removing means 10 adhered or impregnated with this solvent
For example, the non-woven fabric 151 or the like is conveyed little by little in the opposite direction in accordance with the conveyance of the used plate-making mask M, and the plate-making mask M is always rubbed at a clean portion.

The structure of the drying unit 116 after removing the light shielding layer can be the same as that of FIGS. 9 and 10. Further, in the light shielding layer removing means 150 to which the solvent is adhered or impregnated, the drying step can be omitted by adjusting the amount of the impregnated solvent appropriately.

[0078]

According to the inventions of claims 1 to 4, the heat-melt transfer material comprises an organic solvent-soluble dye and a wax on a support through a release layer containing a wax having a melting point of 100 ° C. or more as a main component. A light-shielding layer containing as a main component an incompatible resin is formed, which makes it possible to create a plate-making mask that has excellent storability of the heat-melt transfer material and has no pinholes and excellent durability. .

Further, the invention according to claims 5 to 6 is strong enough to protect the light-shielding layer, and the light-shielding layer provided by thermal transfer can be removed when the mask needs correction. In addition, since a protective layer having a peelable strength is provided, the light-shielding layer of the plate-making mask is sufficiently protected and the mask can be easily corrected.

Furthermore, in the inventions according to claims 7 to 11, the receptor or the support of the plate-making mask can be reused, the production cost of the plate-making mask can be greatly reduced, and the environmental protection can be achieved. It is also beneficial from the point.

[0081]

EXAMPLES Examples of the invention described in claims 1 to 4 will be described below.

Preparation of Thermal Melt Transfer Material A fusion preventing layer (nitrocellulose 50% by weight, urethane silicone resin 50% by weight, 0.2 μm) was provided on the back surface.
A PET film having a thickness of μm was used, and a release layer and a light-shielding layer were laminated on the surface of this PET film in the configuration shown in Table 1.

[0083]

[Table 1] The release layer is shown in Table 2 and the light shielding layer is shown in Table 3.

[0084]

[Table 2]

[0085]

[Table 3] Harrier Star DS90 (Harima Kasei) is a rosin resin and is compatible with wax, and Tamanor 526 (Arakawa Chemical Industry) is a phenol resin and is compatible with wax. The other resins used were those described above.

As the transparent film, a 100 μm transparent PET film was used.

CH5514 (Seiko Denshi) was used as a printer, and printing was performed on a transparent film.

This evaluation method is shown below.

Printability before storage of the heat-melt transfer material, scratch strength of the print, and storage of the heat-melt transfer material (50 ° C. 3
Printability after 10 days, and scratch strength of the printed matter.

The scratch strength of this printed material was 0.
The load at which scratches started to strike with a 25 mm sapphire needle was used.

The printability level is as follows.

○ Good △ Scratching occurs × Cannot print The evaluation results are shown in Table 4.

[0093]

[Table 4] In this invention, the deterioration of printability and print strength after storage was improved.

An adhesive layer (Marquid No. NO31 50% by weight Sprapearl AP20 was added to the sample No5.
50 wt% 0.5 μm) was laminated, and the effect of the present invention was similarly obtained.

Further, as a 100 μm PET obtained by coating a transparent film with 0.1 μm of ethyl acrylate resin,
Printing was similarly performed with the hot melt transfer material of sample NO5. As a result, the number of pinholes generated was 10 / m ^{2 in} the case of a transparent film not coated with a resin, while the number of pinholes was 1 / m ² in the case of coating with an ethyl acrylate resin of 0.1 μm, which was effective. . Similarly, the effect of the present invention was obtained also in a transparent film coated with a methyl methacrylate resin, an ethylene vinyl acetate resin, or an ethylene methyl vinyl acetate resin.

Hereinafter, embodiments of the invention described in claims 5 to 6 will be described.

Example 1 A mask pattern prepared on a computer by a thermal transfer line printer was output to a commercially available OHP sheet (100 μm) having an acrylic resin overcoat layer on the surface thereof to prepare a plate-making mask original plate.

At this time, a thermal transfer sheet was used in the thermal transfer line printer.

A fusion preventing layer (nitrocellulose, 5
A peeling surface and a coloring layer were laminated on the surface of a PET film of 4 μm provided with 0% by weight, urethane silicone resin, and 50% by weight and a film thickness of 0.5 μm).

Peeling layer Polyethylene wax (toluene dispersion) and ethylene vinyl acetate (toluene solution) were mixed and stirred so that the respective solid content concentrations were as follows.

Polyethylene wax 95% by weight Ethylene vinyl acetate 5% by weight This coating solution was coated on the surface of the PET film to a thickness of 0.5 μm.

Coloring Layer The following coloring materials and resins were dissolved in IPA so that the respective solid content concentrations were as follows.

Varifast Red # 3306 (Orient Chemical Co., Ltd.) 50% by weight Marquid NO31 (Arakawa Chemical Co., Ltd.) 50% by weight This coating solution was applied to the PET film having a release layer in a thickness of 2.0 μm.

This original plate was laminated with a laminator having a structure shown in FIG. 6 using a laminating material having a support of 12 μm and an adhesive layer of 15 μm to provide a protective layer.

At this time, the temperature of the laminating roll is 60
C., the temperature of the heater roll was 100.degree. C., and the laminating speed was 2 m / min. Further, PET was used for the support of the laminate material, and EVA resin having a softening point of 41 ° C. was used for the adhesive layer. The softening point here is the Vicat softening point described in ASTM D1521.

Example 2 The same as Example 1 except that EVA resin having a softening point of 52 ° C. was used for the adhesive layer of the laminate material.

Comparative Example 1 The same as Example 1 except that a low density polyethylene resin having a softening point of 90 ° C. was used for the adhesive layer of the laminate material.

Comparative Example 2 The same as Example 1 except that an EEA resin having a softening point of 45 ° C. was used for the adhesive layer of the laminate material.

The evaluation was performed on the following. Peel strength The peel strength at 180 ° C. was measured according to JIS K 6845 (for flexible materials and rigid materials). Adhesive strength (bending test) As shown in FIG.
Then, a bending test was repeated 10 times. After the bending test, the degree of peeling of the laminate at the ends was evaluated. Ease of correction Cut only the protective layer to a size of 1 cm x 1 cm with a cutter,
Whether or not the protective layer was peeled off by hand was evaluated, and the ease of correction was evaluated. These evaluations are shown in Table 5.

[0110]

[Table 5] Hereinafter, examples of the invention described in claims 7 to 11 will be described.

Thermal transfer sheet The following thermal transfer sheets were used.

A fusion preventing layer (nitrocellulose 5
0% by weight, 50% by weight of urethane silicone resin, film thickness of 0.
The peeling surface and the colored layer were laminated on the surface of a PET film having a thickness of 5 μm and having a thickness of 4 μm.

Peeling layer Polyethylene wax (toluene dispersion) and ethylene vinyl acetate (toluene solution) were mixed and stirred so that the respective solid content concentrations were as follows.

Polyethylene wax 95% by weight Ethylene vinyl acetate 5% by weight This coating solution was coated on the surface of the PET film to a thickness of 0.5 μm.

Coloring Layer The following coloring materials and resins were dissolved in IPA so that the solid concentration of each of them was as follows.

Neopen Red 336 (BASF) 50% by weight Spurer Pearl AP20 (BASF) 25% by weight Marquid NO31 (Arakawa Chemical Industries) 50% by weight This coating solution has a thickness of 2.0 μm on the PET film provided with a release layer. Applied to

Polyester resin (Vylon 20
0, manufactured by Toyobo) having a receiving layer of 0.2 μm was used.

A mask pattern created on a computer was output by a printing thermal transfer line printer.

Method of Removing Light-Shielding Layer Isopropyl alcohol was used as the solvent, and the printed receptor was treated with the brush shown in FIG. 13 as the means for removing the light-shielding layer in the recovery device of FIG.

Comparative Example 1 Thermal transfer sheet The same one was used in Example 1.

An image receiving layer of rosin-modified resin (DS-90, Harima Kasei Co., Ltd.) provided on PTE of 100 μm was 0.2 μm.

Printing The same one was used in Example 1.

Method for removing light-shielding layer The same procedure as in Example 1 was carried out.

Although the light-shielding layer was removed from the receptor treated by the method of Example 1, the receptor layer was not removed when the light-shielding layer was removed, and the receptor was removed again to perform printing. However, there was no blurring of the printing, and the same printing as when the receptor was used for the first time was obtained.

On the other hand, in the receptor treated by the method of Comparative Example 1, the receptor layer was removed, and when printing was carried out again using this receptor, blurring of the print occurred, and the receptor was removed for the first time. The print was inferior to that when using.

[0126]

As described above, the first to fourth aspects are provided.
In the invention described above, the heat melting transfer material has a melting point of 1 on the support.
Through a release layer composed mainly of wax at 00 ° C or higher,
Since the light-shielding layer containing a resin that is incompatible with the organic solvent-soluble dye and wax as a main component is formed, a plate-making mask that has excellent storability of the heat-melt transfer material and excellent durability without pinholes is provided. Can be created.

Further, the invention according to claims 5 to 6 is strong enough to protect the light-shielding layer, and the light-shielding layer provided by thermal transfer can be removed when the mask needs correction. Further, since the protective layer having a peelable strength is provided, the light-shielding layer of the plate-making mask is sufficiently protected, and the mask can be easily corrected.

Further, in the inventions according to claims 7 to 11, the receptor or the support of the plate-making mask can be reused, whereby the production cost of the plate-making mask can be greatly reduced. It is also beneficial in terms of environmental protection.

[Brief description of drawings]

FIG. 1 is a layer configuration diagram of a hot-melt transfer material for making a plate-making mask.

FIG. 2 is a configuration diagram showing a method of creating a plate-making mask.

FIG. 3 is a diagram showing the production of a transfer type plate-making mask.

FIG. 4 is a diagram showing the production of a peeling type plate-making mask.

FIG. 5 is a configuration diagram for laminating a plate-making mask.

FIG. 6 is a configuration diagram of a laminator.

FIG. 7 is a diagram showing correction of a plate-making mask.

FIG. 8 is a configuration diagram of a plate-making mask.

FIG. 9 is a schematic configuration diagram of a plate-making mask recovery device.

FIG. 10 is a diagram showing the recovery of the plate-making mask.

FIG. 11 is a schematic configuration diagram of another plate-making mask recovery device.

FIG. 12 is a schematic configuration diagram of another plate-making mask recovery device.

FIG. 13 is a diagram in which the light-shielding layer removing means is configured by a brush.

FIG. 14 is a diagram in which the light-shielding layer removing means is made of a non-woven fabric.

FIG. 15 is a schematic configuration diagram of another plate-making mask recovery device.

FIG. 16 is an explanatory diagram of a bending test.

[Explanation of symbols]

1 Thermal melting transfer material 2 transparent film 11 Support 12 Release layer 13 Light-shielding layer 14 Adhesive layer 22 Resin coat

Continued front page    (72) Inventor Sota Kawakami             Konica Stock, 1 Sakura-cho, Hino City, Tokyo             In the company

Claims (11)

[Claims] 1. A light-shielding layer containing an organic solvent-soluble dye and a resin incompatible with the wax as a main component is formed on a support through a release layer containing a wax having a melting point of 100 ° C. or more as a main component. A heat-melt transfer material for making a plate-making mask, wherein an adhesive layer is formed on the light-shielding layer as needed. 2. The resin incompatible with the wax is at least one selected from maleic acid resins, styrene resins, terpene resins, petroleum resins, chroman-indene resins, and isoprene resins. Claim 1
A heat-melt transfer material for making a plate-making mask as described above. 3. A heat-melt transfer material for making a plate-making mask according to claim 1 or 2 is laid on a resin-coated transparent film, and a light-shielding layer of the heat-melt transfer material for making a plate-making mask is formed on the transparent film. A method for making a plate-making mask, which comprises thermally transferring and making a plate-making mask. 4. The resin coat is made of at least one resin selected from acrylic acid ester-based resins, methacrylic acid ester-based resins, carboxylic acid vinyl ester-based resins, carboxylic acid acrylic ester-based resins, and polyester-based resins. The method for producing a plate-making mask according to claim 3, wherein 5. In a plate-making mask having a light-shielding layer formed by thermal transfer, a protective layer is provided by laminating the surface on which the light-shielding layer is formed by thermal transfer and / or the opposite surface, and the peel strength of the protective layer is increased. A plate-making mask having sufficient strength to protect the light-shielding layer and peelable so that the light-shielding layer provided by thermal transfer can be removed. 6. The 180 degree peel strength of the protective layer provided by pre-lamination is 10 g / 25 mm to 1000.
The plate-making mask according to claim 5, wherein g / 25 mm. 7. A plate-making mask in which a light-shielding layer is formed on a receptor by thermal transfer, wherein the receptor is insoluble in a solvent that dissolves or prevents at least a binder of the light-shielding layer. 8. The solvent according to claim 7 is used to remove the light-shielding layer formed by thermal transfer of the used plate-making mask according to claim 7, so that the receptor of the plate-making mask can be reused. A method for collecting a plate-making mask, comprising: 9. A solvent supply means for supplying the solvent according to claim 7 to a used plate-making mask according to claim 7, and a light shield for removing a light-shielding layer formed on the plate-making mask supplied with the solvent. A plate-making mask recovery device comprising a layer removing means. 10. The plate-making mask collecting device according to claim 9, wherein the light-shielding layer removing unit is constituted by a physical unit that scrapes a used plate-making mask in a state where the solvent is attached thereto. 11. The plate-making mask collecting device according to claim 9, wherein the light-shielding layer removing unit is constituted by a physical unit that scrapes a used plate-making mask by adhering or containing a solvent.