WO1998034156A1 - Support de materiau d'image - Google Patents

Support de materiau d'image Download PDF

Info

Publication number
WO1998034156A1
WO1998034156A1 PCT/JP1998/000257 JP9800257W WO9834156A1 WO 1998034156 A1 WO1998034156 A1 WO 1998034156A1 JP 9800257 W JP9800257 W JP 9800257W WO 9834156 A1 WO9834156 A1 WO 9834156A1
Authority
WO
WIPO (PCT)
Prior art keywords
resin
layer
thermoplastic resin
support
image material
Prior art date
Application number
PCT/JP1998/000257
Other languages
English (en)
Japanese (ja)
Inventor
Touru Noda
Masayuki Tsubaki
Kengo Yamane
Original Assignee
Mitsubishi Paper Mills Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Paper Mills Ltd. filed Critical Mitsubishi Paper Mills Ltd.
Priority to JP53270598A priority Critical patent/JP3866296B2/ja
Priority to DE19880298T priority patent/DE19880298T1/de
Publication of WO1998034156A1 publication Critical patent/WO1998034156A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
    • B41M5/506—Intermediate layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/775—Photosensitive materials characterised by the base or auxiliary layers the base being of paper
    • G03C1/79—Macromolecular coatings or impregnations therefor, e.g. varnishes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/406—Bright, glossy, shiny surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2317/00—Animal or vegetable based
    • B32B2317/12—Paper, e.g. cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
    • B41M5/508—Supports

Definitions

  • the present invention relates to a support for image materials, and more particularly, to a paper substrate containing natural pulp as a main component, the surface of which is provided with an image forming layer, which is coated with a multilayer resin sheet.
  • the present invention relates to a support for an image material, which can be provided, has improved releasability from a cooling roll at the time of production of the support, does not cause uneven peeling, has good curl physical properties, and can be produced at high speed and stably. Background art
  • the image material is composed of an image material support and an image forming layer provided on the support.
  • an image material support for example, silver halide photographic materials, ink jet recording materials, heat transfer type thermal transfer recording image-receiving materials, heat-sensitive recording materials, photosensitive heat-sensitive recording materials, etc. Layer, a heat transfer type thermal transfer recording image receiving layer, an image forming layer such as a thermosensitive coloring layer, a photosensitive thermosensitive coloring layer and the like, and an undercoat layer, a protective layer and the like as required.
  • the silver halide photographic constituent layers include a silver halide photographic emulsion layer, a protective layer, an undercoat layer, an intermediate layer or a color mixing prevention layer, an antihalation layer, or a film layer, an ultraviolet absorbing layer, and the like. It is composed of a combination of
  • a single silver halide photographic material has a silver halide photographic emulsion layer and a protective layer provided on a photographic material support.
  • the multilayer silver halide color photographic material comprises an undercoat layer, a blue-sensitive silver halide photographic emulsion layer and an intermediate layer, a green-sensitive silver halide photographic emulsion layer and an ultraviolet-absorbing layer on a photographic material support.
  • a silver halide photographic emulsion layer and a protective layer and other silver halide silver halide photographic constituent layers are provided in this order and arranged in multiple layers.
  • a resin-coated paper-type support in which a base paper surface for an image material support is coated with a thermoplastic resin is well known.
  • a technique for a photographic material support in which a base paper is coated with a resin having a film forming ability, preferably a polyolefin resin I have.
  • a technique for a photographic material support in which both sides of a base paper are coated with a polyolefin resin are also known.
  • the resin layer on the side where one of the image forming layers is provided usually contains a titanium dioxide pigment in order to impart sharpness.
  • thermo transfer recording image receiving element having a support made of a resin-coated paper having a resin coating having a surface roughness of 7.5 microinch-AA or less, especially a polyethylene resin-coated paper in which the base paper is coated with a polyethylene resin, has been proposed.
  • Japanese Patent Application Laid-Open No. 63-307979 discloses a technique relating to an ink jet recording sheet having a resin-coated paper as a support.
  • a resin-coated paper-type image material support in which the side on which the image forming layer is provided of a base paper, particularly a base paper mainly composed of natural pulp, is coated with a resin layer still has some serious problems. In fact, there are problems and no satisfactory results have yet been obtained.
  • the side of the base paper on which the image forming layer is provided (hereinafter, the side on which the image forming layer is provided is the front side, the resin layer coated on the front side is the front resin layer, the opposite side is the back side, and the resin layer coated on the back side is Is sometimes referred to as a backing resin layer.)
  • a resin-coated paper for use as a support for image materials in which at least the surface is covered with a resin layer containing a thermoplastic resin, particularly a polyethylene-based resin, is usually placed on a running base paper. Using a melt extruder, the polyethylene resin composition is cast from the slit die into a film and coated, pressed between a pressure roll and a cooling roll, and separated from the opening after cooling.
  • the present inventors have conducted various studies on the factors of the apparent glossiness of the image material and its print, and found that factors affecting the apparent glossiness include resin-coated paper as a support, an image forming layer, and a developing agent. Although there are various factors such as image forming methods such as processing, it has been found that the apparent glossiness of the image material and its print is greatly affected by the factors of the resin-coated paper as the support. Then, the present inventors further examined various factors of the resin-coated paper on the apparent glossiness, and as a result, the apparent glossiness of the image material and its print depended on the factors of the resin layer and the natural pulp was used.
  • Factors such as the type and properties of the base paper used as the main component, such as the type of natural pulp, fiber length, stock slurry conditions such as paper additives contained in the stock slurry, papermaking speed, strain pressing, and machine calender conditions It depends on various factors such as papermaking conditions such as the size press, post-processing conditions such as the size press and tab size press, and the surface roughness of the base paper.
  • papermaking conditions such as the size press
  • post-processing conditions such as the size press and tab size press
  • the surface roughness of the base paper As the thickness of the surface resin layer of the resin-coated paper becomes thinner, particularly when the thickness is 31 / zm or less, the apparent glossiness of an image material using the resin-coated paper as a support and the appearance of the print thereof are reduced. It turned out to be significantly lower.
  • photographic materials for single-use glossy require a high degree of glossiness in photographic prints, and photographic materials with poor glossiness in photographic prints are completely unsuitable for glossy use. There was a problem that the
  • resin coated paper for image materials for glossy applications requires a high degree of smoothness, but the thicker the surface resin layer becomes, especially when extruding and coating the molten resin on the base paper
  • the production speed of the resin-coated paper is higher than 20 zm or more, especially at 20 Om / min or more, the releasability of the resin-coated paper from the cooling rolls deteriorates, This is the occurrence of horizontal width-wise unevenness called peeling unevenness on the coated paper surface.
  • peeling unevenness occurs, an image material using the resin-coated paper as a support
  • gloss and unevenness occurred in the materials and prints, and the glossiness of the appearance was further reduced, and the commercial value was significantly reduced.
  • the two-layer extrusion coating method of coextrusion coating method and sequential extrusion coating method prevents clay-like pores that tend to occur on the surface resin layer surface of coated paper type photographic supports
  • resin-coated paper is used as the support. It was extremely inadequate to improve and improve the apparent glossiness of the image material and its print.
  • the resin-coated paper is pressed between two or more rolls including a metal roll in contact with the resin-coated surface, which is kept at a specific temperature and pressure, to improve surface smoothness.
  • Techniques for obtaining good resin-coated paper are known. However, even when using this technique, the resin-coated surface loses heat and blocks, resulting in poor surface smoothness. In addition, there is no effect when trying to avoid heat loss. It was extremely insufficient to improve and improve the apparent glossiness of an image material having a paper support and its print.
  • the first coating layer is formed mainly of a low-density polyethylene resin
  • the second coating layer is formed of a polymer having a high rigidity modulus.
  • the technology for providing coated paper type photographic supports is known, and polymers having high rigidity modulus include high-density polyethylene (HDPE), polypropylene (PP), polycarbonate (PC), and linear low-density polyethylene.
  • Polyamides such as (LLDPE), nylon 11, nylon 6, and nylon 66, and polyesters such as polyethylene terephthalate (PET) and polybutylene terephthalate (PBT) are exemplified.
  • LLDPE high-density polyethylene
  • PET polyethylene terephthalate
  • PBT polybutylene terephthalate
  • JP-A-7-120868 discloses that at least two water-resistant resin coating layers are provided, and the density of the water-resistant resin in the layer farthest from the base paper is made higher than the density of the water-resistant resin in the other layers.
  • Japanese Patent Application Laid-Open No. 7-168308 discloses that a water-resistant resin coating layer has at least two layers and that the outermost water-resistant resin has a specific flexural modulus, thereby A technology for a resin-coated paper-type photographic printing paper support in which the adhesiveness between paper and a water-resistant resin layer and the releasability from a cooling roll are improved has been disclosed. It was also extremely insufficient to improve and improve the apparent glossiness of an image material having a paper support and its print.
  • a resin-coated paper using these techniques and an image material using the resin-coated paper as a support have a problem that the physical properties of force are deteriorated. That is, when a high-density water-resistant resin is used as the water-resistant resin in the coating layer, the higher the density is, the higher the content of the water-resistant resin in the coating layer is, the more the resin becomes.
  • the coated paper and the image material using the resin-coated paper as a support have a problem that the physical properties of the polyester are deteriorated. Disclosure of the invention
  • the present invention provides a support for an image material in which the front side of a paper substrate mainly composed of natural pulp is coated with a resin layer, which has a high apparent gloss and
  • the peelability from the cooling roll during the production of the support has been improved, and no uneven peeling has occurred, and the curl physical properties are good, and high-speed and stable production can be achieved. It is an object of the present invention to provide a support for an image material which is excellent in productivity and economy.
  • the present inventors have conducted intensive studies to develop a support for image materials having the above-mentioned preferable properties, and as a result, the front side of a paper substrate mainly composed of natural pulp was coated with a multilayer resin sheet.
  • the upper layer of the multilayer resin sheet contains a certain percentage or more of a thermoplastic resin (a) having a specific melting point
  • the lower layer contains a thermoplastic resin (b) having a specific melting point
  • the upper layer and the lower layer in the multilayer resin sheet have the same configuration as above, and after the multilayer resin sheet is covered on a paper substrate, the multilayer resin sheet is (3)
  • the upper layer of the multi-layer sheet contains more thermoplastic resin (c) than the lower layer, and the lower layer contains thermoplastic resin (d) than the upper layer. Highly contained, the melting point of the thermoplastic resin (c) is higher than the melting point of the thermoplastic resin (d), and after coating the multilayer resin sheet on a paper substrate, pressing the multilayer resin sheet while holding the heat Is suitable for the purpose
  • the inventors have found that the present invention can be performed, and have completed the present invention based on this finding. That is, the present invention
  • a support for an image material comprising a paper mainly composed of natural pulp as a substrate, and a surface of the paper substrate on which an image forming layer is provided, covered with a multilayer resin sheet.
  • the upper layer [surface layer] contains at least 40% by weight of a thermoplastic resin (a) having a melting point higher than 100 ° C and the lower layer [one or more layers below the surface layer] (B ) Contains a thermoplastic resin (b) having a lower melting point than the above-mentioned thermoplastic resin (a) at 105 ° C or lower, and optionally contains the thermoplastic resin (a) and the thermoplastic resin in the upper layer (A).
  • a support for an image material (hereinafter referred to as an image material support) characterized in that it is contained in an amount smaller than the content of the resin (a) and that the multilayer resin sheet is coated on a paper substrate and then pressed in a non-heated state. It may be referred to as support 1.)
  • An image material support comprising a paper mainly composed of natural pulp as a substrate, and a surface of the paper substrate on which an image forming layer is provided, covered with a multilayer resin sheet.
  • the upper layer [surface layer] (A) contains not less than 40% by weight of a thermoplastic resin (a) having a melting point higher than 100 ° C and the lower layer [surface layer]
  • One or more layers] (B) contains a thermoplastic resin (b) having a melting point lower than that of the above-mentioned thermoplastic resin (a) at 105 ° C or lower, and optionally contains a thermoplastic resin (a), Containing the thermoplastic resin (a) in the upper layer (A) in an amount smaller than that of the thermoplastic resin (a), and coating the multilayer resin sheet on a paper substrate, and then holding the heat on the multilayer resin sheet side.
  • the image material support characterized in that it has been pressed against hereinafter referred to as the image material support 2). -Sometimes referred to as-. ) , and
  • a support for an image material wherein a paper mainly composed of natural pulp is used as a substrate, and a surface of the paper substrate on which an image forming layer is provided is coated with a multilayer resin sheet.
  • the upper layer [surface layer] (C) contains more thermoplastic resin (c) than the lower layer [one or more layers below the surface layer] (D), and the lower layer (D) contains thermoplastic resin (C).
  • d) is contained more than the upper layer (C), the melting point of the thermoplastic resin (c) is higher than the melting point of the thermoplastic resin (d), and the multilayer resin sheet is placed on a paper substrate. After being covered, the multilayer resin sheet is pressed against the side of the multilayer resin sheet in a state of retaining heat (hereinafter, may be referred to as image material support 3).
  • the support for image material of the present invention (hereinafter, may be simply referred to as support) 1, 2 and 3 each have a front surface of a paper substrate covered with a multilayer resin sheet.
  • the configuration of the multilayer resin sheet of the second and the second is the same.
  • the multilayer resin sheets in the supports 1 and 2 can be divided into an upper layer, that is, a surface layer (A), and a lower layer, that is, one or more layers (B) below the surface layer.
  • a thermoplastic resin
  • various thermoplastic resins can be used as long as the melting point is higher than 100 ° C. Meltov's monolate, molecular weight and molecular weight distribution can be used alone or in combination.
  • the melting point referred to in the present specification refers to a so-called DSC method melting point of a thermoplastic resin before being processed into a support for an image material, measured by a differential scanning calorimeter.
  • thermoplastic resin ( a ) used in the practice of the present invention may be any resin as long as its melting point is higher than 100 ° C.
  • the melting point is preferably higher than 105 ° C, more preferably 110 ° C or higher, still more preferably 115 ° C or higher.
  • thermoplastic resin (a) used in the practice of the present invention is 100 ° C. or less, a highly visible glossy product aimed at by the present invention cannot be obtained, and uneven peeling may occur. It is easy to occur.
  • thermoplastic resin (a) a polyethylene resin is preferably used.
  • polyethylene resins include a polyethylene resin polymerized and produced by a high-pressure method, a polyethylene resin polymerized and produced using a methyl alcohol polymerization catalyst, and a polyethylene resin produced by polymerization using a metal catalyst other than a metallocene polymerization catalyst. Examples thereof include resins and mixtures thereof.
  • thermoplastic resin (a) polyethylene resins polymerized and produced by a high-pressure method preferably used in the practice of the present invention include long chains produced by a high-pressure production method using an autoclave reactor, a tubular reactor, or the like.
  • various density of a melt Furore one preparative molecular weight can be used those having a molecular weight distribution, typically, density 0. 9 0 ⁇ 0. 9 5 g / cm 3 , preferably in the range density 0 ⁇ 9 2 4 ⁇ 0 9 5 g / cm 3 range, the melt flow rate is 0:..!. ⁇ 5 0 g / 10 min, preferably a melt flow rate 0 4 ⁇ 5 0 g / 10 Can be used alone or in combination of two or more.
  • the melt flatness of the polyethylene resin is specified in accordance with JISK 670 “Polyethylene test method”.
  • thermoplastic resin (a) polyethylene resins polymerized and produced using a meta-mouth polymer catalyst preferably used in the practice of the present invention include JP-A-3-502710, JP-A-60-35006. As disclosed in JP-A-63-501369, JP-A-3-234717, JP-A-3-234718, and the like, a zirconium-based or hafnium-based meta-opening, It is produced by polymerization using a combination of methylaluminoxane and the like with enhanced catalytic activity as a polymerization catalyst.
  • polyethylene resins produced by polymerization using these meta-opening polymerization catalysts include low-density polyethylene resin, medium-density polyethylene resin, high-density polyethylene resin, 1-1 Linear low-density polyethylene resin, ethylene-based copolymers with olefins such as propylene and butylene, carboxy-modified polyethylene resins, etc.
  • molecular weight can be used those having a molecular weight distribution, typically in the range of density of 0.9 10 ⁇ 0.97g / cm 3, preferably in the range of 0.9 1 5 ⁇ 0.97g / cm 3, particularly preferably density 0.920 ⁇ 0.97g / cm 3 , and a melt flow rate in the range of 0.05 to 50 Og / 10 min, preferably 0.08 to 30 Og / 10 min, can be used alone or as a mixture of two or more.
  • thermoplastic resin (a) examples of the polyethylene resin produced by polymerization using a metal polymerization catalyst other than the meta-opening polymerization catalyst preferably used in the practice of the present invention include a zigzag method, a Philips method and the like. Various types of polyethylene-based resins polymerized and produced by using them can be exemplified.
  • polyethylene resins polymerized and produced using metal polymerization catalysts other than those metal metacene catalysts include ultra-low-density polyethylene resin, low-density polyethylene resin, medium-density polyethylene resin, high-density polyethylene resin, and linear Low-density polyethylene resin, ethylene-based copolymers with propylene, butylene, etc., and carboxy-modified polyethylene resins, and mixtures thereof, with various densities, melt flow rates, molecular weight, can be used those having a molecular weight distribution, typically in the range of density 0.87 ⁇ 0.97g / cm 3, preferably in the range density of 0.905 ⁇ 0.97 g / cm 3, more preferably the density is 0.9.
  • thermoplastic resin (a) a polyester resin, a polycarbonate resin, or a mixture thereof can be used as the thermoplastic resin (a).
  • a polycarbonate-based resin has a softening point and is equivalent to the melting point of another resin.
  • Polyester resins used in the practice of the present invention include poly It is a polyester resin, a polybutylene terephthalate resin, a polyester-based biodegradable resin, a mixture thereof or a mixture thereof with a polyethylene resin, and various densities and intrinsic viscosities [] can be used.
  • a polyester resin manufactured by Mitsubishi Kasei Corporation (trade name: NO VAPEX HS004, melting point 235 ° C, density 1.33 g / cm 3 , intrinsic viscosity [77] 0.73 dl / g).
  • a mixture of a polyester resin and a polyethylene resin can be advantageously used.
  • a mixture of a copolymerized polyethylene terephthalate resin and a copolymerized polyethylene resin (melting point: 74 ° C) graft-modified with maleic acid (melting point: 224 ° C, manufactured by Mitsubishi Chemical Corporation) can be given.
  • polycarbonate resin used in the practice of the present invention various grades can be used.
  • a polycarbonate resin (trade name: manufactured by Mitsubishi Chemical Corporation) NOVAREX 7022A, density 1.2 Og / cm 3 , melt flow rate 12-16 g / 10 min, softening point 160 ° C-190 ° C).
  • thermoplastic resin used in the practice of the present invention from the viewpoint of further improving the apparent glossiness and peeling unevenness of the image material and its print, and further from the viewpoint of improving the moldability of the resin composition, the thermoplastic resin used in the practice of the present invention.
  • a resin composition comprising a low-density polyethylene resin and a high-density polyethylene resin is more preferable.
  • the low-density polyethylene resin those having the above-mentioned various production methods, density, melt flatness, molecular weight, and molecular weight distribution can be used, and low-density polyethylene resin polymerized and produced by a high-pressure method is preferable.
  • the low density polyethylene resin density, 0 is .90 ⁇ 0.95g / cm 3 in the range of what is advantageous, preferably in the range density of .918-.930 g / cm 3, the density Is more preferably in the range of 0.924 to 0.93 Og / cm 3 .
  • the high-density polyethylene resin those having various production methods, density, melt flatness, molecular weight, and molecular weight distribution as described above can be used, and those having a density in the range of 0.95 to 0.97 g / cm 3 are preferable. Those having a density in the range of 0.960 to 0.97 g / cm 3 are more preferable.
  • the content ratio of the high-density polyethylene resin is determined based on the total thermoplastic resin component in the upper layer (A). 15 --The amount is preferably not less than 20%, more preferably 20 to 75% by weight, and particularly preferably 25 to 65% by weight.
  • thermoplastic resin (b) used as an essential component in the lower layer (B) a resin having a melting point of 105 ° C. or lower and a melting point lower than that of the thermoplastic resin (a) is used.
  • thermoplastic resin ⁇ 1 various is available, from the viewpoint of the effect of improving the gloss of the image material and appearance of the print, is preferably the following 100 ° C its melting point, the following 95 ° C Is particularly preferred. Further, those having various densities, melt flow rates, molecular weights, and molecular weight distributions can be used alone or in combination.
  • Polyethylene resin is preferably used as the thermoplastic resin ⁇ (b).
  • polyethylene resins examples include polyethylene resins produced using a metallocene polymerization catalyst, polyethylene resins produced using a metal catalyst other than a metallocene polymerization catalyst, and mixtures thereof. it can. Among them, a polyethylene resin produced by polymerization using a methacrylic acid polymerization catalyst is particularly preferred. In addition, ultra-low density polyethylene resin, low density polyethylene resin, linear low density polyethylene resin, copolymers of ethylene with olefins such as propylene and butylene, and carboxy-modified polyethylene resins, and the like.
  • the mixture is a mixture having a melting point of 105 ° C or lower and lower than that of the thermoplastic resin (a), those having various densities, melt velocities, molecular weights, and molecular weight distributions can be used.
  • thermoplastic resin (b) polyethylene resins produced by polymerization using a metallocene polymerization catalyst particularly preferably used in the practice of the present invention include JP-A-3-502710 and JP-A-60-35006. As disclosed in JP-T-63-501369, JP-A-3-234717, JP-A-3-234718, etc., it is preferable to use a zirconium-based or hafdium-based meta-opening. It is produced by polymerization using a catalyst with enhanced catalytic activity in combination with methylaluminoxane or the like as a polymerization catalyst.
  • the density is 0.87 to 0.92 g / cm 3 , It is preferably in the range of 0.890 to 0.91 Og / cm 3 , particularly preferably in the range of 0.890 to 0.905 g / cm 3 , and the melt rate is 0.0.
  • thermoplastic resin (a) and the thermoplastic resin (b) used in the practice of the present invention are used in combination with two or more polyethylene resins having different melting points or melt flow rates
  • the two resins used in combination are used.
  • a compound resin composition prepared by previously melting and mixing at least one kind of polyethylene resin is preferable.
  • a polyethylene resin having a melt flow rate of 5 to 4 Og / 10 minutes and a polyethylene resin having a melt flow rate of 0.2 to 4.5 g / 10 minutes are used in combination, It is preferably used as a compound tree composition prepared by melting and mixing in advance.
  • the use of the compound resin prepared in this manner is preferable in terms of moldability and film uniformity, and in preventing non-uniform resin agglomeration called resin gel.
  • Various methods can be used to prepare the compound resin composition. For example, using a kneading extruder, a heating roll kneader, a Banbury mixer, a pressurized die, etc., two or more types of polyethylene resins, and if necessary, other thermoplastic resins, antioxidants, release agents
  • a method of adding various additives such as a molding agent, melting and mixing, and then pelletizing the mixture is advantageously used.
  • the upper layer (A) in the present invention indicates a surface layer in the multilayer resin sheet, and the lower layer (B) indicates one or more layers below the surface layer.
  • a multilayer resin sheet having a two-layer structure composed of a lower layer (B) and a single layer is preferred, and a multilayer resin sheet having a two-layer structure is particularly preferred.
  • the content ratio of the thermoplastic resin (a) used in the upper layer (A) is determined as follows. It is preferably at least 40% by weight, particularly preferably at least 50% by weight, based on the thermoplastic resin component.
  • the upper layer (A) contains the thermoplastic resin (b)
  • its content is preferably smaller than the content of the thermoplastic resin (b) in the lower layer (B).
  • the content of the thermoplastic resin (b) used in the lower layer (B) is preferably at least 20% by weight based on the total thermoplastic resin component in the lower layer, More preferably, more preferably 40% by weight or more, even more preferably 50% by weight or more, still more preferably 60% by weight or more, and particularly preferably 70% by weight or more.
  • the lower layer (B) may optionally contain the thermoplastic resin (a) in an amount smaller than the content of the thermoplastic resin (a) in the upper layer (A).
  • thermoplastic resin (a) and thermoplastic resin (b) as long as the requirements of the present invention are satisfied without impairing the effects of the present invention.
  • a homopolymer such as polyethylene resin, polybutene, and polypentene; a copolymer of two or more monoolefins such as ethylene-butylene copolymer; and a polyester resin.
  • the present invention from the viewpoint of improving the moldability of the resin composition for the lower layer containing the thermoplastic resin (b), and from the viewpoint of improving the desired properties of the support for the image material, It is preferable to include a polyethylene resin polymerized and produced by a high-pressure method.
  • a polyethylene resin polymerized and produced by the high-pressure method as described above is useful, but a low-density polyethylene resin polymerized and produced by the high-pressure method is more preferable, and the density is 0.918 to 0.93 Og / cm 3.
  • those having a density in the range of 0.918 to 0.926 g / cm 3 are particularly preferable.
  • melt flow as a total of resin components in the upper (A) and lower (B) resin layers containing the thermoplastic resin (a) and the thermoplastic resin (b), respectively, used in the practice of the present invention.
  • the rate is not particularly limited, thermoplastic resin, which is a particularly preferred embodiment of the present invention, is preferred from the viewpoints of melt extrusion coating properties of the resin composition, moldability, and the effect of improving the apparent glossiness.
  • the melt flow rate is preferably in the range of 2 to 15 g / 10 minutes, and more preferably in the range of 3 to 10 g / 10 minutes.
  • the surface of the base paper on which the image forming layer is provided is covered with at least two layers of a multilayer resin sheet comprising the upper layer (A) and the lower layer (B).
  • a calendar treatment using a calender using rolls of various materials is preferable, and a soft calendar treatment using a soft calender is more preferable.
  • the treatment is carried out between two or more rolls including at least one metal roll.
  • a soft calender treatment using a soft calender device in which one roll other than the metal opening is a rubber-coated roll is particularly preferable.
  • the hardness of the rubber-coated roll is preferably from 40 to 100 Shore hardness, and particularly preferably from 50 to 80 Shore hardness.
  • the press linear pressure during calendering is preferably 7.5 to 55 kgf / cm, particularly preferably 15 to 45 kgf / cm.
  • the number of treatments may be one, but it can be carried out many times depending on the degree of effect. At this time, it is also a preferred embodiment of the present invention that the pressing in a non-heated state is performed in two or more lines.
  • the image material support 2 of the present invention has a surface on the side of the base paper on which the image forming layer is provided, and the upper layer (A) After being covered with at least two layers of the multilayer resin sheet comprising the lower layer (B), the multilayer resin sheet is pressed against the side of the multilayer resin sheet while maintaining heat.
  • a heat calendering treatment using a heat calendering device using rolls of various materials is preferable, and a heat soft calendering treatment using a heat soft calendering device is particularly preferable.
  • the surface temperature is between 40 ° C. and 150 ° C., preferably between 40 ° C. and 120 ° C. C, particularly preferably between two or more rolls including at least one metal roll at 50 ° C to 90 ° C.
  • thermal soft calendering treatment using a thermal soft calendering device in which one roll other than the metal roll is a rubber-coated roll is particularly preferred.
  • the hardness of the rubber-coated roll is preferably from 40 to 100 Shore hardness, and particularly preferably from 50 to 80 Shore hardness.
  • the linear pressure of the press during the heat calendering treatment is preferably 3 to 45 kgf / cm, more preferably 4 to 35 kgf / cm, and particularly preferably 5 to 5 kgf / cm. ⁇ 25 kgf / cm.
  • it is also effective to perform processing in a so-called plain state, in which the processing is performed only by the weight of the press roll and the tension of the paper without applying a load as the press linear pressure.
  • the number of heat treatments may be one, but many times depending on the degree of effect. In this case, it is also a preferred embodiment of the present invention that the pressure welding while maintaining the heat is performed in two or more lines.
  • the present invention can have still another feature.
  • the heat whose melting point is preferably higher than 105 ° C, more preferably 110 ° C or higher, still more preferably 115 ° C or higher, and particularly preferably 120 ° C or higher By providing an upper layer containing the plastic resin (a), an image material having a high apparent gloss and an image material support capable of providing a print thereof can be obtained even when a thermal calendar treatment is performed at a relatively low temperature. It is.
  • the heat calendering treatment can be performed at a relatively low temperature, a support for an image material can be obtained which does not cause blocking and therefore does not cause uneven peeling.
  • calendar treatment in a non-heated state or at a relatively low temperature Since it is possible to perform heat-calendering in one place, it does not cause blocking. That is, stable production is possible.
  • the present invention has another very favorable advantage.
  • the upper layer preferably contains a high-density polyethylene resin from the viewpoint of further improving the apparent glossiness and peeling unevenness of the image material and its print.
  • a high-density polyethylene resin from the viewpoint of further improving the apparent glossiness and peeling unevenness of the image material and its print.
  • the more the high-density polyethylene resin is included in the resin layer the more the image material support, and further the image material and the print physical properties of the image material. There was a problem that the deterioration was remarkable.
  • the thermoplastic resin (b) in the lower layer has a low melting point and preferably a low density, usually a density of 0.87 to 0.92 g / cm 3 ,
  • a polyethylene resin in the range of 0.890 to 0.910 g / cm 3 , particularly preferably 0.890 to 0.905 g / cm 3 is used.
  • the present invention has the advantage of being able to provide a support for an image material having very good curl physical properties, and hence an image material having very good curl physical properties and a print thereof.
  • the multilayer resin sheet in the support 3 can be divided into an upper layer, that is, a surface layer (C) and a lower layer, that is, one or more layers (D) below the surface layer.
  • thermoplastic resin (c) used as an essential component various thermoplastic resins may be used as long as the melting point is higher than the melting point of the thermoplastic resin (d) used as an essential component in the lower layer (D).
  • a resin can be used, but a resin having a melting point of 115 ° C or more is preferable. Also, those having various densities, melt flow rates, molecular weights, and molecular weight distributions can be used alone or in combination.
  • thermoplastic resin (c) a polyethylene resin is preferably used as such a thermoplastic resin (c).
  • This polyethylene resin is as described in the above-mentioned thermoplastic resin (a).
  • thermoplastic resin (c) a polyester resin, a polycarbonate resin, or a mixture thereof can be used as the thermoplastic resin (c).
  • This polyes -The telluric resin and the polycarbonate resin are as described in the thermoplastic resin (a) above.
  • the thermoplastic resin (c) used in the practice of the present invention has a melting point of 115 ° C. or more from the viewpoint of improving the apparent glossiness and peeling unevenness of the image material and its print. Preferably, it is more preferably at least 120 ° C, particularly preferably at least 125 ° C. That is, if the melting point of the thermoplastic resin (c) used in the practice of the present invention is too low, it is difficult to obtain a product having a high apparent glossiness aimed at by the present invention, and uneven peeling tends to occur. .
  • thermoplastic resin (d) used as an essential component various thermoplastic resins having a melting point lower than that of the thermoplastic resin (c) may be used.
  • the melting point is 5 ° C or more lower than the melting point of the thermoplastic resin (c), more preferably 10 ° C or more, from the viewpoint of improving the apparent glossiness.
  • those lower by 15 ° C or more are still more preferable, and those lower by 20 ° C or more are particularly preferable.
  • those having a melting point of 125 ° C or less are preferred, those having a melting point of 120 ° C or less are more preferred, and those having a melting point of 115 ° C or less are particularly preferred.
  • those having various densities, melt flow rates, molecular weights, and molecular weight distributions can be used alone or in combination.
  • a polyethylene resin is preferably used as such a thermoplastic resin (d).
  • examples of such polyethylene resins include a polyethylene resin polymerized and produced by a high-pressure method, a polyethylene resin polymerized and produced using a methyl alcohol polymerization catalyst, and a polyethylene resin produced by polymerization using a metal catalyst other than a metallocene polymerization catalyst. Examples thereof include resins and mixtures thereof. Among them, a polyethylene-based resin polymerized and produced by a high-pressure method is preferable.
  • ultra-low density polyethylene resin low density polyethylene resin, medium density polyethylene resin, linear low density polyethylene resin, copolymers of ethylene with propylene, butylene, etc., or carboxy-modified polyethylene resin And mixtures thereof, and those having various melting points, melt flow rates, molecular weights, and molecular weight distributions can be used as long as the melting point is lower than the melting point of the thermoplastic resin (c).
  • thermoplastic resin (d) a high-pressure method preferably used in the practice of the present invention is used.
  • -Polyethylene resins produced by polymerization include various types of polyethylene resins having long-chain branching by a high-pressure production method using a photoclave type reactor, a tubular type reactor and the like.
  • Polyethylene resins polymerized and produced by these high-pressure methods include low-density polyethylene resins, medium-density polyethylene resins, copolymers of ethylene with propylene, butylene, and other monoolefins, and carboxy-modified polyethylene resins.
  • various density of a melt Furore over preparative molecular weight can be used those having a molecular weight distribution, typically, density 0. 9 0 ⁇ 0. 9 5 g / cm 3 , preferably in the range Density ranges from 0.90 to 0.93 Og / 10 minutes, melt flow rate from 0.1 to 50 g / 10 minutes, preferably from 0.4 to 5 O g / 10 minutes can be used alone or in combination of two or more.
  • the thermoplastic resin (c) used in the practice of the present invention has a melting point of preferably at least 115 ° C, more preferably at least 120 ° C, from the viewpoint of improving the apparent glossiness and peeling unevenness.
  • a polyethylene resin having a melting point lower than the melting point of the resin used as the main component preferably a polyethylene resin having a melting point lower than 125 ° C.
  • a resin composition mixed with a resin is advantageously used.
  • the resin composition a compound resin composition prepared by melting and mixing in advance is preferable. The use of the compound resin prepared in this manner is preferable in terms of moldability and film uniformity and in preventing non-uniform resin agglomeration called resin gel.
  • thermoplastic resin composition Various methods can be used to prepare the compound resin composition. For example, using a kneading extruder, a heated roll kneader, a Banbury mixer, a pressurized whisk, etc., two or more types of polyethylene-based resins, and if necessary, other thermoplastic resins and antioxidants A method of adding various additives such as a release agent and melting and mixing, and then pelletizing the mixture is advantageously used. In the practice of the present invention, it is preferable to use a mixture of thermoplastic resins having different physical properties in advance by melting and mixing them in advance.
  • melt flow rate of the polyethylene resin used is 5 to 4 Og / 10 minutes, and the melt flow rate of the polyethylene resin used in combination is When the rate is 0.2 to 4.5 g / l0 min, it is particularly preferable to use a compound resin composition prepared by melting and mixing in advance.
  • the upper layer (C) contains more thermoplastic resin (c) than the lower layer (D), and the lower layer (D) contains more thermoplastic resin (d) than the upper layer (C). It is necessary to contain.
  • the content of the thermoplastic resin (c) in the upper layer (C) and the content of the thermoplastic resin (d) in the lower layer (D) are different from the viewpoint of the apparent glossiness and the effect of improving the peeling unevenness. , 50% by weight or more, more preferably 60% by weight or more, particularly preferably 70% by weight or more.
  • thermoplastic resin (c) and thermoplastic resin (d) as long as the requirements of the present invention are satisfied without impairing the effects of the present invention.
  • a homopolymer such as polyethylene resin, polybutene, and polypentene; a copolymer of two or more of hyorefins such as an ethylene-butylene copolymer; and a polyester resin.
  • melt opening as a total of resin components in the upper (C) and lower (D) resin layers containing the thermoplastic resin (c) and the thermoplastic resin (d) used in the practice of the present invention.
  • the rate is not particularly limited, but it is a particularly preferred embodiment of the present invention in view of the melt extrusion coating property of the composition, the formability and the effect of improving the apparent glossiness.
  • the thermoplastic resin is a polyethylene resin
  • the melt mouth opening rate is preferably in the range of 2 to 15 g / 10 minutes, and more preferably in the range of 3 to 1 Og / 10 minutes.
  • the surface of the base paper on which the image forming layer is provided is covered with at least two layers of a multilayer resin sheet comprising the upper layer (C) and the lower layer (D). It is manufactured by being pressed against the multilayer resin sheet while holding heat.
  • a heat calendering apparatus using rolls of various materials, and to use a heat calendering apparatus. --Thermal soft calendering is particularly preferred.
  • Preferred embodiments of the thermal power rendering treatment of the invention include a surface temperature of 50 ° C. to 150 ° C., preferably 55 ° C. to 100 ° C., Particularly preferably, the treatment is performed between two or more holes including at least one metal roll at 60 ° C to 90 ° C.
  • the temperature at the time of performing the heat calendering treatment is usually 50 ° C. to 150 ° C., but the thermoplastic resin (c ) And the melting point of the resin layer containing the thermoplastic resin (d).
  • a heat soft calendering treatment using a heat soft calendering device in which one roll other than the metal roll is a rubber-coated roll is particularly preferable.
  • the hardness of the rubber-coated roll is preferably from 40 to 100 Shore hardness, and particularly preferably from 50 to 80 Shore hardness.
  • the press linear pressure at the time of performing the heat calendering treatment is preferably 3 to 45 kgf / cm, more preferably 4 to 35 kgf / cm, and particularly preferably 5 to 5 kgf / cm. ⁇ 25 kgf / cm.
  • it is also effective to perform processing in a so-called plain state, in which the processing is performed only by the weight of the press roll and the tension of the paper without applying a load as the press linear pressure.
  • the number of heat treatments may be one, but many times depending on the degree of effect. In this case, it is also a preferred embodiment of the present invention that the pressure welding while maintaining the heat is performed in two or more lines.
  • the present invention can have another feature.
  • the back surface of the base paper of the image material support of the present invention is preferably coated with a resin having film forming ability.
  • Thermoplastic resins such as polyolefin resin, polycarbonate resin, polyester resin and polyamide resin are preferred as the resin having such film forming ability, and among them, polyolefin resin is more preferred in view of melt extrusion coating property, and polyethylene is more preferred.
  • a system resin is particularly preferred. Further, it may be coated with an electron beam curing resin described in JP-B-60-17104.
  • the multilayer resin sheet on the front side of the image material support in the present invention may have a two-layer structure or a multilayer structure having more layers, but the two-layer structure efficiently achieves the object of the present invention.
  • the support for an image material in the present invention is produced by a so-called melt extrusion coating method in which a resin composition that has been heated and melted is cast and coated on a running base paper. At that time, the so-called co-extrusion coating method in which two or more resin layers on the front side of the image material support are extrusion-coated at the same time may be used.
  • a so-called sequential extrusion coating method in which the layers and then the resin layers are sequentially melt-extruded and coated at different stations, may be used.
  • a support for the image material manufactured by using the sequential extrusion coating method is particularly preferable.
  • at the time of successive extrusion coating at least the lowermost resin layer may or may not be subjected to activation treatment such as corona discharge treatment.
  • the slit die is preferably a T-type die, an L-type die, or a flat die of a fish-til type die, and the slit opening diameter is desirably 0.1 to 2 thighs.
  • the type of the multilayer co-extrusion die may be any of a feed block type, a multi-manifold type, a multi-slot type, and the like.
  • the temperature of the molten film is 280 to 34 ° C. In this case, a temperature difference between the resin composition for the uppermost layer and the resin composition constituting the resin layer below the uppermost layer may be provided. For example, by lowering the temperature of the resin composition for the uppermost layer by 5 to 10 ° C lower than the temperature of the resin composition constituting the lower resin layer, the removability of the resin layer from the cooling port is reduced. Can be improved.
  • the coating thickness of the surface multilayer resin sheet of the image material support in the present invention is advantageously in the range of 8 to 1001111, preferably in the range of 12 to 60 / m, and is preferably in the range of 18 to The range of 4 is particularly preferred. Further, in the case of a multilayer structure in which a resin layer composed of a lower layer and an upper layer and a resin layer composed of at least an uppermost layer, which is a particularly preferred support for an image material in the present invention, is sequentially melt-extruded and coated, the lower layer
  • the thickness of the resin layer is preferably 25% or more, more preferably 40%, of the thickness of the multilayer resin sheet from the viewpoint of improving the apparent glossiness and peeling unevenness of the image material and its print.
  • the above thickness is more preferable, and the thickness of 50% or more is particularly preferable, but is not particularly limited.
  • the back side of the base paper is preferably coated with a back resin layer mainly composed of a resin having film forming ability, but the resin is preferably a polyethylene-based resin, and the coating thickness of the front-side multilayer is It is preferable to set appropriately within a range that balances the resin sheet, and particularly the force balance. In general, a range of 8 to 100 zm is advantageous, but a range of 12 to 60 / m is preferable.
  • an activation treatment such as a corona discharge treatment or a flame treatment on the base paper before coating the front and back resin compositions on the base paper.
  • a resin layer may be coated on a running base paper after spraying an ozone-containing gas onto a molten resin composition in contact with the base paper.
  • the front and back resin layers are preferably sequentially and preferably continuously extruded and coated on the base paper by a so-called tandem extrusion coating method, and if necessary, the back resin layer is coated. May be covered with a multilayer structure of two or more layers.
  • the surface of the front multilayer resin sheet of the support for image materials can be processed into a glossy surface, a finely rough surface described in JP-B-62-19732, a matte surface or a silk surface, etc. Usually, it is preferable to add to the matte surface.
  • Various additives can be contained in the front multilayer resin sheet and the back resin layer of the image material support of the present invention, if necessary.
  • Support whiteness and image sharpness For the purpose of improving the degree, Japanese Patent Publication No. 60-3430, Japanese Patent Publication No. 63-11655, Japanese Patent Publication No. 1-38291, Japanese Patent Publication No. 1-38292, Japanese Patent Publication No. 1-105245, etc.
  • white pigments such as zinc oxide, talc, and calcium carbonate; release agents; fatty acid amides such as stearic acid amide and arachidic acid amide; and dispersants for pigments and stearin as a releasing agent.
  • Fatty acid metal salts such as zinc oxide, calcium stearate, aluminum stearate, magnesium stearate, zinc palmitate, zinc myristate, calcium palmitate, and the like, hindered phenol, hindered amine, phosphorus described in JP-A-105245 And sulfur-based antioxidants, violet-based pigments and dyes such as Conoretable I, ultramarine, celianble, and phthalocyanine bull, and magenta pigments such as cobalt violet, fast violet, and manganese violet.
  • Dye described in JP-A-2-254440 Fluorescent whitening agent, various additives as appropriate in combination may be contained such as an ultraviolet absorber. These additives are preferably contained as a resin master batch or compound.
  • a white pigment such as titanium oxide, a fluorescent whitening agent, a coloring pigment or coloring. It is preferable to incorporate a dye or other additives such as an antioxidant, an ultraviolet absorber or a release agent in the uppermost layer at a higher concentration than in the resin layer below the uppermost layer.
  • the content of the titanium dioxide pigment in the uppermost layer is preferably at least 7% by weight, more preferably at least 9% by weight, still more preferably at least 12% by weight, particularly preferably at least 15% by weight.
  • the base paper used in the practice of the present invention is preferably a natural pulp paper mainly composed of ordinary natural pulp. Further, a mixed paper made of natural pulp as a main component and synthetic pulp or synthetic fiber may be used. Examples of such natural pulp include those described in JP-A-58-37642, JP-A-60-67940, JP-A-60-69649, JP-A-61-35442 and the like. It is advantageous to use appropriately selected natural pulp. Natural pulp is treated with chlorine, hypochlorite, chlorine dioxide bleaching as usual bleaching treatment, alkali extraction or aluminum bleaching treatment and, if necessary, oxidative bleaching treatment with hydrogen peroxide, oxygen, etc., and combinations thereof.
  • Wood pulp of treated softwood pulp, hardwood pulp, mixed softwood pulp is advantageously used, and kraft pulp, --Various types such as sulfite pulp and soda pulp can be used.
  • Various additives can be contained in the stock slurry during preparation of the stock slurry, which is mainly composed of natural pulp used in the practice of the present invention.
  • fatty acid metal salts are fatty acids, alkyl ketene dimer emulsions or epoxidized higher fatty acid amides, alkenyl or alkyl succinic anhydride anhydrous emulsions described in JP-B-62-7534, Rosin derivatives, etc.
  • dry paper strength enhancers such as anionic, cationic or amphoteric polyacrylamide, polyvinyl alcohol, cationized starch, vegetable galactomannan, etc.
  • filler clay, kaolin, calcium carbonate, titanium oxide, etc., as fixing agent, water-soluble aluminum salt such as aluminum chloride, bansulfate, etc., as pH regulator, caustic soda, sodium carbonate, sulfuric acid, etc.
  • water-soluble aluminum salt such as aluminum chloride, bansulfate, etc.
  • pH regulator caustic soda
  • caustic soda sodium carbonate
  • sulfuric acid etc.
  • Color pigments, coloring dyes it is advantageous allowed to contain a combination of such appropriate fluorescent whitening agent.
  • compositions comprising various water-soluble polymers or hydrophilic colloids or latexes, an antistatic agent, and additives is contained in or on the base paper mainly composed of natural pulp used in the practice of the present invention. It can be contained or applied by coating such as size press or tab size press or blade coating, air-knife coating.
  • water-soluble polymers or hydrophilic colloids examples include starch-based polymers, polyvinyl alcohol-based polymers, gelatin-based polymers, polyacrylamide-based polymers, and cellulosic polymers described in JP-A 1-266537;
  • latexes include petroleum resin emulsions and copolymers containing at least ethylene and acrylic acid (or methacrylic acid) described in JP-A-55-4027 and JP-A-1-80538.
  • Emulsion or latex Emulsion or latex, styrene-butadiene, styrene-acrylic, vinyl acetate-acrylic, ethylene-vinyl acetate, butadiene-methyl methacrylate-based copolymer, and carboxy-modified copolymer emulsion or latex, etc.
  • Sodium chloride, salt as antistatic agent Clay as a pigment such as alkali metal salts such as potassium, alkaline earth metal salts such as calcium chloride and barium chloride, colloidal metal oxides such as colloidal silica, and organic antistatic agents such as polystyrene sulfonate , --Kaolin, calcium carbonate, talc, barium sulfate, titanium oxide, etc., pH regulators such as hydrochloric acid, phosphoric acid, citric acid, caustic soda, and other additives such as the coloring pigments, coloring dyes and fluorescent brighteners mentioned above It is advantageous to incorporate them in an appropriate combination.
  • alkali metal salts such as potassium
  • alkaline earth metal salts such as calcium chloride and barium chloride
  • colloidal metal oxides such as colloidal silica
  • organic antistatic agents such as polystyrene sulfonate , --Kaolin, calcium carbonate, talc, barium sulfate, titanium oxide, etc
  • the thickness of the base paper used in the practice of the present invention is not particularly limited, but preferably has a basis weight of 30 to 25 Og / m 2 .
  • the base paper mainly composed of natural pulp used in the practice of the present invention includes a three-dimensional stylus on the front side of the base paper from the viewpoint of remarkably improving the apparent glossiness of the image material and its print.
  • Cut-off value measured using a surface roughness tester Center plane average roughness in the papermaking direction at 0.8 thigh SRa (hereinafter, cut-off value measured using a stylus type 3D surface roughness tester on the front side of the base paper)
  • the center plane average roughness SRa in the papermaking direction at 0.8 thighs may be simply abbreviated as the center plane average roughness SRa), preferably 1.5 m or less, more preferably 1.4 111 or less. , 1.3 // m or less is more preferable, and 1.2 / m or less is particularly preferable.
  • the cut-off value measured using a stylus type three-dimensional surface roughness meter referred to in this specification is 0.8.
  • the center plane average roughness S Ra at a thigh is defined by the following equation 1.
  • Wx represents the length of the sample area in the X-axis direction (papermaking direction)
  • Wy represents the length of the sample area in the Y-axis direction (direction perpendicular to the papermaking direction)
  • Sa represents the length of the sample area. Indicates the area of the area.
  • the base paper having a center plane average roughness SR a of 1.5 ⁇ m or less is specifically, preferably using the following method, preferably combining two or more of the following methods, and more preferably combining three or more of the following methods. It is clear from the study of the present inventors that it can be obtained by using --
  • the fiber length of the pulp measured on the pulp after beating before adding the paper chemicals, is preferably 0.42 to 0.70, more preferably 0.45 to 0.65, more preferably 0.47 to 0.61 thigh, particularly preferably 0.49mn! Use beaten and prepared so that it is within the range of 0.57mm. If the fiber length of the pulp is too short, the internal bond strength of the base paper becomes weak, and the stiffness decreases.On the other hand, if the fiber length of the pulp is too long, the center surface average roughness SR a tends to increase. is there.
  • the fiber length of pulp referred to in this specification is the length of pulp after beating measured in accordance with JAPAN TA PP I Paper Pulp Test Method No. 52-89 “Paper and Pulp Fiber Length Test Method”. This is expressed as the weighted average fiber length (thigh).
  • the base paper is formed, at least two series of calendar treatments are performed on the base paper using a machine calendar, a super calendar, a heat calendar, etc.
  • the base paper is subjected to machine calendar processing and / or thermal machine power rendering processing as the first series of calendar processing, and then to the machine calendar as needed as the second series and subsequent power rendering processing.
  • the surface of the surface multilayer resin sheet of the image material support of the present invention is subjected to an activation treatment such as a corona discharge treatment or a flame treatment, and thereafter, is disclosed in Japanese Patent Publication No. 61-84643 and Japanese Patent Application Laid-Open No. 1-92740. , JP-A 1-102551, JP-A 1-166035 JP undercoat layer as described in --Can be painted. Further, on the surface of the backing resin layer of the image material support in the present invention, after performing an activation treatment such as a corona discharge treatment or a flame treatment, various back coat layers are applied for antistatic treatment or the like. be able to.
  • an activation treatment such as a corona discharge treatment or a flame treatment
  • the back coat layer includes JP-B-52-18020, JP-B-57-9059, JP-B-57-53940, JP-B-58-56859, and JP-B-59-214849,
  • An inorganic antistatic agent, an organic antistatic agent, a hydrophilic binder, a latex, a curing agent, a pigment, a surfactant, and the like described in Japanese Patent Application Publication No. 58-184144 can be included in an appropriate combination.
  • the support for image materials of the present invention is coated with various photographic constituent layers, and is used for color photographic printing paper, black and white photographic printing paper, typesetting printing paper, copy printing paper, reversing photographic material, silver salt diffusion. It can be used for various purposes such as transfer method negative, positive, and printing materials.
  • a silver chloride, silver bromide, silver chlorobromide, silver iodobromide, silver chloroiodobromide emulsion layer can be provided.
  • the silver halide photographic emulsion layer may contain a color coupler to provide a multilayer silver halide color photographic constituting layer.
  • a photographic constituent layer for silver salt diffusion transfer method can be provided.
  • binders for these photographic constituent layers besides ordinary gelatin, hydrophilic high-molecular substances such as polyvinylpyrrolidone, polyvinyl alcohol and ester sulfate compounds of polysaccharides can be used. Further, various additives can be contained in the above-mentioned photographic constituent layer.
  • sensitizing dyes such as cyanine dyes and merocyanine dyes
  • chemical sensitizers such as water-soluble gold compounds and thio compounds
  • anti-capri or stabilizers such as hydroxy-triazolopyrimidine compounds and mercapto- Heterocyclic compounds, hardening agents such as formalin, vinylsulfone compounds, and aziridine compounds
  • coating aids such as alkylbenzene sulfonic acid salts and sulfosuccinic acid ester salts
  • anti-staining agents such as alkylhydridoquinone compounds.
  • a fluorescent whitening agent, a sharpness improving dye, an antistatic agent, a pH regulator, a fogging agent, and the formation of silver halide be able to.
  • the photographic material according to the present invention may be used in accordance with the photographic material, such as exposure, development, stop, fixation, as described in "Photosensitive Materials and Handling Methods" (Kyoritsu Shuppan, Goro Miyamoto, Photographic Technology Course 2). Processing such as bleaching and stabilization can be performed. Also, multi-layer halogenation Silver color photographic materials can be processed with a developer containing a development accelerator such as benzyl alcohol, thallium salt, phenidone, or with a developer containing substantially no benzyl alcohol. .
  • a development accelerator such as benzyl alcohol, thallium salt, phenidone
  • the support for an image material of the present invention can be used as a support for various heat transfer type thermal transfer recording image receiving materials by coating various heat transfer type thermal transfer recording image receiving layers.
  • Synthetic resins used for the heat transfer type thermal transfer recording image receiving layer include polyester resin, polyacrylate resin, polycarbonate resin, polyvinyl acetate resin, polyvinyl butyral resin, styrene acrylate resin, and vinyl toluene acrylate.
  • a release agent, a pigment, and the like may be added in addition to the synthetic resin.
  • the release agent include solid waxes such as polyethylene wax, polyamide, and Teflon powder, fluorine-based and phosphate-based surfactants, and silicone oils. Among these release agents, silicone rolls are most preferred.
  • silicone oil an oily substance can be used, but a curable type is preferred.
  • the curable silicone oil include a reaction-curable type, a photo-curable type, and a catalyst-curable type, and a reaction-hardened type silicone oil is particularly preferable.
  • reaction-curable silicone oil examples include an amino-modified silicone oil and an epoxy-modified silicone oil.
  • the amount of the reactive silicone oil added is preferably 0.1 to 2 wt% in the image receiving layer.
  • extenders such as silica, calcium carbonate, titanium oxide, and zinc oxide are preferable.
  • the thickness of the image receiving layer is preferably 0.5 to 20 zm, more preferably 2 to 10 zm.
  • the support for an image material of the present invention can be used as a support for various ink jet recording materials by coating various ink image receiving layers. These ink image receiving layers contain various binders for the purpose of improving the drying property of the ink and the sharpness of the image. --You can have it.
  • binders include lime-treated gelatin, acid-treated gelatin, enzyme-treated gelatin, and gelatin derivatives, such as gelatin reacted with dibasic acid anhydrides such as phthalic acid, maleic acid, and fumaric acid.
  • Copolymer latex polyvinyl acetate, vinyl acetate-maleic acid ester copolymer, vinyl acetate-acrylic acid ester copolymer, ethylene-vinyl acetate polymer latex such as vinyl acetate copolymer, acrylic acid ester Acrylic polymers or copolymers such as polymers, methacrylic acid ester polymers, ethylene / acrylic acid ester copolymers, styrene / acrylic acid ester copolymers, latexes of vinylidene chloride copolymers, etc.
  • a functional group-containing monomer such as a carboxyl group of these various polymers.
  • the ink receiving layer of the ink jet recording material according to the present invention may contain various additives in addition to the binder.
  • the surfactant include anionic surfactants such as a long-chain alkylbenzene sulfonate, a long-chain, preferably branched alkylsulfosuccinate, and a long-chain, preferably a branched alkyl group.
  • anionic surfactants such as polyalkylene oxide ethers of phenols contained therein and polyalkylene oxide ethers of long-chain alkyl alcohols, etc., JP-B-47-9303, US Pat. No.
  • silane coupling agents such as a-aminopropyltriethoxysilane, N-? (Aminoethyl) -a-aminopropyl pyrtrimethoxysilane, and as polymer hardeners
  • a hardening agent such as an active halogen compound, a vinyl sulfone compound, an aziridine compound, an epoxy compound, an acryloyl compound, an isocyanate compound; and as a preservative, a p-hydroxybenzoic acid ester compound described in JP-A-1-02551.
  • an absorbent as a benzotriazole compound having a hydroxydi-alkylphenyl group at the 2-position, as an antioxidant, as a polyhindered phenol compound described in JP-A-1-105245, as a pencil brushing agent
  • Various additives such as octyl alcohol and silicon-based antifoaming agents such as caustic soda, sodium carbonate, sulfuric acid, hydrochloric acid, phosphoric acid, and citric acid can be appropriately combined and contained. That.
  • the present invention will be described in detail with reference to examples, but the contents of the present invention are not limited to the examples.
  • Fiber length of pulp after beating a mixed pulp consisting of 85% by weight of hardwood bleached kraft pulp and 15% by weight of hardwood bleached sulphite pulp (JAPANTAPPI Paper Pulp Test Method No. 5 2 -89 After the beating so that the length-weighted average fiber length measured in accordance with the “Method” is 0.60, the beating is performed.
  • the base paper is finally dried so that the moisture content of the base paper becomes 8% by weight in terms of absolute dry moisture, machine-processed with a linear pressure of 7 Okgf / cm, and the center of the basis weight 1 ⁇ Og / m 2
  • a base paper for an image material support having an average surface roughness SRa of 1.30 m was produced.
  • MFR melt flow rate of polyethylene resin
  • MFR 15 g / 10 minutes
  • the cooling roll a roll having a surface roughness such that the center surface average roughness SRa of the back layer surface after applying the following back layer was 1.15 ⁇ m was used.
  • the cooling rolls used were roughened by the liquid honing method and operated at a cooling water temperature of 12 ° C. Subsequently, the surface multilayer resin sheet was coated as described below to produce a support for an image material.
  • the evaluation criteria are as follows.
  • Grade 4-1 Peeling unevenness often occurs, causing practical problems.
  • a blue emulsion layer containing a yellow color coupler, an intermediate layer containing a color-mixing inhibitor, a green emulsion layer containing a magente evening color coupler, and an ultraviolet ray are arranged adjacently on the undercoat layer of the image material support.
  • An ultraviolet absorbing layer containing an absorber, a red-sensitive emulsion layer containing a cyan coloring coupler, and a protective layer were applied by an E-bar for multilayer coating to prepare a blank printing paper having a total amount of gelatin of 7 g / m 2 . 0 colors sensitive emulsion layer in the silver nitrate.
  • 6 g / m comprises the corresponding silver chlorobromide to 2, further the formation of the silver halide, other gelatin required dispersion and film formation, an appropriate amount of Capri inhibitor, increasing Contains dyes, coating aids, hardeners, thickeners, and appropriate amounts of filter dyes.
  • store the prepared color photographic paper at 35 ° C and normal humidity for 5 days bake the group photo, develop, bleach and fix it, develop it stably, and then dry it to make a photo print. Done.
  • separate samples were prepared for white solid (unexposed) and black solid (black).
  • a series of processes of exposure, development, and drying were performed by an automatic printer and an automatic developing machine. The color development was performed in the order of color development (45 seconds), bleaching and fixing (45 seconds), stable (1 minute 30 seconds), and> drying.
  • Grade 10-9 Very or very high glossiness in appearance. --Grade 8 to 6: High gloss appearance.
  • Grade 10 to 9 Slightly negative curl (curl toward the back layer side) to flat, extremely excellent curl physical properties.
  • Grade 8-7 Slightly positive curl (curl toward image forming layer side), but good curl physical properties.
  • Grade 4-1 Positive curl is large, which is a practical problem.
  • LDPE-1 low density abbreviated as polyethylene resin
  • MB-1 batch A resin composition consisting of 25 parts by weight and 75 parts by weight of low-density polyethylene resin (LDPE-1) Using a melt extruder at 315 ° C and a thickness of 30 zm at a running speed of the base paper of 200 m / min, the coating was melt-extruded at a linear pressure of 4 Okgf / cm between the mirror cooling roll and the press roll.
  • LDPE-1 batch low-density polyethylene resin
  • the melt extrusion coating of the polyethylene resin on the front and back sides was performed by the so-called tandem method in which the melt extrusion coating was performed sequentially. At that time, the surface of the resin layer containing the titanium dioxide pigment of the resin-coated paper was processed to a glossy surface. Furthermore, do not apply the calendar treatment between the processing of the front and back resin layers before winding, or the on-machine soft calendar treatment under the conditions of the press linear pressure and the number of series shown in Table 2.
  • the following coating solution for the back layer was applied on-machine.
  • the front resin surface is subjected to corona discharge treatment, and lime-treated gelatin 1.2 g, low molecular weight gelatin (Nitta Gelatin Co., Ltd.
  • LDPE-1 low-density polyethylene resin
  • MB-1 mass batch
  • Comparative Examples 7 to 10 After corona discharge treatment of the surface of the base paper, the same resin composition for the surface resin layer and the resin composition for the upper layer as in Comparative Example 2 with a thickness of 15 m was used as the resin composition for the lower layer on the surface.
  • the same resin composition for the surface resin layer as in Comparative Example 2 having a thickness of 15 / m was prepared by using a two-layer co-extruder at a resin temperature of 315 ° C and a traveling speed of the base paper of 20 Om / min.
  • the two layers were simultaneously extruded at a linear pressure of 4 Okgf / cm between the cooling roll on the mirror surface and the press roll to coat the surface layer, and the soft calender treatment under the processing conditions shown in Table 2
  • a support for an image material was obtained in the same manner as in Comparative Example 2 except that pressure treatment was not applied, or thermal soft calendering was performed or force rendering was not performed.
  • the resin composition for the lower layer and the upper layer used in Comparative Example 8 instead of the resin composition for the lower layer and the upper layer used in Comparative Example 8, as the resin composition for the lower layer, the same resin composition for the surface resin layer as in Comparative Example 5 having a thickness of 15 // m, the upper layer The same resin composition for the surface resin layer as in Comparative Example 5 having a thickness of 15 m was used as the resin composition for the soft coating, and a soft calendering treatment under the processing conditions shown in Table 2 (when heat was applied). A support for an image material was obtained in the same manner as in Comparative Example 8 except that a treatment using only a soft pressing method was performed, or a thermal soft calendar treatment was performed, or no calendar treatment was performed. Comparative Example 15
  • ML4 methyl acetate catalyst
  • the polyethylene resin (ML 1) for Example 1 has a density of 0.908 g / cm 3 and a melting point of 103 ° C.
  • Polyethylene resin (ML 2) for Example 2 Density 0.904 g / cm 3 , melting point 98 ° C.
  • Polyethylene resin (ML3) for Example 3 density 0.900 g / cm 3 , melting point 95. C.
  • Polyethylene resin (ML 4) for Examples 4 and 5 density 0.898 g / cm 3 , melting point 93 ° C
  • polyethylene resins [(ML1) to (ML5)] 5 2.1 parts by weight which were produced by polymerization using the following five types of MEC polymerization catalysts
  • a support for an image material was obtained in the same manner as in Comparative Example 9, except that a thermal soft calendar treatment under the conditions of temperature, press linear pressure and the number of series was performed.
  • Polyethylene resin (ML 1) for Example 7 density 0.908 g / cm 3 , melting point 103 °
  • Polyethylene resin (ML 3) for Example 9 density 0.900 g / cm 3 , melting point 95 ° C.
  • Polyethylene resin (1 ⁇ 5) for Example 12 density 0.8958 / (; 111 3 , melting point 90 ° C.
  • Front side of the support for image material obtained in Comparative Examples 1 to 15 and Examples 1 to 12 above The melting point and content ratio of the thermoplastic resin in the resin layer in the single-layer or two-layer resin sheet of Table 1 are shown in Table 1.
  • the content of thermoplastic resin in Table 1 (Note 1)
  • the content ratio of each thermoplastic resin with respect to the total thermoplastic resin component is shown by weight% (wt%).
  • Table 2 shows the evaluation results of the appearance of glossiness and the occurrence of peeling unevenness of the photographic print of the support for image materials. - - table 1
  • Example Example Example 1 Melting point of thermoplastic resin in resin layer of front resin sheet (° c)
  • Example Comparative example 1 109 (100wt3 ⁇ 4)
  • Comparative Example 1 1 93 (60.0wt%) and 109 (40.0wt) 93 (60.0wt%) and 109 (40.0wt%) Comparative Example 1 2 Same as above ⁇ /-Comparative Example 1 3 Same as above
  • Comparative example 1 4 Same as above Comparative example 1 5 93 (60.0 wt%) and 109 (40.0 wt%) 109 (100 wt%) Example 1 103 (60.0 wt%) and 109 (40.0 wt%)
  • Example 6 90 (60.0wt%) and 109 (40.0wt%)
  • Example 1 2 2 layers 5 5 1 0 1 series 8 6 From the results in Table 2, it can be seen that the upper side of the base paper containing natural pulp as a main component contains more thermoplastic resin (a) than the lower layer (B), and the lower layer (B) contains thermoplastic resin (b).
  • the support for an image material of the present invention (Examples 1 to 12) pressed in a non-heated or heat-retained state provides a photographic print with a high apparent gloss and no uneven peeling. It can be seen that this is an excellent support for image materials.
  • the image material support (Examples? To 12) pressed (heat soft calendering) while maintaining heat is more excellent. It is clear that there is.
  • thermoplastic resin used for the lower layer (B) was improved from the viewpoint of improving the apparent glossiness and peeling unevenness of the photographic print.
  • Soft calender treatment or pressure welding while maintaining heat (thermal soft calender-treatment) is clearly understood to be preferably performed in two or more series.
  • Example 4 was the same as Example 4 except that the soft calendering process (the process of pressing only without applying heat) was performed under the conditions of the press linear pressure and the number of series shown in Table 3. In the same manner, a support for an image material was manufactured.
  • the soft calendering process the process of pressing only without applying heat
  • Table 3 shows the evaluation results of the apparent glossiness and the occurrence of uneven peeling of the photographic print of the obtained support for image materials.
  • Example 10 the same procedure as in Example 10 was carried out except that the thermal soft calendering treatment was performed under the conditions of the press temperature, the press linear pressure, and the number of series described in Table 3, and the support for the image material was performed. Body manufactured.
  • Table 3 shows the evaluation results of the apparent glossiness and the occurrence of uneven peeling of the photographic print of the obtained support for image materials.
  • thermoplastic resin (a) having a melting point higher than 100 ° C, and a thermoplastic resin (b) The melting point is 105 ° C or lower and lower than the melting point of the thermoplastic resin (a); Further, after the two-layer resin sheet is covered, the image material support is pressed against the two-layer resin sheet in a state where heat is not particularly applied or heat is held, and The support (Examples 13 to 14) can be clearly seen to be an excellent support for an image material, in which a photographic print having a high apparent gloss can be obtained, and peeling unevenness does not occur.
  • the press linear pressure in the pressure welding without applying heat is 7.5 to 55. It is well understood that the treatment is preferably performed at kgf / cm, and particularly preferably performed at 15 to 45 kgf / cm.
  • the press linear pressure in the pressure welding (heat soft calendering) while holding heat is preferably performed at 3 to 45 kgf / cm, more preferably at 4 to 35 kgf / cm. It is clear that the reaction is more preferably performed at 5 to 25 kgf / cm.
  • Comparative Example 9 a support for an image material was obtained in the same manner as in Comparative Example 9, except that the thermal soft calender treatment was performed under the conditions of the pressing temperature, the pressing linear pressure, and the number of series shown in Table 5.
  • the same resin composition for the surface resin layer as in Comparative Example 1 having a thickness of 15 ⁇ m as the lowermost resin layer After the surface of the base paper is subjected to corona discharge treatment, the same resin composition for the surface resin layer as in Comparative Example 1 having a thickness of 15 ⁇ m as the lowermost resin layer, The same resin composition for the surface resin layer as in Comparative Example 1 having a thickness of 10 m, and the same resin composition for the surface resin layer as in Comparative Example 1 having a thickness of 5 / in was used as the uppermost resin layer.
  • Comparative Example 18 It was used in Comparative Example 18, in place of the resin composition for the top layer of the intermediate layer and the thickness of the thick 10 ⁇ M 5 ⁇ m, flop-less according to and Table 5 using it it the followings A support for an image material was obtained in the same manner as in Comparative Example 18 except that a thermal soft calendar treatment was performed under the conditions of temperature, linear pressure of press, and number of series.
  • a resin composition for an intermediate layer having a thickness of 1 O zm 25 parts by weight of a master batch (MB-1), 30 parts by weight of a low-density polyethylene resin (LDPE-1) and the following polyester resin (PET R-1, (Melting point: 224 ° C.) 45 parts by weight.
  • a resin composition for an intermediate layer having a thickness of 1 O zm 25 parts by weight of a master batch (MB-1), 30 parts by weight of a low-density polyethylene resin (LDPE-1) and the following polyester resin (PET R-1, (Melting point:
  • Mass batch 1 (MB-3) uses the same parts by weight of polyester resin (PETR-2) instead of low density polyethylene resin (LDPE-1) used to prepare master batch 1 (MB-1).
  • LDPE-1 low density polyethylene resin
  • Table 4 shows the melting point and content ratio of the thermoplastic resin in the resin layer in the front-side multilayer resin sheet of the support for image materials obtained in Comparative Examples 16 to 20 and Examples 15 and 16. .
  • the content of thermoplastic resin (Note 1) in Table 4 indicates the content of each thermoplastic resin with respect to the total thermoplastic resin component in each resin layer in terms of% by weight (wt%).
  • Table 5 shows the evaluation results of the appearance of the glossiness and the degree of occurrence of uneven peeling of the photographic print of the support for image materials.
  • Example 15-2 Same as above Same as Example 16 1 I 93 (60.0 wt%), 112 (48.lwt%) and 224 (41.224 (100 wt%)
  • thermoplastic resin (a) has a melting point higher than 100 ° C
  • thermoplastic resin (b) It has a melting point of 105 ° C. or less and is lower than the melting point of the thermoplastic resin (a)
  • the image material support is heated to the multilayer resin sheet side.
  • the support for an image material of the present invention (Examples 15 to 16) pressed in a holding state can provide a photographic print having a high glossiness in appearance, and is an excellent support for an image material without occurrence of peeling unevenness. You can see that it is a body. Further, from the viewpoint of the effect of improving the apparent glossiness, it can be clearly understood that it is preferable to perform the pressure welding (thermal soft calendering) while maintaining the heat in two or more series.
  • the support for image materials (Comparative Examples 16 to 20) outside the present invention in which the melting point of the thermoplastic resin (b) is higher than 105 ° C. has a low apparent glossiness of the photographic print, and uneven peeling. It is well understood that the occurrence of the problem is large and there is a problem.
  • Example 11 the same resin composition as that for the upper layer of Example 11 was used as the resin composition for the upper layer, and the compounding amount (in parts by weight) shown in Table 6 was used as the resin composition for the lower layer.
  • Polyethylene resin (ML4) polymerized and produced using a meta-opening polymerization catalyst of (a) (abbreviated as thermoplastic resin (b) in Table 6) and [75 parts by weight—polyethylene resin (ML4) Amount of resin (parts by weight)]
  • Example 11 was carried out in the same manner as in Example 11, except that the composition was used.
  • the processing conditions for the thermal soft calendar treatment were the same as in Example 11, with a press temperature of 55 ° C, a linear pressure of 1 Okgf / cm, and two series.
  • the content ratio of polyethylene resin (ML4) in Table 6 indicates the content ratio of the resin with respect to all the thermoplastic resin components in the lower layer by weight% (wt%).
  • Table 6 shows the evaluation results of the apparent glossiness and the degree of occurrence of uneven peeling of the photographic print of the obtained support for image materials. -Table 6
  • the imaging material support of the present invention containing a thermoplastic resin (b) having a melting point of 105 ° C. or less in combination with a polyethylene resin polymerized and produced by a high pressure method (Examples 17 to 17) 22) clearly shows that the photographic print has a high apparent glossiness and is an excellent support for an image material with little occurrence of peeling unevenness.
  • the content of the thermoplastic resin (b) having a melting point of 105 ° C. or less in the lower resin layer is selected from the viewpoints of improving the glossiness and peeling unevenness in appearance.
  • weight is more preferably 70 weight% or more.
  • Example 11 the same resin composition as that for the lower layer of Example 11 was used as the resin composition for the lower layer, and 25% by weight of the master batch (MB-1) was used as the resin composition for the upper layer.
  • Ziegler method high-density polyethylene resin with a blending amount (expressed as% by weight or wt%) described in Table 7 [density 0.967 g / cm 3 , MFR 7.0 g / l 0 min, melting point 130 ° C, Hereinafter, abbreviated as high-density polyethylene resin (HDPE-1)] and the remaining weight% of low-density polyethylene resin (LDPE-1).
  • the upper layer has a thickness of 12 zm and the lower layer has a thickness of 12 zm.
  • Example 11 except that the thickness of the coating was 18 m, and that the thermal soft calendar treatment was performed under the conditions of a press temperature of 70 ° C, a press linear pressure of 1 Okgf / cm, and a number of series of 2. The same was done.
  • the content ratio of high-density polyethylene resin in Table 7 (Note 3) indicates the content ratio of high-density polyethylene resin to all thermoplastic resin components in the upper layer in terms of% by weight (wt%).
  • Examples 23 to 30 were carried out in the same manner as in Examples 23 to 30, except that the resin composition of Comparative Example 10 was used as the resin composition for the lower layer.
  • Table 7 shows the evaluation results of the apparent glossiness, the degree of occurrence of uneven peeling, and the curl properties of the photographic prints of the supports for image materials obtained in Examples 23 to 30 and Comparative Examples 22 to 29.
  • the support for the image material of the present invention (Examples 23 to 30) was It can be clearly seen that this is an excellent support for an image material that can provide a photographic print having a high glossiness, has little occurrence of peeling unevenness, and can provide an image material having good curl physical properties.
  • high-density polyethylene resin with a melting point of 130 ° C or more used in combination with low-density polyethylene resin in the upper layer contains 15% by weight or more of the total thermoplastic resin component in the upper layer.
  • the body (Examples 24 to 30) gives a photographic print with an extremely high apparent glossiness, has less occurrence of peeling unevenness, and is clearly a better support for image materials.
  • the content ratio of the high-density polyethylene resin in the upper layer is reduced from the viewpoint of overall performance including curl physical properties.
  • those with 20 to 75% by weight (Examples 25 to 30) with respect to the total heatable resin component are more excellent, and those with 25 to 65% by weight (Examples 26 to 29) It is clear that it is particularly excellent.
  • non-inventive imaging material supports (Comparative Examples 22 to 29) which do not contain a thermoplastic resin (b) having a melting point of 105 ° C or lower in the lower layer have low apparent glossiness of photographic prints. It is clear that even if high-density polyethylene resin is contained in the upper layer, the problem is that the physical properties of the steel deteriorate.
  • Example 29 was carried out in the same manner as in Example 29 except that the following resin compositions (R1) to (R8) were used instead of the resin composition for the upper layer used in Example 29.
  • the processing conditions for the thermal soft calender treatment were the same as in Example 29: the press temperature was 70 ° C, the press linear pressure was 1 Okgf / cm, and the number of series was two.
  • the content of the thermoplastic resin (a) contained in the upper layer was 60.0% by weight with respect to all the thermoplastic resin components in the upper layer, except for Example 32. Since polyethylene resin is used, the content is 100% by weight based on the total thermoplastic resin component in the upper layer.)
  • Example 31 polyethylene resin produced by polymerization using a meta-opening polymerization catalyst (ML 1: density 0.908 g / cm 3 , melting point 103 ° C) 5 2.1 parts by weight
  • ML 1 density 0.908 g / cm 3 , melting point 103 ° C
  • a resin composition comprising 75 parts by weight of a compound resin composition comprising 22.9 parts by weight of a low-density polyethylene resin (LDPE-1) and 25 parts by weight of a masterbatch (MB-1).
  • LDPE-1 low-density polyethylene resin
  • MB-1 masterbatch
  • LDPE-1 low-density polyethylene resin produced by polymerization using an autoclave-type reactor by a high-pressure method
  • Resin composition for upper layer for Example 34 (R5): polyethylene resin produced by polymerization using a meta-opening polymerization catalyst (density 0.92 lg / cm 3 , melting point 115 ° C) 52.1 parts by weight of low-density polyethylene resin (LDPE-1)
  • LDPE-1 low-density polyethylene resin
  • a resin composition comprising 75 parts by weight of a compound resin composition comprising 22.9 parts by weight and 25 parts by weight of a batch (MB-1).
  • Resin composition for upper layer for Example 35 (R 6): Linear low-density polyethylene resin polymerized and produced by Philips method (density 0.904 g / cm 3 5 melting point 120 ° C) 52.1 weight parts and low-density polyethylene A resin composition comprising 75 parts by weight of a compound resin composition comprising 22.9 parts by weight of a resin (LDPE-1) and 25 parts by weight of a batch (MB-1).
  • Resin composition for upper layer for Example 36 (R7): Linear low-density polyethylene resin polymerized and produced by the Philips method (density 0.927 g / cm 3 , melting point 125 ° C) 52.1 parts by weight and low-density polyethylene A resin composition comprising 75 parts by weight of a compound resin composition comprising 22.9 parts by weight of a resin (LDPE-1) and 25 parts by weight of a masterbatch (MB-1).
  • the imaging material support of the present invention (Examples 31 to 37) containing the thermoplastic resin (a) having a melting point higher than 100 ° C. in the upper layer more than in the lower layer has an apparent luster. Excellent photographic prints with excellent image quality and less peeling unevenness --It is clear that it is a support for.
  • the thermoplastic resin (a) those having a melting point higher than 105 ° C are preferable, and those having a melting point of 110 ° C or higher are more preferable, from the viewpoints of improvement in appearance glossiness and uneven peeling. , 1 1 5. It is clear that those having a temperature of C or higher are more preferable, and those having a temperature of 120 ° C. or higher are particularly preferable.
  • the support for an image material (Comparative Example 30) outside the present invention in which the melting point of the thermoplastic resin (a) is 100 ° C. or less, has a low apparent glossiness of a photographic print, and has an uneven peeling. It is well understood that the occurrence is large and there is a problem.
  • Table 9 shows the evaluation results of the apparent glossiness and the degree of occurrence of uneven peeling of the photographic print of the obtained support for image materials.
  • the image material support of the present invention is an excellent image material support capable of obtaining a photographic print having a high gloss appearance and having no occurrence of peeling unevenness. You can see that.
  • the base paper used in the practice of the present invention preferably has a center plane average roughness SRa of 1.5 ⁇ m or less, more preferably 1.4 ⁇ m or less, and more preferably 1.3 / m or less. It is further understood that those having an even more preferable size and those having a size of 1.2 m or less are particularly preferable. In addition, it can be seen that the number of series in one heat calender process is much better in two series than in one series. Example 43-51
  • the surface of the base paper was subjected to a corona discharge treatment, and then the surface multilayer resin sheet was formed.
  • the following resin compositions (R9) to (R11) and as the resin composition for the upper layer, the following resin compositions (R12) to (R13) having a coating thickness of 15 ⁇ m.
  • the temperature of the resin composition shown in Table 10 and at a running speed of the base paper of 30 Om / min, using a melt extruder with separate stations in the order of lower layer and then upper layer.
  • Each of the mirror surface rolls and the press rolls was sequentially melt-extruded at a linear pressure of 4 Okgf / cm to cover the multi-layer resin sheet.
  • Okgf / cm same as Example 27 except that the number of series was 2 It was carried out as follows.
  • Lower layer resin composition (R9) The same lower layer resin composition as used in Example 27 [ie, the content of polyethylene resin (ML4) was 60.0% with respect to the total thermoplastic resin component in the lower layer. % By weight].
  • Lower layer resin composition A compound resin composition consisting of 60 parts by weight of a polyethylene resin (ML4) and 40 parts by weight of a low-density polyethylene resin (LDPE-1).
  • Resin composition for upper layer Same resin composition for upper layer as used in Example 27 [that is, the content ratio of titanium dioxide pigment (as a ratio to the weight of the upper layer) was 12.5%, Upper layer resin composition in which the content of polyethylene resin (HDPE-1) is 40.1% by weight based on the total thermoplastic resin component in the upper layer].
  • HDPE-1 polyethylene resin
  • Resin composition for upper layer Resin consisting of 30 parts by weight of masterbatch (MB-1), 36.3 parts by weight of low-density polyethylene resin (LDPE-1) and 33.7 parts by weight of high-density polyethylene resin (HDPE-1)
  • the composition [ie the content of titanium dioxide pigment (as a percentage of the weight of the upper layer) is 15% by weight, Resin composition in which the content ratio of 1-lene resin (HDPE-1) is 40.1% by weight based on the total thermoplastic resin component in the upper layer].
  • Table 10 shows the evaluation results of the appearance of glossiness and the occurrence of uneven peeling of the photographic print of the obtained support for image materials.
  • the support for image materials of the present invention is an excellent support for image materials that can provide a photographic print with high apparent gloss and that does not cause uneven peeling. You can see that it is a body.
  • a photographic print In view of the effect of improving the apparent glossiness and peeling unevenness, when the resin composition for the surface multilayer resin sheet having a multilayer structure is melt-extruded and coated, the temperature of the upper layer resin composition is adjusted to the lower layer. It is well understood that it is preferable to lower the temperature of the resin composition. Further, even if the content of additives such as titanium dioxide pigment, coloring pigment, release agent and antioxidant in the lower layer is lower than the content of additives in the upper layer, there is no problem in the effect of the present invention. It is clear that it is economically advantageous.
  • Example 11 the running speed of the base paper was set to the running speed shown in Table 11, and the resin composition for the lower layer was the same as that used in Example 47 having a coating thickness of 15 ⁇ m.
  • the procedure was performed in the same manner as in Example 11 except that the thermal soft calender treatment conditions were a press temperature of 70 ° C., a press linear pressure of 2 O kgf / cm, and the number of series was two.
  • the melt extrusion coating of the two-layer resin composition for the surface resin layer was performed by a co-extrusion method in the same manner as in Example 11.
  • Example 47 the running speed of the base paper was set to the running speed shown in Table 11, and the coating thickness of the upper and lower layers of the multilayer resin sheet in the table was changed to the coating thickness shown in Table 11. Except for, the procedure was the same as in Example 47.
  • the processing conditions of the thermal soft calender treatment were the same as in Example 47, with a breath temperature of 70 ° C, a press linear pressure of 2 Okgf / cm, and two series. Further, the melt extrusion coating of the two resin compositions for the surface resin layer was performed by a sequential melt extrusion coating method (abbreviated as a sequential method in Table 11) as in Example 47.
  • Table 11 shows the evaluation results of the apparent glossiness and the degree of occurrence of uneven peeling of the photographic prints of the support for image materials obtained in Examples 55 to 62 described above.
  • the thickness of the lower layer is 25% of the thickness of the multilayer resin sheet from the viewpoint of the effect of improving the apparent glossiness and peeling unevenness of the photographic print. It is clear that the above is preferable, 40% or more is more preferable, and 50% or more is particularly preferable.
  • Examples 52 and 55 (each with a base paper traveling speed of 200 m / min), Examples 53 and 56 (each with a base paper traveling speed of 250 m / min), and From the comparison of the results of Example 54 and Example 60 (each of the running speed of the base paper of 30 Om / min), the running speed of the base paper (that is, the manufacturing speed of the support for the image material) must be higher.
  • the surface multilayer resin sheet was formed by the sequential melt extrusion coating method among the image material supports of the present invention. It can be clearly seen that the support for the image material is particularly preferred. Further, the image material support is often a particularly excellent image material support capable of obtaining an image material having a high apparent gloss and a print thereof, having no occurrence of peeling unevenness, and capable of high-speed and stable production. Understand.
  • An ink jet recording material was prepared by coating the following ink image receiving layer on the support for the image material used in Example 47 and Comparative Example 7 instead of the layer constituting the image of the silver halide silver halide toner image. .
  • the ink jet recording material (Example 63 corresponding to the support) having the image material support of the present invention (Example 47) had a high apparent glossiness and was excellent.
  • the ink jet recording material (Comparative Example 31 corresponding to the support) having the image material support (comparative example 7) outside the present invention has a poor glossiness in appearance. There was a problem.
  • the ink receiving layer is composed of 30 g of a 10% by weight aqueous solution of gelatin treated with an alkali-treated gelatin having a molecular weight of 70,000, sodium carboxymethyl cellulose (a degree of etherification of 0.7 to 0.8, and a B-type viscometer.
  • the following heat transfer type thermal transfer recording image receiving layer was coated on the support for the image material used in Example 47 and Comparative Example 7 instead of the silver halide color image forming layer, and the heat transfer type heat transfer was performed.
  • a recording image receiving material was prepared.
  • the heat transfer type thermal transfer recording image-receiving material (Example 64 corresponding to the support) having the image material support (Example 47) of the present invention has a high apparent glossiness.
  • the heat transfer type thermal transfer recording image-receiving material (Comparative Example 32 corresponding to the support) having the image material support (comparative example 7) outside the present invention has an apparent glossiness. Was inferior and problematic.
  • TP-220 manufactured by Nippon Kasei Co., Ltd.
  • KF-393 manufactured by Shin-Etsu Chemical Co., Ltd.
  • a masterbatch of titanium dioxide pigment consisting of 25 ppm by weight [hereinafter abbreviated as masterbatch (MB-1)]
  • a resin composition consisting of 25 parts by weight and 75 parts by weight of a low-density polyethylene resin (LDPE-1) was prepared at a resin temperature of 315 ° C.
  • the melt-extrusion coating was performed at a linear pressure of 40 kgf / cm between the cooling roll and press roll on the mirror surface. At that time, the surface of the resin layer containing the titanium dioxide pigment of the resin-coated paper was processed to a glossy surface.
  • the front resin surface is subjected to corona discharge treatment, lime-treated gelatin 1.2 g, low molecular weight gelatin (manufactured by Nitta Gelatin Co., Ltd.) , P-3226) 0.3 g, vinylidene chloride-based latex 1.5 g, butyl paraoxybenzoate 10 wt. Methanol solution 0.3 g, and 5 wt.% Sulfosuccinate-2-ethylhexyl ester salt methanol and water mixture 0.45 g.
  • a subbing coating solution containing 100 g of water was prepared and uniformly coated on-machine so as to have a coating amount of gelatin of 0.06 g / m 2 to obtain a support for an image material.
  • the surface of the base paper was subjected to corona discharge treatment, the surface was treated as a resin composition for the lower layer with the same resin composition for the front resin sheet and the resin composition for the upper layer as in Comparative Example 34 having a thickness of 15 m. Then, the same resin composition for the front resin sheet as in Comparative Example 34 having a thickness of 15 was mirror-polished using a two-layer co-extruder at a resin temperature of 315 ° C. and a running speed of the base paper of 200 m / min.
  • Comparative Example 4 In place of the resin composition for the lower layer used in 2, 25 parts by weight of master batch (MB-1), 22 parts by weight of low density polyethylene resin (LDPE-1) and 22 parts by weight of high density polyethylene resin (HDPE- 1) Do not use a resin composition consisting of 53 parts by weight and do not carry out calendering, or carry out a thermal soft calendering treatment under the conditions of press temperature, press linear pressure and number of series shown in Table 13. A support for an image material was obtained in the same manner as in Comparative Example 42 except that coating was performed.
  • MB-1 master batch
  • LDPE-1 low density polyethylene resin
  • HDPE- 1 high density polyethylene resin
  • a support for an image material was obtained in the same manner as in Comparative Example 33 except that a thermal softening treatment was performed under the conditions of the press temperature, the press linear pressure, and the number of series described in 3.
  • Comparative Example 41 In the same manner as in Comparative Example 41, except that the calendering treatment was performed under the conditions of the press temperature, the linear pressure of the press, and the number of series shown in Table 13 instead of the calendering treatment used in Comparative Example 41, This was performed to obtain a support for an image material.
  • Polyester resin (PETR-1) is a copolymerized polyethylene terephthalate (the dihydrouronic acid component is entirely composed of terephthalic acid, the diol component is 88 mol% of ethylene glycol, and 1,4-cyclohexanedimethanol is 10 mol.
  • a resin composition for the top layer with a thickness of 5 m 25 parts by weight of the following master batch (MB-3) and polyester resin (PETR-2, density 1.33 g / cm 3 , intrinsic viscosity [r?] 0.7dl / g, melting point: 224 ° C) of 75 parts by weight.
  • the masterbatch (MB-3) is a polyester resin instead of the low-density polyethylene resin (LDPE-1) used to prepare the mass batch (MB-1).
  • Table 12 shows the melting point and the content of the thermoplastic resin in the resin layer in the single-layer or multilayer resin sheet on the front side.
  • the content ratio of the thermoplastic resin indicates the content ratio of each thermoplastic resin with respect to the total thermoplastic resin component in each resin layer by weight% (wt%).
  • Table 13 shows the evaluation results of the appearance of glossiness and the occurrence of uneven peeling of the photographic print of the support for image materials.
  • the image material support according to the present invention which is higher, and after being coated with the multilayer resin sheet, the image material support is pressed against the multilayer resin sheet side while holding heat (Example 6) 5 to 68) clearly show that the photographic print has a high glossiness and that it is an excellent support for an image material without occurrence of peeling unevenness.
  • the pressure welding thermal soft calendering
  • the press linear pressure is preferably performed at 3 to 45 kgf / cm, more preferably at 4 to 35 kgf / cm, and more preferably 5 to 2 kgf / cm. It can be clearly seen that it is particularly preferred to carry out at 5 kgf / cm.
  • the image material support other than the present invention is, for example, Even if the conditions such as the press temperature, press linear pressure, and the number of series are changed, the apparent glossiness of the photographic prints is low, and there is a tendency to block on rolls by thermal soft calendering. The occurrence is poor, and it is obvious that there is a problem.
  • Example 65 the resin composition for the lower layer was the same as that for the lower layer in Example 65.
  • a resin composition for the upper layer 25 wt% of master batch (MB-1) and a high-density polyethylene resin having a blending amount (wt%, indicated as wi ⁇ ) shown in Table 14
  • Example 65 was carried out in the same manner as in Example 65, except that a resin composition comprising (HDPE-1) and a low-density polyethylene resin (LDPE-1) with the remaining weight% was used.
  • the processing conditions for the heat soft calendering were the same as in Example 65, with a press temperature of 80 ° C, a press linear pressure of 1 Okgf / cm, and two series.
  • the content ratio of high-density polyethylene resin (Note 2) in Table 14 indicates the content ratio of high-density polyethylene resin to the total thermoplastic resin component in the upper layer in weight% (wt%).
  • Table 14 shows the evaluation results of the apparent glossiness and the degree of occurrence of peeling unevenness of the photographic print of the obtained support for image materials.
  • Table 4 Example High density polyethylene photo in upper layer. Lint Appearance of blending amount and content of resin for uneven peeling Degree of occurrence
  • the content is preferably 50% by weight or more, more preferably 60% by weight or more, and particularly preferably 70% by weight or more, based on all the thermoplastic resin components in the upper resin layer. Can be clearly understood.
  • the image material support outside the present invention in which the thermoplastic resin (c) in the upper layer does not satisfy the requirements of the present invention has a low apparent glossiness of the photographic print, The occurrence of uneven peeling is poor, and it is clear that there is a problem.
  • Table 15 shows the evaluation results of the apparent glossiness and the degree of occurrence of peeling unevenness of the photographic print of the obtained support for image materials.
  • the image material support of the present invention (Examples 72 to 76) is an excellent image material support which can provide a photographic print having a high glossiness and has no peeling unevenness. It is clearly understood that.
  • the base paper used in the practice of the present invention preferably has a center plane average roughness SRa of 1.5 m or less, more preferably 1.4 zm or less, still more preferably 1.3 m or less. It is well understood that those having a thickness of 1.2 zm or less are particularly preferable.
  • the number of series in one process of thermal soft calendar is much better than that of one series. --Examples 77 to 85
  • Example 65 the surface of the base paper was subjected to a corona discharge treatment, and then a surface multilayer resin sheet was formed on the surface as a resin composition for a lower layer.
  • the surface resin layer is coated by successively melt-extruding and coating at a linear pressure of 40 kgf / cm between the mirror surface roll and the press mouth, and the heat soft calendar is processed at a press temperature of 80 ° C and a press linear pressure of Performed in the same manner as in Example 65, except that the number of lines was 20 kgf / cm and the number of lines was 2.
  • Lower layer resin composition (R14) Same lower layer resin composition as used in Example 65.
  • Lower layer resin composition (R15) a resin composition that is a low-density polyethylene resin (LDPE-1).
  • Lower layer resin composition (R16) a resin composition that is a low-density polyethylene resin with a tuber method having a density of 0.924 g / cm 3 , MFR4.Og / 10 minutes, and a melting point of 110 ° C.
  • Resin composition for upper layer Resin consisting of 30 parts by weight of master batch (MB-1), 18.6 parts by weight of low density polyethylene resin (LDPE-1) and 51.4 parts by weight of high density polyethylene resin (HDPE-1) Composition.
  • Table 16 shows the evaluation results of the apparent glossiness and the occurrence of uneven peeling of the photographic print of the obtained support for image materials. 6
  • the image material support of the present invention (Examples 77 to 85) can provide a photographic print having a high glossiness, and is an excellent image free from uneven peeling. It can be clearly seen that the support is a material support.
  • the temperature of the resin composition for the upper layer is adjusted when the resin composition for the two-layer resin sheet is melt-extruded and coated from the viewpoint of improving the apparent glossiness and peeling unevenness of the photographic print.
  • the temperature be lower than the temperature of the resin composition constituting the lower layer.
  • the content ratio of additives such as titanium dioxide pigment, coloring pigment, release agent, antioxidant in the lower layer, It can be clearly seen that even if the content ratio of the additive is lower than that, there is no problem in the effect of the present invention, and it is economically advantageous.
  • Example 65 the traveling speed of the base paper was set to the traveling speed shown in Table 17, and the resin composition for the lower layer was the same as that used in Example 81 having a coating thickness of 15 ⁇ m.
  • the same lower layer resin composition (R 15) and the same upper layer resin composition (R 18) as used in Example 81 with a coating thickness of 15 ⁇ m were used as the upper layer resin composition.
  • the procedure was performed in the same manner as in Example 65 except that the thermal soft calendar was used at a pressing temperature of 80 ° C., a linear pressure of the press of 2 O kgf / cm, and the number of series was two.
  • the melt extrusion coating of the resin composition for a two-layer resin sheet was performed by a co-extrusion method as in Example 65.
  • Example 81 the running speed of the base paper was set to the running speed shown in Table 17 and the coating thickness of the upper and lower layers of the two-layer resin sheet was set to the coating thickness shown in Table 17 Except for the above, the same procedure was performed as in Example 81.
  • the processing conditions for the thermal softener treatment were the same as in Example 81: a press temperature of 80 ° C, a press linear pressure of 2 Okgf / cm, and a number of series of 2.
  • the melt extrusion coating of the resin composition for the two-layer resin sheet was performed by a sequential melt extrusion coating method (abbreviated as a sequential method in Table 17) in the same manner as in Example 81.
  • Table 17 shows the evaluation results of the apparent glossiness and the degree of occurrence of uneven peeling of the photographic prints of the supports for image materials obtained in Examples 86 to 96 described above.
  • the thickness of the lower layer is more than 25 times the thickness of the two-layer resin sheet in terms of the effect of improving the glossiness and peeling unevenness of the photographic print. It can be clearly seen that the thickness is preferably 40% or more, more preferably 50% or more.
  • Examples 86 and 89 (each with a base paper traveling speed of 200 m / min), Examples 87 and 90 (each with a base paper traveling speed of 250 m / min), and From the comparison of the results of Example 88 and Example 94 (each of the running speed of the base paper: 300 m / min), if the running speed of the base paper (that is, the manufacturing speed of the support for the image material) increases, In other words, when the running speed of the base paper is 200 m / min or more, further 250 m / min or more, especially 300 m / min or more, the apparent gloss of the photographic print is From the viewpoint of the effect of improving the feel and peeling unevenness, it can be clearly understood that among the supports for the image material of the present invention, the support for the image material in which the surface two-layer resin sheet is formed by the sequential melt extrusion coating method is particularly preferable. Further, the image material support has an image having a high glossiness in appearance. --It is clear that the material and its print are obtained,
  • An ink jet recording material was prepared by coating the following ink image receiving layer on the image material support used in Example 81 and Comparative Example 33 instead of the silver halide color photographic component layer.
  • the ink jet recording material (Example 97 corresponding to the support) having the image material support (Example 81) of the present invention had a high apparent glossiness and was excellent.
  • the ink jet recording material (Comparative Example 51 corresponding to the support) having the image material support (Comparative Example 33) outside the present invention has a problem in that the apparent glossiness is inferior. Met.
  • the ink receiving layer is composed of 10 weights of alkali-treated gelatin having a molecular weight of 70,000. 30 g aqueous gelatin solution, sodium carboxymethyl cellulose (degree of etherification 0.7 to 0.8, viscosity of 2 wt% aqueous solution measured with a B-type viscometer is 5 cp.
  • the following heat transfer type thermal transfer recording image receiving layer was coated on the image material support used in Example 81 and Comparative Example 33 in place of the silver halide color photographic component layer, and It was created.
  • the heat transfer type thermal transfer recording image-receiving material (Example 98 corresponding to the support) having the image material support (Example 81) of the present invention has a high apparent glossiness.
  • the heat transfer type thermal transfer recording image-receiving material (Comparative Example 52 corresponding to the support) having the image material support (Comparative Example 33) out of the present invention has an apparent glossiness. Inferior and problematic.
  • TP-220 manufactured by Nippon Kasei Co., Ltd.
  • KF-393 manufactured by Shin-Etsu Chemical Co., Ltd.
  • solvent xylene
  • the support for an image material of the present invention can provide an image material and a print having a high apparent glossiness and no uneven gloss, and has an improved peeling property from a cooling roll at the time of manufacturing the support to improve unevenness of the peel. It is excellent in productivity and economy because it has no curl, has good curl properties, and is capable of high-speed and stable production.

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Laminated Bodies (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)

Abstract

La surface d'un substrat en papier d'un support de matériau d'image, sur lequel une couche de formation d'image est formée, est recouverte d'une feuille de résine multicouche. La couche supérieure ne contient pas moins de 40 % en poids d'une résine thermoplastique (a) dont le point de fusion est supérieur à 100 °C, et la couche inférieure contient une résine thermoplastique (b) dont le point de fusion n'est pas supérieur à 105 °C ni inférieur au point de fusion de la résine thermoplastique (a). Une fois la surface du substrat recouverte de la feuille de résine multicouche, cette dernière et le substrat sont assemblés par compression sans application de chaleur ou avec maintien de celle-ci du côté de la feuille de résine. Ce support de matériau d'image est extrêment brillant et permet d'obtenir un matériau d'image et une impression n'ayant pas un brillant irrégulier. D'autre part, lors de la fabrication du support, son aptitude au décollement d'un cylindre de refroidissement est améliorée afin d'empêcher un décollement irrégulier. En outre, le support présente d'excellentes caractéristiques d'enroulement et peut être fabriqué de manière stable à vitesse élevée, ce qui permet d'améliorer la productivité et la rentabilité.
PCT/JP1998/000257 1997-01-31 1998-01-23 Support de materiau d'image WO1998034156A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP53270598A JP3866296B2 (ja) 1997-01-31 1998-01-23 画像材料用支持体
DE19880298T DE19880298T1 (de) 1997-01-31 1998-01-23 Trägerunterlage für ein Abbildungsmaterial

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9/19007 1997-01-31
JP1900797 1997-01-31

Publications (1)

Publication Number Publication Date
WO1998034156A1 true WO1998034156A1 (fr) 1998-08-06

Family

ID=11987464

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1998/000257 WO1998034156A1 (fr) 1997-01-31 1998-01-23 Support de materiau d'image

Country Status (3)

Country Link
JP (1) JP3866296B2 (fr)
DE (1) DE19880298T1 (fr)
WO (1) WO1998034156A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10009247C1 (de) * 2000-02-28 2001-10-18 Schoeller Felix Jun Foto Schichtträger

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4845608A (fr) * 1971-10-15 1973-06-29
JPS61132949A (ja) * 1984-11-24 1986-06-20 ジェイムス　リバー　グラフィックス　リミテッド 写真用原紙およびその製造方法
JPH06222499A (ja) * 1993-01-27 1994-08-12 Mitsubishi Paper Mills Ltd 写真用支持体の製造方法
JPH07120868A (ja) * 1993-10-05 1995-05-12 Fuji Photo Film Co Ltd 写真印画紙用支持体
JPH0836237A (ja) * 1994-07-25 1996-02-06 Mitsubishi Paper Mills Ltd 写真印画紙用支持体
JPH08201967A (ja) * 1995-01-31 1996-08-09 Mitsubishi Paper Mills Ltd 画像材料用支持体

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4845608A (fr) * 1971-10-15 1973-06-29
JPS61132949A (ja) * 1984-11-24 1986-06-20 ジェイムス　リバー　グラフィックス　リミテッド 写真用原紙およびその製造方法
JPH06222499A (ja) * 1993-01-27 1994-08-12 Mitsubishi Paper Mills Ltd 写真用支持体の製造方法
JPH07120868A (ja) * 1993-10-05 1995-05-12 Fuji Photo Film Co Ltd 写真印画紙用支持体
JPH0836237A (ja) * 1994-07-25 1996-02-06 Mitsubishi Paper Mills Ltd 写真印画紙用支持体
JPH08201967A (ja) * 1995-01-31 1996-08-09 Mitsubishi Paper Mills Ltd 画像材料用支持体

Also Published As

Publication number Publication date
DE19880298T1 (de) 1999-05-12
JP3866296B2 (ja) 2007-01-10

Similar Documents

Publication Publication Date Title
US6841109B2 (en) Support for imaging material
US5372884A (en) Ink jet recording sheet
JPH11271927A (ja) 画像材料用支持体
JPH06186670A (ja) 写真印画紙用支持体
WO1998034156A1 (fr) Support de materiau d'image
JP3529518B2 (ja) 画像材料用支持体
JP3453717B2 (ja) 画像材料用支持体
JP4014368B2 (ja) 画像材料用支持体
JP3343834B2 (ja) 画像材料用支持体
JP2002055414A (ja) 画像材料用支持体およびその製造方法
JP3350565B2 (ja) 画像材料用支持体
JP2001098492A (ja) 画像材料用支持体
JP2001115396A (ja) 画像材料用支持体
JPH10239796A (ja) 画像材料用支持体
JP3790319B2 (ja) 画像材料用支持体
JP3490119B2 (ja) 画像材料用支持体
JP3244958B2 (ja) 画像材料用支持体
JPH1138554A (ja) 画像材料用支持体
JPH1115107A (ja) 画像材料用支持体
JP3707819B2 (ja) 画像材料用支持体
JPH08286319A (ja) 画像材料用支持体
JP3989117B2 (ja) 画像材料用支持体およびその製造方法
JPH08201967A (ja) 画像材料用支持体
JPH10293378A (ja) 画像材料用支持体
JPH10260499A (ja) 画像材料用支持体

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): DE JP US

WWE Wipo information: entry into national phase

Ref document number: 09155568

Country of ref document: US

RET De translation (de og part 6b)

Ref document number: 19880298

Country of ref document: DE

Date of ref document: 19990512

WWE Wipo information: entry into national phase

Ref document number: 19880298

Country of ref document: DE