WO2006098337A1 - レンチキュラーレンズシートおよびその製造方法並びに転写材用樹脂組成物 - Google Patents
レンチキュラーレンズシートおよびその製造方法並びに転写材用樹脂組成物 Download PDFInfo
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- WO2006098337A1 WO2006098337A1 PCT/JP2006/305058 JP2006305058W WO2006098337A1 WO 2006098337 A1 WO2006098337 A1 WO 2006098337A1 JP 2006305058 W JP2006305058 W JP 2006305058W WO 2006098337 A1 WO2006098337 A1 WO 2006098337A1
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- Prior art keywords
- lenticular lens
- layer
- carbon black
- lens sheet
- less
- Prior art date
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
- G03B21/62—Translucent screens
- G03B21/625—Lenticular translucent screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00009—Production of simple or compound lenses
- B29D11/00278—Lenticular sheets
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0018—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for preventing ghost images
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0012—Arrays characterised by the manufacturing method
- G02B3/0031—Replication or moulding, e.g. hot embossing, UV-casting, injection moulding
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/06—Simple or compound lenses with non-spherical faces with cylindrical or toric faces
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/003—Light absorbing elements
Definitions
- Lenticular lens sheet manufacturing method thereof, and resin composition for transfer material
- the present invention relates to a lenticular lens sheet used for a rear projection display screen, a manufacturing method thereof, and a resin composition for transfer material used in the manufacturing method.
- a lenticular sheet used for a rear projection screen is provided with a light shielding pattern in order to improve contrast.
- a lenticular lens sheet with a light-shielding pattern with a finer pitch than the moire pattern caused by the interference between the pixel and the lenticular lens is also required for the lenticular lens sheet.
- Patent Document 1 Conventionally, as exemplified in Patent Document 1, for example, a light-curing resin having adhesiveness is laminated on the observation surface side of the lenticular sheet, and only the light condensing portion is exposed by exposing from the lens surface. A method has been adopted in which the adhesiveness disappears by curing, and the toner is sprayed from the observation surface side so that the toner adheres only to the part where the adhesive remains, and other than the toner attached to the adhesive part is removed. It was.
- Patent Document 1 when a smaller lens pitch is required for higher image quality and higher definition, the method of Patent Document 1 has a problem that it is difficult to obtain a clear light-shielding pattern of the boundary line. there were.
- the average primary particle size is 2 m.
- a printing method using a transfer sheet characterized in that a colored layer containing the following fine particles is formed.
- this method is used to clarify the boundary Is a suitable method, but because the colored layer contains fine particles other than pigment, the blackness of the light-shielding pattern on the observation surface side decreases, and color reproducibility tends to decrease when projected in a bright room. It was.
- Patent Document 1 Japanese Patent Application Laid-Open No. 59-121033 (Claims, Examples, etc.)
- Patent Document 2 Japanese Patent Laid-Open No. 2003-162006 (Claims, Examples, etc.)
- Patent Document 3 Japanese Patent Laid-Open No. 2004-246352 (Claims, Examples, etc.)
- an object of the present invention is to provide a lenticular lens sheet having a fine light-shielding pattern with high color reproducibility.
- the inventors of the present invention have a fine color reproducibility when the values of & * * and b * are in a certain range when the color coordinates (& **) are measured according to JIS 1: 5600-4.
- a lenticular lens with a light-shielding pattern can be obtained, and the above a * and b * values can be controlled by the particle size of carbon black contained in the light-shielding layer.
- the present invention has been completed.
- the present invention is a lenticular lens sheet characterized in that the average primary particle size of carbon black contained in the light shielding layer is from 1 Onm to 5 Onm.
- the area ratio of carbon black to the entire image in the lenticular lens sheet in which the lens pitch of the lenticular lens is 200 ⁇ m or less and the scanning electron microscope observation image of the cross section of the light shielding layer is 60.
- the color coordinates (a *, b *) are measured in accordance with JIS K5600-4 from the above lenticular lens sheet, which is not less than 95% and not more than 95%, and the observation surface side, the following expressions (1) and (2) are satisfied.
- the above lenticular lens sheet is preferred and included as an embodiment. -2. 0 ⁇ a * ⁇ 2. 0 (1)
- the present invention is a method for producing a lenticular lens sheet, comprising the following steps (1) to (3) in the method for producing the lenticular lens sheet.
- Step (1) a lenticular lens in which a lens shape is formed on one side and the opposite surface is flat; a step of forming a photocurable resin layer on the flat surface of the substrate sheet;
- Step (2) A step of irradiating ultraviolet rays from the surface on which the lens shape is formed, and curing a portion condensed by the lens of the photocurable resin layer formed in Step (1);
- Step (3) The transfer layer of the transfer material is brought into close contact with the partially cured photocurable resin layer surface, and a colored layer containing carbon black having a primary particle size of lOnm or more and 50 nm or less is applied only to the uncured portion.
- the present invention provides a resin composition for a transfer material and a transfer material using the same, wherein the resin thread and the composition are the following components (a) to (c):
- Component (c) a polymer containing an acidic group, a basic group, or a salt thereof,
- mass ratio of component (a) is 60% by mass or more and 90% by mass or less when the total of components (a) to (c) is 100%.
- the present invention also provides a resin composition in which the pigment as component (a) is a carbon black having a particle size of 1 Onm or more and 50 nm or less.
- the present invention is the above-described method for producing a lenticular lens sheet, wherein the transfer material includes a transfer layer having the composition of a resin composition for transfer material according to claim 7.
- the lenticular lens sheet of the present invention is a lenticular lens sheet having high definition and good color reproducibility, and can be advantageously used for a rear projection screen.
- the production method of the present invention can provide a lenticular lens sheet having high definition and good color reproducibility.
- the transfer material of the present invention high definition and good color reproducibility can be obtained.
- a manufacturing method for obtaining a large lenticular lens sheet can be used efficiently.
- FIG. 1 is a scanning electron micrograph of carbon black.
- FIG. 2 The result of the dichroic processing of the photograph in FIG.
- a lens is formed on one side, and a light-shielding layer is formed on the flat surface of the lenticular lens sheet whose opposite surface is flat.
- the lenticular lens sheet used in the present invention preferably has a lens pitch force of 200 / zm or less from the viewpoint of preventing moire patterns.
- the lens shape may be a one-dimensional shape, that is, a cylindrical lens array, or a two-dimensional shape, that is, a convex lens array. Further, as proposed in Patent Document 3, a structure in which two lens layers are laminated may be used.
- the method for producing the lenticular lens sheet is not particularly limited, and a known method is employed.
- a method of processing a thermoplastic resin such as polymethylmethacrylate, polystyrene, polycarbonate, a copolymer of methylmethacrylate and styrene by extrusion molding or injection molding, a photocurable resin or thermoplastic resin.
- An example is a method in which a fat is applied on a base material such as polyethylene terephthalate and then cured by light irradiation while being molded using a mold.
- the above-mentioned photocurable resin is not particularly limited as long as it is a known one, and specific examples of the photocurable resin include acrylic acid ester with a photo radical generator, epoxy ester And oxetane esters containing a photoacid generator. Specific examples of the thermosetting resin include epoxy resin, melamine resin, and urethane resin.
- the light-shielding layer prevents the phenomenon that the lens surface force leaks to the observation surface side when the light is diffusely reflected and the image looks double, and suppresses the reflection of external light incident outside the exit area. Layer.
- the average primary particle size of the carbon black contained in the light-shielding layer is lOnm or more and 50nm or less. It is important that it is 1Onm or more and 30nm or less. If the average primary particle size of the carbon black is less than 10 nm, the aggregation of the particles becomes large and it becomes difficult to disperse. On the other hand, when the average primary particle size exceeds 50 nm, it becomes reddish black, and when the lenticular lens sheet is observed with the observation surface side force, it shows a reddish appearance and color reproducibility is reduced. Will be.
- Carbon black blended in the light shielding layer formed on the lenticular lens sheet of the present invention is not particularly limited as long as the average primary particle size is lOnm or more and 50nm or less, but from the viewpoint of dispersibility, generally the nitrogen adsorption specific surface area is used as an index of the physical properties of the carbon black is more preferably 50 m 2 Zg least 500m it is preferably a 2 Zg less tool 200 meters 2 Zg least 40 0 m 2 / g or less.
- the pH value of carbon black is preferably 2.5 or more and 8.0 or less from the viewpoint of dispersibility and color reproducibility, and more preferably 2.5 or more and 7.0 or less.
- Examples of the method for measuring the average primary particle size of carbon black contained in the light shielding layer include a method of observing a cross section of the light shielding layer and measuring the particle size. Specifically, this is a method in which the cross section of the light shielding layer is observed with an electron microscope, the particle size of carbon black on the obtained image is measured, and the average primary particle size is calculated in consideration of the magnification of the image.
- the number of particles to be measured may be the number of all carbon particles present on the image, or a certain number of randomly extracted particles. When extracting at random, it is necessary to measure the particle size of at least 30 carbon particles. In order to perform highly accurate measurement, it is preferable to measure the particle size using an electron microscope observation image with a magnification of 50,000 times or more.
- the particles to be measured in the present invention are primary particles.
- the primary particles of carbon black are aggregated to form aggregates. This means that it is necessary to measure the particle size of each carbon black forming the aggregate.
- the composition of the components constituting the light shielding layer is not particularly limited as long as the average primary particle size of carbon black is not less than lOnm and not more than 50 nm.
- a composition comprising a black and a polymer.
- the polymer described above is a component necessary for improving the dispersibility of carbon black and maintaining the strength as a film.
- the polymer is not particularly limited as long as it is a known polymer.
- polyester resin, petital resin, acrylic resin, amino resin, epoxy resin, polyurethane resin, chlorinated resin, fluorine resin, silicon examples thereof include cocoa resin, phenol resin, and fiber-based resin.
- these resins those having a polar group or a salt of a polar group are preferable.
- Specific examples of the polar group include a hydroxyl group, a carboxyl group, a sulfonyl group, an acid amide group, and an amino group.
- polar group salt examples include sodium sulfonate and acid amide amine salt. These coffins can be used alone, but can also be used as a mixture of two or more.
- a polyester acid amidoamine salt is preferred in order to improve the dispersibility of bonbon black, but in order to maintain the strength as a film, a petital resin is preferred. Is also possible.
- the light-shielding layer may contain a leveling agent, an inorganic filler, and the like as long as the effects of the present invention are not impaired.
- carbon black of lOnm or less or 50 nm or more is naturally included so that the average primary particle diameter satisfies the range of lOnm or more and 50 nm or less!
- the area ratio of the carbon black to the entire image is 60% or more and 95% or less in the scanning electron microscope observation image of the cross section of the light shielding layer. 2.
- the lenticular lens sheet described in 2 above if the volume ratio of carbon black contained in the light shielding layer is too large, the light shielding layer becomes brittle, and if it is too small, the light shielding performance may be lowered.
- An example of a method for measuring the volume ratio of carbon black contained in the light shielding layer is a method of observing a cross section of the light shielding layer.
- the area of the carbon black is determined according to a criterion for determining the boundary between the bonbon black portion and the other portion.
- the ratio will be different.
- the criteria for the dichroic treatment used in the present invention are described below.
- the photograph in FIG. 1 is an image observed with a scanning electron microscope
- the photograph in FIG. 2 is an image obtained by subjecting the photograph in FIG. 1 to dichroic processing.
- the black part is the part occupied by carbon black.
- the processing conditions for dichroic processing are determined so that results equivalent to the above results can be obtained.
- the volume ratio of carbon black having a primary particle size of lOnm or more and 50nm or less contained in the light shielding layer is such that the carbon black with respect to the entire image within a certain range in the scanning electron microscope observation image of the light shielding layer cross section.
- the area ratio it is preferably 60% or more and 95% or less, more preferably 70% or more and 90% or less.
- the thickness of the light shielding layer is 0.5 111 or more and 1
- 0 ⁇ m or less is preferable 1 ⁇ m or more and 5 ⁇ m or less is more preferable ⁇ .
- the lenticular lens sheet of the present invention satisfies the following formulas (1) and (2) when the color coordinates (a *, b *) are measured from the observation surface side according to JIS K5600-4.
- JIS K5600-4 JIS K5600-4
- the color is uniquely characterized with respect to the defined observer and the defined light source by a single point of solid coordinates made of three vectors that are perpendicular to each other.
- the In JIS K5600-4 from the various color coordinates recommended by the CIE (the Commission Internaionale de 1 'Eclairage) force S, (CIE1964) color coordinates of the auxiliary standard color system (see CIE Publication No. 15), ( CIE1976)
- the color coordinates of the L * a * b * color space are defined for coating colorimetry.
- the color coordinates of the (CIE1976) L * a * b * color space are used, and the color coordinates are calculated by the following equation.
- X ⁇ ⁇ represents the 10 degree tristimulus value of the coating.
- ⁇ ⁇ ⁇ is the 10 degree tristimulus value of the perfect diffuse reflector under the selected standard light.
- the value of a * when the value of a * is less than 2.0, the color is close to green, and when it is greater than 2.0, the color is close to red, so that the color reproducibility tends to decrease. Also, the value of a * is 2.
- the resin composition of the present invention is a resin composition for forming a colored layer contained in a transfer layer of a transfer material used for producing a lenticular lens sheet with a light-shielding pattern, and comprises the following components: (a)-(c);
- Component (c) a polymer containing an acidic group, a basic group, or a salt thereof,
- the pigment of component (a) is a component for imparting light shielding properties to the light shielding layer, and is not particularly limited as long as it is a known pigment.
- a pigment for example, zinc white, lead white, titanium white, basic lead sulfate, acid White pigments such as antimony, black pigments such as carbon black, lamp black, acetylene black, ivory black, bone black, graphite, red pigments such as cadmium red, antimony vermilion, red lake, yellow lead, zinc yellow, cadmium Yellow pigments such as yellow, yellow iron oxide, yellow lake, blue pigments such as bitumen, ultramarine blue, cobalt blue, phthalocyanine dyes, green pigments such as chrome green, acid chrome, emerald green, zinc green, guinea green, Oxidized iron, petal, brown pigments such as ocher, aluminum powder, bronze powder, zinc powder, lead powder and other metal pigments, lime carbonate powder, calcium carbonate, sulfur Barium, alumina, clay,
- the pigment of component (a) when added in a small amount, deteriorates the color reproducibility due to a decrease in light-shielding properties. When the amount is too large, the film strength becomes low and a brittle film is formed. Mass against objects It is important that the ratio is not less than 60% by mass and not more than 90% by mass, more preferably not less than 70% by mass and not more than 85% by mass!
- the carbon black used as a pigment components (a) there is no particular limitation on the carbon black used as a pigment components (a), from the viewpoint of dispersibility, the nitrogen adsorption specific surface area is used as an index of general carbon black properties is less than 5 0 m 2 Zg least 500 meters 2 Zg It is more preferable that it is 200 m 2 Zg or more and 400 m 2 Zg or less.
- the pH value of carbon black is preferably 2.5 or more and 8.0 or less from the viewpoint of dispersibility and color reproducibility, and more preferably 2.5 or more and 7.0 or less.
- Examples of a method for measuring the average primary particle size of carbon black used as the pigment of component (a) include a method of measuring the particle size by observing the cross section of the light shielding layer. Specifically, this is a method in which the cross section of the light shielding layer is observed with an electron microscope, the particle size of carbon black on the obtained image is measured, and the average primary particle size is calculated in consideration of the magnification of the image.
- the number of particles to be measured may be the number of all carbon particles present on the image, or a certain number of randomly extracted particles. In the case of random extraction, it is necessary to measure the particle size of at least 30 carbon particles. In addition, in order to perform highly accurate measurement, it is preferable to measure the particle size using an electron microscope observation image with a magnification of 50,000 times or more.
- the particles to be measured in the present invention are primary particles.
- the primary particles of carbon black are aggregated to form aggregates. This means that it is necessary to measure the particle size of each carbon black forming the aggregate.
- the hydroxyl group-containing polymer of component (b) is a component necessary for ensuring the film strength of the light shielding layer, and is not particularly limited as long as it is a known polymer containing a hydroxyl group.
- Steal resin, polyvinyl alcohol resin, petital resin, acrylic resin, amino resin, epoxy resin, polyurethane resin, chlorinated resin, fluorine resin, silicon resin, phenol Examples include noble resin and fiber-based resin. From the viewpoint of transferability and pigment dispersion stability, petital resin, acrylic resin, and polyester resin are preferable, and petital resin is more preferable.
- the mass ratio of the hydroxyl group-containing polymer of component (b) is preferably 5 mass% or more and 40 mass% or less when the total of components (a) to (c) is 100%. % To 20% by mass is more preferable.
- the polymer containing the acidic group, basic group, or salt thereof of component (c) is a component necessary for improving the dispersibility of the pigment, and is an acidic group, basic group, or any of these.
- the polymer is not particularly limited as long as it is a known polymer containing a salt, and examples thereof include acrylic resin and saturated or unsaturated polyester resin.
- the acidic group include a carboxyl group and a sulfonic acid group.
- Examples of the salt of the acidic group include a lithium salt, a sodium salt, and a potassium salt.
- Examples of basic groups include amino groups, imide groups, and acid amide groups.
- Examples of basic group salts include quaternary ammonium chloride salts and acid amidoamine salts.
- the rosin composition of the present invention may use a diluent depending on the purpose.
- the diluent is not particularly limited as long as it is a diluent used in general resin paints, but ketone compounds such as acetone, methyl ethyl ketone, cyclohexanone; methyl acetate, ethyl acetate, butyl acetate, ethyl lactate, Ester compounds such as methoxyethyl acetate; ether compounds such as jetyl ether, ethylenglyconoresmethinoreethenole, ethinorecellonolev, butinorecellosonoleb, phenenocellosolve, dioxane; toluene, xylene, etc.
- Aromatic compounds Aliphatic compounds such as pentane and hexane; Halogen-based hydrocarbons such as methylene chloride, black benzene, and chloroform; Alcohol compounds such as methanol, ethanol, normal propanol, and isopropanol; water, etc. Can be mentioned.
- the resin composition according to the present invention may contain a leveling agent, an inorganic filler, and the like within a range not impairing the effects of the present invention. If necessary, it may be coated with a diluent.
- the resin composition of the present invention can be mixed by a known mixing method.
- Specific examples include propeller stirring, roll milling, ball milling, bead milling, and ultrasonic irradiation, which can be selected as appropriate.
- ball mills and bead mills are preferable from the viewpoints of practicality and dispersibility.
- the present invention also provides a transfer material used in a method for producing a lenticular lens sheet.
- the transfer material according to the present invention is obtained by laminating a transfer layer including at least a light-shielding layer made of the resin composition according to claim 1 on a base film, and is a transfer layer including a binder layer, a protective layer, and the like. May be.
- As the structure of the transfer layer only the light-shielding layer, protective layer Z light-shielding layer, light-shielding layer Z binder layer and the like can be mentioned.
- the base film used for the transfer material according to the present invention can be used without particular limitation as long as it is a film used for a normal transfer foil having sufficient self-holding property.
- the base film a polyethylene terephthalate film, a polypropylene film, a polycarbonate film, a polystyrene film, a polyamide film, a polyimide imide film, a polyethylene film, a polychlorinated bure film, a fluorine-containing resin film, etc.
- Resin film Artificial resin film such as cellulose acetate film; Western paper such as cellophane paper and glassine paper; Other film-like materials such as Japanese paper; and these composite film-like materials and composite sheet-like materials.
- the thickness of the base film is not particularly limited, but it is usually preferable to be in the range of 4 to 150 ⁇ m in order to suppress the occurrence of wrinkles and cracks. 12 to: In the range of LOO ⁇ m More preferably, it is more preferably in the range of 25-50 / ⁇ ⁇ .
- release treatment can be performed on at least one side of the base film.
- the intensive release process can be performed by a known method by appropriately selecting a release polymer or wax.
- treatment agents used for powerful mold release treatment include releasable waxes such as paraffin wax; silicon-based resin, melamine-based resin, urea-based resin, urea-melamine-based resin, cellulose-based resin, benzoguanamine System Which release resin; various surfactants and the like. These may be used alone or mixed with two or more solvents, etc., and applied to the base film according to ordinary printing methods such as gravure printing, screen printing, and offset printing, dried, and cured as necessary. (Examples include curing means such as heating, ultraviolet irradiation, electron beam irradiation, and radiation irradiation) to form a releasable base film.
- a tool used in an impregnation method, a relief printing method, a lithographic printing method, an intaglio printing or the like is used. It can be formed by the coating method used, the spray method of spraying on the substrate, curtain flow coating, or the like.
- the thickness of the light-shielding layer which is the composition of the present invention according to claim 1 or 2, is preferably 0.1 ⁇ m or more and 10 ⁇ m or less, more preferably 1 ⁇ m or more and 5 ⁇ m or less. ⁇ .
- the method for forming the light shielding layer on the lenticular lens sheet of the present invention is not particularly limited as long as it is a method capable of forming the light shielding layer having the above-described configuration, but includes the following steps (1) to (3). Adopting a sheet manufacturing method is also preferable in terms of color reproducibility.
- Step (1) A step of forming a photocurable resin layer on a flat surface of a lenticular lens sheet having a lens shape formed on one surface and a flat opposite surface;
- Step (2) A step of irradiating ultraviolet rays from the surface on which the lens shape is formed, and curing a portion condensed by the lens of the photocurable resin layer formed in Step (1);
- Step (3) A transfer material is adhered to the surface of the partially cured photocurable resin layer, and a colored layer containing carbon black having a primary particle size of lOnm or more and 50 nm or less is transferred only to the uncured portion. Forming a light shielding layer.
- Step (1) is a step of forming a photocurable resin layer on a flat surface of a lenticular lens base sheet having a lens shape formed on one side and a flat opposite surface.
- a method of forming a resin layer it is used in impregnation, letterpress printing, lithographic printing, intaglio printing, etc.
- the film can be formed by a coating method using a roll, a spray method of spraying on a substrate, a curtain flow coat method, or the like.
- a method of using a transfer material as a method for forming a photocurable resin layer on a substrate may be used.
- the curable resin composition used for forming the photocurable resin layer may be coated with a diluent.
- the diluent can be added in any amount according to the thickness of the layer made of the desired cured resin composition.
- the powerful diluent is not particularly limited as long as it is a diluent used in general grease coatings, but ketone compounds such as acetone, methyl ethyl ketone, methyl isobutyl ketone, and cyclohexanone; methyl acetate, Ester compounds such as ethyl acetate, butyl acetate, ethyl lactate and methoxyethyl acetate; ethers such as jetinoreethenore, ethyleneglycolenoresmethinoleethenore, ethinorecerosoleb, butinorecerosolve, ferrce mouthsolve, dioxane Compounds; Aromatic compounds such as tol
- the lenticular lens base sheet having a lens shape formed on one side and a flat opposite surface is not particularly limited as long as it is a known lenticular lens sheet having a lens shape formed on one side and a flat opposite surface.
- the lens shape may be a one-dimensional shape, that is, a cylindrical lens array, or a two-dimensional shape, that is, a convex lens array. Further, as proposed in Patent Document 3, a structure in which two lens layers are laminated may be used.
- an ultraviolet ray is irradiated from the surface covering the lens shape of the laminate composed of the lenticular lens substrate sheet obtained in the above step (1) and a photocurable resin layer.
- This is a step of curing a part of the photocurable resin layer condensed by the lens, and a step of curing only a portion where the light shielding layer is not desired to be laminated.
- Specific examples of ultraviolet ray generation sources include a low-pressure mercury lamp, a high-pressure mercury lamp, a xenon lamp, and a metal nitride lamp.
- the method of irradiating with ultraviolet rays may be either batch type or continuous type, but it is preferable to irradiate ultraviolet rays from the direction perpendicular to the lens surface.
- ultraviolet rays may be diffuse light, but in parallel I prefer the light.
- the method of irradiating parallel light is not particularly limited as long as it is a known method, and examples thereof include a method of irradiating through a Fresnel lens and a method of irradiating through a slit.
- step (3) the lenticular lens substrate sheet obtained in step (2) and the photocurable resin layer of the laminate comprising the partially cured photocurable resin layer are transferred onto the surface.
- the material is brought into close contact, and a colored layer having a primary particle size of carbon black of lOnm or more and 50 nm or less is transferred only to an uncured portion to form a light shielding layer.
- the method for bringing the colored layer surface of the transfer material into close contact is not particularly limited as long as it is a known method, and examples thereof include a method of pressure bonding using a roll.
- the roll when pressing using a roll, the roll may be at a room temperature of about 25 ° C, but a method of heating the roll to about 30 to 80 ° C can also be used.
- a transfer material having a colored layer in which the primary particle size of carbon black, which is one of the present invention, is 1 Onm or more and 50 nm or less will be described.
- This transfer material can be used as the transfer material described in the step (3) in the method for manufacturing a lenticular lens sheet with a light-shielding pattern including the steps (1) to (3) described above.
- the transfer material according to the present invention is obtained by laminating a transfer layer including at least a colored layer on a base film, and may be a transfer layer including a single layer, a protective layer, and the like.
- a transfer layer including a single layer, a protective layer, and the like.
- the base film used for the transfer material according to the present invention is not particularly limited as long as it is a film used for a normal transfer foil having sufficient self-holding property.
- the base film include synthesis of a polyethylene terephthalate film, a polypropylene film, a polycarbonate film, a polystyrene film, a polyamide film, a polyimide imide film, a polyethylene film, a polychlorinated bure film, a fluorine-based resin film, and the like.
- Resin film Artificial resin film such as cellulose acetate film; Western paper such as cellophane paper and glassine paper; Other film-like materials such as Japanese paper; and these composite film-like materials and composite sheet-like materials.
- the thickness of the base film is not particularly limited, but to suppress the occurrence of wrinkles and cracks. In general, it is preferably in the range of 4 to 150 ⁇ m, 12 to: more preferably in the range of LOO ⁇ m, and further preferably in the range of 25 to 50 / ⁇ ⁇ .
- a release treatment can be performed on at least one side of the base film.
- the intensive release process can be performed by a known method by appropriately selecting a release polymer or wax.
- treatment agents used for powerful mold release treatment include releasable waxes such as paraffin wax; silicon-based resin, melamine-based resin, urea-based resin, urea-melamine-based resin, cellulose-based resin, benzoguanamine
- releasable rosins such as system rosins; various surfactants.
- Examples include curing means such as heating, ultraviolet irradiation, electron beam irradiation, and radiation irradiation) to form a releasable base film.
- a coating method using a roll used in an impregnation method a relief printing method, a lithographic printing method, an intaglio printing, or a spray that is sprayed on a substrate. It can be formed by a method, a curtain flow coat or the like.
- the colored layer contained in the transfer material according to the present invention needs to have a primary particle size of carbon black contained in the colored layer of lOnm or more and 50 nm or less.
- a primary particle size of carbon black contained in the colored layer of lOnm or more and 50 nm or less.
- the average primary particle size is less than lOnm, the aggregation of the particles becomes large and becomes dispersed, which is not preferable.
- the average primary particle diameter exceeds 50 nm, the color becomes reddish black. Therefore, when the lenticular lens sheet is observed from the observation surface side, the reddish appearance appears and the color reproducibility is lowered, which is not preferable.
- the thickness of the colored layer is reduced, the light shielding performance is lowered, and when the thickness is increased, the aspect ratio in the width direction and the height direction is increased, so that the colored layer is easily broken.
- the thickness of the colored layer is preferably from 0.5 111 to 10 ⁇ m, more preferably from 1 ⁇ m to 5 ⁇ m.
- the composition of the colored layer is not particularly limited as long as the average primary particle size of the carbon black is not less than lOnm and not more than 50nm, but is basically a composition containing carbon black and a polymer. Polymers improve the dispersibility of carbon black and as a membrane It is a component necessary for maintaining strength.
- the polymer is not particularly limited as long as it is a known polymer. For example, a polyester resin, a petal resin, an acrylic resin, an amino resin, an epoxy resin, a polyurethane resin, a chlorinated resin, a fluorine resin. Examples thereof include fat, silicon resin, phenol resin, and fiber-based resin. Of these, those having polar groups or salts of polar groups in these resins are preferred.
- the polar group include a hydroxyl group, a carboxyl group, a sulfol group, an acid amide group, and an amino group.
- Specific examples of the salt of the polar group include sodium sulfonate and an acid amidoamine salt. These coffins can also be used alone. The force can also be used as a mixture of two or more kinds.
- a polyester acid amidoamine salt is preferred for improving the dispersibility of carbon black, while a petal resin is preferred for maintaining the strength as a film. Therefore, it is also possible to use a mixture thereof. is there.
- the light-shielding layer may contain carbon black, leveling agent, inorganic filler, or the like having an lOnm or less or 50 nm or more as long as the effects of the present invention are not impaired.
- a diluent may be added for coating. At this time, the diluent can be added in an arbitrary amount according to the film thickness of the target cured resin composition.
- the diluent is not particularly limited as long as it is a diluent used in general resin coatings, but ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, and cyclohexanone.
- Ester compounds such as methyl acetate, ethyl acetate, butyl acetate, ethyl lactate, methoxyethyl acetate; jetyl ether, ethylene glycol dimethyl ether, ethinorecero sonoleb, butinorecero sonoleb, phenyl mouth Ether compounds such as sorb and dioxane; Aromatic compounds such as toluene and xylene; Aliphatic compounds such as pentane and hexane; Halogen hydrocarbons such as methylene chloride, black benzene, and black form; Methanol, ethanol, normal Examples include alcohol compounds such as propanol and isopropanol, and water. It is possible.
- the colored layer contains the following components (a) to (c):
- Component (c) a polymer containing an acidic group, a basic group, or a salt thereof,
- the mass ratio of component (a) pigment is 60% by mass or more and 90% by mass or less
- the pigment as component (a) is More preferably, it is made of a resin composition for transfer material which is carbon black having a particle size of lOnm or more and 50 nm or less.
- the colored layer composition having the composition shown in Table 1 and Table 2 was kneaded in a ball mill for 24 hours, and then the solid content film thickness was 2 ⁇ m on a polyethylene terephthalate film having a thickness of 50 ⁇ m. After coating, the transfer film 2 was prepared by drying at 100 ° C. for 2 minutes.
- Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Carbon Black A * 1 (wt%) 70 80 0 0 0 Carbon Black B * 2 (wt%) 0 0 70 0 0
- a cylindrical lens having a pitch of 150 ⁇ m is arranged on one side, and the other side is a flat surface of a lenticular mirror lens, and the transfer film 1 is laminated on the flat surface using a laminator (equipment: MRK-650Y type) (Uses a laminating device manufactured by MU-SEI), and then exposes from the lens surface (using an exposure device manufactured by H TE-3000B, HI-TECH, irradiation intensity 10 mW / cm 2 , irradiation dose 15 mJ / cm 2 ) Only the U condensing part was partially cured. [0079] Further, after peeling off the base film of the transfer film 1, the colored layer surface of the transfer film 2 was laminated using a laminator on the partially cured photocurable resin layer.
- UV exposure irradiation intensity 100 mW / cm 2 , irradiation amount 300 mJ / cm 2
- UV exposure was performed from the light shielding layer side to produce a lenticular lens sheet with a light shielding pattern did.
- Carbon particle size The obtained film was observed with a scanning electron microscope, and the average primary particle size of 30 randomly extracted carbon blacks was measured.
- Tables 1 and 2 show the results obtained by the above evaluation methods. As a result, a lenticular lens with a light-shielding pattern with good color reproducibility can be obtained when the average primary particle size of carbon black is 10 nm or more and 50 ⁇ m or less, as shown in the results of Examples 1 to 3.
- the average primary particle size of carbon black is 10 nm or more and 50 ⁇ m or less, as shown in the results of Examples 1 to 3.
- the transfer material cage of the present invention By providing a colored layer comprising a fat composition, it is clear that a fine light-shielding pattern with high blackness can be obtained.
- Example 2 The same operation as in Example 1 was performed except that a lenticular lens sheet having an elliptical shape (length 30 m, width 13 m, length pitch 150 m, width pitch 30 m) was used. As a result of the evaluation, the color reproducibility was excellent.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2007508167A JPWO2006098337A1 (ja) | 2005-03-15 | 2006-03-14 | レンチキュラーレンズシートおよびその製造方法並びに転写材用樹脂組成物 |
US11/908,706 US8071672B2 (en) | 2005-03-15 | 2006-03-14 | Lens sheet, process for producing the same, and resin composition for transfer material |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2005-073989 | 2005-03-15 | ||
JP2005073989 | 2005-03-15 | ||
JP2005218947 | 2005-07-28 | ||
JP2005-218947 | 2005-07-28 |
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WO2006098337A1 true WO2006098337A1 (ja) | 2006-09-21 |
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PCT/JP2006/305058 WO2006098337A1 (ja) | 2005-03-15 | 2006-03-14 | レンチキュラーレンズシートおよびその製造方法並びに転写材用樹脂組成物 |
Country Status (5)
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US (1) | US8071672B2 (ja) |
JP (1) | JPWO2006098337A1 (ja) |
KR (1) | KR100901678B1 (ja) |
TW (1) | TWI432879B (ja) |
WO (1) | WO2006098337A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2008089798A (ja) * | 2006-09-29 | 2008-04-17 | Nippon Paper Chemicals Co Ltd | 遮光層転写シート |
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KR20230098152A (ko) * | 2020-10-29 | 2023-07-03 | 오츠카 가가쿠 가부시키가이샤 | 액정 폴리머 조성물, 액정 폴리머 성형체 및 전기 전자 기기 |
Citations (5)
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JPH0534829A (ja) * | 1991-07-29 | 1993-02-12 | Toppan Printing Co Ltd | 透過型スクリーンの遮光部形成方法 |
JPH06110132A (ja) * | 1992-09-29 | 1994-04-22 | Toppan Printing Co Ltd | 反射スクリーンの製造方法 |
JPH1020403A (ja) * | 1996-07-05 | 1998-01-23 | Mitsubishi Rayon Co Ltd | 投写スクリーン |
JP2003162006A (ja) * | 2001-11-28 | 2003-06-06 | Toppan Printing Co Ltd | 転写シート及びそれを用いた透過型スクリーン用レンズシートの製造方法並びに透過型スクリーン用レンズシート |
JP2005037693A (ja) * | 2003-07-15 | 2005-02-10 | Toppan Printing Co Ltd | 転写シート及びこの転写シートを用た遮光層を形成したマイクロレンズアレイシート製造方法、並びにマイクロレンズアレイシート |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2513830B2 (ja) * | 1989-03-20 | 1996-07-03 | 富士通株式会社 | 熱転写インクシ―ト |
US5342731A (en) * | 1990-11-21 | 1994-08-30 | Polaroid Corporation | Laminar thermal imaging medium actuatable in response to intense image-forming radiation utilizing polymeric hardenable adhesive layer that reduces tendency for delamination |
JP3822361B2 (ja) | 1998-07-10 | 2006-09-20 | 株式会社日立製作所 | 配光制御素子およびこれを備えた表示装置 |
JP4068892B2 (ja) * | 2002-05-20 | 2008-03-26 | 富士フイルム株式会社 | 画像形成材料 |
-
2006
- 2006-03-14 KR KR1020077021164A patent/KR100901678B1/ko not_active IP Right Cessation
- 2006-03-14 WO PCT/JP2006/305058 patent/WO2006098337A1/ja active Application Filing
- 2006-03-14 JP JP2007508167A patent/JPWO2006098337A1/ja active Pending
- 2006-03-14 TW TW095108567A patent/TWI432879B/zh not_active IP Right Cessation
- 2006-03-14 US US11/908,706 patent/US8071672B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0534829A (ja) * | 1991-07-29 | 1993-02-12 | Toppan Printing Co Ltd | 透過型スクリーンの遮光部形成方法 |
JPH06110132A (ja) * | 1992-09-29 | 1994-04-22 | Toppan Printing Co Ltd | 反射スクリーンの製造方法 |
JPH1020403A (ja) * | 1996-07-05 | 1998-01-23 | Mitsubishi Rayon Co Ltd | 投写スクリーン |
JP2003162006A (ja) * | 2001-11-28 | 2003-06-06 | Toppan Printing Co Ltd | 転写シート及びそれを用いた透過型スクリーン用レンズシートの製造方法並びに透過型スクリーン用レンズシート |
JP2005037693A (ja) * | 2003-07-15 | 2005-02-10 | Toppan Printing Co Ltd | 転写シート及びこの転写シートを用た遮光層を形成したマイクロレンズアレイシート製造方法、並びにマイクロレンズアレイシート |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008089798A (ja) * | 2006-09-29 | 2008-04-17 | Nippon Paper Chemicals Co Ltd | 遮光層転写シート |
Also Published As
Publication number | Publication date |
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KR100901678B1 (ko) | 2009-06-08 |
JPWO2006098337A1 (ja) | 2008-08-21 |
US8071672B2 (en) | 2011-12-06 |
US20090052025A1 (en) | 2009-02-26 |
TWI432879B (zh) | 2014-04-01 |
TW200643602A (en) | 2006-12-16 |
KR20070104470A (ko) | 2007-10-25 |
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