# US 10,245,780 B2 · Embossed film, sheet film, transfer copy, and method for producing embossed film > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,245,780 B2 - Document ID: US10245780B2 - Status: Granted - Kind: B2 - Application number: 15/523,182 - Filed: 2015-10-28 - Published: 2017-11-16 - Granted: 2019-04-02 - Earliest claimed: 2014-10-28 - Assignees: Dexerials Corporation - Applicants: Dexerials Corporation - Inventors: Yutaka Muramoto; Masanao Kikuchi - Web page: https://patentgrep.com/patent/US10245780B2 ## CPC - G03F 7/0002: {Lithographic processes using patterning methods other than those involving the exposure to radiation, e.g. by stamping} - B05D 1/28: performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers - B29C 59/022: {characterised by the disposition or the configuration, e.g. dimensions, of the embossments or the shaping tools therefor} - B29C 59/046: {for layered or coated substantially flat surfaces} - B05D 1/40: Distributing applied liquids or other fluent materials by members moving relatively to surface - B05D 2252/02: of indefinite length - B29C 35/10: for articles of indefinite length - B29C 2035/0827: {using UV radiation} - B29C 2059/023: {Microembossing} - B29K 2105/16: Fillers - G03F: PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR; (phototypographic composing devices B41B; photosensitive materials or processes for photographic purposes G03C; electrophotography, sensitive layers or processes therefor G03G) - B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02) - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS ## Abstract There is provided an embossed film in which the frequency of loss of concavities is smaller, the embossed film including: a film main body; and a plurality of concavities formed on a surface of the film main body. A diameter of an opening surface of the concavity is larger than a visible light wavelength, an arrangement pattern of the concavities has periodicity along a length direction of the film main body, and the difference between the rate of loss of concavities in one end portion of the film main body and the rate of loss of concavities in the other end portion of the film main body is 10 ppm or less. ## Claims ### Claim 1 An embossed film comprising: a film main body having a width direction and a length direction, and being a long-length film in the length direction; and a plurality of concavities formed on a surface of the film main body, wherein a diameter of an opening surface of the concavity is larger than a visible light wavelength, wherein an arrangement pattern of the concavities has periodicity along the length direction of the film main body, and wherein a difference between a rate of loss of concavities in one end portion of the film main body in the length direction and a rate of loss of concavities in the other end portion of the film main body in the length direction is 10 ppm or less. ### Claim 2 (depends on 1) The embossed film according to claim 1, wherein the rate of loss of concavities is calculated on the basis of concavities in an area corresponding to the same arrangement pattern in one period of the arrangement pattern. ### Claim 3 (depends on 1) The embossed film according to claim 1, wherein the concavities formed on the film main body have substantially the same shape. ### Claim 4 (depends on 1) The embossed film according to claim 1, wherein the arrangement pattern of the concavities is a lattice form. ### Claim 5 (depends on 1) The embossed film according to claim 1, wherein the number density of the concavities is 50,000,000/cm2 or less. ### Claim 6 (depends on 1) The embossed film according to claim 1, wherein the film main body includes a coating layer made of an inorganic compound in at least part of a surface including an interior of the concavity. ### Claim 7 (depends on 1) The embossed film according to claim 1, wherein the film main body is formed of a hardenable resin or a plastic resin. ### Claim 8 (depends on 1) A sheet film formed by cutting the embossed film according to claim 1 into a plurality of sheets. ### Claim 9 (depends on 1) A transfer copy, wherein, using the embossed film according to claim 1 or a sheet film formed by cutting the embossed film into a plurality of sheets, a minute solid body is transferred in a position corresponding to the arrangement pattern. ### Claim 10 (depends on 8) A transfer copy, wherein, using the sheet film formed by cutting the embossed film according to claim 8, a minute solid body is transferred in a position corresponding to the arrangement pattern. ### Claim 11 (depends on 1) The embossed film according to claim 1, wherein the embossed film is an embossed film used in printed electronics or a field of application of printed electronics. ### Claim 12 (depends on 1) The embossed film according to claim 1, wherein the embossed film is an embossed film for medical treatment or bioscience. ### Claim 13 (depends on 1) The embossed film according to claim 1, wherein the embossed film is an embossed film for health care. ### Claim 14 (depends on 1) The embossed film according to claim 1, wherein the embossed film is an embossed film for life science. ### Claim 15 (depends on 1) The embossed film according to claim 1, wherein the embossed film is an embossed film for an optical element. ### Claim 16 (depends on 1) The embossed film according to claim 1, wherein the embossed film is an embossed film for a battery. ### Claim 17 (depends on 1) The embossed film according to claim 1, wherein the embossed film is an embossed film used in an energy-related field or a vehicle-related field. ### Claim 18 A method for producing an embossed film, comprising: forming a plurality of convexities on a peripheral surface of a circular cylindrical or circular columnar master; and pressing the master against a transfer destination film while rotating the master to transfer concavities corresponding to a shape of the peripheral surface of the master to the transfer destination film and thereby producing a film main body having a width direction and a length direction, and being a long-length film in the length direction, wherein a diameter of an opening surface of the concavity is larger than a visible light wavelength, and wherein a difference between a rate of loss of concavities in one end portion of the film main body in the length direction and a rate of loss of concavities in the other end portion of the film main body in the length direction is 10 ppm or less. ### Claim 19 A transfer copy comprising: a base material having a width direction and a length direction, and being a long-length film in the length direction; and a plurality of minute solid bodies transferred to a surface of the base material, wherein an arrangement pattern of the minute solid bodies has periodicity along the length direction of the base material, wherein the rate of loss of the minute solid bodies is less than 1% of a total number of the minute solid bodies, and wherein the total number of the minute solid bodies is the number of the minute solid bodies when the minute solid bodies arranged in the arrangement pattern have no loss. ### Claim 20 (depends on 19) The transfer copy according to claim 19, wherein the transfer copy is used in printed electronics, and a field of application and a related field of printed electronics. ### Claim 21 (depends on 19) The transfer copy according to claim 19, wherein the transfer copy is used as a functional film or a functional device. ### Claim 22 (depends on 19) The transfer copy according to claim 19, wherein the transfer copy is used as a biosensor or a diagnostic device. ### Claim 23 (depends on 19) The transfer copy according to claim 19, wherein the transfer copy is used as an optical element. ### Claim 24 (depends on 19) The transfer copy according to claim 19, wherein the transfer copy is used in a battery-related or energy-related field. ### Claim 25 (depends on 19) The transfer copy according to claim 19, wherein the transfer copy is used in a vehicle-related field. ### Claim 26 A transfer copy comprising: a base material having a width direction and a length direction, and being a long-length film in the length direction; and a plurality of minute solid bodies transferred to a surface of the base material, wherein an arrangement pattern of the minute solid bodies has periodicity along a length direction of the base material, wherein a defect rate of the minute solid bodies is less than 1% of a total number of the minute solid bodies, and wherein the total number of the minute solid bodies is the number of the minute solid bodies when the minute solid bodies arranged in the arrangement pattern have no defects. ### Claim 27 (depends on 26) The transfer copy according to claim 26, wherein the transfer copy is used in printed electronics, and a field of application and a related field of printed electronics. ### Claim 28 (depends on 26) The transfer copy according to claim 26, wherein the transfer copy is used as a functional film or a functional device. ### Claim 29 (depends on 26) The transfer copy according to claim 26, wherein the transfer copy is used as a biosensor or a diagnostic device. ### Claim 30 (depends on 26) The transfer copy according to claim 26, wherein the transfer copy is used as an optical element. ### Claim 31 (depends on 26) The transfer copy according to claim 26, wherein the transfer copy is used in a battery-related or energy-related field. ### Claim 32 (depends on 26) The transfer copy according to claim 26, wherein the transfer copy is used in a vehicle-related field.