摘要:
The present invention relates to a method of manufacturing a formed article forming an upper surface of a forming material comprised of a thermosoftening substance into a desired shape by positioning the forming material on a forming surface of a mold and heating the forming material to a temperature permitting deformation to bring a lower surface of the forming material into tight contact with the forming surface. As the mold, a mold having, on a forming surface thereof, a plurality of irregularities with a maximum height Rmax ranging from 0.1 to 100 micrometers and an average spacing S between local peaks ranging from 0.01 to 1.00 mm is employed. The present invention further relates to a mold and method of manufacturing the same. According to the present invention, a formed article with a desired shape can be manufactured with high precision and high productivity by hot sag forming method without the occurrence of the fusion between the forming material and the mold.
摘要:
The present invention relates to a method of manufacturing a formed article forming an upper surface of a forming material comprised of a thermosoftening substance into a desired shape by positioning the forming material on a forming surface of a mold and heating the forming material to a temperature permitting deformation to bring a lower surface of the forming material into tight contact with the forming surface. The forming is conducted while an exposed portion on the forming surface side of the mold upon which the forming material has been positioned is covered with a covering member. The present invention further relates to a covering member and a forming apparatus. According to the present invention, formed articles with a desired shape can be formed with high accuracy by preventing the contamination of upper surface of forming materials by foreign matter during forming.
摘要:
The present invention relates to a method of manufacturing a formed article comprising forming an upper surface of a glass material that has been positioned on a forming surface of a mold to obtain the formed article by heating the glass material to a temperature permitting deformation to bring a lower surface of the glass material into tight contact with the forming surface. Glass having upper and lower surfaces being spherical in shape is employed as the glass material, a mold having a forming surface being a free-form surface other than a spherical surface is employed as the mold, the upper surface of the glass material is formed into a roughly offset surface relative to the forming surface of the mold. The present invention permits the manufacturing of formed articles of desired shape with high precision by hot sag molding method. The present invention also permits the easy and simple determination of the surface shapes of molds and glass materials employed in hot sag molding method.
摘要:
The present invention relates to a method of manufacturing a formed article comprising forming an upper surface of a glass material that has been positioned on a forming surface of a mold to obtain the formed article by heating the glass material to a temperature permitting deformation to bring a lower surface of the glass material into tight contact with the forming surface. Glass having upper and lower surfaces being spherical in shape is employed as the glass material, a mold having a forming surface being a free-form surface other than a spherical surface is employed as the mold, the upper surface of the glass material is formed into a roughly offset surface relative to the forming surface of the mold. The present invention permits the manufacturing of formed articles of desired shape with high precision by hot sag molding method. The present invention also permits the easy and simple determination of the surface shapes of molds and glass materials employed in hot sag molding method.
摘要:
The present invention relates to a method of manufacturing a formed article forming an upper surface of a forming material comprised of a thermosoftening substance into a desired shape by positioning the forming material on a forming surface of a mold and heating the forming material to a temperature permitting deformation to bring a lower surface of the forming material into tight contact with the forming surface. As the mold, a mold having, on a forming surface thereof, a plurality of irregularities with a maximum height Rmax ranging from 0.1 to 100 micrometers and an average spacing S between local peaks ranging from 0.01 to 1.00 mm is employed. The present invention further relates to a mold and method of manufacturing the same. According to the present invention, a formed article with a desired shape can be manufactured with high precision and high productivity by hot sag forming method without the occurrence of the fusion between the forming material and the mold.
摘要:
The present invention relates to a method of manufacturing a formed article comprising forming an upper surface of a forming material comprised of a thermosoftening substance into a desired shape by positioning the forming material on a forming surface of a mold and heating the forming material to a temperature permitting deformation to bring an entire surface of a lower surface of the forming material into tight contact with the forming surface. The positioning of the forming material is conducted by supporting the forming material with a support member so that at least a portion of a lower surface rim portion of the forming material is in tight contact with the forming surface and a center portion of the lower surface of the forming material is separated from the forming surface, and the support with the support member is conducted so that a lower portion of a lateral surface of the forming material is separated from the support member and at least a portion of an upper edge portion of the lateral surface of the forming material is supported by the support member. According to the present invention, a formed article with a desired shape can be manufactured with high precision by hot sag forming method.
摘要:
The present invention relates to a method of manufacturing a formed article comprising forming an upper surface of a forming material comprised of a thermosoftening substance into a desired shape by positioning the forming material on a forming surface of a mold and heating the forming material to a temperature permitting deformation to bring an entire surface of a lower surface of the forming material into tight contact with the forming surface. The positioning of the forming material is conducted by supporting the forming material with a support member so that at least a portion of a lower surface rim portion of the forming material is in tight contact with the forming surface and a center portion of the lower surface of the forming material is separated from the forming surface, and the support with the support member is conducted so that a lower portion of a lateral surface of the forming material is separated from the support member and at least a portion of an upper edge portion of the lateral surface of the forming material is supported by the support member. According to the present invention, a formed article with a desired shape can be manufactured with high precision by hot sag forming method.
摘要:
The present invention relates to a method of manufacturing a formed article forming an upper surface of a forming material comprised of a thermosoftening substance into a desired shape by positioning the forming material on a forming surface of a mold and heating the forming material to a temperature permitting deformation to bring a lower surface of the forming material into tight contact with the forming surface. The forming is conducted while an exposed portion on the forming surface side of the mold upon which the forming material has been positioned is covered with a covering member. The present invention further relates to a covering member and a forming apparatus. According to the present invention, formed articles with a desired shape can be formed with high accuracy by preventing the contamination of upper surface of forming materials by foreign matter during forming.
摘要:
A solid state memory device has a thin film for bubble memory, a laser light source, and optical means using a laser light emitted from the laser light source to cause information to be stored in the form of bubbles on the thin film for bubble memory and reproduce the stored information.
摘要:
A recording medium is provided which comprises (a) a first recording layer; (b) a second recording layer provided in contiguity to the first recording layer; and (c) a separation layer for spatially separating the first and second recording layer. The first recording layer has a sufficient film thickness not to permit the recording to be effected on the second recording layer, while the recording operation is performed on the first recording layer, and the recording operation is effected on the second recording layer at positions corresponding to defective portions in the first recording layer.