摘要:
The present invention provides: a filament for three-dimensional printer molding which includes a resin that can be molded by a three-dimensional printer in a wide temperature range without excessively elevating the extrusion temperature for the three-dimensional printer and from which a crystalline soft resin molded article excellent in terms of flexible texture, shape reproducibility, shape retentivity, heat resistance, etc. can be produced; and a method for producing a crystalline soft resin molded article. The present invention relates to a filament for three-dimensional printer molding which includes a polyester-based thermoplastic elastomer wherein a durometer D hardness (JIS K6253-1993) is 40 or less and thermal properties measured with a differential scanning calorimeter (DSC) satisfy the following conditions: a melting peak temperature (A) is 120 to 220°C by heating at 10 °C/min; a crystallization peak temperature (B) is 60 to 160°C by cooling at 10 °C/min; and the crystallization peak observed during cooling at 10 °C/min has a half-value temperature width of 10 to 30°C.
摘要:
By use of a substrate which can be stably formed and has a relatively small groove depth, a very high density optical recording medium having good recording/reading characteristics is provided. In an optical recording medium 20 of a surface incidence type, in which a reflective layer 23, a recording layer 22 containing a dye as a main component and a cover layer 24 are sequentially formed on a substrate 21 having guide grooves formed therein, a guide groove part on a far side from a plane of incidence of a recording/reading light beam 27 on the cover layer 24 is set as a recording groove part, and reflected light intensity in a recorded pit portion formed in the recording groove part is increased by a phase shift and is set higher than reflected light intensity in unrecorded.
摘要:
To provide an optical recording medium exhibiting favorable write/read characteristics in high-speed recording. In an optical recording medium including a reflective layer, a dye-containing recording layer, and a transparent resin layer on a substrate in this order, a barrier layer is disposed between the recording layer and the resin layer, where the barrier layer comprises a material having a bulk thermal conductivity M of 70 W/m·K or more at 300 K and has a thickness t less than 5 nm.
摘要:
A one-side incident type optical recording medium having a plurality of recording layers capable of instantaneously switching recording/reproduction conditions (such as the tracking polarity, the recording pulse strategy, and the advisable recording power) according to each recording layer and accurately and surely executing information recording or reproduction on the recording/reproduction condition according to each recording layer. In each of the plurality of recording layers of the optical recording medium, information can be recorded or reproduced by radiation of a laser beam from one side. A control section reads out layer information from one of the recording layers, each having layer information recorded (layer information read out step) and controls so that recording or reproduction is performed on the recording/reproduction condition in accordance with the recording layer specified by the layer information (recording control step).
摘要:
Provided is an extremely high-density optical recording medium with excellent jitter characteristics and good recording/reproducing characteristics. An optical recording medium 20 comprises a substrate 21 with a guide groove formed therein, a layer 23 with a light reflection function, a recording layer 22 comprising a dye as a main component with a light absorption function for a wavelength of recording/reproducing light in an unrecorded state, and a cover layer 24 capable of transmitting the recording/reproducing light incident to the recording layer 22, in the order mentioned; an interlayer 30 containing at least one element selected from the group consisting of Ta, Nb, V, W, Mo, Cr and Ti, is provided between the layer 23 with the light reflection function and the recording layer 22.