摘要:
An apparatus and method for testing mechanical endurance of a surface of an optical disc (30) are disclosed. The apparatus includes a rotating plate (20) on which an optical disc (30) to be scratched is loaded, for rotating the loaded optical disc (30), and a plurality of abrasion wheels (10), disposed at a perpendicular to the rotating plate (20), for contacting the optical disc (30) and generating the scratch, the scratch being generated when the optical disc (30) rotates under 5 turns for the abrasion wheels (10) apply a predetermined load on the optical disc (30).
摘要:
A process for fabrication of a magneto-optic recording medium is disclosed. The process is constituted such that Co and Pd or Co and Pt are arranged in plural numbers upon a target, isolating plates are installed between the mentioned element regions, and a base plate is moved over the target horizontally relative to the target. When moving the base plate, a voltage is supplied to the target, so that the Co and Pd or Co and Pt should alternately adhere on the base plate in a continuous manner.
摘要:
An apparatus and method for testing mechanical endurance of a surface of an optical disc (30) are disclosed. The apparatus includes a rotating plate (20) on which an optical disc (30) to be scratched is loaded, for rotating the loaded optical disc (30), and a plurality of abrasion wheels (10), disposed at a perpendicular to the rotating plate (20), for contacting the optical disc (30) and generating the scratch, the scratch being generated when the optical disc (30) rotates under 5 turns for the abrasion wheels (10) apply a predetermined load on the optical disc (30).
摘要:
An apparatus for testing mechanical endurance of a surface of an optical disc (30), comprising: a rotating plate (20), on which an optical disc (30) to be scratched is loaded, for rotating the loaded optical disc (30); and a plurality of abrasion wheels (10), disposed on the rotating plate (20), for contacting the optical disc (30) and generating the scratch, the scratch being generated when the optical disc (30) rotates 5 turns during which the abrasion wheels (10) apply a predetermined load on the optical disc (30).
摘要:
A system for measuring the thickness of one or more layers (32) of an optical disc that includes a spacer layer (32b) and a cover layer (32a) by using an interference effect of an optical disc layer is disclosed. The apparatus comprises a spectroscope (42) to separate light, reflected from a surface of an optical disc, into constituent frequencies, an optical intensity measuring unit (44) to measure intensities of the constituent frequencies, respectively, as a first spectrum of data, and a processor (46). The processor (46) is adapted to do at least the following: convert the first spectrum data into a second spectrum of values that exhibits variation as a function of wavelength and refractive index, transform the second spectrum using a Fast Fourier Transform, and detect a thickness of one or more of the spacer layer (32b) and the cover layer (32a), respectively, based upon the transformed spectrum. Moreover, a corresponding device and machine-readable medium are disclosed.
摘要:
An apparatus and method for testing mechanical endurance of a surface of an optical disc (30) is disclosed, which includes a rotating plate (20) on which the optical disc (30) is fixed to generate scratch thereon, and rotating the fixed optical disc (30); and a plurality of abrasion wheels (10) disposed in perpendicular to the rotating plate (20), and being in contact with the surface of the optical disc (30), to generate the scratch on the surface of the optical disc (30), wherein, the scratches generate when the optical disc (30) rotates a predetermined turn, e.g. below ten turns for applying a predetermined load generated from the abrasion wheel (10) on the optical disc (30).
摘要:
An apparatus for testing mechanical endurance of a surface of an optical disc (30), comprising: a rotating plate (20), on which an optical disc (30) to be scratched is loaded, for rotating the loaded optical disc (30); and a plurality of abrasion wheels (10), disposed on the rotating plate (20), for contacting the optical disc (30) and generating the scratch, the scratch being generated when the optical disc (30) rotates 5 turns during which the abrasion wheels (10) apply a predetermined load on the optical disc (30).
摘要:
An apparatus and for testing mechanical endurance of a surface of an optical disc (30) is disclosed. The apparatus includes a rotating plate (20), on which an optical disc (30) to be scratched is loaded, for rotating the loaded optical disc (30); and a plurality of abrasion wheels (10), for contacting the optical disc (30) and generating the scratch. The scratch is generated, when the optical disc (30) rotates a predetermined number of turns with the abrasion wheels (10) applying a predetermined load on the rotated optical disc (30). The apparatus enables a determination on whether the optical disc (30) has a predetermined endurance based on comparing a result from the scratch generated on the surface of the optical disc (30) with a predetermined reference value.
摘要:
An apparatus and method for testing mechanical endurance of a surface of an optical disc (30) is disclosed, which includes a rotating plate (20) on which the optical disc (30) is fixed to generate scratch thereon, and rotating the fixed optical disc (30); and a plurality of abrasion wheels (10) disposed in perpendicular to the rotating plate (20), and being in contact with the surface of the optical disc (30), to generate the scratch on the surface of the optical disc (30), wherein, the scratches generate when the optical disc (30) rotates a predetermined turn, e.g. below ten turns for applying a predetermined load generated from the abrasion wheel (10) on the optical disc (30).
摘要:
An apparatus and for testing mechanical endurance of a surface of an optical disc (30) is disclosed. The apparatus includes a rotating plate (20), on which an optical disc (30) to be scratched is loaded, for rotating the loaded optical disc (30); and a plurality of abrasion wheels (10), for contacting the optical disc (30) and generating the scratch. The scratch is generated, when the optical disc (30) rotates a predetermined number of turns with the abrasion wheels (10) applying a predetermined load on the rotated optical disc (30). The apparatus enables a determination on whether the optical disc (30) has a predetermined endurance based on comparing a result from the scratch generated on the surface of the optical disc (30) with a predetermined reference value.