摘要:
A plastic lens includes a lens body having effective optical diameter and is mounted in a lens mount by a hold ring which is threaded in the mount. Thin portion is formed outside the lens body and is thinner than minimum thickness of the lens body; end portion is formed outside from and thicker than the thin portion and is adapted to secure the lens with the lens mount and the hold ring. The thin portion absorbs heat stress caused by linear elongation coefficient difference between plastic lens and aluminum lens mount.
摘要:
A printing head for a wire dot printer having printing wires each of which is attached to an armature, wire driving mechanisms for reciprocating the printing wires in a first direction, each having the armature moved in the first direction, a magnetic frame including an air gap in which the armature is received swingably in the first direction, a magnetizing coil for generating a magnetic flux in the air gap, a sliding portion formed in the magnetic frame for adjusting the length of the air gap, and an armature support member attached to the magnetic frame to resiliently support the armature, the armature support member being slidable not only in the first direction but also in a second direction which is perpendicular to the first direction so that the free position of the armature may be adjustable independently of the adjustment of the length of the air gap.
摘要:
An optical information storage material having a substrate and a film deposited on the substrate, the state of said material can be changed from a low optical density state to a high optical density state by the application of electrical, optical or thermal energy. The major component of the film is GeO.sub.x1, SnO.sub.x1, SbO.sub.x2, TlO.sub.x2, BiO.sub.x2 or MoO.sub.x3 wherein 0
摘要:
An optical information recording medium (100) of the present invention includes an information layer (011) that allows information to be recorded thereon and reproduced therefrom by irradiation with a laser beam (040). The information layer (011) includes a reflective layer (002), a first dielectric layer (003), a recording layer (005) capable of undergoing a phase change by the irradiation with the laser beam (040) and a second dielectric layer (007) formed in this order from a side opposite to a laser beam incident side. The recording layer (005) contains Ge, Sb and Te. When Ge, Sb and Te contained in the recording layer (005) are represented by GexSbyTez in atomic number ratio, x, y, and z satisfy 0.39≦x≦0.48, 0.02≦y
摘要翻译:本发明的光学信息记录介质(100)包括信息层(011),其允许在其上记录信息并通过激光束照射从其再现。 信息层(011)包括反射层(002),第一电介质层(003),能够通过用激光束(040)照射而经历相变的记录层(005)和第二电介质层 007)从与激光束入射侧相反的一侧依次形成。 记录层(005)含有Ge,Sb和Te。 当记录层(005)中包含的Ge,Sb和Te以原子序数比的GexSbyTez表示时,x,y和z满足0.39 @ x @ 0.48,0.02@y <0.11,0.40×z <0.56,x + y + z = 1。 记录层(005)的厚度为10nm以上且15nm以下。 在来自信息层(011)的激光束(040)的反射光量与入射到信息层(011)上的激光束(040)的量的比率被表示为R(% ),记录层(005)处于结晶状态时的R表示为Rc(%),记录层(005)处于非晶态时的R表示为Ra(%),Rc和Ra 满足6.0 @ Rc / Ra @ 12.0和1.0 @ Rc @ 3.0。
摘要:
An information recording medium (9) of the present invention is an information recording medium with respect to which information can be recorded or reproduced by irradiation with an optical beam (1). The information recording medium (9) includes a second interface layer (103), a recording layer (104) and a first interface layer (105) in this order from the optical beam (1) incident side. The first interface layer (105) and the second interface layer (103) are disposed in contact with the recording layer (104). The second interface layer (103) contains M1 (where M1 is at least one element selected from Nb, Y, Dy, Ti, Si and Al), Cr and oxygen (O). The first interface layer (105) contains M2 (where M2 is at least one element selected from Nb, Y, Dy, Ti, Si, Al, Zr and Hf), Cr and oxygen (O). The first interface layer (105) and the second interface layer (103) each contain Cr in a range of 50 mol % or less in terms of the oxide (Cr2O3).
摘要翻译:本发明的信息记录介质(9)是信息记录介质,通过用光束(1)的照射可以记录或再现信息。 信息记录介质(9)从光束(1)入射侧依次包括第二接口层(103),记录层(104)和第一界面层(105)。 第一界面层(105)和第二界面层(103)设置成与记录层(104)接触。 第二界面层(103)含有M1(其中M1为选自Nb,Y,Dy,Ti,Si和Al中的至少一种元素),Cr和氧(O)。 第一界面层(105)含有M2(其中,M2为选自Nb,Y,Dy,Ti,Si,Al,Zr和Hf中的至少一种元素),Cr和氧(O)。 第一界面层(105)和第二界面层(103)各自含有以氧化物(Cr 2 O 3)换算为50摩尔%以下的Cr。
摘要:
An optical information recording medium including three or more information layers, wherein at least one information layer provided on the light incident side is an information layer which enables information to be overwritten and includes a recording film, a transmittance adjusting film of a dielectric containing Bi, Ti and O, and an isolation film in this order from a light incident side; and the isolation film is provided between and adjacent to the transmittance adjusting film and an intermediate separation layer which separate the information layer from another information layer on the side opposite to the light incident side; and the isolation film has an optical constant at a wavelength of 405 nm such that a refractive index is 1.8 or less and an extinction coefficient is 0.05 or less. This information recording medium prevents the repeated overwriting characteristics in a sever environment from being deteriorated.
摘要:
The information recording medium (1) of the present invention includes a recording film (114, 124). The information recording medium (1) allows information to be recorded and reproduced on and from the information recording medium by irradiation of the recording film (114, 124) with a laser beam (18). The information recording medium (1) of the present invention further includes a mixed dielectric film (the second dielectric film 116, 126) disposed on the laser beam (18) incident side with respect to the recording film (114, 124). The mixed dielectric film contains a mixed dielectric material consisting of Zn sulfide, Si oxide and an oxide X (where the oxide X is an oxide of at least one element selected from Ti, Nb, Ta and Ce).
摘要:
An optical information recording medium (9) of the present invention is an optical information recording medium including: N information layers, where N is a natural number of 2 or more; and an intermediate layer for separating the N information layers optically from each other. With the N information layers being referred to as a first information layer (10) to an N-th information layer (7) sequentially from an optical beam incident side, a first information layer (10) corresponding to an L-th information layer included in the N information layers includes a recording layer (104) on which information can be recorded by irradiation with an optical beam, a reflective layer (108), and a transmittance adjusting layer (109) in this order from the optical beam incident side, where L is an at least one natural number that satisfies 1≦L≦N−1. The transmittance adjusting layer (109) contains tungsten (W) and oxygen (O).
摘要:
An information recording medium ensuring high recording and erase function and excellent archival characteristic at a high linear velocity and over a wide range of linear velocities is provided. Such a medium is obtained by constructing a recording layer which has a composition that can generate phase change as a whole, of a first through an M-th constituent layers (wherein M is an integer of 2 or greater) which are stacked in a thickness direction, such that elemental compositions of contiguous an m-th constituent layer and a (m+1)th constituent layer are different from each other (wherein m is an integer and satisfies 1≦m≦M) assuming that the constituent layer located at an m-th position from a laser light incident side is the m-th constituent layer. In this information recording medium, at least one m-th constituent layer constituting the recording layer preferably includes at least one element selected from Te, Bi, Sb, Ge, In, Ga, Al, Sn, Pb, Se and Si.
摘要:
According to the present invention, a recording film is partially initialized using a first light beam (A) having a wavelength for initialization, focus adjustment is performed using a second light beam (B) having a wavelength corresponding to a wavelength for recording and reproducing information on and from an information recording medium, and then the recording film is initialized using the first light beam (A), thereby it is possible to securely initialize recording films of all information layers of a multilayer information recording medium.