摘要:
A glass substrate for use as the substrate of an information recording medium such as a magnetic disk, magneto-optical disk, DVD, or MD or of an optical communication device, and a glass composition for making such a glass substrate, contains the following glass ingredients: 45 to 75% by weight of SiO2; 1 to 20% by weight of Al2O3; 0 to 15% by weight, zero inclusive, of B2O3; SiO2+Al2O3+B2O3 accounting for 65 to 90% by weight; a total of 7 to 20% by weight of R2O compounds, where R=Li, Na, and K; and a total of 0 to 12% by weight, zero inclusive, of R′O compounds, where R′=Mg, Ca, Sr, Ba, and Zn. Moreover, the following conditions are fulfilled: B2O3=0% by weight, or Al2O3/B2O3≧1.0; and (SiO2+Al2O3+B2O3)/(the total of R2O compounds+the total of R2O compounds)≧3.
摘要翻译:用作诸如磁盘,磁光盘,DVD或MD或光通信装置的信息记录介质的基板的玻璃基板和用于制造这种玻璃基板的玻璃组合物包含以下玻璃 成分:45〜75重量%的SiO 2; 1至20重量%的Al 2 O 3 3; 0至15重量%,包括0的B 2 O 3 3; SiO 2 + 2→2→3→3→3→3→3 SUB>占65 至90重量% 总共7至20重量%的R 2 O 2化合物,其中R = Li,Na和K; 和0〜12重量%,包括0的R'O化合物,其中R'= Mg,Ca,Sr,Ba和Zn。 此外,满足以下条件:B 2 O 3 3 = 0重量%,或Al 2 O 3 3 SUB > / B sub> 3 SUB> = 1.0; 和(SiO 2/2 + Al 2 O 3 + B 2 O 3 3) /(R 2 O 2化合物的总和+ R 2 O O化合物的总和)= 3。
摘要:
A glass substrate for use as the substrate of an information recording medium such as a magnetic disk, magneto-optical disk, DVD, or MD or of an optical communication device, and a glass composition for making such a glass substrate, contains the following glass ingredients: 45 to 75% by weight of SiO2; 1 to 20% by weight of Al2O3; 0 to 8% by weight, zero inclusive, of B2O3; SiO2+Al2O3+B2O3 accounting for 60 to 90% by weight; a total of 0 to 20% by weight, zero inclusive, of R2O compounds, where R=Li, Na, and K; and a total of 0 to 15% by weight, zero inclusive, of TiO2+ZrO2+LnxOy, where LnxOy represents at least one compound selected from the group consisting of lanthanoid metal oxides, Y2O3, Nb2O5, and Ta2O5.
摘要翻译:用作诸如磁盘,磁光盘,DVD或MD或光通信装置的信息记录介质的基板的玻璃基板和用于制造这种玻璃基板的玻璃组合物包含以下玻璃 成分:45〜75重量%的SiO 2; 1至20重量%的Al 2 O 3 3; 0至8重量%,包括0的B 2 O 3 O 3; SiO 2 + 2 2 O 3 + B 2 O 3 3 SUB>占60 至90重量% 总共0至20重量%,包括0的R 2 O 2化合物,其中R = Li,Na和K; 并且总共0至15重量%,包括0的TiO 2 + ZrO 2 + Ln x O O y, 其中Ln x O O y表示至少一种选自镧系元素金属氧化物,Y 2 O 2 O 3的化合物 > 3,Nb 2 O 5,和Ta 2 O 5。
摘要:
The optical glass of the invention comprising: SiO2: 10 to 30%, B2O3: 15 to 35%, Li2O: 0 (inclusive) to 10%, Na2O: 0 (inclusive) to 5%, and K2O: 0 (inclusive) to 5% provided that Li2O+Na2O+K2O: 0 to 15%; MgO: 0 (inclusive) to 25%, CaO: 0 (inclusive) to 25%, BaO: 0 (inclusive) to 25%, SrO: 0 (inclusive) to 25%, and ZnO: 18 to 55% provided that MgO+CaO+BaO+SrO+ZnO: 18 to 55%; and La2O3: 5 to 20%. This optical glass does not substantially contain poisonous materials such as lead and arsenic. This optical glass has given optical constants, has a low Tg, a low TL and a good devitrification resistance, and is suitable for press molding.
摘要翻译:本发明的光学玻璃包括:SiO 2:10〜30%,B 2 O 3:15〜35%,Li 2 O(0)以上0〜10%,Na 2 O:0(含)〜5%,K 2 O:0(含0〜 )至5%,条件是Li 2 O + Na 2 O + K 2 O:0至15%; MgO:0(含)至25%,CaO:0(含)至25%,BaO:0(含)至25%,SrO:0(含)至25%,ZnO:18至55% + CaO + BaO + SrO + ZnO:18〜55% 和La 2 O 3:5〜20%。 该光学玻璃基本上不含铅,砷等有毒物质。 该光学玻璃具有光学常数,具有低Tg,低TL和良好的耐失透性,并且适用于压制成型。
摘要:
A polished glass disk medium substrate suitable for use as a substrate for a hard disk, a hard disk containing the substrate and methods for making the substrate. The substrate containing glass forming raw materials may be formed so as to have a Young's modulus of 110 or higher.
摘要:
A polished glass disk medium substrate suitable for use as a substrate for a hard disk, a hard disk containing the substrate and methods for making the substrate. The substrate containing glass forming raw materials may be formed so as to have a Young's modulus of 110 or higher.
摘要:
A polished glass disk medium substrate suitable for use as a substrate for a hard disk, a hard disk containing the substrate and methods for making the substrate. The substrate containing glass forming raw materials may be formed so as to have a Young's modulus of 110 or higher.
摘要:
A glass ceramics composition for recording disk substrate contains, essentially, expressed in terms of weight percent on the oxide basis; from 50.5 to 52.5 wt % of SiO2, from 10 to 30 wt % of Al2O3, from 10 to 30 wt % of MgO, and from 4 to 10.6 wt % of TiO2.
摘要翻译:用于记录盘基片的玻璃陶瓷组合物基本上以氧化物的重量百分数表示; SiO 2为50.5〜52.5重量%,Al 2 O 3为10〜30重量%,MgO为10〜30重量%,TiO 2为4〜10.6重量%。
摘要:
The electrical equipment of the present invention is operated such that the ON operating member for the primary power supply supplying circuit is manually operated, the switch device S is turned ON and when a supplying of electrical power for the primary power supply supplying circuit is shut off, the circuit for the control system is operated and upon performing a predetermined security processing, the driving source is driven, the OFF operating member is automatically operated, the switch device S is automatically turned OFF and supplying of an electrical power to the primary power supply supplying circuit is automatically shut off, so that it is possible to perform an appropriate processing before shutting off the primary power supply supplying circuit and thus it is also possible to provide electrical equipment showing a high safety characteristic.
摘要:
A push-button switch including a sliding member, a lock pin for locking the sliding member at a certain location, a heart cam including a lock cam along which the lock pin slides, and a movable stopper member, disposed at the heart cam, for holding the lock pin in a lock position as a result of cooperating with the lock cam or for unlocking the lock pin. The push-button switch incorporates a self-restoring function, wherein friction between the lock pin and the lock cam during an auto-off state is reduced to decrease the amount of force required to unlock the lock pin, thereby reducing the solenoid actuating current, and simplifying the actuating structure, as a result of which a more reliable product with a longer life and a smaller size can be produced.
摘要:
A straight-tube LED lamp switch device includes a first terminal protruding from a housing; an operating body having an operating portion that can receive a pressing operation into the housing; a second terminal that is brought into conduction with the first terminal by the pressing operation; and a torsion spring that restores the operating body to an initial state before the pressing operation. The housing has therein a housing portion that houses the operating body when the pressing operation is performed. The operating body is tilted by a pressing operation from at least one side of opposite directions with respect to a protruding direction of the first terminal. By the tilting, at least part of the operating portion is housed in the housing portion and the first terminal is brought into conduction with the second terminal.