Abstract:
A glass for a substrate consisting essentially of: SiO2 45 to 65 wt %, Al2O3 6 to 20 wt %, B2O3 0.5 to 6 wt %, MgO 2 to 5 wt %, CaO 1 to 10 wt %, SrO 0 to 6.5 wt %, BaO 0 to 2 wt %, MgO + CaO + SrO + BaO 10 to 17 wt %, ZrO2 0 to 7 wt %, and Na2O + K2O 7 to 15 wt %.
Abstract:
To provide a method for producing a magnetic disk, whereby a magnetic recording layer is formed at a high temperature. A method for producing a magnetic disk, which comprises a step of forming a magnetic recording layer on a glass substrate having a temperature of at least 550° C., wherein the glass substrate comprises, as represented by mol percentage, from 62 to 74% of SiO2, from 6 to 18% of Al2O3, from 2 to 15% of B2O3 and from 8 to 21%, in total, of at least one component selected from MgO, CaO, SrO and BaO, provided that the total content of the above seven components is at least 95%, and further contains less than 1%, in total, of at least one component selected from Li2O, Na2O and K2O, or contains none of these three components.
Abstract translation:提供一种制造磁盘的方法,由此在高温下形成磁记录层。 一种制造磁盘的方法,包括在温度至少为550℃的玻璃基板上形成磁记录层的步骤,其中所述玻璃基板包含以摩尔百分比表示的62至74% 的SiO 2,6〜18%的Al 2 O 3,2〜15%的B 2 O 3和8〜21%的至少1种选自MgO,CaO,SrO和BaO的组分, 上述七种成分为至少95%,进一步含有少于1%的至少一种选自Li 2 O,Na 2 O和K 2 O的成分,或不含这三种成分。
Abstract:
To provide glass to be used for chemically tempered glass which is hardly broken even when flawed.Glass for chemical tempering, which comprises, as represented by mole percentage based on the following oxides, from 65 to 85% of SiO2, from 3 to 15% of Al2O3, from 5 to 15% of Na2O, from 0 and less than 2% of K2O, from 0 to 15% of MgO and from 0 to 1% of ZrO2, and has a total content SiO2+Al2O3 of SiO2 and Al2O3 of at most 88%.
Abstract translation:提供用于化学钢化玻璃的玻璃,即使有缺陷也难以破损。 用于化学回火的玻璃,其包含以下列氧化物的摩尔百分数表示,65%至85%的SiO 2,3至15%的Al 2 O 3,5至15%的Na 2 O,0和小于2% 的K 2 O,0〜15%的MgO和0〜1%的ZrO 2,SiO 2和Al 2 O 3的SiO 2 + Al 2 O 3的总含量为88%以下。
Abstract:
To provide a process to improve acid resistance of a glass substrate for an information recording medium.A process for producing a glass substrate for an information recording medium, comprising processing a glass formed into a plate by a float process, a down-draw method or a press method, wherein, in cooling of the glass in the last step where the glass has a temperature of at least its strain point, the time during which the glass temperature is at least its strain point and at most a temperature where the glass viscosity is 1010 dPa·s is at least 13 minutes.
Abstract:
To provide glass for a data storage medium substrate, whereby high heat resistance can be obtained. Glass for a data storage medium substrate, which comprises, as represented by mol percentage based on the following oxides, from 55 to 70% of SiO2, from 2.5 to 9% of Al2O3, from 0 to 10% of MgO, from 0 to 7% of CaO, from 0.5 to 10% of SrO, from 0 to 12.5% of BaO, from 0 to 2.5% of TiO2, from 0.5 to 3.7% of ZrO2, from 0 to 2.5% of Li2O, from 0 to 8% of Na2O, from 2 to 8% of K2O and from 0.5 to 5% of La2O3, provided that the total content of Al2O3 and ZrO2 (Al2O3+ZrO2) is at most 12%, and the total content of Li2O, Na2O and K2O (R2O) is at most 12%.
Abstract translation:为了提供用于数据存储介质基板的玻璃,由此可以获得高耐热性。 用于数据存储介质衬底的玻璃,其以由以下氧化物的摩尔百分数表示的SiO 2为55至70%,Al 2 O 3为2.5至9%,MgO为0至10%,0至7 CaO的0.5〜10%,BaO 0〜12.5%,TiO 2 0〜2.5%,ZrO 2 0.5〜3.7%,Li 2 O 2〜2.5%,Li 2 O 0〜8% Na 2 O,2〜8%的K 2 O和0.5〜5%的La 2 O 3,条件是Al 2 O 3和ZrO 2(Al 2 O 3 + ZrO 2)的总含量至多为12%,Li 2 O,Na 2 O和K 2 O(R 2 O)的总含量 )至多12%。
Abstract:
To provide a glass for an information recording medium substrate, which is excellent in weather resistance.A glass substrate for an information recording medium, which is made of an alkali aluminosilicate glass, wherein the difference obtained by subtracting the glass transition temperature Tg from the fictive temperature Tf, i.e. Tf−Tg, is at most 5° C. The glass substrate for an information recording medium, which comprises, as represented by mol % based on the following oxides, from 64 to 67% of SiO2, from 8 to 10% of Al2O3, from 10 to 13% of Li2O, from 9 to 12% of Na2O, from 0 to 2% of K2O and from 2 to 4% of ZrO2, provided that the total content of Li2O, Na2O and K2O, i.e. Li2O+Na2O+K2O, is from 21 to 25%.
Abstract translation:提供耐候性优异的信息记录介质基板用玻璃。 用于由铝硅酸铝玻璃制成的信息记录介质的玻璃基板,其中通过从假想温度Tf(即Tf-Tg)减去玻璃化转变温度Tg得到的差值为至多5℃。玻璃基板 对于信息记录介质,其包含以下列氧化物的摩尔%表示:SiO 2 64%〜67%,Al 2 O 3 8〜10%,Li 2 O 10〜13%,Li 2 O 9〜12% Na 2 O,0〜2%的K 2 O和2〜4%的ZrO 2,条件是Li 2 O,Na 2 O和K 2 O(即Li 2 O + Na 2 O + K 2 O)的总含量为21〜25%。
Abstract:
To provide a glass for an information recording media substrate, which is excellent in weather resistance.A glass for an information recording media substrate, which comprises, as represented by mol % based on oxide, from 61 to 66% of SiO2, from 11.5 to 17% of Al2O3, from 8 to 16% of Li2O, from 2 to 8% of Na2O, from 2.5 to 8% of K2O, from 0 to 6% of MgO, from 0 to 4% of TiO2 and from 0 to 3% of ZrO2, provided that Al2O3+MgO+TiO2 is at least 12%, and Li2O+Na2O+K2O is from 16 to 23%, wherein in a case of where B2O3 is contained, its content is less than 1%. The above glass for an information recording media substrate, wherein when the glass is left under steam atmosphere at 120° C. at 0.2 MPa for 20 hours, and the amount of Li, the amount of Na and the amount of K, which precipitate on a surface of the glass are represented as CLi, CNa and CK respectively, CNa is at most 0.7 nmol/cm2, and CLi+CNa+CK is at most 3.5 nmol/cm2.
Abstract translation:提供耐候性优异的信息记录介质基板用玻璃。 用于信息记录介质基板的玻璃,其以氧化物的摩尔%表示,SiO 2的61至66%,Al 2 O 3的11.5至17%,Li 2 O的8至16%,2至8重量% 的Na 2 O,2.5〜8%的K 2 O,0〜6%的MgO,0〜4%的TiO 2和0〜3%的ZrO 2,条件是Al 2 O 3 + MgO + TiO 2为至少12%,Li 2 O + Na 2 O + K 2 O为16〜23%,其中,在含有B 2 O 3的情况下,其含量小于1%。 上述用于信息记录介质基板的玻璃,其中当玻璃在蒸气气氛中在120℃下在0.2MPa下放置20小时时,并且Li的量,Na的量和沉淀的K的量 玻璃的表面分别表示为CLi,CNa和CK,CNa为0.7nmol / cm 2以下,CLi + CNa + CK为3.5nmol / cm 3以下。
Abstract:
To provide a substrate glass for data storage medium which is excellent in weather resistance even when no additional treatment such as chemical reinforcement treatment is applied and less susceptible to a whitening phenomenon and which has a glass transition temperature of at least 680° C. and is excellent in acid resistance.A substrate glass for data storage medium, which comprises, as represented by mass %, from 47 to 60% of SiO2, from 8 to 20% of Al2O3, from 0 to 8% of MgO, from 0 to 6% of CaO, from 1 to 18% of SrO, from 0 to 13% of BaO, from 1 to 6% of TiO2, from 1 to 5% of ZrO2, from 2 to 8% of Na2O and from 1 to 15% of K2O and which has a glass transition temperature of at least 680° C.
Abstract:
In a portable biological information monitor apparatus, a pulse wave detection signal obtained by light emission from a green LED and a body motion detection signal obtained by light emission from an infrared LED are detected as biological information. This biological information is analyzed to compute various barometers. In a wake normal mode of a set generation mode, body motion and pulse are calculated as wake evaluation barometers for evaluation of a test subject's status in wake. In a wake steady state motion mode, body motion, pulse, and pitch are calculated as motion evaluation barometers for evaluation of the test subject's status in steady state motion. In a sleep mode, body motion, pulse, and autonomic nervous function are calculated as sleep evaluation barometers for evaluation of the test subject's status in sleep. Necessary barometers are thereby generated regardless of the test subject's action using the portable monitor apparatus alone.
Abstract:
An optical measuring device includes a sensor which emits light flashes toward a subject of detection with a light emitting element which is supplied with electric power from a rechargeable battery for a certain duration at certain intervals and receives reflected light from the subject with a light sensitive element. A subtractor subtracts a d.c. component from a sensed signal provided by the light sensitive element, thereby extracting a variation component. The subtractor has its output signal amplified with an amplifier, with the output thereof being A/D-converted with an A/D converter.