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    • 3. 发明申请
    • OPTICAL MARK READER FOR LATENT IMAGE MARK
    • 光学标记读取器用于图像标记
    • WO1994027242A1
    • 1994-11-24
    • PCT/JP1994000778
    • 1994-05-13
    • HITACHI MAXELL, LTD.NISHIDA, MasatoISHITUKA, TomoakiOSHIMA, Toshio
    • HITACHI MAXELL, LTD.
    • G06K07/00
    • G06K7/10594G06K7/12Y10S283/901
    • A high-reliability optical mark reader for a latent image mark capable of accurately reading code information of a latent image mark. The reader comprises a projector element (4) for projecting onto the surface of the latent image mark (15), which contains a fluorescent substance and has specified information, light having a wavelength for excitation of the fluorescent substance, and a light receiving element (8) for receiving fluorescence emitted from the surface of the latent image mark (15). A range where a latent image mark is readable is defined with an intersection of optical axes of the projector element and the light receiving element as a reference, and a crossing angle ( theta ) of the two optical axes is restricted to 40 DEG or less.
    • 一种用于能够精确地读取潜像标记的代码信息的潜像标记的高可靠性光标读取器。 读取器包括投影仪元件(4),用于投影到潜象标记(15)的表面上,该潜像标记(15)包含荧光物质并具有指定信息,具有用于激发荧光物质的波长的光和光接收元件 8)用于接收从潜像标记(15)的表面发射的荧光。 通过投影元件和受光元件的光轴的交点作为基准来定义潜像标记可读的范围,并且两个光轴的交叉角(θ)限制在40°以下。
    • 7. 发明申请
    • SUBSTRATE, RECORDING MEDIUM INCLUDING THE SUBSTRATE, CARTRIDGE AND REPRODUCTION APPARATUS
    • 基板,记录介质,包括基板,盒和再现装置
    • WO1997005607A1
    • 1997-02-13
    • PCT/JP1996002157
    • 1996-07-31
    • HITACHI MAXELL, LTD.OHNUKI, SatoruOHTA, NorioSHIMAZAKI, KatsusukeYOSHIHIRO, MasafumiSUGIYAMA, ToshinoriOHNUKI, Takeshi
    • HITACHI MAXELL, LTD.
    • G11B07/24
    • G11B23/0316G11B11/1058G11B11/10584G11B23/0307
    • An optical head (67) and a magnetic head (65) for magnetooptical disk recording/reproduction are placed between sliders (66a to 66d) that serve to form narrow air gaps (68) between the heads and a disk. When air flows in directions tangential to tracks because of the rotation of a disk (61), the pressure in the air gaps increases, and the disk surface can be kept at a predetermined position so that the pressure in the vertical direction of the disk (61) becomes uniform. This construction is effective for a thin disk having a substrate thickness of not greater than 0.85 mm. A disk cartridge (101) effective for a thin disk includes a roller member (111) which engages with the disk periphery. Radial protuberances (157a and 157b) are formed on the inner surface of the cartridge so as to regulate the air flow between the cartridge and the disk surface. The disk substrate (10) accomodated in the cartridge is thicker in the periphery (12) than the recording region (14) to increase rigidity.
    • 用于磁光盘记录/再现的光学头(67)和磁头(65)被放置在用于在磁头和磁盘之间形成窄气隙(68)的滑块(66a至66d)之间。 当空气由于盘(61)的旋转而沿着与轨迹相切的方向流动时,气隙中的压力增加,并且盘表面可以保持在预定位置,使得盘的垂直方向上的压力 61)变得均匀。 该结构对于基板厚度不大于0.85mm的薄盘是有效的。 对于薄盘有效的盘盒(101)包括与盘周边啮合的辊构件(111)。 径向突起(157a和157b)形成在盒的内表面上,以便调节盒与盘表面之间的气流。 容纳在盒中的盘基板(10)在周边(12)中比记录区域(14)更厚,以增加刚性。