会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 33. 发明授权
    • Ventilation arrangement for use in an optical recording disc
    • 用于光学记录盘的通风装置
    • US4720826A
    • 1988-01-19
    • US840863
    • 1986-03-18
    • Toshinori SugiyamaMitsuru Shimizu
    • Toshinori SugiyamaMitsuru Shimizu
    • G11B7/24G11B7/26
    • G11B7/24097G11B7/24015G11B7/26
    • An optical recording disc comprising two disc substrates, each in a cylindrical shape having a round center hole, at least one recording layer formed on the surface of at least one said disc substrate, and at least one bonding material layer is formed at an inner rim portion and an outer rim portion of the surface of the said disc substrate, on the surface of which the recording layer is formed, except for at least one portion of the said rim portion of the surface of the disc substrate, wherein the bonding material layer is provided to bond the said two disc substrates togehter, so that the surfaces of the said disc substrates, on the surface of which the recording layer is formed, face each other, thereby a space gap is formed between the said disc substrates, and the said one portion of the said rim portion of the surface of the disc substrate, where the bonding material layer is not formed, can act as a ventilation path, through which the air can pass from the said air gap into the outside of the optical recording disc, and reversely. Accordingly, the said ventilation path enables to prevent the shape of the disc substrate from changing and also enables to prevent the disc substrate from breaking, even if there is a pressure difference between the inside air gap and the outside of the optical recording disc, thereby the optical recording disc can record information correctly on the recording layer.
    • 一种光记录盘,包括两个圆盘形基板,每个圆盘形圆柱形具有圆形中心孔,至少一个记录层形成在至少一个所述盘基片的表面上,至少一个接合材料层形成在内边缘 部分和所述盘基片的表面的外边缘部分,除了所述盘基片表面的所述边缘部分的至少一部分之外,其表面上形成有记录层,其中所述接合材料层 被提供以将所述两个盘基片连接起来,使得所述盘基片的表面上形成记录层的表面彼此面对,由此在所述盘基片之间形成间隙,并且 所述盘基片表面的所述边缘部分的一部分,其中未形成所述接合材料层,其可以用作通气路径,空气可以通过所述通气路径从所述气隙传递到 在光学记录盘之外,并且反向。 因此,即使在内部空气间隙和光记录盘的外部之间存在压力差,所述通气路径也能够防止盘基板的形状发生变化,并且还能够防止盘基板破裂,由此 光记录盘可以在记录层上正确地记录信息。