Composite optical disk with structure for preventing adhesive from
leaking into the center hole
    4.
    发明授权
    Composite optical disk with structure for preventing adhesive from leaking into the center hole 失效
    具有用于防止粘合剂泄漏到中心孔中的结构的复合光盘

    公开(公告)号:US5956317A

    公开(公告)日:1999-09-21

    申请号:US686836

    申请日:1996-07-26

    IPC分类号: B29D17/00 G11B7/24 G11B7/26

    摘要: A composite optical disk structure includes a first transparent disk plate having a first center hole, a first stamper clamp groove and a first information recording area on its one main surface; a second transparent disk plate having a second center hole having a diameter equal to that of the first center hole, a second stamper clamp groove and a second information recording area on its one main surface; a transparent adhesive sandwiched between the first and second transparent disk plates to bond the one main surfaces of them; and a mechanism formed between the one main surfaces for preventing the transparent adhesive from leaking our into the center holes.

    摘要翻译: 复合光盘结构包括在其一个主表面上具有第一中心孔的第一透明盘片,第一压模钳槽和第一信息记录区域; 具有与第一中心孔的直径相等的第二中心孔的第二透明盘片,在其一个主表面上具有第二压模夹持槽和第二信息记录区域; 夹在第一和第二透明盘板之间以将其一个主表面粘合的透明粘合剂; 以及在一个主表面之间形成的用于防止透明粘合剂泄漏到中心孔中的机构。

    Printed circuit assembly
    9.
    发明授权
    Printed circuit assembly 失效
    印刷电路组件

    公开(公告)号:US5034855A

    公开(公告)日:1991-07-23

    申请号:US542105

    申请日:1990-06-22

    申请人: Takeshi Komiyama

    发明人: Takeshi Komiyama

    IPC分类号: H05K1/02 H05K1/18

    摘要: On a printed circuit board, according to the present invention, IC packages are arranged in a matrix layout. The IC packages are soldered to the printed circuit board via their lead wires provided on the package sides along row and column lines of the matrix chip components are soldered to the printed circuit board, under each of the IC packages along lines angularly deviated from the row lines or the column lines of the matrix. Thus, the soldered portion of a chip component behind its adjacent chip component can be visually inspected along a view line parallel to the row line or the column line on a highly integrated printed circuit board.