Tape speed and tension control system for a magnetic tape cassette
apparatus
    1.
    发明授权
    Tape speed and tension control system for a magnetic tape cassette apparatus 失效
    磁带机速度和张力控制系统

    公开(公告)号:US4696439A

    公开(公告)日:1987-09-29

    申请号:US850757

    申请日:1986-04-11

    CPC分类号: G11B15/54 G11B15/43

    摘要: A digital tape cassette apparatus having a speed sensing roller in frictional contact with the magnetic tape within a cassette housing at a point intermediate the magnetic head and that one of the cassette hubs operating as the takeup hub during forward tape transportation. Utilizing a tape speed signal generated by a speed sensor driven by the speed sensing roller, a closed loop servomechanism controls a pair of drive motors coupled directly to the respective cassette hubs to afford constant tape speed. The servomechanism is associated with a tape tension control circuit whereby a supply side one of the drive motors during tape travel in either direction is energized to an extent increasing with the increase in the diameter of the tape reel on the takeup side hub, thereby affording constant tape tension. A reverse tape tension drop circuit is connected to the tape tension control circuit for making the tape tension less during reverse tape travel than during forward tape travel under the condition of the same tape reel diameter on the takeup side cassette hub, so that the tape tension at the magnetic tape is rendered approximately the same during forward and reverse tape travels despite the dynamically asymmetrical tape path due to the speed sensing roller in frictional engagement with the tape.

    摘要翻译: 一种数字带盒装置,其具有速度检测辊,该速度检测辊与位于磁头之间的一个点处的盒壳体内的磁带摩擦接触,以及在转发磁带传送期间作为卷绕轮毂操作的盒式磁带轮毂之一。 利用由速度感测辊驱动的速度传感器产生的磁带速度信号,闭环伺服机构控制一对直接耦合到各个磁带轮毂的驱动电机,以提供恒定的磁带速度。 伺服机构与带张力控制电路相关联,由此在磁带行进中的任一方向上的驱动电动机之一的供电侧被激励到随着卷绕侧轮毂上的磁带卷盘的直径的增加而增加的程度,从而提供恒定的 胶带张力。 带状张力控制回路连接到带张力控制电路,用于在卷带行驶期间使卷带张力小于在卷取侧盒式集线器上的相同卷盘直径的条件下的向前带行进期间的带张力,使得带张力 尽管由于速度感测辊与带摩擦接合而导致动态不对称的磁带路径,但是在磁带的正向和反向传送过程中,磁带的大致相同。

    Label printing apparatus
    3.
    发明授权
    Label printing apparatus 失效
    标签打印设备

    公开(公告)号:US07303344B2

    公开(公告)日:2007-12-04

    申请号:US10993934

    申请日:2004-11-19

    IPC分类号: B41J2/325

    摘要: A thermal transfer-type label printer and an optical disc apparatus are integrated to miniaturize a multi-function label printing apparatus. An information recording/reproducing unit that carries out recording or reproduction of information on a recording surface of an optical disc is incorporated within a disc tray unit of a label printing apparatus that presses a thermal transfer film ribbon, on which printing information has been formed, onto a label surface of an optical disc mounted on a disc mounting part of the disc tray unit, and transfers the printing information onto the label surface using a heat roller. The recording or reproduction of information on the recording surface of the optical disc and the transferring of the printing information on the label surface of the optical disc are carried out on the disc tray unit. When transferring the printing information, the clamping of the optical disc by a disc clamper is released and a turntable and the disc clamper are withdrawn to a non-clamping position.

    摘要翻译: 集成了热转印型标签打印机和光盘装置,以使多功能标签打印装置小型化。 在光盘的记录表面上执行信息的记录或再现的信息记录/再现单元被结合在标记打印设备的盘托盘单元中,该标签打印设备按压已经形成打印信息的热转印膜色带, 到安装在盘托架单元的盘安装部分上的光盘的标签表面上,并使用加热辊将打印信息转印到标签表面上。 在光盘托盘单元上执行在光盘的记录表面上的信息的记录或再现以及在光盘的标签表面上的打印信息的传送。 当传送打印信息时,通过盘夹持器夹紧光盘被释放,转盘和盘夹持器被拉出到非夹紧位置。

    Label printing apparatus
    4.
    发明申请
    Label printing apparatus 失效
    标签打印设备

    公开(公告)号:US20050151825A1

    公开(公告)日:2005-07-14

    申请号:US10993934

    申请日:2004-11-19

    摘要: A thermal transfer-type label printer and an optical disc apparatus are integrated to miniaturize a multi-function label printing apparatus. An information recording/reproducing unit that carries out recording or reproduction of information on a recording surface of an optical disc is incorporated within a disc tray unit of a label printing apparatus that presses a thermal transfer film ribbon, on which printing information has been formed, onto a label surface of an optical disc mounted on a disc mounting part of the disc tray unit, and transfers the printing information onto the label surface using a heat roller. The recording or reproduction of information on the recording surface of the optical disc and the transferring of the printing information on the label surface of the optical disc are carried out on the disc tray unit. When transferring the printing information, the clamping of the optical disc by a disc clamper is released and a turntable and the disc clamper are withdrawn to a non-clamping position.

    摘要翻译: 集成了热转印型标签打印机和光盘装置,以使多功能标签打印装置小型化。 在光盘的记录表面上执行信息的记录或再现的信息记录/再现单元被结合在标记打印设备的盘托盘单元中,该标签打印设备按压已经形成打印信息的热转印膜色带, 到安装在盘托架单元的盘安装部分上的光盘的标签表面上,并使用加热辊将打印信息转印到标签表面上。 在光盘托盘单元上执行在光盘的记录表面上的信息的记录或再现以及在光盘的标签表面上的打印信息的传送。 当传送打印信息时,通过盘夹持器夹紧光盘被释放,转盘和盘夹持器被拉出到非夹紧位置。

    System for positioning a head in a transverse reference position on a
multitrack digital magnetic tape
    5.
    发明授权
    System for positioning a head in a transverse reference position on a multitrack digital magnetic tape 失效
    用于将磁头定位在多轨数字磁带上的横向参考位置的系统

    公开(公告)号:US5299074A

    公开(公告)日:1994-03-29

    申请号:US738223

    申请日:1991-07-30

    IPC分类号: G11B5/55 G11B5/56

    CPC分类号: G11B5/5508

    摘要: A method of, and an apparatus for, positioning a playback head in a transverse reference position on one edge of a multitrack magnetic tape having no track identification data or other positioning patterns prerecorded thereon. A tape drive unit is provided which has an erase head with an erase gap spanning the complete width of the tape. An alternating current generator circuit is connected to the erase head for supplying thereto a constant frequency alternating current to be written as a transverse head positioning pattern by the erase head on selected part of the tape throughout its width. The positioning pattern is then read by the playback head traveling across the width of the tape from an arbitrary position on the tape, in which the playback head is fully opposed to the positioning pattern, toward one edge of the tape while the tape is being driven longitudinally. The alternating current output from the playback head is of full amplitude when the playback head is fully opposed to the positioning pattern, and gradually decreases in amplitude when the playback head starts overrunning the tape edge. The travel of the playback head across the width of the tape is discontinued when the peak value of the playback head output decreases to a predetermined percentage of that when the playback head is fully opposed to the positioning pattern.

    摘要翻译: 一种用于将重放头定位在没有轨道识别数据或预先记录在其上的其它定位图案的多轨磁带的一个边缘上的横向参考位置的方法和装置。 提供了一种磁带驱动单元,其具有擦除头,擦除间隙跨过磁带的整个宽度。 交流发电机电路连接到擦除头,用于向其提供恒定频率的交流电流,以便通过其整个宽度上的磁带的选定部分上的擦除头被写入横向头部定位图案。 然后,当磁带被驱动时,定位图形被从重放头完全与定位图案完全相对的磁带上的任意位置横过带的宽度移动的重放头读取。 纵向。 当播放头与定位图案完全相对时,从重放头输出的交流电流是全幅度的,当重放头开始超过磁带边缘时,其幅度逐渐减小。 当重放头输出的峰值降低到当播放头与定位图案完全相对的预定百分比时,播放头跨越磁带宽度的行程被停止。

    System for positioning a head in a transverse reference position on a
multitrack digital magnetic tape
    6.
    发明授权
    System for positioning a head in a transverse reference position on a multitrack digital magnetic tape 失效
    用于将磁头定位在多轨数字磁带上的横向参考位置的系统

    公开(公告)号:US5287225A

    公开(公告)日:1994-02-15

    申请号:US738127

    申请日:1991-07-30

    申请人: Motoyuki Sukigara

    发明人: Motoyuki Sukigara

    IPC分类号: G11B5/55 G11B27/32 G11B27/36

    摘要: A method of, and an apparatus for, positioning a record/playback head assembly in a transverse reference position on one edge of a multitrack magnetic tape having no track identification data or other positioning patterns prerecorded thereon. A stream of transverse head positioning data, typically representative of serial numbers 1-255, is first written by the record/playback head assembly longitudinally on the tap in a selected transverse position intermediate the opposite edges of the tape. The data are subsequently read and checked for errors. If the thus detected errors are less than a predetermined number, the record/playback head assembly is moved a unit distance toward one tape edge. A similar cycle of operations is repeated until errors are found in the read stream of transverse head positioning data to the predetermined number or more.

    摘要翻译: 一种用于将记录/回放头组件定位在没有轨迹识别数据或其中预先记录的其它定位图案的多轨磁带的一个边缘上的横向参考位置的方法和装置。 通常代表序列号1-255的横向头部定位数据流首先由记录/重放头部组件沿着磁带的纵向位于磁带的相对边缘中间的所选横向位置上。 随后读取数据并检查错误。 如果这样检测到的错误小于预定数量,则记录/重放头组件朝着一个带边移动单位距离。 重复类似的操作周期,直到在横向头部定位数据的读取流中发现达预定数量或更多的错误。