The patent's inventors are Nishina, Yasuhiro (
This patent was filed on
From the background information supplied by the inventors, news correspondents obtained the following quote: "The present invention relates to an optical disc apparatus that is used to reproduce information recorded on an optical disc and/or to record information on an optical disc.
"Conventionally, an optical disc apparatus has been used to reproduce information recorded on an optical disc such as a Blu-ray disc (hereinafter, abbreviated as BD), a digital versatile disc (hereinafter, abbreviated as DVD), a compact disc (hereinafter, abbreviated as CD), or the like and/or to record information on such an optical disc.
"FIG. 6 is a schematic view for explaining a configuration example of a conventional optical disc apparatus 100. The conventional optical disc apparatus 100 includes a housing 10, a disc tray 20 that is housed in the housing 10 so that it can be pulled out to outside the housing 10 (it can be pulled out in a direction indicated by a broken line arrow) and on which an optical disc is placed, and a traverse chassis 30 that is disposed on a lower portion side of the disc tray 20 as housed in the housing 10 and moves circularly in accordance with an operation of ejecting/retracting the disc tray 20.
"The disc tray 20 is provided with an unshown disc placing portion so that an optical disc can be placed thereon. Furthermore, an unshown cutout is formed at part of a bottom surface of the disc tray 20. With this cutout provided, a space for disposing a turntable (not shown) mounted to a spindle motor 31 on the traverse chassis 30 is secured. Providing this cutout also makes it possible to irradiate an information recording surface of an optical disc with laser light emitted from an optical pickup 33 on the traverse chassis 30.
"FIG. 7 is a schematic plan view showing a configuration example of the traverse chassis 30 included in the conventional optical disc apparatus 100. The traverse chassis 30 has various members mounted thereto, which are required to reproduce information on an optical disc or to record information on an optical disc.
"On a front side F (a side to which the disc tray 20 is pulled out is assumed to be the front) on the traverse chassis 30, there is fixed the spindle motor 31 (see FIG. 6) to which a turntable 32 for holding an optical disc is mounted. Furthermore, on the traverse chassis 30, two guide shafts 34a and 34b in a state of being supported by a support base 38 are disposed parallel to a radial direction of an optical disc (a direction parallel to a direction in which the disc tray 20 is ejected/retracted). The optical pickup 33 that optically scans over the information recording surface of an optical disc is mounted so as to be slidable along these two guide shafts 34a and 34b.
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