| 摘要 |
A disk cartridge has a various means for clearly delineating the cartridge from foreign objects which may cause damage to a disk drive. In one embodiment. one or more serial reflectors are embedded within a cartridge so as to return a reflected illuminance pattern distinguishable from a flat specular or flat diffuse surface. In another embodiment, optical pipes carry light from an disk drive mounted emitter to a location where the light is detected by the drive such that the light is not mistaken for reflective light. In another embodiment, a light emitting source such as an LED is embedded in a cartridge such that the intensity of light emitted from the LED in cooperation with reflected light is sufficiently intense to identify the cartridge as a valid cartridge. These embodiments may be rotatable so that a single cartridge may be compatible with more than one drive type.
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