Protective construction for optical disk units

Details Protective construction for optical disk units Protective construction for optical disk units

G - Physics

11

B

181/65, 352/31.1

G11B 23/00 (2006.01) G11B 7/24 (2006.01) G11B 23/033 (2006.01) G11B 23/50 (2006.01)

Patent

CA 1215000

-0- IMPROVED PROTECTIVE CONSTRUCTION FOR OPTICAL DISK UNITS ABSTRACT An optical disk unit, of the kind having a record element and a flexible cover sheet that are attached around an outer periphery in a manner pro- viding an outer spacing and a generally enclosed inter-space therebetween, has an improved construc- tion which significantly reduces the likelihood of contact between the record element and cover sheet. Central spacing means provide a central sheet-to- element spacing that is significantly larger than said outer spacing and vent means, into and out of the inter-space cause a reduction in the spacing between the record portion of the element and the cover sheet during write/read operation. The air flow through the vent means also reduces the forma- tion of visible debris in the enclosed record element/cover sheet inter-space.

456813

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