Recording/reproducing device

Details Recording/reproducing device Recording/reproducing device

2005-02-01

2005-02-01

Letscher, George J. (Department: 2653)

Dynamic optical information storage or retrieval

Particular cabinet structure for optical media

Environmental control

C423S210000

Reexamination Certificate

active

06851119

ABSTRACT:
A filter arrangement for a recording/reproducing whereinan air filter is adapted to filter an air flow of ambient air present within the housing during operation of the device flowing over an information surface of a rotating information disc disposed adjacent to the information surface in parallel spaced relation thereto,a casing within the housing encasing an information surface of an information disc disposed on the disc driving arrangement and provided with an air inlet for air to be filtered and an air exhaust for filtered air.To decrease the energy consumption of air filtering while ensuring good filtering results, the air filter arranged stationary within the housing to extend over the disc information surface, the airflow flowing axially through the filter and being induced by the naturally occurring pumping action of the rotating information disc, while the air flow resistance of the air inlet, the air filter and the air exhaust exhibit mutually adapted air flow resistance values substantially preventing any air flow from outside the casing, through the casing and out of the exhaust different from the air flow from the air inlet, through the air filter, the casing and out of the exhaust.

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