摘要:
A cleaning device (1) for cleaning a lens of an optical head of an optical disc drive unit comprises a carrier disc (2) similar to a compact disc or a CD-ROM disc for inserting in a disc receiving area of the optical disc drive unit. A brush type element 97) comprising a woven base member 99) with tufted filaments (10) extending from the base member (9) is located in a receiving recess (5) in the carrier disc 92). The filaments (10) are flexible relative to the base member (9), and the tufting of the filaments in the base member (9) permits limited hinging of the filaments (10) relative to the base member (9). The depth of the base member (9) is less than the depth of the receiving recess (5), and the area of the base member 99) relative to the area of the receiving recess (5) is such as not to inhibit the flexibility of the filaments (10) relative to the base member (9). The carrier disc (2) is rotated in the disc receiving area of the optical disc drive unit, so that the brush type element (7) wipes the lens of the optical head for cleaning thereof.
摘要:
A cleaning device (1) for cleaning components (4,5,6,7,9,10,11) of a video unit comprises a cassette housing (15) having a pair of spools (24) rotatably mounted therein. A cleaning tape (30) is wound onto the spools (24) and is transferred from one spool (24) to the other on rotation thereof. The cleaning tape (30) when in a cleaning position engages the components (4,5,5,7,9,10,11) of the video unit. The cleaning tape (30) defines a central longitudinal central axis (46) which defines a sinusoidal waveform so that as the cleaning tape is wound from one spool (24) to the other along the magnetic tape path, the cleaning tape (30) cycles progressively over the components (4,5,6,7,9,10,11) for cleaning the magnetic tape path area (40) of the component and margin areas (41,42) on opposite sides of the area (40). The cycling of the cleaning tape (30) may be achieved by mechanical means.
摘要:
A protective device (1) for protecting an optical head (2) of a disc drive unit against dirt and dust and shock when the disc drive unit is not in use comprises a carrier disc (5) similar to a music CD disc for engaging in the disc receiving area of the disc drive unit. A brush member (6) located on the carrier disc (5) at a position corresponding to the inner data track (10) of a music CD disc is provided for engaging a lens (3) and a peripheral portion (7) of a lens carrier (4) of the head (2) when the head (2) is in the inactive position for protecting the lens (3) and the peripheral portion (7) against dirt and dust. Fibres (15) of the brush member (6) are of sufficient length to engage and embrace the lens (3) and the peripheral portion (7) of the lens carrier (4) when the head (2) is in the inactive position. The fibres (15) are of sufficient resilience for also protecting the head (2) against shock. The brush member (6) also cleans the lens (3) as the brush member (6) passes by the lens (3) on insertion and ejection of the carrier disc (5) in and from the disc receiving area. Further cleaning can be achieved by activating the disc drive unit for causing the head (2) to go through a number of data focusing cycles for urging the lens (3) into and out of the brush member (6).
摘要:
A protective device (1) for protecting an optical head (2) of a disc drive unit against dirt and dust and shock when the disc drive unit is not in use comprises a carrier disc (5) similar to a music CD disc for engaging in the disc receiving area of the disc drive unit. A brush member (6) located on the carrier disc (5) at a position corresponding to the inner data track (10) of a music CD disc is provided for engaging a lens (3) and a peripheral portion (7) of a lens carrier (4) of the head (2) when the head (2) is in the inactive position for protecting the lens (3) and the peripheral portion (7) against dirt and dust. Fibers (15) of the brush member (6) embrace the lens (3) when the head (2) is in the inactive position.
摘要:
A cleaning device (1) for cleaning a video head and drum of a video recorder and/or playback unit comprises a housing (6) within which a carrier arm (28) is pivotally mounted and carries a cleaning brush (29) and is pivotal from a retracted position (28) within the housing (6) to a treating position with the cleaning brush (29) in cleaning engagement with the drum (2) under the action of a torsion spring (33). A retaining rib (48) extending inwardly from a lid (20) of the housing (6) acts on the cleaning brush (29) for retaining the carrier arm (28) and the cleaning brush (29) in the retracted position. An abutment edge (50) on the carrier arm (28) is positioned so that as the housing (6) is being lowered into a cassette receiving area (5) of the video recorder and/or playback unit, the abutment edge (50) is located behind a tape withdrawal roller (3) prior to the retaining rib (48) disengaging the cleaning brush (29). Accordingly, the carrier arm (28) and the cleaning brush (29) are retained in the retracted position by the tape withdrawal roller (3) until the tape withdrawal roller (3) commences to move outwardly of the cassette receiving area (5), thus preventing any danger of the carrier arm and cleaning brush becoming entangled with the tape withdrawal roller (3) or any other tape withdrawal rollers until the tape withdrawal rollers have moved outwardly of the cassette receiving area (5).