A treatment device

A cleaning device (1) for cleaning a video head and drum of a camcorder comprises a housing (2) for engaging the cassette receiving area of the camcorder. A brush (5) on a carrier arm (3) is urged from a rest position within the housing (2) into cleaning engagement with the head and drum under the control of a control mechanism (7). The control mechanism (7) is powered by a drive spindle in the cassette receiving area. A retaining latch (10) secured in the housing (2) comprises a camming member (14) for engaging the carrier arm (3) for retaining the carrier arm (3) and the brush (5) in the rest position. A portion (30) of the retaining latch (10) is resilient for urging the retaining latch (10) downwardly for retaining the carrier arm in the rest position. An engagement member (25) on the retaining latch (10) engages a light post (28) in the cassette receiving area as the housing (2) is being lowered into the cassette receiving area for releasing the retaining latch (10).