Abstract: A substrate cleaning station includes a first index table supporting thereon at least three circumferentially spaced first substrate carriers on which hard disk substrates are mounted respectively. A substrate drying station includes a second index table disposed rearward of the first index table and supporting thereon at least three circumferentially spaced second substrate carriers on which cleaned hard disk substrate are mounted, respectively. Upon rotation of the first index table, each of the first substrate carriers moves successively through a substrate mounting position, a substrate cleaning position and a substrate removing position. Likewise, upon rotation of the second index table, each of the second substrate carriers moves through a substrate mounting position, a substrate drying position and a substrate removing position.

Abstract: An apparatus for cleaning and then drying batches of hard disk substrates includes a substrate cleaning station and a substrate drying station. The substrate cleaning station includes a first index table supporting thereon at least three circumferentially spaced first substrate carriers on which hard disk substrates are mounted respectively. The substrate drying station includes a second index table disposed rearward of the first index table and supporting thereon at least three circumferentially spaced second substrate carriers on which cleaned hard disk substrate are mounted, respectively. Upon rotation of the first index table, each of the first substrate carriers moves successively through a substrate mounting position, a substrate cleaning position and a substrate removing position. Likewise, upon rotation of the second index table, each of the second substrate carriers moves through a substrate mounting position, a substrate drying position and a substrate removing position.

Abstract: A cultivating system including a tractor, a cultivating machine for performing a cultivating work in combination with the tractor, and a link mechanism for linking the tractor and the cultivating machine, includes a free-motion mechanism provided to at least one of the tractor, the cultivating machine and the link mechanism, and having a free motion permissible zone in which at least one of the tractor, the cultivating machine and the link mechanism is freely movable relatively to the others in accordance with variation of a cultivation attitude of the cultivating machine due to variation of a cultivation environment, a cultivation-condition control mechanism for detecting the free motion of at least one of the tractor, the cultivating machine and the link mechanism within the free motion permissible zone in accordance with the variation of the cultivation environment, and moving the cultivating machine in accordance with the free motion permissible zone so as to offset the variation of the attitude of said c

Abstract: An apparatus for grinding hard disk substrates includes a dressing unit essentially radially movable across the faces of rotating of grinding wheels for simultaneously dressing one or both of the two confronting surfaces thereof. The apparatus thus constructed is suited to fully automated grinding/dressing operations.

Abstract: An apparatus for cleaning and then drying batches of hard disk substrates includes a substrate cleaning station and a substrate drying station. The substrate cleaning station includes a first index table supporting thereon at least three circumferentially spaced first substrate carriers on which hard disk substrates are mounted respectively. The substrate drying station includes a second index table disposed rearward of the first index table and supporting thereon at least three circumferentially spaced second substrate carriers on which cleaned hard disk substrates are mounted, respectively. Upon rotation of the first index table, each of the first substrate carriers moves successively through a substrate mounting position, a substrate cleaning position and a substrate removing position. Likewise, upon rotation of the second index table, each of the second substrate carriers moves through a substrate mounting position, a substrate drying position and a substrate removing position.

Abstract: An apparatus capable of simultaneously polishing a plurality of hard disk substrates at the same time includes at least three substrate carriers which are rotatably disposed on an index table and which carry and transfer a plurality of hard disk substrates, are moved successively through a substrate loading station, a substrate polishing station and a substrate removing station in response to intermittent rotation of the index table.