Abstract: A slitting apparatus including a frame, a rotary shaft mounted on the frame, a plurality of laterally stationary circular blades secured to the rotary shaft, and a plurality of laterally movable circular blades movable in the direction along which the stationary blades are disposed and rotatable in slidable contact with the stationary blades so that a sheet passing through between the stationary blades and the movable blades is slit therewith into plural strips each having a width being adjusted by moving the movable blades. A stationary rack extends in parallel with the rotary shaft. A carrier is movable back and forth along the rack.

Abstract: An adhesive sheet which comprises a support sheet and an adhesive layer containing a migratory substance, disposed on one side of the support sheet. This adhesive sheet may be applied to many types of articles and will leave behind a dye mark on the article indicating that it has been applied and subsequently removed.

Abstract: The apparatus includes a treating container having a light transmission window and a closure member for opening and closing the container, a light source positioned opposite the light transmission window, and equipment for deoxygenating at least a substantial portion of the oxygen from the interior of the container. The container is charged with a semiconductor wafer adhered to a substantially light transparent substrate by a photo-setting adhesive agent. The agent is cured or hardened by irradiation by the light source thereby decreasing its adhesive force. A first cassette casing, a charging conveyor for removing untreated workpieces from the first cassette casing, a charging conveyor for removing untreated workpieces from the charging conveyor into the container can be provided at one side of the container.