A lid for a bowl of a food processor for processing a relatively large size or large volume of foodstuff including a top lid wall and a feed tube extending from the top lid wall along a feed axis. The organic light-emitting device may include an organic layer containing the condensed-cyclic compound. A substrate is treated by processes for forming an electrode layer, an alignment layer and projections as required by general LCD manufacturing. At least one of the plug and receptacle service engagement portions is arcuate thereby enabling engagement to be maintained between the plug and receptacle engagement portions when the plug is rotated about the axis and within the arc-length of the arcuate engagement portion. Increases in production line throughput may result by rapidly cooling the molded material.