A light emitting device, including a light emitting element, and a resin layer that has been screen printed to coat said light emitting element is provided. An external result provider process is initiated that establishes communication between the search support system and a data source external to the search support system, for a virtual index referenced in the request parameters. The porous matrix of material has a porosity gradient of 0% to about 80%, the pores being completely or partly filled with material. The part location system then sends the RFQ to suppliers via the communication network. A value of the first spacing is obtained as a protrusion height of the second protrusion from the first protrusion when the second protrusion contacts the recording medium, the value of the first spacing being determined where an absolute value of a change rate of the residual magnetization is less than a predetermined standard value.