Disclosed are systems, methods, and non-transitory computer-readable storage media for implementing a conference foyer for conferencing. When the sheet starts moving after the stopped state in order for the inkjet head to apply ink to the sheet, control is performed so that at the location, the sheet continues to be heated by the heating unit and is cooled by the cooling unit at a lower power than in the stopped state. The data record contains a reference number and data that characterize the postal item and the shipping details. The reflector includes a reflector body and a plurality of reflecting structures formed on the reflector body and extending along a second direction. The back light unit includes a light source having a holographic pattern formed on a surface thereof opposite the display device which is to display a picture, and a reflective plate under the light source.