A user interface for an electronic trading exchange is provided which allows a remote trader to view in real time bid orders, offer orders, and trades for an item, and optionally one or more sources of contextual data. The UV-curable liquid toner compositions include a dispersion of toner particles in a hydrocarbon based liquid carrier and one or more UV-curable component which form a part of the carrier. The end of the burst sequence is detected if the counting number is within a valid counting range. An inflator 23 is mounted on a side frame 1a by means of a mounting bracket 24 and is disposed above the side frame 1a. A connecting portion connecting the two guiding portions faces the light incident surface.