USD/JPY rose yesterday. It is now challenging its recent highs at 84.48 (17/12/2012 high). Hourly supports can be found at 83.61 (l17/12/2012 low) and 83.25 (intraday low).
The general overbought conditions and the strong resistance at 84.18 suggest an upcoming short-term phase of weakness.
USD/JPY is likely in a long-term bottoming process. The break of the key resistance at 80.62 (25/06/2012 high) opens the way for further medium-term strength. A strong long-term resistance is at 85.53 (06/04/2011 high).