The copper market remains under pressure at the start of this week's trading, as last Friday's poor US jobs data continues to negatively impact market sentiment. A strong Chinese CPI number over the weekend was seen by many traders as an additional negative factor for copper prices this morning, as higher inflation levels could limit the PBOC's ability to ease Chinese monetary policy again in the future. A report that Japanese copper output over the next six months is going to be 25% higher than 2011's levels may also have a limited impact on the copper market as last year's production levels were clearly impacted by earthquake and tsunami problems.