Alv report: the layout is only printed 255 column,others is truncated

Hi All,

My problem is that I use ALV to output my report layout to printer, My report layout is more than 255 column, But the printer only print 255 column,Others is truncated,the printed report shows the the 255 column already reach to the rightest.

Have anybody some idear or suggestion about this probelm, Please let me know ,Thanks.