Alpha Idea

var new_printjob = new printjob();
var myresult = new_printjob.start();
page_count = _level3.rosterstage2._height / 800;
if(myresult){
 for (i=0;i<page_count;i++){
  j = i + 1;
  myresult = new_printjob (_level3.rosterstage2, {xmin : 0, 
  xmax: 480, ymin: i*800, ymax: j*800}, {printasbitmap:true});
  //_level3.rosterstage2 是mc的名字,也可打印整个_level3
 }
}
new_printjob.send();
delete new_printjob;