In data processing,a method of printing in which a line is printed from left to right and the next from right to left,saving time by avoiding unnecessary carriage movement.

• 数据处理技术的一种打印方法,采用此法时,头一行的打印方向是从左到右,下一行则是从右到左。这样,就避免了不必要的托架移动,从而节省了时间。