陰陽角線是指裁切線(xian)(xian)印在(zai)(zai)紙張周邊用于 指示裁切部位的(de)(de)(de)線(xian)(xian)條。將(jiang)排版(ban)頁(ye)(ye)面(mian)(mian)(mian)(mian)設(she)定(ding)(ding)為實(shi)(shi)際(ji)的(de)(de)(de)尺(chi)(chi)寸，印前(qian)工(gong)作站和照(zhao)排機不(bu)能記錄超(chao)出(chu)頁(ye)(ye)面(mian)(mian)(mian)(mian)范圍的(de)(de)(de)出(chu)血部分(fen)。如果(guo)，想得到(dao)正(zheng)確的(de)(de)(de) 出(chu)血，就(jiu)不(bu)得不(bu)在(zai)(zai)排版(ban)軟件中(zhong)改變頁(ye)(ye)面(mian)(mian)(mian)(mian)尺(chi)(chi)寸來(lai)調整實(shi)(shi)際(ji)頁(ye)(ye)面(mian)(mian)(mian)(mian)尺(chi)(chi)寸和 出(chu)血。這必定(ding)(ding)要有更大(da)的(de)(de)(de)頁(ye)(ye)面(mian)(mian)(mian)(mian)尺(chi)(chi)寸，以(yi)便(bian)人(ren)工(gong)畫出(chu)并(bing)放置裁切線(xian)(xian)，這樣(yang)做就(jiu)容易出(chu)錯。現在(zai)(zai)的(de)(de)(de)印前(qian)設(she)備不(bu)再受這些限制的(de)(de)(de)阻礙(ai)（現在(zai)(zai)的(de)(de)(de)照(zhao)排機可以(yi)照(zhao)排記錄更大(da)的(de)(de)(de)幅面(mian)(mian)(mian)(mian)和使(shi)用更寬的(de)(de)(de) 膠片）。大(da)多(duo)數的(de)(de)(de)打印設(she)備都建議將(jiang)文件尺(chi)(chi)寸設(she)定(ding)(ding)為頁(ye)(ye)面(mian)(mian)(mian)(mian)實(shi)(shi)際(ji)尺(chi)(chi)寸，讓應用軟件自(zi)動產生正(zheng)確定(ding)(ding)位的(de)(de)(de)裁切線(xian)(xian)。