In the selection of drum-type imagesetter usually visible red laser do light sources, small size, long life, easy-to-modulational, taking the slides can also be continuous.

• 边滚筒式激光照排机凡是采取可见的赤激光怠工光源，体积小，寿命不幼，易于调制，动片方法可不断也可单张。