Mechanical ghosting: A defect of letterpress and offset printing. It is caused by uneven ink distribution of the plate inkers. Offset would have the additional cause of an engraved blanket.

• 机械性鬼影:是活版或柯式印刷的故障。主要是版墨辘供墨不匀所引致。柯式印刷更会因胶布有凹痕而引致。