Tinting: An offset printing defect in which an all-over colour tint appeared on the press sheet. It may be caused by the ink pigment dissolving in the dampening solution or contaminated by loose paper coating of coated paper.

• 着淡色：柯式印刷的一种故障。是 整个印张表面印上了很淡的墨色的情况。成因可能是油墨颜料，造成污染所致。