The liquid emulsion ink that is is painted or drawn on the lithographic stone in direct lithography to form theimage.Tusche can be used to effect corrections on offset plates if the run is short.

• 乳状液体墨；用来在石版上描绘或书画； 造成直接石印印纹.；制版墨也可以用来修改印量不多的柯式印版。