Abstract
Until today, the printed matter has been taken in in life widely since print technology was developed. It is the act that is given top priority to "how print reproduces a thing pointed out", and, judging from a purpose of a reproduction, a mistake, therefore, to have in print is arrested with a taboo. In this study, I paid my attention to various expression elements being covered there if a printing error to be considered to be this taboo changed a point of view and investigated ability as an expression method.Firstly I investigated a print method and a kind of a mistake by a print process and the origin and made the relation a system.I controlled an accidental expression effect and inspected possibility of expression after having tried reproduction using ink in the graphic soft top and fact next. It was possible for the new expression suggestion that I used an accidental print mistake for by producing several points posters.
