POSITION-CHANGING TYPE STRUCTURE OF GRAVURE ROLL AND BLANKET ROLL, AND PRINTING APPARATUS FOR FORMING PATTERNS AND PATTERN FORMING APPARATUS HAVING THE SAME

摘要

PURPOSE: A structure of a position-changing type gravure roll and a blanket roll, a printing device having the same for forming patterns, and a device for forming patterns are provided to multiply a service life of a blanket roll over two times because a projecting area of patterns can be changed into an unused projecting area at a predetermined point before the service life of an initial projecting area of a blanket sheet is ended. CONSTITUTION: A structure(20) of a position-changing type gravure roll and a blanket roll comprises a gravure roll(210), a first controller(211) and a blanket roll(240). The gravure roll comprises patterns(212) and first rotary shafts in both side end parts. The first controller controls the gravure roll to be moved along a direction of the first rotary shaft. The blanket roll is parallel to the blanket roll and arranged to be contacted and separated.