Patent ID: 8453568

Claim:
A method of moving a first printing table and a second printing table between a workpiece introducing section and a workpiece printing section of a screen printing apparatus, which method comprises the steps of: locating said first printing table in position in a first one of a workpiece introducing section and workpiece printing section at a first level; locating said second printing table in position in an other section of the workpiece introducing section and workpiece printing section at the first level; moving said first printing table in a horizontal direction from said one of said workpiece introducing section and workpiece printing section to the other section of the workpiece introducing section and workpiece printing section; and moving said second printing table in a horizontal direction at the first level from said other section of the workpiece introducing section and workpiece printing section to said first one of said workpiece introducing section and workpiece printing section, wherein, during the movement of said first printing table from said first one of said workpiece introducing section and workpiece printing section to said other section of the workpiece introducing section and workpiece printing section, said first printing table is vertically moved from the first level to a second level that is different from the first level so that said first printing table can pass by said second printing table without any collision therebetween, and then is vertically moved from the second level to the first level before said first printing table reaches said other section.