Embroidery data preparing device

An embroidery data preparing device for preparing embroidery seam data from an original picture pattern having an original picture for an embroidery pattern, including:

• original-picture data preparing means for reading out the original picture pattern to prepare original picture data of bit image data;
• intermediate embroidery data preparing means for dividing the original picture data prepared by said original-picture data preparing means into a plurality of closed areas to prepare intermediate embroidery data comprising coordinate data which define the plurality of closed areas;
• intermediate embroidery data storing means for storing the intermediate embroidery data which are prepared by said intermediate embroidery data preparing means;
• size setting means for setting a plurality of different pattern sizes;
• embroidery seam data preparing means for collectively preparing a set of embroidery seam data for each stitch of every pattern size on the basis of the plurality of pattern sizes set by said size setting means and the intermediate embroidery data stored in said intermediate embroidery data storing means;
• and
• embroidery seam data storing means for storing each set of embroidery seam data for each pattern size of the plurality of different pattern sizes which are prepared by said embroidery seam data preparing means.