Chapter3 Handling • If vibrations or shocks are applied to the printer during transporting or installing the printer, it may cause drop in barcode rank. In that happens, barcode rank may improve by carrying out [Bi- directional Printing Adjustment]. ( "Vertical Alignment" on page 209 ) 109 2D Symbols Orientation Minimum module size [in units of 600 dpi] ANSI Grade D or higher ANSI Grade C or higher Plain Paper Matte Paper Syn- thetic Glossy Paper Glossy Film High Glossy Paper GS1 DataBar Stacked Omnidirectional - 10 5 5 5 5 5 GS1 DataBar Expanded Stacked - 10 5 5 5 5 5