esc_pos_printer
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IMPRESORA ZKTECO
NO RECONOCE EL ALINIAMIENTO DENTRO DE row
printer.row([ PosColumn( text: 'col3', width: 3, styles: PosStyles(align: PosAlign.left, underline: true), ), PosColumn( text: 'col6', width: 6, styles: PosStyles(align: PosAlign.center, underline: true), ), PosColumn( text: 'col3', width: 3, styles: PosStyles(align: PosAlign.right, underline: true), ), ]);