i'm using fastreport and ZPL printer. i designed my report with barcode and try to print from ZPL (Zebra ZM400) printer. it's decreasing darkness 15. i set it 30. print the document again and sender decreased it 15 again. so dont print anything. label is out but nothing on it,it is null. Anyone help ?
i solved this problem. Changed darkness on printer settings on windows. my new question is how can i send print without driver on LPT1 port ?