[Koha] To print barch barcodes on Zebra GK 420T

Hi to all, I have to print big batches of barcodes with Zebra GK 420T. I try to use the pdf files created with Koha's Label Creator Module. In fact the print isn't correct. Positions of barcode are not not correct on the first 10 barcode, correct on 11°-20° barcode, not correct from 21° barcode until the end. So I try to work with CSV export of barcode labels. Do you have experience with this printer ? Do you have/develop specific routines to handle barcodes from csv export with this printer ? Cheers Zeno Tajoli -- Dott. Zeno Tajoli tajoliAT_SPAM_no_prendiATcilea.it fax +39 02 2135520 CILEA - Consorzio Interuniversitario http://www.cilea.it/disclaimer