Bar Code / Identification Tag report shrinks


I am using barcode in the identification tag report, from day 1 it is working fine. But all of a sudden 2 days before near about @12.00 pm my report (identification tag report) gots shrink. I am using TSC and Argox printer to take print out. I have demo seperate application. I have export from demo and imported in my live application, still report is getting shrink. At a time I am using same report, same printer with same settings with demo and live application. Demo it is printing ok and live it is getting shrink.

Can anybody help me?