HL-4570CDWT FAQs & Troubleshooting HL-4570CDWT Not your product? Sort by: Updated Date Popularity 4 Results 1. 03/24/2016 Stop the paper feeding twice through the machine when printing single pages with 2-sided(duplex) switched to on in the printer driver. (For Windows Only) 2. 09/06/2010 Curled or wavy 3. 09/06/2010 Envelope creases 4. 09/06/2010 Wrinkle Paper Feed / Paper Jam FAQs & Troubleshooting