HP Deskjet 6540 Color Inkjet Printer - Manual (Page 162)

3. Release the paper lever.
4. Slide the paper-width guide against the edge of the envelopes.
Printing
1. If necessary, open the Page Setup dialog box and set the paper size, scaling,
or orientation options.
2. Open the Print dialog box.
3. Select the Paper Type/Quality panel, and then select the following settings:
• Source: Rear tray
• Paper Type: Plain paper
4. Select any other print settings that you want, and then click Print.
16.3.5 Problems with the Auto Two-Sided Print Accessory with Small
Paper Tray
Do not clear a paper jam from the front of the printer.
HP Deskjet 6500 series printers User's Guide
162