Enter the width and height of your envelope and. For more printing options, see Tips for print success on page 49. Step 1: Download and install the HP Smart app, and launch it. 10) HP Officejet Pro L7780 HP Officejet Pro K5400 $449 Average retail price (price may vary) $119 Average retail price (price may vary) HP Officejet Pro L7590 features plus: Built-in wireless networking2 Included Readiris Pro Optical Character Recognition (OCR) Software Second 350-sheet paper tray included Professional color The software does not print the postage bar code. 0 and Wireless, 60-sheet input tray, 35 page Automatic Document Feeder, 2. Exiting ink-backup mode Install two print cartridges in the printer to exit ink-backup mode. To print in Green, you need Cyan and Yellow, so to print in Black you may be missing magenta. How do i print envelopes on my hp officejet 3830 Add to My library Download manual Print page.