Check that the Removable panel, located at the back of the printer, is tightly pushed into the slot and that the knob is in the LOCK position.The paper often feeds in crooked in the rear manual feed slot because there is no paper guide. Open the lid. You can defeat the optical sensor View and download the Manual of HP DeskJet 1220C Printer (page 1 of 49) (English). one sheet of paper into the manual feed tray. I have difficulty in printing the large paper 13X19 manual feed. card or paper into the slot where the plastic tab on the cover usually goes. The Manual feed slot provides a straight paper path for thicker media. Use the Manual feed slot to print thicker paper, envelopes and cards. Follow the The HP Deskjet 1220c series printer can print on the following paper types: Use the Manual feed slot to print thicker paper, envelopes and cards.