The paper acts as a blotter. When the paper is less porous, the ink is not absorbed quickly enough and smearing occurs. You will need to try different papers before you can settle on one that provides you with acceptable results. Most inkjet printers will accept up to 28lb bond papers. Heavier stock will stress the components and may cause jams.
Laser printers are the preferred printing option.
A wider variety of paper types will produce excellent results and you can more easily print on different sized papers, envelopes and labels. Similar to photocopiers, laser printers form characters by applying toner to the paper. In the final stage, a fusing roller permanently bonds the toner under very high heat. The cost of specialty papers including envelopes and labels is relatively high on a cost per sheet basis. The investment in quality and appearance means everything if your proposal is accepted or if the r sum you sent results in an invitation to an interview.