Print it, mount it, laminate it, post it. For durable, long-term applications, such as signs and posters, use HP Heavyweight Coated Paper. This opaque, bright-white paper makes colorful, medium ink-density images look crisp and smooth. For large-format prints that won't fade for up to 12 months behind a window and up to 20 years indoors under normal office conditions, use HP Heavyweight Coated Paper with HP DesignJet CP Ink System UV.