Extremely smooth, uncoated paper, requiring heatset printing.

Paper that has been smoothed and compacted between the rolls of a calender and is thus more or less glossy (sharp or matt calendered). The effect produced in the calender unit is the result of friction combined with temperature and pressure.

Paper with a smooth finish produced by its being passed through the calender of a papermaking machine.

Paper polished to a high glaze by pressure or friction from calendering rollers.

Paper which has been given a smooth surface passing it through stacks of highly polished heated rollers (known as calenders). There are variations to the technology: for example in a supercalender some of the rollers are made from compressed fibre and in a soft calender the paper is passed between rollers made from steel and hard rubber.