Anti-offset Powder

A fine powder sprayed over the printed surface of coated paper as sheets leave a printing press to prevent ink from offseting from one printed sheet to the back of the next while wet. Anti-offset power allows printing on media that is more difficult for the ink to quickly dry on.

Presses commonly time pulses of power to each emerging sheet.

IR dryers can reduce the need for powder.

Careful ink choice can also reduce the need for powder, but at the cost of other ink properties and price for quick drying inks.

Anti-offset powder is also termed dust, offset powder, powder spray, and spray powder.