text: The first and greatest period of the engraving was from about 1470 to 1530 , with such masters as Martin Schongauer , Albrecht DÃ 1\/4 rer , and Lucas van Leiden .
simplified: The first and greatest period of engraving was from about 1470 to 1530 , with such masters as Martin Schongauer , Albrecht DÃ 1\/4 rer , and Lucas van Leiden .