Harper Corporation of America announced that Sean Teufler is returning to the company to assume the role of technical director. He had previously worked for Harper Corporation for more than 13 years serving as an HGS technical advisor, a technical manager, and most recently, corporate technical manager.   Teufler has worked in the printing industry since 1991 and has held a variety of roles including ink technician for a printing company, technical service/sales/management for Harper, and cons...