After more than 28 years as director of marketing and corporate communications at Koenig & Bauer AG, Klaus Schmidt will be retiring from the company at the end of October. His duties will then pass to Dagmar Ringel, who was most recently director of public relations for technology group ZEISS.      As longstanding director, Schmidt represented the managerial staff on the supervisory board of Koenig & Bauer AG from 1993 to 2016.   Ringel can draw on more than 20 years of experience in...