HUDSON, N.H., March 20 - Presstek, Inc., a leading provider of direct digital imaging technology, today announced that the DocuColor 233 DI press has received UL certification by Underwriters Laboratories. The first UL certified versions of this press were shipped this week from Presstek's manufacturing partner in Japan. "We are pleased that this milestone has been achieved,'' said Efrem Lieber, vice president of sales, marketing and customer support at Presstek. "This press joins Presstek's family of DI-enabled, environmentally-friendly presses that deliver high quality, increased productivity, and cost effectiveness to end users. It is our expectation that this press will be well-received by customers in the short-run color market of 350 to 20,000 copies.'' Presstek, Inc. is a leading developer of digital laser imaging and chemistry-free plate technologies for the printing and graphic arts industries. Marketed to world-leading press manufacturers and directly to end users, Presstek's patented DI, CTP and plate products eliminate photographic darkrooms, film and toxic processing chemicals, reduce the printing turnaround time and lower the production costs. The company's Lasertel subsidiary supplies it with the valuable resources necessary for its next generation laser imaging devices.