DI press


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DI press

(Digital Imaging press) A four-color digital offset printing press that uses lasers to thermally image the printing plates "on-press." DI presses provide better registration, broader color gamut with higher density, less dot gain and sharper details than traditional offset presses, where the plates are created "off-press" via exposure to film or on a computer-to-plate system (see CTP). DI presses accept only blank plates, and all four plates (CMYK) are simultaneously imaged with great precision. In addition, DI presses are waterless and do not require continuous ink-water balancing. Designed for fast make-ready and short runs, the entire operation is automated, from plate advancing to imaging, printing and cleaning.

The DI direct-to-press method was invented by Presstek, Inc., Hudson, NH (www.presstek.com), and the company licenses the technology to DI press manufacturers. In partnership with Presstek, Heidelberg was the first company to introduce a DI press in 1993. Initially using spark discharge technology for imaging, lasers were used in subsequent models. See CTP, digital printing, prepress and offset press.
References in periodicals archive ?
Respondents also reported that volumes for DI press and toner-based printing are increasing, while conventional offset volumes are declining," added McHugh.
Our research also indicated that print volume on these presses is increasing, which suggests that printers are building their businesses around their DI press.
Ryobi is also unveiling its RYOBI 784EP, a B-2 size 4-color, 6-up offset unit with an automatic convertible perfecting device, and the RYOBI 3404X-DI (UV), a deluxe DI press with UV curing capabilities.
According to InfoTrends research, the Presstek DI delivers a 50 percent cost savings on average per letter-size page when compared to a high-volume production color digital press and job profitability is 13 percent higher on a DI press when compared to a conventional offset press.
Tully also plans to utilize the DI press to produce four-color letter-size envelope.
For the future, Jungels expects to have many more customers excited about the short-run quality printing being produced by the new DI press.
Revenue from the growth product portfolio was up 22% over the prior year period, led by a 24% increase in DI press sales.