2012年11月25日星期日

CTP plates

Nowadays, CTP plates are commonly adopted by book printing companies or book printing suppliers in mostly all photo book printing jobs due to great advantages of efficiency compared with traditional pre-press workflows.
 
The first time at Drupa 1995 appearance on the CTP by book printing companies, the ups and downs and now has spread to gradually shift from mature. The photosensitive violet CTP in the newspaper's application to become an indisputable fact, commercial printing of thermal CTP has firmly established a foothold. Thermal CTP is widely accepted reason for its own good features and product quality are inextricably linked.

A. People in book printing companies are tired of operating in the darkroom, and thermal CTP using infrared laser to heat to imaging, the user can safely operate in the next room. B. CTP structure is now divided into three types: internal drum, external drum peaceful desktop. The main external drum thermal CTP, this structure makes the plate as the printing press on the same parcel in the drum, the membrane outward, the deformation of the network to reduce to a minimum for photo book printing jobs, and easier to handle large-format plates made of book printing suppliers. C. Photosensitive plate is very sensitive to light, exposure will occur when underexposed or overexposed, halftone halo of light appeared, and also by the interference of light inside the machine, making publication quality becomes difficult to control; and thermal plate To generate the image, must meet the initial energy threshold, higher than the initial value of the energy field will not change dot shape, is the only control the predictable result of technology, quality, easy to control, publication quality and stability. After exposure the plate may be extended to six months to develop and then, no impact on quality. D. Thermal CTP plate of the network real, clear and sharp edges, printing ink easier to achieve balance, beneficial to network control photo book printing. E. With the printing market competition, saving supplies in disguise profits for book printing suppliers. Thermal CTP plates with the real network, sharp edges, easy to dwell characteristics, compared with the conventional PS plate, with a small amount of ink will be able to achieve normal results, save the ink. The rate of anti-Indian version of the case without the roast up to 15 million to 200,000 impressions, baked up to 1 million print edition, also suitable for matte paper and UV inks. F. Thermal CTP so far is the only enables hands-free flushing plate. Although the beginning of the market, but because the plate-free wash or just wash, investment and environmental protection are very beneficial, and for existing thermal CTP devices. G. Thermal plate on the market today manufacturers than violet plate manufacturers and more There are also a production, so customers can have more selective, the price advantage. H. Thermal CTP together with advanced digital printing processes, for network expansion and deformation, so the distribution of ink can be precisely controlled. More importantly, thermal version Caineng fully applicable to the existing printing environment, good printability (including the printing press, plate cleaners, fountain solution alcohol concentration and pH, etc).

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