1CTP Features
Judging from the direct plate making equipment currently in use, there are complete sets of equipment suitable for newspaper printing plants and large printing plants, as well as small plate making equipment suitable for small and medium-sized enterprises. Since the specific service objects of direct plate making equipment are different, the accuracy and other requirements for direct plate making printing plates are also different. Therefore, the characteristics of different types of direct plate making are also different.
The main features of CTP are as follows:
①Completely cancel the film process and corresponding materials, greatly simplifying the process and significantly shortening the plate making time;
②Can output printing plates of various formats to meet the requirements of the printing press;
③The printing plate can be accurately positioned during plate making to ensure the printing plate registration requirements;
④High resolution, with output accuracy of 3000~5000dpi;
⑤Can form 175~300lpi, 256 tone dots;
⑥The plate making speed is fast, and a printing plate can be made in a few minutes;
⑦The four-color printing plate has good overprinting accuracy, meets printing requirements, and can prevent moire caused by dot shape and angle;
⑧ It has good operability and can automatically convey, automatically expose, and develop automatically to ensure that the printing plate production is carried out accurately;
⑨ Can produce good economic benefits.
2CTP improves printing quality
Computer-to-plate recording dots have high quality, small dot changes, and can record FM dots well; the reproducibility of highlight and dark tone dots is good, and the range of tone levels is large; there are no dust or film edge printing problems; the printing plate overprint is accurate The sex was very good. In all cases, superior to CTF traditional processes. Moreover, computer direct plate making has almost no possibility of misoperation of printing plate exposure.
3CTP improves production efficiency and economic benefits
The CTP system eliminates film and related process equipment, greatly shortens printing and plate making time, and improves timeliness. This saves time on manual trimming of dirty spots on the printing plate and edges of the film. Digital imposition replaces the time-consuming film imposition in traditional printing. Compared with traditional plate making, CTP plate making speed can be increased by more than 3 times.
In CTP, exposure and imaging time are core factors affecting productivity, and imaging time increases with resolution. At a resolution of 1200dpi, the minimum imaging time for a 70cm×100cm printing plate is approximately 2 minutes. Some CTP systems have a high degree of automation. If there is sufficient data and printing plate supply, they can be run directly without any operator.
In commercial printing, book printing and newspaper printing, the requirements for plate making productivity are different. In commercial printing, printing plates are completed during daily working hours, usually 10 sheets/hour, and some CTP systems can reach 20~30 sheets/hour. In newspaper printing, a large number of printing plates must be completed in a short period of time (a few hours). The quality is lower than that of commercial printing. The imaging resolution of newspaper printing is also low, usually between 800×1400dpi, so that Relatively shorten imaging time. Some newspaper CTP systems can achieve a productivity of more than 100 sheets/hour.
Computer-to-plate printing has cost advantages. Since the cost of film and its development processing is eliminated, the consumption of trial printing waste paper, ink, and fountain solution is reduced, the utilization rate of printing machines and post-press processing equipment is improved, and pre-press and printing preparation time and personnel are saved. Reduce costs. In particular, printing presses that apply digital ink presetting technology can shorten the production, accurate registration and ink presetting time according to the printing plate itself, saving adjustment time, good record repeatability, and printing adjustment time during replenishment. short. The CTP system has realized the unification of data exchange and format from prepress to printing control system.
Huida Print-All Technology company is an advanced and professional manufacturer of producing printing plates, mainly sales CTP, CTCP, and PS plates as well as offering ODM/OEMs, especially for the offset. For more information, please click the official website link here: https://www.huidaoffsetplate.com/.