The DOT Proofing System Based On GDI Technology

With the development of the printing industry, in particular the popularity of computer to plate technology, printing companies to phase out the traditional proof, gradually entered the era of digital proofing. However, the common digital proofing using FM screen dot printing, not a good simulation of the actual printing in the AM dot printing, particularly Rosette, Moires, the Tone jump and other issues are not well Simulation, to the printing business is a big trouble. Printing companies need to really dot proofing system.Meanwhile, true dot proofing software is a huge development costs because interface technology and other issues, resulting in software is expensive, not popular in the market.The project design, the use of open technology, in particular, many of the system architecture and interface windows on the general function, making the process relatively low development costs. True for the development of a low-cost outlets to make the attempt proofing system.The project design is to design a system to complete the three functions:(1) synthetic images(2) print the image(3) calibration images.In the composite image moudle, the development of dot synthesis and color conversion. The module is the four lbittiff files (respectively C, M, Y, K) the synthesis of color documents, and convert it to windows system to support the RGB mode. While the large file compression.In the Print moudle, the development of image scaling to meet the printer resolution. Extract the module is compressed into a file and the original image reduced to 2400dpi 1200dpi,and Output printing.In the calibration images moudle, we use the first two modules, the output print a series of color target, by measuring the color target, production files for color correction of the ICC.