Research Of Raster Based On Vector Graph Techniques For PCB Printer

As the increasing of printed circuit board production and improving the productionrequirements, in order to meet the requirements of higher efficiency, lower energyconsumption, lower pollution of sustainable development, the PCB inkjet printingtechnology will become a new trend of the PCB printing production. The PCB inkjetprinting technology is combined the traditional inkjet printing technology with PCBproduction, it will directly be formed the characters and the conductive line on thesubstrate by printing, to be formed a green efficient production mode. The mode needs tobe widely applied in domestic.In this paper, as a starting point of parsing the Gerber file, it proposes a set ofparsing program of Gerber files, and it is formed a raster based on vector graphtechniques for PCB printer. At the part of parsing the Gerber file, it analysis of the syntaxand structure of Gerber file, and use a regular expression analysis method to parse theGerber file, and using reasonable data structure to store the analytical results will help tomake the analytical method versatility. At the part of vector graphics raster of Gerber file,there are three aspects: according to the various diagram elements of Gerber file, thispaper designs a particular raster algorithms, which will greatly simplifies the rasterprocess redundancy operation; according to orderly side table filling algorithm which issuitable for software implementation, and combined with the data characteristics fillinformation of Gerber file, this paper puts forward an algorithm of adaptivethreshold-based filling, and this algorithm is greatly shortening the time of Gerber filesraster at meeting the demand of user’s premises; popularized the orderly side table fillingalgorithm application, which that can only handle the linear edge orderly side table fillingalgorithm in the past improve the practicality of the algorithm which can deal withstraight edges and arcs side.Based on parsing program and raster techniques of the Gerber file, this paperdesigned PCB printer system of rasterized vector graphics which included three modules:parsing of Gerber files，raster of Gerber files and image preview, and completed thedevelopment of the program; analyzed PCB printer system performance of vectorgraphics raster, and analysed the effect of the system about the two aspects of theeffectiveness and speed of raster on Gerber files with CAM350comparative. Currently, the developed PCB printer system of vector graphics raster is tested topromote as a module of the "PCB industrial digital printing system".