Design tool flex fixes required

Hello Guys, We are creating a design tool in flex which needs to be integrated with wordpress later on. However, we are stuck the resolution of image output. Basically in flex we are getting an output as a raster image png file. However, we want it to be a vector file as an output. Our main goal is to get a high quality image with high resolution because we want to print it on a printer and file size would be 13'' by 17'' feet. Please contact us if you have an expertise and we will share more details. Best Regards, Mindinventory