3.Why printing in high resolution and what is D.PLI.?
DPI is the measurement used within the printing and graphics design industry to determine how sharp an image is. Web graphics, online pics, etc. are normally created at 72dpi (dots per inch), this low resolution is great for the web because the images look excellent on a computer monitor and the file sizes are very small. When designing graphics for printing purposes, your images should be 300dpi or better. Essentially what this is doing is displaying more information (or dots) for every square inch of the image you are viewing. The more dots used, the sharper the image, it's really that simple. Color printing will look blurry if a 72dpi artwork is used. So please make sure you have your images at 300dpi before you submit your files.