What is the difference between LPI and DPI?
LPI is used to indicate Lines Per Inch, also known as a line screen. This is what a printing press uses to indicate the resolution of the half-tone screen used when printing (consult with the printing press to obtain this value). DPI is used to indicate Dots Per Inch and is typically used by non-half line devices to indicate how many dots of ink are laid out in an inch (consult the printer manual to determine the DPI resolution that the printer will be using). Some applications also use DPI to indicate the resolution of a file. This, however, is the resolution of a file, which is not made up of physical dots, but rather how many pixels high by how many pixels wide the image is. Any value that contains per inch or per centimeter is only related to an output device as it would relate to a physical representation of the image. A more correct indication would be PPI (pixels per inch) for the resolution of a file as it relates to output. A DPI or PPI value within an image editing applicatio
