Incorrect. PPI and DPI, at least when the terms are used correctly, are very distinct. PPI refers to the number of image elements ("picture element", therefore "pixels") per inch. DPI refers to the number of dots the printer's marking engine (that portion of a printer or imagesetter that actually makes marks on the paper or film). DPI is never the correct term when referring to digital image resolution. When you print an image, PPI is still the term that's correct when discussing how many pixels are reproduced in every linear inch on the print. It is a measure of the potential image quality, but only when the image is actually printed. Also, its not the PPI stored as a crib note in the image file, but the effective PPI on the paper after all image scaling is accounted for. DPI is a measure, to a degree, of the maximum inherent resolultion of a particular printer. You must also take into consideration the number of dots necessary to reproduce a full range of colors. Inkjet printer must put these dots beside each other while dye-sub printers actually stack them on top of each other so a 300dpi dye-sub produces resolution that requires that an inkjet be capable of 1200-2400dpi to match.