screendream

DPI or dots per inch is a measure of the resolution of a printed document or digital scan. The higher the dot density, the higher the print or scan resolution. As a rule, DPI is a measure of the number of points that can be placed in a line inside an inch. Higher DPI means sharper image. A higher resolution image provides more information to the printer and the printer device. You can get more  detail from images with higher DPI.  A lower DPI creates an image with fewer dots when printing. No matter how powerful your printer is, a low-resolution image does not provide enough raw data to create high-quality images. The ink will spread across the page, making the edges look blurry. Similarly, computer screen will measure the pixels per inch, or PPI, of a video display. The printer usually has to offer a higher DPI to match the color quality and resolution of the PPI video screen. This is due to the limited color palette in printers. The terms dots per inch (DPI) and pixels per inch (PPI)