An ink jet printer includes a carrier for mounting a first printhead and a second printhead. Software analyzes these images to identify large and small features of the subject and to use these features as landmarks to create in computer memory a corresponding map that is highly accurate and data rich with pixel-level data about the subject’s color, light value and texture characteristics. Here, the actuation element should be movable in the same direction in which the weight moves, preferably in a vertical direction.