image sensor attached thereto yet they must be slender enough to bend in order to permit the small motion of the platform in the x y plane required for the dithering of the image sensor the dither assembly 36 is held on the base plate by a suitably apertured cover plate 84 referring now to fig4 an alternate embodiment of the dither assembly is illustrated in this embodiment fewer levers are employed each having a higher mechanical advantage than the arrangement disclosed for the preferred embodiment to accomplish substantially the same result it will be understood that many such variations are possible to provide the dithering motion desired without departing from the spirit of the present invention while the invention has been described with particular reference to the preferred embodiments it will be understood by those skilled in the art that various other changes may be made and equivalents may be substituted for elements of the preferred embodiment without departing from invention for example the invention has been described as relating to mounting an image sensor on the platform for dithering movement however it will be appreciated that a source image to be scanned such as a 35 mm transparency or other image source can be mounted on the dithering platform for movement relative to a stationary image sensor with equally satisfactory results similarly other elements in the optical path such as a mirror or other optical element can be mounted on the platform for.