Abstract: A photographic printing or enlarging apparatus incorporates a negative carrier, a lens stage, and a positioning device for positioning the lens stage toward and away from a negative carrier. The positioning device comprises a body and one or more push rods each of which is mounted on, and releasably secured to, the body for movement in the direction of its length. A selected push rod is positioned to engage the lens stage, or a part of the apparatus connected to the lens stage, to fix the position of the stage relative to the negative carrier in accordance with the predetermined setting of the selected push rod. The positioning device may incorporate a plurality of push rods or may incorporate a single push rod that may selectively be extended and locked in an extended position to contact a portion of the apparatus connected to the lens stage for fixing the distance between the lens stage and the negative carrier.

Abstract: A photographic printer is provided with a control unit mounted on the top thereof having a plurality of control switches secured thereto. The controls thus mounted on the control unit are those whose use is normally required in the daily operation of the printer. Selected controls are concealed by the control unit and are accessible only by pivoting the control unit to expose such selected controls. The selected controls relate to those functions which need to be adjusted or set infrequently.