Abstract: The invention relates to a device for simultaneously printing and developing photographs, of the type essentially comprising three main assemblies, namely, respectively:a first exposure assembly A,a second assembly B in camera obscura;a third developing assembly C,characterized in that the cutting part of the fixed knife defines on the light-sensitive paper the part exposed by the light beam issuing from the lens.

Abstract: A single-piece transparency frame for holding a film therein comprising: a window-shaped opening, the width and length of which on the front face are greater than the useful length and width of the film to be inserted, and on the rear face are less than that length and width; two horizontal grooves provided in the plane of the film in the lengthwise direction of the film; two narrow sides located on the front face of the opening which are extended by parallel slots which in turn open into said horizontal grooves.

Abstract: A subtractive filter having three elementary filters, each comprising a fixed cylindrical central portion having at its center a channel for the passage of the light and on its surface a radial milled slot; a rotary ring concentric to the said fixed cylindrical central portion having a graduation on its central periphery, the inside of said rotary ring having the shape of a logarithmically progressive ramp; and a filter holder comprising a frame adapted to slide in the said radial milled slot in the fixed cylindrical central portion, the bottom of said frame having the shape of a rounded point which rests against said ramp and the top of said frame having a spring resting against a part fastened to the periphery of the fixed central portion, said frame of said filter holder comprising at its top a window opening and at its bottom the filter. Regulation of light passing through each of the three filters is accomplished by rotating the rotary rings.

Abstract: An integrated automatic device for the simultaneous printing and development of photographs, particularly color photographs, of the type comprising three separate units adjoining each other, namely a first exposure unit A, a second dark-room unit B, a third development unit C. The dark-room unit B is vertical and perpendicularly adjoins the end of the exposure unit A and the development unit C is horizontal and is located below the dark-room unit B and parallel to the exposure unit A.

Abstract: An automatic apparatus for developing photographic or similar films comprising processing tanks arranged in a light impervious compartment in seriatim; an articulated arm pivoted on one end to a base located at the center of the processing tanks and having at its opposite end a member intended to receive the spiral on which the film to be developed is wound; apparatus adapted to impart to said articulated arm angular displacement in order to transfer the spiral from one tank to another and repeated upward and downward movement in order to agitate the spiral in a particular processing tank; and a control programmer for controlling the duration of the movements of the arm.