Patents Assigned to Zelacolor Systems Establishment
  • Patent number: 4342510
    Abstract: An apparatus for making photographic pictures is disclosed comprising a housing provided with an objective; a magazine or cassette containing a film feed mechanism; and a device for positioning at least one mask in the light rays in the interior of the apparatus between the objective and the film and adjacent to the film plane.The apparatus is useful to effect masking operations during the normal photographic operations of imaging.
    Type: Grant
    Filed: October 31, 1980
    Date of Patent: August 3, 1982
    Assignee: Zelacolor Systems Establishment
    Inventor: Emile A. H. Guillaume
  • Patent number: 4272172
    Abstract: An apparatus for making photographic pictures is disclosed comprising a housing provided with an objective; a magazine or cassette containing a film feed mechanism; and a device for positioning at least one mask in the light rays in the interior of the apparatus between the objective and the film and adjacent to the film plane.The apparatus is useful to effect masking operations during the normal photographic operations of imaging.
    Type: Grant
    Filed: April 2, 1979
    Date of Patent: June 9, 1981
    Assignee: Zelacolor Systems Establishment
    Inventor: Emile A. H. Guillaume
  • Patent number: 4241993
    Abstract: The original mount which will be used in photographic devices for making reproduction, enlarged or screened images or separations, comprises two frames each being provided at their central portions with an exposure window, both windows being superimposed when both frames are superimposed, and arranged for clamping between their edges the transparent original. One of the frames is provided with means for removably fixing of the frame on a support of said photographic device. The fixing means allow a precise and rapid positioning of the frame and mount on the support by spring biassed fittings which fix and hold the mount by abutment in the three directions of the space.
    Type: Grant
    Filed: April 2, 1979
    Date of Patent: December 30, 1980
    Assignee: Zelacolor Systems Establishment
    Inventor: Emile A. H. Guillaume
  • Patent number: 4194834
    Abstract: A compact optical bench type unit for making selected color-component records of color transparencies for use in color printing comprises a light source with a rotary filter disc for directing a beam of selectively colored light through a light condenser which converges the beam through a color diapositive to be reproduced and into the objective of a camera. The condenser, possibly formed of Fresnel lenses, is of large dimensions to accomodate large diapositives, and the camera objective has a relatively short focal length. Chromatic aberration of the condenser is corrected by moving the light source in correspondence with rotation of the filter disc, or by selectively inserting correcting lenses in the beam.
    Type: Grant
    Filed: June 29, 1978
    Date of Patent: March 25, 1980
    Assignee: Zelacolor Systems Establishment
    Inventor: Emile A. H. Guillaume
  • Patent number: 4189229
    Abstract: The invention relates to an enlarger, especially for the production of photographic enlargements or precision screens. The enlarger comprises a head enclosing a light source and a diffusing screen, the light source being disposed behind the diffusing screen, a film slide channel having an exposing opening or window, and an enlarging lens. The light source has the form of an annulus located close to the diffusing screen and arranged such that the diffusing screen or plate surface, seen from the lens, is contained effectively within a projections area being orthogonal to the light source annulus. The light source can be lifted and lowered within the head in order to adjust for substantially uniform light intensity in the projected surface.
    Type: Grant
    Filed: March 6, 1978
    Date of Patent: February 19, 1980
    Assignee: Zelacolor Systems Establishment
    Inventor: Emile A. H. Guillaume
  • Patent number: 4110036
    Abstract: A compact optical bench type unit for making selected color-component records of color transparencies for use in color printing comprises a light source with a rotary filter disc for directing a beam of selectively colored light through a light condenser which converges the beam through a color diapositive to be reproduced and into the objective of a camera. The condenser, possibly formed of Fresnel lenses, is of large dimensions to accommodate large diapositives, and the camera objective has a relatively short focal length. Chromatic aberration of the condenser is corrected by moving the light source in correspondence with rotation of the filter disc, or by selectively inserting correcting lenses in the beam.
    Type: Grant
    Filed: December 1, 1976
    Date of Patent: August 29, 1978
    Assignee: Zelacolor Systems Establishment
    Inventor: Emile A. H. Guillaume
  • Patent number: 3984849
    Abstract: An apparatus is disclosed for recording color separations on a photographic film band. The apparatus comprises a feed mechanism having a film transport member arranged to selectively bring portions of the unexposed film from a feed spool mounted in a housing into an operative position for exposure in a camera adapted to receive selective filters for color separation. The feed mechanism is arranged to unreel the unexposed film band under constant tension from the feed spool and to displace selected film portions in contact with a support surface whereby to selectively bring these film portions into their operative position for exposure in the camera and return them to said housing after exposure.
    Type: Grant
    Filed: August 27, 1974
    Date of Patent: October 5, 1976
    Assignee: Zelacolor Systems Establishment
    Inventor: Emile Armand Henri Guillaume
  • Patent number: RE31918
    Abstract: An apparatus is disclosed for recording color separations on a photographic film band. The apparatus comprises a feed mechanism having a film transport member arranged to selectively bring portions of the unexposed film from a feed spool mounted in a housing into an operative position for exposure in a camera adapted to receive selective filters for color separation. The feed mechanism is arranged to unreel the unexposed film band under constant tension from the feed spool and to displace selected film portions in contact with a support surface whereby to selectively bring these film portions into their operative position for exposure in the camera and return them to said housing after exposure.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: June 18, 1985
    Assignee: Zelacolor Systems Establishment
    Inventor: Emile A. H. Guillaume