double transfer

1 definition found

double transfer - Collaborative International Dictionary of English v.0.48 :

  Carbon process \Car"bon process\ (Photog.)
     A printing process depending on the effect of light on
     bichromatized gelatin. Paper coated with a mixture of the
     gelatin and a pigment is called
  
     carbon paper or
  
     carbon tissue. This is exposed under a negative and the
        film is transferred from the paper to some other support
        and developed by washing (the unexposed portions being
        dissolved away). If the process stops here it is called
        single transfer; if the image is afterward transferred
        in order to give an unreversed print, the method is called
        double transfer.
        [Webster 1913 Suppl.]