C-print, colour coupler, och collotype

C-print

http://en.wikipedia.org/wiki/Type_C_print  

Color coupler, colour coupler

"C" print or color coupler print: Negative to positive printing process. A print that is made when photosensitive paper is exposed to light that passes through a negative film.

http://en.mimi.hu/photography/color_coupler.html  

Collotype

A photographic printing process in which a glass plate whose surface has been coated with gelatin carries the image to be reproduced
http://www.gallerybrown.com/art-terms.aspx