The APT process is a photographic transfer system that can photographically transfer lines or solid blocks of colors onto acetate sheets (cels). A very similar process is used in silk screen printing. The process relies on UV-sensitive inks that cure when exposed to light and stick to the plastic sheet, while the ink in the non-exposed areas are chemically removed from the sheet. Its main advantage is that coloring - normally done via back painting after xerox scanning - can be controlled better and multiple versions made quickly. To put it simply: the drawings are photographed and the negatives then processed onto the cels instead of the typical photography. It also meant that a line on an animated character could be in color instead of just black (although xerography at this point could be done in colors too); this is known as self-colored lines.

This process was used on Disney's animated features such as The Black Cauldron

The Black Cauldron

The Black Cauldron can refer to:* The Black Cauldron , the second novel in The Chronicles of Prydain series* The Black Cauldron , the Disney animated film based on The Chronicles of Prydain book series...

, The Great Mouse Detective

The Great Mouse Detective

The Great Mouse Detective is a 1986 animated feature produced by Walt Disney Feature Animation, originally released to movie theaters on July 2, 1986 by Walt Disney Pictures...

, Oliver & Company

Oliver & Company

Oliver & Company is a 1988 American animated film in which a homeless kitten named Oliver joins a gang of dogs to survive on the 1980s New York City streets. The film was produced by Walt Disney Feature Animation and became the twenty-seventh animated feature released in the Walt Disney Animated...

and The Little Mermaid.

External links

• The APT Process on the AllExperts forum

See also

• The Black Cauldron
  The Black Cauldron
  The Black Cauldron can refer to:* The Black Cauldron , the second novel in The Chronicles of Prydain series* The Black Cauldron , the Disney animated film based on The Chronicles of Prydain book series...
  
  
• Timeline of CGI in film and television
  Timeline of CGI in film and television
  This is a chronological list of films and television programs that have been recognised as being pioneering in their use of computer animation.- 1960s :- 1970s :- 1980s :-1990s:- 2000s :-References:...
  
  
• Traditional animation
  Traditional animation
  Traditional animation, is an animation technique where each frame is drawn by hand...