What does "tripack" mean?

Film that has three emulsions sensitive to red, green, or blue stacked on top of one another.

What is a synonym for "tripack"?

Common synonyms include: backing, cartridge, dope, emulsion, film, frame.

noun

noun ·Rare ·Advanced level

Noun

1
Film that has three emulsions sensitive to red, green, or blue stacked on top of one another. countable, uncountable
"In 1897 du Hauron conceived the idea of using a tripack for recording color photographs."

"In 1897 du Hauron conceived the idea of using a tripack for recording color photographs."

From tri- + pack.