Reusable projection transparency

Details Reusable projection transparency Reusable projection transparency

B - Operations, Transporting

41

M

42/3

B41M 5/30 (2006.01)

Patent

CA 1241835

Abstract of the Disclosure A thermally-responsive transparent film is disclosed which com- prises certain chromogenic material and certain color developer material. With this film marks are developed in response to the appli- cation of heat to form an image. These images can be erased by the action of certain liquids or vapors. The imaged and erased states are fixed under a range of environmental conditions. This film finds par- ticular utility as a reusable projection transparency.

421686

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