Reusable projection transparency

Details Reusable projection transparency Reusable projection transparency

1982-03-15

1983-12-27

Hess, Bruce H.

Stock material or miscellaneous articles

Composite

282 275, 427151, 428913, B41M 518

Patent

active

044231164

ABSTRACT:
A thermally-responsive transparent film is disclosed which comprises certain chromogenic material and certain color developer material. With this film marks are developed in response to the application 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 particular utility as a reusable projection transparency.

REFERENCES:
patent: 4025090 (1977-05-01), Petitpierre
patent: 4028118 (1977-06-01), Nakasuji et al.

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