Coating apparatus – Solid applicator contacting work – Pads or absorbent or porous applicators
Patent
1981-02-13
1982-11-30
Hess, Bruce H.
Coating apparatus
Solid applicator contacting work
Pads or absorbent or porous applicators
118264, 282 275, 401196, 427150, 427151, 427152, 4273855, 427391, 427395, 428212, 428218, 4283204, 428537, 428914, B05C 1100, B41M 516
Patent
active
043611087
ABSTRACT:
This invention provides an image-forming and image-transferring sheet comprising a base layer having a first surface and a second surface. The base layer is impregnated with a first image-forming reactant whereas each of the surfaces of the base layer has coated thereon a microporous membrane layer having a gradient in elasticity across the thickness thereof. The more elastic surface of the membrane is in contact with the base layer. The other surface of the membrane is coated with a second image-forming reactant. Upon impact by an image instrument such as a typewriter key, the membrane becomes extended to allow diffusion of the first reactant through the membrane to react with the second image-forming reactant on the surface of an adjacent sheet to form an image on the surface of the adjacent sheet. A method of preparing an image-forming and image-transferring sheet is also provided.
Angleman John D.
Robillard Jean J.
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