Light-transmissive substrates coated to promote adhesion of phas

Details Light-transmissive substrates coated to promote adhesion of phas Light-transmissive substrates coated to promote adhesion of phas

1991-01-17

1992-05-05

Cannon, James C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

3461351, 428207, 428412, 4284744, 4284752, 4284769, 428480, 428532, 428913, B32B 712, B32B 3300, B32B 3500

Patent

active

051106655

ABSTRACT:
A method for producing a light-transmissive printed substrate is provided. The substrate is printed with a predetermined pattern of a light-transmissive phase change ink which initially transmits light in a non-rectilinear path. When the pattern of solidified phase change ink is subsequently reoriented to form an ink layer of substantially uniform thickness, a printed image layer is formed which will transmit light in a substantially rectilinear path and is suitable for overhead projection.
In some instances the adhesion between the ink image layer and the substrate is not as high as is desired. This problem can result in delamination of the ink from the film under certain conditions. In order to overcome this problem, an intermediate optically clear adhesion promoting layer is introduced between the light-transmissive phase change ink and the base substrate. Thus, a substrate has been developed which maintains the high level of light transmissivity in the ink and substrate, while preventing adhesion failure in the area between the printed image and the base substrate.

REFERENCES:
patent: 4801473 (1989-01-01), Creagh et al.
patent: 4873134 (1989-10-01), Fulton et al.
patent: 4889761 (1989-12-01), Titterington et al.
patent: 4992304 (1991-02-01), Titterington

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