Image transfer method for one way vision display panel

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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Details

156230, 156235, 156277, 156249, 40615, 40591, B44C 302

Patent

active

055251773

ABSTRACT:
A method of producing an image onto a surface of a one-way vision display panel of the type which is constructed as a perforated membrane having an opaque light-reflective surface and a light-absorbing surface and whereby the image is clearly visible when viewing the display panel from one direction and wherein the perforated membrane permits substantially unobstructed through-viewing when viewing the display panel from a second, opposite direction. The method substantially eliminates the corona effect of the image while viewing the display panel in the through-viewing direction, the corona effect being the result of stray ink which has traveled from the image layer into the through-holes of the perforated membrane during the image printing process. The method includes the steps of: electrostatically transferring ink onto a transfer medium as a reverse image for temporarily holding the reverse image for later transfer to a surface of a perforated membrane; and transferring the reverse image from the transfer medium using heat and/or pressure in order to form a desired correctly oriented image onto only the solid bar portions of a surface of a perforated membrane without any substantial image transfer into or through the through-holes of the perforated membrane such that the correctly oriented image is substantially undetectable when looking at the one-way vision display panel in the second, opposite through-viewing direction.

REFERENCES:
patent: 3451877 (1969-06-01), Herschman
patent: 3853675 (1974-12-01), Edwards
patent: 4070781 (1978-01-01), Saver
patent: 4358488 (1982-11-01), Dunklin et al.
patent: 4440590 (1984-04-01), Collins et al.
patent: 4673609 (1987-06-01), Hill
patent: 4940622 (1990-07-01), Leavitt, Sr.

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