Incremental printing of symbolic information – Thermal marking apparatus or processes – Pre or post image recording treatment
Patent
1996-07-29
2000-02-29
Tran, Huan
Incremental printing of symbolic information
Thermal marking apparatus or processes
Pre or post image recording treatment
B41J 2325
Patent
active
060315563
ABSTRACT:
A process of forming a single color image which has improved abrasion resistance comprising:
a) providing a thermal donor element comprising a heat-activatable image layer of a dye or pigment on a support, the image dye or pigment absorbing in the region of from about 300 to about 700 mn;
b) providing a receiving element in superposed relationship with the thermal donor element;
c) imagewise-exposing the thermal donor element by means of a laser or thermal head, thereby causing a change in the adhesion of at least a portion of the exposed areas of the heat-activatable layer to the receiving element or causing a portion of the exposed areas of the heat-activatable layer to diffuse into the receiver element;
d) separating the thermal donor element from the receiver element, thus creating an image layer on either or both of the elements;
e) charging either the thermal donor element or the receiver element containing the image layer to a given polarity or applying a voltage across the surface of the element which is attracted to a conductive surface behind the element;
f) applying colorless, charged particles to the element containing the image layer which causes them to be electrostatically attracted to the surface of the image layer; and
g) heat-fusing the particles to obtain a protective overcoat over the entire surface of the image layer.
REFERENCES:
patent: 5017547 (1991-05-01), DeBoer
patent: 5045888 (1991-09-01), Imaeda
patent: 5339146 (1994-08-01), Aslam et al.
patent: 5529884 (1996-06-01), Tutt et al.
Burberry Mitchell Stewart
DePalma Vito A
Goebel William Keith
Tunney Scott Eric
Tutt Lee William
Cole Harold E.
Eastman Kodak Company
Tran Huan
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