Incremental printing of symbolic information – Thermal marking apparatus or processes – With transfer medium or driving means therefor
Patent
1993-07-26
1995-09-19
Fuller, Benjamin R.
Incremental printing of symbolic information
Thermal marking apparatus or processes
With transfer medium or driving means therefor
355210, 355245, 430138, B41J 3114
Patent
active
054519861
ABSTRACT:
A thermal transfer type image formation device employs a new regeneration method for reconditioning ink sheets employed in the thermal inking process. The ink sheet has a transparent base layer, which also serves as a dielectric layer, an ink layer and a transparent conductive layer, functioning also as an electrode, on a side of the base layer opposite the ink layer. A fixing device is provided for the transfer of photoconductive powder ink to bare areas of the ink sheet to be rejuvenated. A bias voltage is impressed on the photoconductive powder ink, and the photoconductive powder ink which comes in contact with bare areas becomes conductive when exposed with light through the transparent conductive layer and ink adheres to the base layer due to an established electrostatic force between the ink and the conductive layer electrode on the light exposing side of the ink sheet. After the powder ink has been selectively supplied to the bare areas, the ink sheet is then regenerated by heating the sheet melting and thereafter hardening the powder ink.
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Kurihara Hajime
Mizumoto Teruyuki
Fuller Benjamin R.
Janofsky Eric B.
Le N.
Seiko Epson Corporation
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