Method for increasing hydrophilicity of transparencies used as r

Details Method for increasing hydrophilicity of transparencies used as r Method for increasing hydrophilicity of transparencies used as r

1996-07-01

1998-07-14

Pianalto, Bernard

Coating processes

Direct application of electrical, magnetic, wave, or...

Polymerization of coating utilizing direct application of...

427197, 427322, 427536, 427539, 427558, 427570, 427595, C08F 248

Patent

active

057801185

ABSTRACT:
A transparency for ink jet printing is enhanced for use as an ink jet recording medium by increasing the hydrophilicity of the coating formed on a transparent substrate. In one embodiment, the coating is subjected to a corona plasma discharge exposure to create changes in oxygen functionality at the coating surface resulting in increases in surface hydrophilicity. In another embodiment, the surface is exposed with UV radiation and ozone exposure for controlled periods of time. In both cases, the surface hydrophilicity is increased by generating highly reactive free radical oxygen (O.sup.-) which results primarily in increases in the oxygen functional groups C.dbd.O and COO.sup.-.

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Dr. N. Stewart McIntyre and Mary Jane Walzak, "New UV/Ozone Treatment Improves Adhesiveness of Polymer Surfaces," Modern Plastics, Mar. 1996, pp. 79-81.

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