Self-registering fluid droplet transfer methods
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United States of America Patent
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Nov 18, 2003
Issued Date -
N/A
app pub date -
Aug 5, 2002
filing date -
Aug 3, 2000
priority date (Note) -
Expired
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Abstract
A method for the image-wise transfer of fluid droplets from at least one fluid droplet source onto a substrate comprises ejecting fluid droplets from the at least one fluid droplet source onto a transfer surface. The fluid droplets may be water-based or oil based. The transfer surface repels the fluid droplets. For water-based fluid droplets, the transfer surface comprises a spatially periodic arrangement of less-strongly hydrophobic regions and more-strongly hydrophobic regions. The method includes adjusting a spatial registration of the fluid droplets on the transfer surface; and transferring the fluid droplets from the transfer surface to the substrate by bringing the fluid droplets on the transfer surface into contact with the substrate.
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