Patent ID: 6544395
Filing Date: 2003-04-08
Classification: G01N,Y10T

Abstract:
An apparatus for transferring a fluid from a supply to a substrate comprising:an applicator holder, and at least one applicator tip, connected to the holder, comprising a barrier, wherein the applicator tip retains fluid below the barrier and the barrier controls the amount of fluid deposited on the substrate, and further characterized by at least one of the following (a) through (e); (a) the barrier is selected from the group consisting of a physical barrier, at least one aperture, and a rough surface; (b) the applicator tip has a first portion and a second portion, the first and second portions are made of a material selected from the group consisting of nylon and polyester, and the second portion has a surface which is metalized to retain fluid; (c) the applicator tip has a first portion and a second portion, the first portion is generally lyophobic; (d) the applicator tip has a first portion and a second portion, the second portion is generally lyophilic; (e) the applicator tip has a first portion and a second portion, the second portion has a higher affinity to retain fluid by surface tension than the first portion.