Method and apparatus for dip coating a hollow cylindrical body

Details Method and apparatus for dip coating a hollow cylindrical body Method and apparatus for dip coating a hollow cylindrical body

1991-07-02

1993-02-09

Beck, Shrive

Coating processes

Immersion or partial immersion

118406, 118425, 118504, B05D 118, B05C 302, B05C 1111

Patent

active

051851873

ABSTRACT:
The present invention provides an apparatus and a method for forming a uniform and smooth coating film on a surface of a cylindrical body, for example, for production of an electrophotographic photosensitive body. The apparatus of the present invention includes a float having a space portion formed in the inside thereof for floatation in the liquid surface of the paint. The float is specifically formed so that even in the case where the paint contains a solvent that gradually evaporates, no bubbles are generated from a lower portion of a hollow cylindrical body during the coating step, because the pressure rising inside the hollow cylindrical body is moderated by the space portion of the float.

REFERENCES:
patent: 1217071 (1917-02-01), Rust
patent: 2739911 (1956-03-01), Andriulis et al.
patent: 4620996 (1986-11-01), Yashiki
english abstract for Japanese Abstract 59-142869 to Yuuichi Yashiki, Aug. 1984.

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