Double side coating method
AssigneeFuji Photo Film Co., Ltd.
InventorToru Yoshida
Life of this patent
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Abstract
A double side coating method in which immediately after a first coating is carried out for the first side of a web, the first side of the web is supported in a non-contact manner, and a second coating is carried out for the second side of the web. Immediately before the second coating is carried out, the second side of the web is charged in unipolarity by corona discharges induced by a high voltage generating unit with an electrode.
Claims4
A double side coating method for coating a web having a first side and a second side opposite to said first side with a first and a second solution, respectively, comprising the steps of:
- coating said first side of the web with said first solution, said first solution being electronically conductive;
- cooling said first side of said web after said first side is coated with said first solution;
- coating said second side of the web with said second solution while supporting said first side in a non-contact manner after said coating of said first side;
- and
- effecting unipolarity charge to said second side by corona discharges induced by a high voltage electrode immediately before said coating of said second side.
A double side coating method for coating a web having a first side and a second side opposite to said first side with a first and second solution, respectively, comprising the steps of:
- coating said first side of the web with said first solution, said first solution being electrically conductive;
- coating said second side of the web with said second solution while supporting said first side in a non-contact manner after said coating of said first side;
- and
- effecting unipolarity charge to said second side by corona discharges induced by a high voltage electrode immediately before said coating of said second side.
Dependencies are inferred from the claim text.