Method and apparatus for coating
AssigneeKonishiroku Photo Industry Co., Ltd.
InventorsTetsuya Yoshino, Takashi Kageyama, Kazuo Kato, Takeshi Kishido
Life of this patent
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Abstract
A method and an apparatus in which gas is jetted out of the gas injector 3' to support the support 2 in a contactless manner, while coating solutions are applied onto both sides of the support 2 by means of the coaters 1 and 1'. Supporting static pressure produced in a gap between the support 2 and the injector 3' is made to become 1/10 through 1/1000 of supply pressure of gas fed into the injector 3', and a lift of the support 2 at the contact point with the coating solution from the coater is made to have a value of 20 through 500.mu..
Claims2
In a coating method wherein a coater and a gas injector are disposed in positions substantially opposite to each other on both sides of a support running continuously, and gas is jetted from said gas injector toward said support to coat it by said coater while supporting said support in a contactless manner, the improvement in that supply pressure of gas fed into said injector, a pressure loss in the inside of said injector and a tensile force applied to said support are set prior to coating so that supporting static pressure produced in a gap between said support and said injector becomes 1/10 through 1/1000 of the supply pressure, and a lift at the contact point with a coating solution from said coater has a value of 20 through 500.mu..
In a coating apparatus wherein a coater and a gas injector are disposed in positions substantially opposite to each other on both sides of a support running continuously, and gas is jetted from said gas injector toward said support to coat it by said coater while supporting said support in a contactless manner, the improvement in that are included a regulator for supply pressure of gas fed into said injector and a regulator for a tensile force applied to said support which can make it possible that supporting static pressure produced in a gap between said support and said injector becomes 1/10 through 1/1000 of the supply pressure, and a lift at the contact point with a coating solution from said coater has a value of 20 through 500.mu..
Dependencies are inferred from the claim text.