Apparatus and method for bar coating
AssigneeFUJIFILM Corporation
InventorsWataru MAJIMA, Nobuo HAMAMOTO
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Abstract
In a bar coating apparatus which applies a coating liquid to a continuously running web using a columnar bar which rotates by being supported by a bar receiving member, the bar to be used is determined based on D*, where A is a deflection value of a difference between a maximum value and minimum value of roundness of the bar, B is a value obtained by a second-order approximation of A in a width direction X of the bar, T (=A−B) is a value obtained by subtracting B from A, and D* is an average inclination which is an average of a bar width of an absolute value |dT/dX| of a differential value of T in the width direction X of the bar.
Claims3
A bar coating apparatus which applies a coating liquid to a continuously running web using a columnar bar which rotates by being supported by a bar receiving member, wherein, p1 said bar satisfies D*≦135×10−6 where A is a deflection value of a difference between a maximum value and minimum value of roundness of the bar, B is a value obtained by a second-order approximation of A in a width direction X of the bar, T (=A−B) is a value obtained by subtracting B from A, and D* is an average inclination which is an average of a bar width of an absolute value |dT/dX| of a differential value of T in the width direction X of the bar.
A bar coating method of applying a coating liquid to a continuously running web using a columnar bar which rotates by being supported by a bar receiving member, wherein,
- the bar satisfies D*≦135×10−6 where A is a deflection value of a difference between a maximum value and minimum value of roundness of the bar, B is a value obtained by a second-order approximation of A in a width direction X of the bar, T (=A−B) is a value obtained by subtracting B from A, and D* is an average inclination which is an average of a bar width of an absolute value |dT/dX| of a differential value of T in the width direction X of the bar.
Dependencies are inferred from the claim text.