Roll construction for coating apparatus

Details Roll construction for coating apparatus Roll construction for coating apparatus

B - Operations, Transporting

05

C

32/53

B05C 3/12 (2006.01) B05C 9/02 (2006.01) G03F 7/16 (2006.01)

Patent

CA 1090119

ABSTRACT OF THE DISCLOSURE Apparatus for applying a coating of, for example, photographically sensitive liquid on one side of a moving web of, for example, aluminum is constructed with a backing or support roller having stepped portions at each end of an unstepped central portion. The latter is engaged with the anterior surface of the web and is narrower than the web so that coating liquid applied to one surface of the web does not migrate to the edges of the web to contaminate the anterior side thereof. The width of the central portion is great enough so that mechanical stress on the web is not excessive and the undercut height is sufficient to exceed deflection of the web at the edges thereof.

272625

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