Roll construction for coating apparatus

Details Roll construction for coating apparatus Roll construction for coating apparatus

1976-03-15

1977-08-23

Kee Chi, James

Coating apparatus

Immersion or work-confined pool type

Running length work, longitudinally traveling

118401, 118DIG2, 29123, B05C 312

Patent

active

040432963

ABSTRACT:
Apparatus for applying a coating of photographically sensitive liquid on one side of a moving aluminum web 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.

REFERENCES:
patent: 1555389 (1925-09-01), Stevens
patent: 1794896 (1931-03-01), Hauck
patent: 1981437 (1934-11-01), Slack
patent: 2592581 (1952-04-01), Lorig
patent: 2775954 (1957-01-01), White et al.
patent: 3335026 (1967-08-01), De Geest et al.
patent: 3429741 (1969-02-01), Moriarty
patent: 3526536 (1970-09-01), Spengos et al.

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