Curtain coater for photographic elements

Details Curtain coater for photographic elements Curtain coater for photographic elements

1991-01-22

1993-01-26

Jones, W. Gary

Coating apparatus

Projection or spray type

Flexible web or strand work

118DIG4, B05C 500

Patent

active

051819635

ABSTRACT:
Curtain coater for coating a layer of liquid photograph coating composition on a continuous web, which comprises a coating hopper (10), a roller (18) for supporting the web while moving past the coating hopper to receive a layer (16) of coating composition produced by the hopper and, arranged closely to and slightly upstream of the coating locus of the curtain on the web, an elongated brush arrangement (24) extending across the web, the bristles of which are flexible and in resilient contact with the web surface. The brush arrangement functions to reduce the effect of air carried along by the moving web on the liquid curtain in conjunction with an upstream air shield in the form of an arcuately curved plate coaxial with the supporting roller and spaced closely from the web surface.

REFERENCES:
patent: 3369522 (1968-02-01), Alix
patent: 3867901 (1975-02-01), Greiller

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