Diazotype developing apparatus with improved liquid metering ass

Details Diazotype developing apparatus with improved liquid metering ass Diazotype developing apparatus with improved liquid metering ass

1978-01-18

1979-03-06

Hix, L. T.

354324, G03D 506

Patent

active

041427904

ABSTRACT:
Apparatus for developing exposed diazotype sheet material in which an accurately metered amount of liquid developer is applied to the sheet material by an applicator roller. The roller surface is essentially smooth and liquid developer is applied to the roller surface in an amount metered by a metering blade assembly which includes a flexible support member carrying a resilient backing layer which, in turn, carries a fine mesh screen held in contact with the smooth surface of the roller. The screen includes intersecting filaments and opposed, flattened lands on opposite surfaces of the screen and located at intersections of the filaments, the screen having a predetermined thickness between opposed flattened lands.

REFERENCES:
patent: 3037451 (1962-06-01), Davis
patent: 3626833 (1971-12-01), Koch
patent: 3687049 (1972-08-01), Koch et al.
patent: 3875581 (1975-04-01), Yamashita et al.
patent: 3940782 (1976-02-01), Neeb et al.
patent: 4048919 (1977-09-01), Woods

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