Diazotype developing apparatus with liquid metering assembly

Details Diazotype developing apparatus with liquid metering assembly Diazotype developing apparatus with liquid metering assembly

1974-09-10

1976-02-24

Greiner, Robert P.

Coating apparatus

With means to apply electrical and/or radiant energy to work...

With electromagnetic and/or electrostatic removal of...

118261, 118259, 101366, G03D 506

Patent

active

039407829

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. A sheet of smooth, essentially continuous material is interposed between the screen and the roller surface when the apparatus is not in use and is retracted to enable direct contact between the screen and the roller surface when the apparatus is in use.

REFERENCES:
patent: 3202532 (1965-08-01), Labombarde
patent: 3565035 (1971-02-01), Burgess et al.
patent: 3704662 (1972-12-01), Johnson et al.

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