Apparatus for the manufacture of a series of photoconductor webs

Details Apparatus for the manufacture of a series of photoconductor webs Apparatus for the manufacture of a series of photoconductor webs

1976-05-25

1977-09-27

Rimrodt, Louis K.

Coating apparatus

Immersion or work-confined pool type

Work-confined pool

G03G 504, B05C 302, B05C 502

Patent

active

040504107

ABSTRACT:
Disclosed is a process for the manufacture of a series of photoconductor webs spaced apart from each other on a carrier web by electrically conductive spacing strips extending transversely of the carrier web, comprising (a) transporting a carrier web having an electrically conductive surface disposed thereon in a feed direction across a backing member and in close proximity to a slot die arranged transversely to the feed direction; (b) pumping a photoconductive coating solution into the slot die; (c) flowing the photoconductive solution intermittently from the slot die orifice onto the carrier web for periods of time sufficient to produce the spaced photoconductor webs, the flow of the coating solution being substantially uniform during each coating period and the entire quantity of coating solution required for each coated photoconductor web being extruded from the slot die orifice in the form of a substantially uniform stream; (d) maintaining the distance between the carrier web and the die orifice constant and so small that the coating solution issuing from the die orifice forms a bridge between the orifice of the slot die and the carrier; and (e) drying the coated material. Also disclosed is an apparatus for carrying out the foregoing process.

REFERENCES:
patent: 2878522 (1959-03-01), Locke
patent: 2933061 (1960-04-01), Galer
patent: 3890926 (1975-06-01), Teed

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