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STACKED AIR RING DRYER

IP.com Disclosure Number: IPCOM000027421D
Original Publication Date: 1996-Oct-31
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 62K

Publishing Venue

Xerox Disclosure Journal

Abstract

Proposed is the use of a series of stacked cylindrical plenums or air rings, each containing nozzles of varying designs to impinge heated air directly on the surface of a photoreceptor in manufacture permitting rapid solvent evaporation and higher heat transfer rates. This would allow for rapid drying cycles, reduced cleanroom floor space, and low cost due to smaller ovens/air handling systems.

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XEROX DISCLOSURE JOURNAL

STACKED AIR RING DRYER

Stanley J. Pietrzykowski Kent J. Evans
Robert F. Dunham

Proposed Classification
U. S. C1.430/066 Int. C1. G03g 15/04

Proposed is the use of a series of stacked cylindrical plenums or air rings, each containing nozzles of varying designs to impinge heated air directly on the surface of a photoreceptor in manufacture permitting rapid solvent evaporation and higher heat transfer rates. This would allow for rapid drying cycles, reduced cleanroom floor space, and low cost due to smaller ovens/air handling systems.

Present drying methods use a standard vertical downflow air circulation system. The photoreceptors are located in a chamber where air is introduced from the top and exhausted from the bottom. Drying rates are often slow and uniformity is difficult to maintain.

The proposed system permits rapid solvent evaporation from the photoreceptor by having a series of circular shaped plenums emit a flow of pressurized air through nozzles of varying designs perpendicular to the surface of the substrate. Heated air is impinged directly on the drying surface. Heat is applied only to the surface coating and over a very short distance. Higher air velocities maintain a turbulence that enables rapid solvent removal from the coating into a forced exhaust return plenum located adjacent to the supply nozzle. This rapid displacement results in higher heat transfer rates and quicker drying cycles.

DP5482

XEROX DISCLOSURE JOURNAL - Vo...