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ORGANIC PHOTOCONDUCTOR COATING PROCESS

IP.com Disclosure Number: IPCOM000027194D
Original Publication Date: 1995-Aug-31
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 59K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a process for coating a cylinder comprising placing the cylinder into an empty coating vessel connected at its bottom through flexible conduit to the bottom of a movable first reservoir filled with coating material, the upper surface of the coating material in the coating vessel being initially lower than the lowermost end of the cylinder or coating vessel, raising the first reservoir until sufficient coating material flows from the reservoir into the coating vessel until the area of the cylinder to be coated is covered with the coating material and the coating material overflows out of the coating vessel through a drain port into second reservoir for receiving overflow, and lowering the first reservoir to completely empty the coating reservoir at a speed sufficient to form a predetermined coating thickness. The second reservoir is connected to first reservoir with optional value and filter means for reclaim or recycle of coating material. In an alternative embodiment, a single reservoir is raised and lowered and overflow is handled by an overflow basin or buffer that is integral with the coating vessel. The resulting coated cylinders are useful as photoconductor elements in electrophotographic, and the like applications.

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XEROX DISCLOSURE JOURNAL

ORGANIC PHOTOCONDUCTOR Proposed Classification COATING PROCESS U.S. C1.430/066 William G. Herbert
Int. Gary J. Maier C1. G03g 15/04

Disclosed is a process for coating a cylinder comprising placing the cylinder into an empty coating vessel connected at its bottom through flexible conduit to the bottom of a movable first reservoir filled with coating material, the upper surface of the coating material in the coating vessel being initially lower than the lowermost end of the cylinder or coating vessel, raising the first reservoir until sufficient coating material flows from the reservoir into the coating vessel until the area of the cylinder to be coated is covered with the coating material and the coating material overflows out of the coating vessel through a drain port into second reservoir for receiving overflow, and lowering the first reservoir to completely empty the coating reservoir at a speed sufficient to form a predetermined coating thickness. The second reservoir is connected to first reservoir with optional value and filter means for reclaim or recycle of coating material. In an alternative embodiment, a single reservoir is raised and lowered and overflow is handled by an overflow basin or buffer that is integral with the coating vessel. The resulting coated cylinders are useful as photoconductor elements in electrophotographic, and the like applications.

XEROX DISCLOSURE JOURNAL - VO~. 20, NO. 4 JuIy/August 1995 371

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