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AUTOMATED CRUCIBLE LOADING SYSTEM FOR ALLOY PHOTORECEPTOR PELLETS

IP.com Disclosure Number: IPCOM000026284D
Original Publication Date: 1991-Feb-28
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 63K

Publishing Venue

Xerox Disclosure Journal

Abstract

An automated crucible loading system for alloy pellets in photoreceptor manufacture is disclosed. An empty container is robotically placed onto a weighing station where it is tared. Alloy pellets are fed into the container until a preset weight is obtained. The pellet feed is stopped, and the container is removed and sealed. A second empty container is placed onto the weighing station and the above process is repeated. The sealed container may be sent directly to a coating station for evaporative deposition or the container may be sent to storage for future use. The container may be a plastic bag having an aluminized exterior or a glass bottle. The plastic bags may be either vacuum heat sealed or closed with a pressed seal. The bags may be aluminized to prevent light from contacting selenium contained in the pellets. The loading system may be either a hopper or a feed belt. An alternative bag loading method comprises discrete counting of individual pellets instead of weighing the pellets with a photosensor. When a specified count is achieved, the filled container is automatically removed and sealed. The loading system provides for reduced variability in the coating composition and film thickness of finished photoreceptors.

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XEROX DISCLOSURE JOURNAL

AUTOMATED CRUCIBLE Proposed Classification LOADING SYSTEM FOR ALLOY PHOTORECEPTOR PELLETS Int. C1. GOln 01/10 Roger W. LaForce
Thomas P. Debies

U.S. C1. 355/246

An automated crucible loading system for alloy pellets in photoreceptor manufacture is disclosed. An empty container is robotically placed onto a weighing station where it is tared. Alloy pellets are fed into the container until a preset weight is obtained. The pellet feed is stopped, and the container is removed and sealed. A second empty container is placed onto the weighing station and the above process is repeated. The sealed container may be sent directly to a coating station for evaporative deposition or the container may be sent to storage for future use. The container may be a plastic bag having an aluminized exterior or a glass bottle. The plastic bags may be either vacuum heat sealed or closed with a pressed seal. The bags may be aluminized to prevent light from contacting selenium contained in the pellets. The loading system may be either a hopper or a feed belt. An alternative bag loading method comprises discrete counting of individual pellets instead of weighing the pellets with a photosensor. When a specified count is achieved, the filled container is automatically removed and sealed. The loading system provides for reduced variability in the coating composition and film thickness of finished photoreceptors.

XEROX DISCLOSURE JOURNAL - VoI. 16, No. 1 January/February...