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Browse Prior Art Database

Spring Loaded Seal

IP.com Disclosure Number: IPCOM000081766D
Original Publication Date: 1974-Aug-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Freeman, WD: AUTHOR [+3]

Abstract

A spring loaded seal is employed in the developer unit of an electrophotographic copying machine and is maintained closely adjacent to but spaced from a photoconductor drum.

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Spring Loaded Seal

A spring loaded seal is employed in the developer unit of an electrophotographic copying machine and is maintained closely adjacent to but spaced from a photoconductor drum.

Photoconductor drum 11 containing a toned image thereon is rotated in the direction of arrow 13 past seal 15. Seal 15 must be maintained closely adjacent the photoconductor drum 11 so that it does not disturb the toned image thereon, but does act to prevent larger carrier beads which may adhere to the drum surface from advancing therepast.

Seal 15 is mounted to bracket 17 having followers 19 affixed thereto at either edge of the photoconductor drum 11. Leaf spring 21 biases the followers 19 against the drum 11 and the bracket 17 rests on a piece of TEFLON* felt 23, which allows easy motion of the bracket thereover and provides a seal under the seal 15.

The spring loaded seal 15 follows the contour of the drum 11, thereby maintaining a constant close spacing between the seal and the drum, and further prevents the seal 15 from being damaged when the top surface of the developer unit 25 is lowered into position adjacent the drum 11. * Trademark of E. I. du Pont de Nemours & Co.

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