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COLD FORMING DEVELOPER TUBES

IP.com Disclosure Number: IPCOM000026568D
Original Publication Date: 1992-Oct-31
Included in the Prior Art Database: 2004-Apr-06
Document File: 2 page(s) / 52K

Publishing Venue

Xerox Disclosure Journal

Abstract

In the development of an electrostatic latent image the toner and/or carrier material is transported from a sup ly to the photoreceptor bearing the image. roll such as is commonly used in magnetic brush development. A low cost method for making these tubes is to cold work a blank tube through a set of round rotating dies which have a serration pattern cut into the surface which is generally straight and parallel to the axis of the die. The dies are mounted in a thru-feed or in-feed thread rolling machine and the tube is fed into the dies and passes between the dies cold forming the seriation pattern on the outside of the tube. The correct combination of die angle and set up angle will produce a seriation pattern that is straight and parallel to the longitudinal axis of the tube. This surface finish will effectively transfer toner and carrier materials around the tube.

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XEROX DISCLOSURE JOURNAL

COLD FORMING DEVELOPER Proposed Classification

TUBES U.S. C1.355/251 Timothy R. Jaskowiak
C1. Int. Laurence S. Barker G03g 15/09

In the development of an electrostatic latent image the toner and/or carrier material is transported from a sup ly to the photoreceptor bearing the image.

roll such as is commonly used in magnetic brush development. A low cost method for making these tubes is to cold work a blank tube through a set of round rotating dies which have a serration pattern cut into the surface which is generally straight and parallel to the axis of the die. The dies are mounted in a thru-feed or in-feed thread rolling machine and the tube is fed into the dies and passes between the dies cold forming the seriation pattern on the outside of the tube. The correct combination of die angle and set up angle will produce a seriation pattern that is straight and parallel to the longitudinal axis of the tube. This surface finish will effectively transfer toner and carrier materials around the tube.

One of the most common devices P or this transport is a rotatable cylindrical

XEROX DISCLOSURE JOURNAL - Vo1.17 No. 5 September/October 1992 345

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346 XEROX DISCLOSURE JOURNAL - Vo1.17 No. 5 SeptembedOctober 1992

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