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"HOOP" DESIGN COMPLIANT ROLL

IP.com Disclosure Number: IPCOM000025620D
Original Publication Date: 1986-Oct-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 94K

Publishing Venue

Xerox Disclosure Journal

Abstract

One type of single component developer development system for electrostatographic reproducing apparatus has a developer roll loaded with a monolayer of toner by forming a nip between the developer roll and a chargmghetering roll.

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XEROX DISCLOSURE JOURNAL

"HOOP" DESIGN COMPLIANT ROLL Laurence S. Barker U.S. C1.355/3DD James R. Kolbe
David G. Southern

Proposed Classification

Int. Cl. G03g 15/00

Volume 11 Number 5 Septernber/October 1986 233

[This page contains 1 picture or other non-text object]

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"HOOP" DESIGN COMPLIANT ROLL (Cont'd)

One type of single component developer development system for electrostatographic reproducing apparatus has a developer roll loaded with a monolayer of toner by forming a nip between the developer roll and a chargmghetering roll.

To form the monolayer of toner the charging/metering roller must be compliant in the radial of direction along its length and must have very little variation in force deflection characteristics around its circumferenine It should also be conductive rn order to attract and withdraw wrong sign toner from the metering nip formed by the compliant roll being forced against the ri@d donor roll. Any gaps formed between the meteringkharging roll and the riDd developer roll would allow uneven toner mass and charge distribution through the nip resulting in poor copy quality Typically these compliant rolls are manufactured from a thin wall electroform nickel sleeve shaft subassembly However, with this design the roll surface tends to run out with respect to the shaft ultimately requiring excessive drive torque to maintain the minimum nip force. The Figures illustrate an alternative mounting arrangement in which the thin wall electrofor...