Browse Prior Art Database

CROSSMIXING SYSTEM

IP.com Disclosure Number: IPCOM000024691D
Original Publication Date: 1981-Oct-31
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 102K

Publishing Venue

Xerox Disclosure Journal

Abstract

As shown in Figure 1, the development system includes a cylindrical member having a plurality of vanes extending outwardly therefrom, indicated generally by the reference numeral 10. Cylindrical member 10 advances developer material in an upwardly direction to a first developer roller 12. Developer roller 12 includes a stationary elongated magnet having a tubular member disposed thereabout. As the tubular member rotates, developer material is attracted from cylindrical member 10 thereto and advanced in an upwardly direction thereon. Blade 14 splits the developer material into two paths. One path continues to advance with developer roller 12 into contact with the photoconductive surface to develop the electro-static latent image recorded on photoconductive drum 16. The other portion of the developer material is advanced to a second developer roller 18. Developer roller 18 is identical to developer roller 12 and transports the developer material into contact with the latent image recorded on photoconductive drum 16. Developer rollers 12 and 18 rotate in opposite directions. Thus, the tangential velocity of developer roller 12 in the development zone is in the same direction as that of photoconductive drum 16 with that of developer roller 18 being in the opposite direction. The unused developer material is advanced from developer roller 18 into crossmixer 20. Crossmixer 20 intermingles the developer material so as to maintain the desired triboelectric characteristics thereof. The developer material cascades in a downwardly direction from developer roller 18 through crossmixer 20 onto cylindrical member 10. Alternate vanes are spaced from one another by slots in the surface of the cylinder of member 10. These slots permit the developer material to descend to the interior thereof. A crossmixer 22 is positioned in the interior of member 10 and rotates therewith.

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

CROSSMIXING SYSTEM Richard Forbes

Proposed Classification
U.S. Cl. 118/644 Int. Cl. B05b 5/02

I8

FIG. I

26

W W W

FIG. 2

Volume 6 Number 5 September/October 1981 225

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

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CROSSMIXING SYSTEM (Cont'd)

As shown in Figure 1, the development system includes a cylindrical member having a plurality of vanes extending outwardly therefrom, indicated generally by the reference numeral 10. Cylindrical member 10 advances developer material in an upwardly direction to a first developer roller 12. Developer roller 12 includes a stationary elongated magnet having a tubular member disposed thereabout. As the tubular member rotates, developer material is attracted from cylindrical member 10 thereto and advanced in an upwardly direction thereon. Blade 14 splits the developer material into two paths. One path continues to advance with developer roller 12 into contact with the photoconductive surface to develop the electro- static latent image recorded on photoconductive drum 16. The other portion of the developer material is advanced to a second developer roller 18. Developer roller 18 is identical to developer roller 12 and transports the developer material into contact with the latent image recorded on photoconductive drum 16. Developer rollers 12 and 18 rotate in opposite directions. Thus, the tangential velocity of developer roller 12 in the development zone is in the same direction as that of photoconductive drum 16 with tha...