Browse Prior Art Database

COPIER SINGLE CARTRIDGE UNIT WITH RETAINED DEVELOPER MAGNETS

IP.com Disclosure Number: IPCOM000025946D
Original Publication Date: 1989-Apr-30
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 68K

Publishing Venue

Xerox Disclosure Journal

Abstract

Some current and proposed cartridges (removable processor modules) for copiers include and throw away the entire developer unit as part of the cartridge unit. However, a developer unit typically includes expensive magnets inside the actual rotating non-magnetic developer roller sleeve which is exposed to and transports the developer material. - It is proposed that the developer magnets be cantilever mounted at one end to the frame of the copier and not be a part of or removed with the cartridge unit, while the sleeve and the rest of the developer unit and material are. As the subject cartridge unit is installed the developer sleeve would slide in over the magnet unit. The magnet unit could be mounted to the frame of the copier with a flexible mounting allowing some transaxial movement to allow it to self-align axially within the developer sleeve to reduce cartridge alignment criticality .

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XEROX DISCLOSURE JOURNAL

COPIER SINGLE CARTRIDGE UNIT WITH RETAINED DEVELOPER U.S. c1.35513 MAGNETS Int. C1. G03g 15/00 Paul F. Morgan

Proposed Classification

   Some current and proposed cartridges (removable processor modules) for copiers include and throw away the entire developer unit as part of the cartridge unit. However, a developer unit typically includes expensive magnets inside the actual rotating non-magnetic developer roller sleeve which is exposed to and transports the developer material.
- It is proposed that the developer magnets be cantilever mounted at one end to the frame of the copier and not be a part of or removed with the cartridge unit, while the sleeve and the rest of the developer unit and material are. As the subject cartridge unit is installed the developer sleeve would slide in over the magnet unit. The magnet unit could be mounted to the frame of the copier with a flexible mounting allowing some transaxial movement to allow it to self-align axially within the developer sleeve to reduce cartridge alignment criticality .

Thus a single and "white glove" cartridge installation and removal is provided, since the ends of the developer sleeve make toner seals within the cartridge. Yet this single cartridge system would not requiring the expense and weight (and consequent transportation costs) of a new set of magnets in each cartridge unit, and allows the copier to use a permanent set of better quality magnets of more expensive magnetic material...