Browse Prior Art Database

TONER ANTI-BRIDGING DEVICE

IP.com Disclosure Number: IPCOM000026050D
Original Publication Date: 1989-Dec-31
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 57K

Publishing Venue

Xerox Disclosure Journal

Abstract

The bridging of toner across the entrance to a toner dispense auger is prevented, or toner bridges are broken up, by imparting a low-frequency vibration to the toner dump end of a removable toner cartridge,

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EROX DISCLOSURE JOURNAL

TONER ANTI-BRIDGING DEVICE Proposed Classification
D. Godamunne U.S. C1.355/245 Int. C1. G03g 15/06

Volume 14 Number 6 November/December 1989 303

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TONER ANTI-BRIDGING DEVICE (Cont'd)

The bridging of toner across the entrance to a toner dispense auger is prevented, or toner bridges are broken up, by imparting a low-frequency vibration to the toner dump end of a removable toner cartridge,

As shown in the drawing, the vibrations are induced by means of a metal arm 2 attached to the cartridge housing 4. When the cartridge has been fully inserted into the copier, the free end of arm 2 projects into the path of gear teeth or lobes on an auger drive gear. As this rotates to dispense toner, the arm is impacted by the teeth, setting up vibrations at about 10Hz. These vibrations imparted to the toner container reduce compaction of the toner, and cause any toner bridges to collapse, leading to an even flow of fresh toner into the auger.

This invention provides a low-cost solution to a real problem, avoiding the need for solenoid-driven mechanical thumpers, which are an alternative form of anti-bridging device.

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     XEROX DISCLOSURE JOURNAL Volume 14 Number 6 November/December 1989

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