Browse Prior Art Database

LOW TONER SENSOR

IP.com Disclosure Number: IPCOM000025415D
Original Publication Date: 1985-Apr-30
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 87K

Publishing Venue

Xerox Disclosure Journal

Abstract

Low toner sensors for use in electrophotographic copiers are known to those skilled in the art. This disclosure relates to a low toner sensor. In the toner sump of a development assembly (not shown) there is an agitator assembly 1 (shown from the side view), which comprises a multi-armed agitator 2 connected through the agitator drive gear 3. Agitator 2 is connected to agitator drive gear 3 such that it can rotate freely of the drive gear. Agitator drive gear 3 is driven by power drive gear 4 which is connected to a main drive system (not shown).

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XEROX DISCLOSURE JOURNAL

LOW TONER SENSOR Proposed Classification Raymond E. Poehlein U.S. Cl. 355/14D

Int. CI. G03g 15/00

Volume 10 Number 2 March/April 1985

Low toner sensors for use in electrophotographic copiers are known to those skilled in the art. This disclosure relates to a low toner sensor. In the toner sump of a development assembly (not shown) there is an agitator assembly 1 (shown from the side view), which comprises a multi-armed agitator 2 connected through the agitator drive gear 3. Agitator 2 is connected to agitator drive gear 3 such that it can rotate freely of the drive gear. Agitator drive gear 3 is driven by power drive gear 4 which is connected to a main drive system (not shown).

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LOW TONER SENSOR (Cont'd)

The center post 5 of agitator drive gear 3, extends outward from the plane of the drive gear. Connected around the center post 5 above the drive gear 3 is the torsion spring 6. One end of the torsion spring 6 is caught by pin 7 which is embedded in drive gear 3. The other end of torsion spring 6 is caught by pin 8 which is embedded in drive arm 9. Drive arm 9 is connected to the center post 5 of agitator 2. As torque is applied to agitator drive gear 3, force is applied to torsion spring 6 by means of pin 7. The torque on torsion spring 6 is transmitted to pin 8 on drive arm 9 which then rotates agitator 2. The torsion spring 6 is designed such that when there is a small amount of toner in the sump, there is...