Toner cartridge having magnetic coupling

• US 8,175,493 B2
• Filed: 03/21/2008
• Issued: 05/08/2012
• Est. Priority Date: 03/21/2008
• Status: Active Grant

• Current Assignee: Katun Corporation (General Plastic Industrial Company Limited)
• Original Assignee: Katun Corporation (General Plastic Industrial Company Limited)
• Inventors: Peckjian, Bryan
• Primary Examiner(s): Gray, David
• Assistant Examiner(s): Yi, Roy Y
• Application Number:
  US12/077,748
• Publication Number:
  US 20090238604A1
• Time in Patent Office: 1,509 Days
• Field of Search: 399/120
• US Class Current: 399/120
• CPC Class Codes: G03G 15/0865 Arrangements for supplying new developer
• CPC Class Codes: G03G 15/0868 Toner cartridges fulfilling a continuous function within the electrographic apparatus during the use of the supplied developer material, e.g. toner discharge on demand, storing residual toner, acting as an active closure for the developer replenishing opening
• CPC Class Codes: G03G 21/10 Collecting or recycling waste developer
• CPC Class Codes: G03G 21/12 Toner waste containers
• CPC Class Codes: G03G 2215/085 Stirring member in developer container
• CPC Class Codes: G03G 2221/1657 transmitting mechanical drive power

Abstract

A toner cartridge having a magnetically coupled drive apparatus is provided. The cartridge provides a first toner holding member that houses toner and a second toner holding member adjacent to the first member that houses toner. A dividing wall separates the first toner holding member from the second toner holding member. A toner shifting component shifts the waste toner housed in the first toner holding member and a toner stirring component stirs the fresh toner housed in the second toner holding member. The toner shifting component and toner stirring component are magnetically coupled through the dividing wall so that when the toner stirring component rotates the toner shifting component rotates. The magnetic coupling disposed between the toner shifting component and toner stirring component engages without an opening through the dividing wall. As a result, waste toner cannot pass through the dividing wall into the fresh toner housing and vice versa.

Claims

1. A toner cartridge comprising:

a first toner holding member housing toner therein;

a second toner holding member adjacent to the first toner holding member housing toner therein;

a dividing wall separating the first toner holding member from the second toner holding member;

a toner shifting component that shifts the toner housed in the first toner holding member;

a toner stirring component that stirs the toner housed in the second toner holding member;

wherein the toner shifting component and toner stirring component are magnetically coupled through the dividing wall so that when the toner stirring component rotates the toner shifting component also rotates, the toner shifting component and toner stirring component each include at least one magnet, and each of the at least one magnets is positioned within one of the toner shifting component and the toner stirring component, respectively, of the first and second toner holding members; and

wherein the magnetic coupling between the toner shifting component and toner stirring component engage without an opening through the dividing wall.

2. The toner cartridge according to claim 1 wherein the toner shifting component has a first magnet disposed thereon and the toner stirring component has a second magnet disposed thereon and wherein the first and second magnets are oriented and positioned to attract one another.

3. The toner cartridge according to claim 1 wherein one of the toner shifting component or toner stirring component has a magnet disposed thereon and the other has a ferrous material disposed thereon and wherein the magnet and ferrous material are oriented and positioned to attract one another.

4. The toner cartridge according to claim 1 wherein the toner shifting component comprises a first plurality of magnets disposed within and the toner stirring component comprises a second plurality of magnets disposed within and wherein the first and second plurality of magnets are oriented and positioned to attract one another.

5. The toner cartridge according to claim 1 wherein the toner shifting component has an annular recess and wherein the toner stirring component has an annular recess.

6. The toner cartridge according to claim 5 wherein the dividing wall has a first protrusion on a first side that corresponds to the annular recess on the toner shifting component and a second protrusion on a second side that corresponds to the annular recess on the toner stirring component and wherein the annular recesses of the toner shifting component and toner stirring component are free to rotate about the first and second dividing wall protrusions.

7. The toner cartridge according to claim 1 wherein the toner shifting component has an annular post and wherein the toner stirring component has an annular post.

8. The toner cartridge according to claim 7 wherein the dividing wall has a first annular hub on a first side that corresponds to the annular post on the toner shifting component and a second annular hub on a second side that corresponds to the annular post on the toner stirring component and wherein the toner shifting component and toner stirring component are free to rotate about the first and second annular hubs.

9. A toner cartridge comprising:

a first toner holding member configured to house toner therein;

a second toner holding member adjacent to the first toner holding member configured to house toner therein;

a partition that separates the first toner holding member from the second toner holding member;

a toner shifting component that shifts the toner housed in the first toner holding member;

a toner stirring component that stirs the toner housed in the first toner holding member, wherein the toner shifting component and the toner stirring component are magnetically coupled through the partition so that when the toner shifting component rotates the toner stirring component also rotates, the toner shifting component and the toner stirring component each include at least one magnet, and each of the at least one magnets is positioned within one of the toner shifting component and the toner stirring component, respectively, of the first and second toner holding members; and

wherein the magnetic coupling between the toner shifting component and toner stirring component provides engagement without an opening through the dividing wall.

17. The toner cartridge according to claim 9 wherein one of the toner shifting component or toner stirring component has a magnet disposed thereon and the other has a ferrous material disposed thereon and wherein the magnet and ferrous material are oriented and positioned to attract one another.

18. The toner cartridge according to claim 9 wherein the toner shifting component comprises a first plurality of magnets disposed within and the toner stirring component comprises a second plurality of magnets disposed within and wherein the first and second plurality of magnets are oriented and positioned to attract one another.

19. The toner cartridge according to claim 9 wherein the toner shifting component has an annular recess and wherein the toner stirring component has an annular recess.

20. The toner cartridge according to claim 19 wherein the partition has a first protrusion on a first side that corresponds to the annular recess on the toner shifting component and a second protrusion on a second side that corresponds to the annular recess on the toner stirring component and wherein the annular recesses of the toner shifting component and toner stirring component are free to rotate about the first and second dividing wall protrusions.

10. A magnetic coupling for use in a toner cartridge, configured to house toner therein, the magnetic coupling comprising:

a toner shifting component configured for shifting the toner housed within the toner cartridge, the toner shifting component including a shifting component shaft;

a toner stirring component configured for stirring the toner housed within the toner cartridge, the toner stirring component including a stirring component shaft;

at least one magnet disposed within each of the toner shifting component and the toner stirring component, the at least one magnet within the toner shifting component is immediately adjacent to the shifting component shaft, and the at least one magnet within the toner stirring component is immediately adjacent to the stirring component shaft;

a dividing wall disposed between the toner shifting component and the toner stirring component; and

wherein the at least one magnet disposed within the toner shifting component and the at least one magnet disposed within the toner stirring component are magnetically coupled together through the dividing wall.

11. The magnetic coupling according to claim 10 wherein an outer peripheral edge of each of the at least one magnets is immediately adjacent to the respective shifting component shaft or the stirring component shaft.

12. The magnetic coupling according to claim 10 wherein the at least one magnet of the toner shifting component includes a first plurality of magnets disposed within, and the at least one magnet of the toner stirring component includes a second plurality of magnets disposed within and wherein the first and second plurality of magnets are oriented and positioned to attract one another.

13. The magnetic coupling according to claim 10 wherein the toner shifting component has an annular recess and wherein the toner stirring component has an annular recess.

14. The magnetic coupling according to claim 13 wherein the dividing wall has a first protrusion on a first side that corresponds to the annular recess on the toner shifting component and a second protrusion on a second side that corresponds to the annular recess on the toner stirring component and wherein the annular recesses of the toner shifting component and toner stirring component are free to rotate about the first and second dividing wall protrusions.

15. The magnetic coupling according to claim 10 wherein the toner shifting component has an annular post and wherein the toner stirring component has an annular post.

16. The magnetic coupling according to claim 15 wherein the dividing wall has a first annular hub on a first side that corresponds to the annular post on the toner shifting component and a second annular hub on a second side that corresponds to the annular post on the toner stirring component and wherein the toner shifting component and toner stirring component are free to rotate about the first and second annular hubs.