IP Library Granted Patent US 7,158,745
Granted Patent B2
US 7,158,745 · App. 11/086,941 · Granted Jan 2, 2007

Method and device to regulate toner in an image forming device

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Quick Facts
Patent No.
US 7,158,745
App. No.
11/086,941
Granted
Jan 2, 2007
Kind
B2
Abstract

A device to regulate toner within an image forming apparatus. The regulating member has a first section and a toner regulating edge with at least one gap. The regulating member controls the amount of toner that is distributed on the surface of the toner developer roller by contacting the toner developing roller in a contact region. The gap, having at least one upper edge, may regulate toner on the toner developer roller near the contact region. The toner regulating device may prevent inadvertent toner marks that may appear on printed media.

Claims (33)

1. A device to regulate toner on a developer roller within an image forming apparatus comprising:

a longitudinal edge;

a lateral edge that forms a corner with the longitudinal edge;

a regulating section spaced inward from the longitudinal edge and in contact with the developer roller; and

a gap positioned within the longitudinal edge and spaced inward from the corner, the gap extending inward from the longitudinal edge into the regulating section.

2. The device of claim 1 , wherein the gap includes an inner edge, an outer edge and an upper edge.

3. The device of claim 2 , wherein the upper edge is located within the regulating section that contacts a developer roller.

4. The device of claim 3 , wherein the upper edge is positioned entirely within the regulating section.

5. The device of claim 2 , wherein the upper edge is substantially parallel to the longitudinal edge.

6. The device of claim 2 , wherein the inner and outer edges are substantially parallel.

7. A device to contact and regulate toner on a developer roller within an image forming apparatus comprising:

an edge that extends beyond the developer roller;

a regulating section that contacts the developer roller, the regulating section being spaced inward from the edge; and

a gap defined between first and second points along the edge and having a depth to extend into the regulating section.

8. The device of claim 7 , wherein the gap comprises three separate sides.

9. The device of claim 7 , wherein the gap has at least one arcuate edge.

10. The device of claim 7 , further comprising a second gap positioned along the edge and being spaced apart from the gap.

11. The device of claim 7 , further comprising a mounted edge opposite from the edge, the mounted edge being mounted to the image forming apparatus.

12. The device of claim 7 , wherein a distance defined between a center of the regulating section and the edge is between about 0.6 mm and about 1.4 mm.

13. The device of claim 12 , wherein the regulating section has a length of about 1 mm.

14. A device to regulate toner on a developer roller within an image forming apparatus comprising:

a longitudinal edge;

a regulating section positioned inward from the longitudinal edge and in contact with the developer roller; and

a gap positioned along the longitudinal edge having an upper edge substantially parallel to the longitudinal edge and extending into the regulating section.

15. The device of claim 14 , wherein the gap extends inward from a lateral edge.

16. A device to regulate toner within an image forming apparatus comprising:

a developer roller;

a regulating member having a longitudinal edge and a regulating section spaced inward from the longitudinal edge to contact and regulate the toner on the developer roller; and

a gap extending inward from the longitudinal edge and having a regulating edge positioned within the regulating section.

17. The device of claim 16 , wherein the gap comprises at least two sides.

18. The device of claim 16 , wherein the developer roller rotates in a direction into the longitudinal edge of the regulating member.

19. The device of claim 16 , wherein the gap has at least one arcuate section.

20. The device of claim 16 , further comprising a second gap extending inward from the longitudinal edge and being spaced apart from the gap.

Assignments (3)
RELEASE OF SECURITY INTEREST Recorded Jan 18, 2024
From: CHINA CITIC BANK CORPORATION LIMITED, GUANGZHOU BRANCH, AS COLLATERAL AGENT
To: LEXMARK INTERNATIONAL, INC.
Reel/Frame 066345/0026 →
CORRECTIVE ASSIGNMENT TO CORRECT THE INCORRECT U.S. PATENT NUMBER PREVIOUSLY RECORDED AT REEL: 046989 FRAME: 0396. ASSIGNOR(S) HEREBY CONFIRMS THE PATENT SECURITY AGREEMENT. Recorded Oct 24, 2018
From: LEXMARK INTERNATIONAL, INC.
To: CHINA CITIC BANK CORPORATION LIMITED, GUANGZHOU BRANCH, AS COLLATERAL AGENT
Reel/Frame 047760/0795 →
PATENT SECURITY AGREEMENT Recorded Aug 30, 2018
From: LEXMARK INTERNATIONAL, INC.
To: CHINA CITIC BANK CORPORATION LIMITED, GUANGZHOU BRANCH, AS COLLATERAL AGENT
Reel/Frame 046989/0396 →