IP Library Granted Patent US 7,505,705
Granted Patent B2
US 7,505,705 · App. 11/369,151 · Granted Mar 17, 2009

Electrical discharging of image transfer assemblies

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Quick Facts
Patent No.
US 7,505,705
App. No.
11/369,151
Granted
Mar 17, 2009
Kind
B2
Abstract

The present invention relates to an assembly or method for use with an image forming device. The device may include an image transfer device capable of receiving an extraneous electrostatic charge from a source. A discharge path may then be configured to remove all or a portion of the extraneous electrostatic charge from the image transfer device.

Claims (28)

1. An assembly for an image forming device comprising:

an image transfer drum comprising a conductive outer surface and a conductive inner support structure, wherein the image transfer drum is configured to transfer information to a print media; and

a discharge path configured to electrically connect the conductive outer surface and the conductive inner support structure of the image transfer drum, wherein the discharge path includes a resistive element, wherein the resistive element includes a resistive tape.

2. The assembly of claim 1 , further comprising:

a component capable of passing an extraneous electrostatic charge from a user to the image transfer drum.

3. The assembly of claim 2 , wherein the component includes a conductive handling surface.

4. The assembly of claim 1 , further comprising:

a switch capable of electrically opening the discharge path.

5. The assembly of claim 4 , wherein the switch includes a mechanical switch located in the image forming device.

6. The assembly of claim 1 located within a printer cartridge.

7. An assembly for an image forming device, comprising:

an image transfer device selected capable of receiving an extraneous electrostatic charge from a source;

a discharge path configured to remove all or a portion of the extraneous electrostatic charge from the image transfer device, wherein the discharge path includes a resistive element with a resistance of at least 100 Mega-Ohm; and

a component capable of passing the extraneous electrostatic charge from a user to the image transfer device.

8. The assembly of claim 7 , wherein the resistive element has a resistance of less than 10 Giga-Ohm.

9. The assembly of claim 7 located within said image forming device.

10. The assembly of claim 7 located within a printer cartridge.

11. The assembly of claim 7 , wherein the component includes a handling surface.

12. An assembly for an image forming device, comprising:

an image transfer device capable of receiving an extraneous electrostatic charge from a source wherein the image transfer device is selected from the group consisting of a photoconductive device and an image transfer drum; and

a discharge path configured to remove all or a portion of the extraneous electrostatic charge from the image transfer device, wherein the discharge path includes a resistive element with a resistance of at least 100 Mega-Ohm.

13. An assembly for an image forming device, comprising:

an image transfer device capable of receiving an extraneous electrostatic charge from a source; and

a discharge path configured to remove all or a portion of the extraneous electrostatic charge from the image transfer device, wherein the discharge path includes a resistive element with a resistance of at least 100 Mega-Ohm wherein the resistive element is selected from a group consisting of a resistive tape, a semi-conductive plastic, a photoconductive material, and a resistive coating.

14. An assembly for an image forming device, comprising:

an image transfer device capable of receiving an extraneous electrostatic charge from a source; and

a discharge path configured to remove all or a portion of the extraneous electrostatic charge from the image transfer device, wherein the discharge path includes a resistive element with a resistance of at least 100 Mega-Ohm; and

a switch capable of electrically opening the discharge path.

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 →