IP Library › Granted Patent US 7,157,202
Granted Patent B1
US 7,157,202 · App. 10/669,078 · Granted Jan 2, 2007

Method and apparatus for reducing densification of multiple component electrographic developer

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Quick Facts
Patent No.
US 7,157,202
App. No.
10/669,078
Granted
Jan 2, 2007
Kind
B1
Abstract

The invention relates to the field of two component magnetic brush development of electrographic images. According to one aspect of the invention, a method of processing a developer is provided for developing an electrostatic image wherein a set developer is exercised with a blender prior to using the developer for developing the electrostatic image. According to a further aspect of the invention, the developer comprises ferromagnetic toner and hard magnetic carriers.

Claims (13)

1. A method of processing a developer, including ferromagnetic toner and hard magnetic carriers, for developing an electrostatic image, comprising:

heating a set developer, adding a relatively small amount of ferromagnetic toner to said set developer, and exercising said set developer with a magnetic brush and a blender prior to using said developer for developing said electrostatic image, while removing developer from a toning shell for transporting developer for developing said electrostatic image.

2. The method of processing a developer of claim 1 , wherein said developer is heated to a normal operating temperature.

3. The method of processing a developer of claim 1 , wherein said added amount of ferromagnetic toner is on the order of 0.1 to 1.0% by weight of said developer mass.

4. The method of processing a developer of claim 1 , wherein said added amount of ferromagnetic toner is on the order of 0.5%.

5. A method of processing a developer, including ferromagnetic toner and hard magnetic carriers, comprising:

exercising a fully developed, set developer in a pre-imaging blending cycle with a magnetic brush and a blender while simultaneously heating the developer.

6. The method of processing a developer of claim 5 , wherein said developer is heated to a normal operating temperature.

7. The method of processing a developer of claim 5 , further adding a relatively small amount of ferromagnetic toner to the developer.

8. The method of processing a developer of claim 7 , wherein the added amount of ferromagnetic toner is on the order of 0.1 to 1.0% by weight of said developer mass.

9. The method of processing a developer of claim 7 , wherein the added amount of ferromagnetic toner is on the order of 0.5% by weight of said developer mass.

10. The method of processing a developer of claim 7 , wherein said adding said amount of ferromagnetic toner takes place before said exercising of said set developer.

11. The method of processing a developer of claim 7 , wherein said adding said amount of ferromagnetic toner takes place during said exercising of said set developer.

Assignments (8)
RELEASE OF SECURITY INTEREST Recorded Jan 24, 2020
From: BARCLAYS BANK PLC
To: EASTMAN KODAK COMPANY; FAR EAST DEVELOPMENT LTD.; FPC INC.; KODAK (NEAR EAST) INC.; KODAK AMERICAS LTD.; KODAK REALTY INC.; LASER PACIFIC MEDIA CORPORATION; QUALEX INC.; KODAK PHILIPPINES LTD.; NPEC INC.
Reel/Frame 052773/0001 →
RELEASE OF SECURITY INTEREST Recorded Jul 30, 2019
From: JP MORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
To: EASTMAN KODAK COMPANY; FAR EAST DEVELOPMENT LTD.; PFC, INC.; KODAK (NEAR EAST), INC.; KODAK AMERICAS, LTD.; KODAK IMAGING NETWORK, INC.; KODAK PORTUGUESA LIMITED; KODAK REALTY, INC.; LASER PACIFIC MEDIA CORPORATION; PAKON, INC.; QUALEX, INC.; KODAK PHILIPPINES, LTD.; NPEC, INC.; CREO MANUFACTURING AMERICA LLC; KODAK AVIATION LEASING LLC
Reel/Frame 049901/0001 →
RELEASE OF SECURITY INTEREST Recorded Jul 22, 2019
From: JP MORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
To: EASTMAN KODAK COMPANY; FAR EAST DEVELOPMENT LTD.; FPC, INC.; KODAK (NEAR EAST), INC.; KODAK AMERICAS, LTD.; KODAK IMAGING NETWORK, INC.; KODAK PORTUGUESA LIMITED; KODAK REALTY, INC.; LASER PACIFIC MEDIA CORPORATION; PAKON, INC.; QUALEX, INC.; KODAK PHILIPPINES, LTD.; NPEC, INC.; CREO MANUFACTURING AMERICA LLC; KODAK AVIATION LEASING LLC
Reel/Frame 050239/0001 →
INTELLECTUAL PROPERTY SECURITY AGREEMENT (SECOND LIEN) Recorded Sep 5, 2013
From: EASTMAN KODAK COMPANY; FAR EAST DEVELOPMENT LTD.; FPC INC.; KODAK (NEAR EAST), INC.; KODAK AMERICAS, LTD.; KODAK IMAGING NETWORK, INC.; KODAK PORTUGUESA LIMITED; KODAK REALTY, INC.; LASER-PACIFIC MEDIA CORPORATION; PAKON, INC.; QUALEX INC.; KODAK PHILIPPINES, LTD.; NPEC INC.; CREO MANUFACTURING AMERICA LLC; KODAK AVIATION LEASING LLC
To: BARCLAYS BANK PLC, AS ADMINISTRATIVE AGENT
Reel/Frame 031159/0001 →
INTELLECTUAL PROPERTY SECURITY AGREEMENT (ABL) Recorded Sep 5, 2013
From: EASTMAN KODAK COMPANY; FAR EAST DEVELOPMENT LTD.; FPC INC.; KODAK (NEAR EAST), INC.; KODAK AMERICAS, LTD.; KODAK IMAGING NETWORK, INC.; KODAK PORTUGUESA LIMITED; KODAK REALTY, INC.; LASER-PACIFIC MEDIA CORPORATION; PAKON, INC.; QUALEX INC.; KODAK PHILIPPINES, LTD.; NPEC INC.; CREO MANUFACTURING AMERICA LLC; KODAK AVIATION LEASING LLC
To: BANK OF AMERICA N.A., AS AGENT
Reel/Frame 031162/0117 →
INTELLECTUAL PROPERTY SECURITY AGREEMENT (FIRST LIEN) Recorded Sep 5, 2013
From: EASTMAN KODAK COMPANY; FAR EAST DEVELOPMENT LTD.; FPC INC.; KODAK (NEAR EAST), INC.; KODAK IMAGING NETWORK, INC.; KODAK PORTUGUESA LIMITED; KODAK REALTY, INC.; LASER-PACIFIC MEDIA CORPORATION; PAKON, INC.; QUALEX INC.; KODAK PHILIPPINES, LTD.; NPEC INC.; CREO MANUFACTURING AMERICA LLC; KODAK AVIATION LEASING LLC; KODAK AMERICAS, LTD.
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE
Reel/Frame 031158/0001 →
RELEASE OF SECURITY INTEREST IN PATENTS Recorded Sep 5, 2013
From: CITICORP NORTH AMERICA, INC., AS SENIOR DIP AGENT; WILMINGTON TRUST, NATIONAL ASSOCIATION, AS JUNIOR DIP AGENT
To: EASTMAN KODAK COMPANY; PAKON, INC.
Reel/Frame 031157/0451 →
SECURITY INTEREST Recorded Feb 21, 2012
From: EASTMAN KODAK COMPANY; PAKON, INC.
To: CITICORP NORTH AMERICA, INC., AS AGENT
Reel/Frame 028201/0420 →