IP Library › Granted Patent US 11,397,387
Granted Patent B2
US 11,397,387 · App. 17/086,516 · Granted Jul 26, 2022

Toner compositions and additives

Inventors: Richard Philip Nelson Veregin (Mississauga, CA); Kimberly D. Nosella (Ancaster, CA); Raysa Rodriguez Diaz (Burlington, CA); Melanie Lynn Davis (Hamilton, CA); Cuong Vong (Hamilton, CA)
Assignee: Xerox Corporation
G03G9/09766C08F220/24G03G9/0819
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Quick Facts
Patent No.
US 11,397,387
App. No.
17/086,516
Granted
Jul 26, 2022
Kind
B2
Abstract

Disclosed herein is a toner composition, developer and additive for a toner composition. The toner composition includes toner particles including at least one resin, an optional colorant, an optional wax, and a polymeric toner additive on at least a portion of an external surface of the toner particles. The polymeric toner additive includes a polymeric resin including a fluorinated acrylic monomer, a cross-linkable monomer containing two or more vinyl groups at 8 wt % to 40 wt % of the polymeric resin, and optionally a charge control agent comprised of a nitrogen containing group at 0.1 wt % to 1.5 wt % of the polymeric resin.

Claims (23)

1. A toner composition comprising: emulsion aggregation toner particles comprising at least one polyester amorphous resin and one polyester crystalline resin, a surfactant, an optional colorant, an optional wax, and a polymeric toner additive on at least a portion of an external surface of the emulsion aggregation toner particles, the polymeric toner additive comprising:

a polymeric resin comprising a fluorinated acrylic monomer, a cross-linkable monomer containing two or more vinyl groups at 8 wt % to 40 wt % of the polymeric resin, and a charge control agent monomer comprising nitrogen containing group at 0.1 wt % to 1.5 wt % of the polymeric resin.

2. The toner composition of claim 1 , wherein the fluorinated acrylic monomer comprises a fluorinated acrylate monomer or fluorinated methacrylate monomer.

3. The toner composition of claim 1 , wherein the charge control agent monomer nitrogen comprises an acrylate monomer or a methacrylate monomer.

4. The toner composition of claim 1 , wherein the polymeric resin further comprises a non-fluorinated hydrophobic monomer.

5. The toner composition of claim 1 , wherein the polymeric resin further comprises cyclohexyl methacrylate.

6. The toner composition of claim 1 , wherein the cross-linkable monomer comprises divinyl benzene.

7. The toner composition of claim 1 , further comprising at least one additive selected from the group of silica, titania, alumina, and a cross-linked non-fluorinated organic surface additive.

8. The toner composition of claim 1 , wherein the emulsion aggregation toner particles comprise a size from about 4 micron to about 10 microns.

9. The toner composition of claim 1 , further comprising a cleaning additive selected from the group consisting of: stearates, cerium oxide, and strontium titanate.

10. The toner composition of claim 1 , wherein the polymeric additive comprises from 0.1 weight percent to 5 weight percent of the toner composition.

11. The toner composition of claim 1 , wherein the polymeric additive comprises a size of from 25 nanometers to 250 nanometers.

12. A developer comprising: a toner composition; and a toner carrier, wherein the toner composition comprising: emulsion aggregation toner particles comprising at least one polyester amorphous resin and one polyester crystalline resin, a surfactant, an optional colorant, an optional wax, and a polymeric toner additive on at least a portion of an external surface of the toner particles, the polymeric toner additive comprising:

a polymeric resin comprising a fluorinated acrylic monomer, a cross-linkable monomer containing two or more vinyl groups at 8 wt % to 40 wt % of the polymeric resin, and a charge control agent monomer comprised of a nitrogen containing group at 0.1 wt % to 1.5 wt % of the polymeric resin.

13. The developer of claim 12 , wherein the fluorinated acrylic monomer comprises a fluorinated acrylate monomer or fluorinated methacrylate monomer.

14. The developer of claim 12 , wherein the charge control agent monomer nitrogen comprises an acrylate monomer or a methacrylate monomer.

15. The developer of claim 12 , wherein the polymeric resin further comprises a non-fluorinated hydrophobic monomer.

16. The developer of claim 12 , wherein the polymeric resin further comprises cyclohexyl methacrylate.

17. The developer of claim 12 , wherein the cross-linkable monomer comprises divinyl benzene.

18. The developer of claim 12 , further comprising an additive selected from the group of silica, titania, alumina, and a cross-linked non-fluorinated organic surface additive.

19. A toner composition comprising: emulsion aggregation toner particles including at least one polyester amorphous resin and one polyester crystalline resin, and a surfactant, and

a polymeric resin comprising a fluorinated acrylic monomer, a cross-linkable monomer containing two or more vinyl groups at 8 wt % to 40 wt % of the polymeric resin, and a charge control agent monomer of a nitrogen containing group at 0.1 wt % to 1.5 wt % of the polymeric resin.

20. The toner composition of claim 1 , wherein the emulsion polymerization polymeric resin comprises a size of from 25 nanometers to 250 nanometers.

Assignments (9)
SECOND LIEN NOTES PATENT SECURITY AGREEMENT Recorded Jul 2, 2025
From: XEROX CORPORATION
To: U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 071785/0550 →
FIRST LIEN NOTES PATENT SECURITY AGREEMENT Recorded Apr 11, 2025
From: XEROX CORPORATION
To: U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 070824/0001 →
SECURITY INTEREST Recorded Feb 13, 2024
From: XEROX CORPORATION
To: CITIBANK, N.A., AS COLLATERAL AGENT
Reel/Frame 066741/0001 →
TERMINATION AND RELEASE OF SECURITY INTEREST IN PATENTS RECORDED AT RF 064760/0389 Recorded Feb 13, 2024
From: CITIBANK, N.A., AS COLLATERAL AGENT
To: XEROX CORPORATION
Reel/Frame 068261/0001 →
SECURITY INTEREST Recorded Nov 20, 2023
From: XEROX CORPORATION
To: JEFFERIES FINANCE LLC, AS COLLATERAL AGENT
Reel/Frame 065628/0019 →
SECURITY INTEREST Recorded Jun 22, 2023
From: XEROX CORPORATION
To: CITIBANK, N.A., AS COLLATERAL AGENT
Reel/Frame 064760/0389 →
RELEASE OF SECURITY INTEREST IN PATENTS AT R/F 062740/0214 Recorded May 18, 2023
From: CITIBANK, N.A., AS AGENT
To: XEROX CORPORATION
Reel/Frame 063694/0122 →
SECURITY INTEREST Recorded Nov 10, 2022
From: XEROX CORPORATION
To: CITIBANK, N.A., AS AGENT
Reel/Frame 062740/0214 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 3, 2020
From: VEREGIN, RICHARD PHILIP NELSON; NOSELLA, KIMBERLY D.; DIAZ, RAYSA RODRIGUEZ; DAVIS, MELANIE LYNN; VONG, CUONG
To: XEROX CORPORATION
Reel/Frame 054253/0713 →
Continuity (1)
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