CA2556811A1 - Single component developer of emulsion aggregation toner - Google Patents
Single component developer of emulsion aggregation toner Download PDFInfo
- Publication number
- CA2556811A1 CA2556811A1 CA002556811A CA2556811A CA2556811A1 CA 2556811 A1 CA2556811 A1 CA 2556811A1 CA 002556811 A CA002556811 A CA 002556811A CA 2556811 A CA2556811 A CA 2556811A CA 2556811 A1 CA2556811 A1 CA 2556811A1
- Authority
- CA
- Canada
- Prior art keywords
- toner
- single component
- scd
- component development
- electrostatic images
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/0821—Developers with toner particles characterised by physical parameters
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/0802—Preparation methods
- G03G9/0804—Preparation methods whereby the components are brought together in a liquid dispersing medium
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/0819—Developers with toner particles characterised by the dimensions of the particles
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/0827—Developers with toner particles characterised by their shape, e.g. degree of sphericity
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/087—Binders for toner particles
- G03G9/08702—Binders for toner particles comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- G03G9/08706—Polymers of alkenyl-aromatic compounds
- G03G9/08708—Copolymers of styrene
- G03G9/08711—Copolymers of styrene with esters of acrylic or methacrylic acid
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/097—Plasticisers; Charge controlling agents
- G03G9/09708—Inorganic compounds
- G03G9/09716—Inorganic compounds treated with organic compounds
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/097—Plasticisers; Charge controlling agents
- G03G9/09708—Inorganic compounds
- G03G9/09725—Silicon-oxides; Silicates
Abstract
A toner for developing electrostatic images in a single component development (SCD) system free of carrier and including emulsion aggregation toner particles of a styrene acrylate polymer binder, at least one release agent and at least one colorant, wherein the toner particles have a volume average particle size of from about 5 µm to about 10 µm, an average circularity of about 0.95 to about 0.99, a volume and number geometric standard deviation (GSD v and n) of from about 1.10 to about 1.30, and an onset glass transition temperature of from about 45°C to about 65°C, is ideally suited for forming an image using a single component image forming device.
Claims (4)
1. A toner for developing electrostatic images in a single component development (SCD) system and including toner comprising emulsion aggregation toner particles comprising a styrene acrylate polymer binder, at least one release agent and at least one colorant, wherein the toner particles have a volume average particle size of from about 5 µm to about 10 µm, an average circularity of about 0.95 to about 0.99, a volume and number geometric standard deviation (GSD v and n) of from about 1.10 to about 1.30, and an onset glass transition temperature of from about 45°C to about 65°C.
2. A toner for developing electrostatic images in a single component development (SCD) system according to claim 1, wherein the toner particles further include a shell layer thereon.
3. A toner for developing electrostatic images in a single component development (SCD) system according to claim 2, wherein the shell layer consists essentially of a styrene acrylate polymer.
4. A toner for developing electrostatic images in a single component development (SCD) system according to claim 3, wherein the styrene acrylate polymer of the shell layer and the styrene acrylate polymer binder are the same or are composed of a similar polymer with different chemical and physical characteristics.
6. A toner for developing electrostatic images in a single component development (SCD) system according to claim 2, wherein the shell layer has a higher glass transition temperature than the styrene acrylate polymer binder.
7. A toner for developing electrostatic images in a single component development (SCD) system according to claim 2, wherein the shell layer has a lower glass transition temperature than the styrene acrylate polymer binder.
8. A toner for developing electrostatic images in a single component development (SCD) system according to claim 1, wherein the styrene acrylate polymer is a copolymer of styrene acrylate.
9. A toner for developing electrostatic images in a single component development (SCD) system according to claim 1, wherein the toner particles have an average particle size of from about 6 to about 8 µm, a circularity of about 0.95 to about 0.99, and a GSD v and n of about 1.15 to about 1.25.
10. A toner for developing electrostatic images in a single component development (SCD) system according to claim 1, wherein the toner has a triboelectric charging property of from about 10.0 to about 50.0 µC/g.
11. A toner for developing electrostatic images in a single component development (SCD) system according to claim 1, wherein the toner has a percent cohesion of from about 5% to about 30%.
12. A toner for developing electrostatic images in a single component development (SCD) system according to claim 1, wherein the toner particles have a melt flow index of from about 2.0 to about 70.0 g/10 minutes at a temperature of 130°C under an applied load of 5.0 kilograms with an L/D die ratio of 3.8.
13. A toner for developing electrostatic images in a single component development (SCD) system according to claim 1, wherein the toner particles have a melt flow index of from about 5.0 to about 30.0 g/10 minutes at a temperature of 130°C under an applied load of 5.0 kilograms with an L/D die ratio of 3.8.
14. A toner for developing electrostatic images in a single component development (SCD) system according to claim 1, wherein the toner particles include thereon one or more of external additive particles selected from the group consisting of a first silica having a size about 5 nm to about 15 nm that is coated with hexamethyldisilazane and/or a polydimethylsiloxane, a second silica having a size of about 20 nm to about 150 nm that is coated with hexamethyldisilazane and/or a polydimethylsiloxane, and titania having a size about 5 to about 130 nm.
15. A toner for developing electrostatic images in a single component development (SCD) system according to claim 14, wherein the first silica has a BET
(Brunauer, Emmett and Teller) surface area of from about 100 to about 300 m2/g, the second silica has a BET surface area of from about 20 to about 120 m2/g, and the titania preferably has a BET surface area of from about 20 to about 120 m2/g.
16. A toner for developing electrostatic images in a single component development (SCD) system according to claim 1, wherein the toner particles have a BET surface area of from about 0.5 to about 3.0 m2/g.
17. A set of four toners for developing electrostatic images in a single component development (SCD) system comprising a, a cyan toner, a magenta toner, a yellow toner and a black toner, wherein each of the toners is a single component developer free of carrier and each of the cyan toner, magenta toner and yellow toners are comprised of emulsion aggregation toner particles comprising a styrene acrylate polymer binder, at least one release agent and at least one colorant, wherein each of the toner particles have a volume average particle size of from about 5 µm to about 10 µm, an average circularity of about 0.95 to about 0.99, a volume and number geometric standard deviation (GSD v and n) of from about 1.10 to about 1.30, and an onset glass transition temperature of from about 45°C to about 65°C.
18. A single component development (SCD) system including an image developing station, wherein a housing of the SCD system contains a single component developer for developing electrostatic images and including toner comprising emulsion aggregation toner particles comprising a styrene acrylate polymer binder, at least one release agent and at least one colorant, wherein the toner particles have a volume average particle size of from about 5 µm to about 10 µm, an average circularity of about 0.95 to about 0.99, a volume and number geometric standard deviation (GSD v and n) of from about 1.10 to about 1.30, and an onset glass transition temperature of from about 45°C to about 65°C, and the single component developer is provided from the housing to the image developing station.
19. A method of forming an image with a single component developer, wherein the single component developer comprises toner particles free of carrier, comprising applying the toner particles having a triboelectric charge to an oppositely charged latent image on an imaging member to develop the image, and transferring the developed image to an image receiving substrate, and wherein the toner particles comprise emulsion aggregation toner particles comprising a styrene acrylate polymer binder, at least one release agent and at least one colorant, wherein the toner particles have a volume average particle size of from about 5 µm to about 10 µm, an average circularity of about 0.95 to about 0.99, a volume and number geometric standard deviation (GSD v and n) of from about 1.10 to about 1.30, and an onset glass transition temperature of from about 45°C to about 65°C.
20. The method according to claim 19, wherein the triboelectric charge of the single component developer is from about 10.0 to about 50.0 µC/g.
21. The method according to claim 20, wherein the image is formed with a reduced speed single component development machine.
22. The method according to claim 19, wherein the triboelectric charge of the single component toner is from about 10.0 to about 40.0 µC/g.
23. The method according to claim 22, wherein the image is formed with a high speed single component development machine.
6. A toner for developing electrostatic images in a single component development (SCD) system according to claim 2, wherein the shell layer has a higher glass transition temperature than the styrene acrylate polymer binder.
7. A toner for developing electrostatic images in a single component development (SCD) system according to claim 2, wherein the shell layer has a lower glass transition temperature than the styrene acrylate polymer binder.
8. A toner for developing electrostatic images in a single component development (SCD) system according to claim 1, wherein the styrene acrylate polymer is a copolymer of styrene acrylate.
9. A toner for developing electrostatic images in a single component development (SCD) system according to claim 1, wherein the toner particles have an average particle size of from about 6 to about 8 µm, a circularity of about 0.95 to about 0.99, and a GSD v and n of about 1.15 to about 1.25.
10. A toner for developing electrostatic images in a single component development (SCD) system according to claim 1, wherein the toner has a triboelectric charging property of from about 10.0 to about 50.0 µC/g.
11. A toner for developing electrostatic images in a single component development (SCD) system according to claim 1, wherein the toner has a percent cohesion of from about 5% to about 30%.
12. A toner for developing electrostatic images in a single component development (SCD) system according to claim 1, wherein the toner particles have a melt flow index of from about 2.0 to about 70.0 g/10 minutes at a temperature of 130°C under an applied load of 5.0 kilograms with an L/D die ratio of 3.8.
13. A toner for developing electrostatic images in a single component development (SCD) system according to claim 1, wherein the toner particles have a melt flow index of from about 5.0 to about 30.0 g/10 minutes at a temperature of 130°C under an applied load of 5.0 kilograms with an L/D die ratio of 3.8.
14. A toner for developing electrostatic images in a single component development (SCD) system according to claim 1, wherein the toner particles include thereon one or more of external additive particles selected from the group consisting of a first silica having a size about 5 nm to about 15 nm that is coated with hexamethyldisilazane and/or a polydimethylsiloxane, a second silica having a size of about 20 nm to about 150 nm that is coated with hexamethyldisilazane and/or a polydimethylsiloxane, and titania having a size about 5 to about 130 nm.
15. A toner for developing electrostatic images in a single component development (SCD) system according to claim 14, wherein the first silica has a BET
(Brunauer, Emmett and Teller) surface area of from about 100 to about 300 m2/g, the second silica has a BET surface area of from about 20 to about 120 m2/g, and the titania preferably has a BET surface area of from about 20 to about 120 m2/g.
16. A toner for developing electrostatic images in a single component development (SCD) system according to claim 1, wherein the toner particles have a BET surface area of from about 0.5 to about 3.0 m2/g.
17. A set of four toners for developing electrostatic images in a single component development (SCD) system comprising a, a cyan toner, a magenta toner, a yellow toner and a black toner, wherein each of the toners is a single component developer free of carrier and each of the cyan toner, magenta toner and yellow toners are comprised of emulsion aggregation toner particles comprising a styrene acrylate polymer binder, at least one release agent and at least one colorant, wherein each of the toner particles have a volume average particle size of from about 5 µm to about 10 µm, an average circularity of about 0.95 to about 0.99, a volume and number geometric standard deviation (GSD v and n) of from about 1.10 to about 1.30, and an onset glass transition temperature of from about 45°C to about 65°C.
18. A single component development (SCD) system including an image developing station, wherein a housing of the SCD system contains a single component developer for developing electrostatic images and including toner comprising emulsion aggregation toner particles comprising a styrene acrylate polymer binder, at least one release agent and at least one colorant, wherein the toner particles have a volume average particle size of from about 5 µm to about 10 µm, an average circularity of about 0.95 to about 0.99, a volume and number geometric standard deviation (GSD v and n) of from about 1.10 to about 1.30, and an onset glass transition temperature of from about 45°C to about 65°C, and the single component developer is provided from the housing to the image developing station.
19. A method of forming an image with a single component developer, wherein the single component developer comprises toner particles free of carrier, comprising applying the toner particles having a triboelectric charge to an oppositely charged latent image on an imaging member to develop the image, and transferring the developed image to an image receiving substrate, and wherein the toner particles comprise emulsion aggregation toner particles comprising a styrene acrylate polymer binder, at least one release agent and at least one colorant, wherein the toner particles have a volume average particle size of from about 5 µm to about 10 µm, an average circularity of about 0.95 to about 0.99, a volume and number geometric standard deviation (GSD v and n) of from about 1.10 to about 1.30, and an onset glass transition temperature of from about 45°C to about 65°C.
20. The method according to claim 19, wherein the triboelectric charge of the single component developer is from about 10.0 to about 50.0 µC/g.
21. The method according to claim 20, wherein the image is formed with a reduced speed single component development machine.
22. The method according to claim 19, wherein the triboelectric charge of the single component toner is from about 10.0 to about 40.0 µC/g.
23. The method according to claim 22, wherein the image is formed with a high speed single component development machine.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/213,754 | 2005-08-30 | ||
US11/213,754 US7402370B2 (en) | 2005-08-30 | 2005-08-30 | Single component developer of emulsion aggregation toner |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2556811A1 true CA2556811A1 (en) | 2007-02-28 |
CA2556811C CA2556811C (en) | 2010-07-20 |
Family
ID=37479296
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2556811A Expired - Fee Related CA2556811C (en) | 2005-08-30 | 2006-08-23 | Single component developer of emulsion aggregation toner |
Country Status (7)
Country | Link |
---|---|
US (1) | US7402370B2 (en) |
EP (1) | EP1760532B1 (en) |
JP (1) | JP4970876B2 (en) |
CN (1) | CN1924713B (en) |
BR (1) | BRPI0603652B1 (en) |
CA (1) | CA2556811C (en) |
MX (1) | MXPA06009788A (en) |
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-
2005
- 2005-08-30 US US11/213,754 patent/US7402370B2/en active Active
-
2006
- 2006-07-13 EP EP06117138.5A patent/EP1760532B1/en active Active
- 2006-08-23 CA CA2556811A patent/CA2556811C/en not_active Expired - Fee Related
- 2006-08-28 MX MXPA06009788A patent/MXPA06009788A/en active IP Right Grant
- 2006-08-29 CN CN2006101257600A patent/CN1924713B/en not_active Expired - Fee Related
- 2006-08-29 JP JP2006232581A patent/JP4970876B2/en active Active
- 2006-08-30 BR BRPI0603652-0A patent/BRPI0603652B1/en active IP Right Grant
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BRPI0603652B1 (en) | 2018-05-02 |
CN1924713A (en) | 2007-03-07 |
US7402370B2 (en) | 2008-07-22 |
BRPI0603652A (en) | 2007-04-27 |
JP2007065667A (en) | 2007-03-15 |
JP4970876B2 (en) | 2012-07-11 |
MXPA06009788A (en) | 2007-02-27 |
EP1760532A2 (en) | 2007-03-07 |
EP1760532B1 (en) | 2013-05-01 |
CN1924713B (en) | 2012-07-04 |
US20070048643A1 (en) | 2007-03-01 |
CA2556811C (en) | 2010-07-20 |
EP1760532A3 (en) | 2009-03-25 |
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