US Patent No: 7,229,735
Number of patents in Portfolio can not be more than 2000
Toner compositions
Stats
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Jun 12, 2007
Issued date -
Jul 26, 2004
filing date -
10/899,244
serial no -
In Force
status
Importance
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Abstract
A toner composition for use in a xerographic or electrostatographic imaging process. The toner composition includes a toner particle and an optional primary external surface additive and a friable external surface additive. The friable external surface additive may also be a material that is capable of functioning as a primary external surface additive. The friable external surface additive is generally larger than the primary surface additive and capable of having portions of the friable particle broken or abraded off during the imaging process. The particles that are abraded off the friable additive can replace the primary external additive particles that become embedded into toner particles during the development process. The friable additives contribute to reducing toner aging and provide a toner with satisfactory flow and triboelectric properties.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,221,856 Electrographic toner containing resin-compatible quaternary ammonium compound | 38 | 1978 | |
| 4,265,990 Imaging system with a diamine charge transport material in a polycarbonate resin | 635 | 1978 | |
| 4,291,111 Nitrogen-containing additives for magnetic toners having hydrophobic and hydrophilic moiety | 26 | 1979 | |
| 4,338,390 Quarternary ammonium sulfate or sulfonate charge control agents for electrophotographic developers compatible with viton fuser | 335 | 1980 | |
| 4,312,933 Method of imaging using nitrogen-containing additives for magnetic toners | 19 | 1981 | |
| 4,411,974 Ortho-halo phenyl carboxylic acid charge enhancing additives | 38 | 1982 | |
| 4,585,884 Silylated compositions, and deuterated hydroxyl squaraine compositions and processes | 29 | 1984 | |
| 4,560,635 Toner compositions with ammonium sulfate charge enhancing additives | 260 | 1984 | |
| 4,558,108 Aqueous suspension polymerization process | 115 | 1984 | |
| 4,563,408 Photoconductive imaging member with hydroxyaromatic antioxidant | 67 | 1984 | |
| 4,584,253 Electrophotographic imaging system | 60 | 1984 | |
| 4,883,736 Electrophotographic toner and developer compositions with polymeric alcohol waxes | 54 | 1987 | |
| 4,935,326 Electrophotographic carrier particles coated with polymer mixture | 222 | 1987 | |
| 4,937,166 Polymer coated carrier particles for electrophotographic developers | 246 | 1987 | |
| 4,904,762 Toner compositions with charge enhancing additives | 21 | 1989 | |
| 5,223,368 Toner and developer compositions comprising aluminum charge control agent | 62 | 1991 | |
| 5,304,449 Toner and developer compositions with pyridinium compounds and tetrasubstituted ammonium salts as charge enhancing additives | 9 | 1992 | |
| 5,352,556 Toners having cross-linked toner resins | 21 | 1993 | |
| 6,071,665 Toner processes with surface additives | 7 | 1995 | |
| 6,103,440 Toner composition and processes thereof | 10 | 1998 | |
| 6,004,714 Toner compositions | 49 | 1998 | |
| 6,124,071 Toner compositions | 7 | 1999 | |
| 6,017,668 Toner compositions | 7 | 1999 | |
| 6,087,059 Toner and developer compositions | 31 | 1999 | |
| 6,420,078 Toner compositions with surface additives | 1 | 2000 | |
| 6,610,452 Toner compositions with surface additives | 4 | 2002 | |
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| 6,383,704 Full color electrophotographic toner, full color electrophotographic developer and image forming method | 9 | 2000 | |
| 6,846,603 Color toner, electrostatic latent image developer, image forming method, and image producing device | 3 | 2003 | |
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| 5,989,768 Charge-modified metal oxides with cyclic silazane and electrostatographic systems incorporating same | 11 | 1997 | |
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| 4,206,064 Negatively charged toner for developing electrostatic images containing metal complex of salicyclic acid compound as charge control agent | 81 | 1978 | |
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| 4,314,937 1:2 Chromium unsymmetrical complexes of azo and disazo dyes | 8 | 1980 | |
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| 4,394,430 Electrophotographic dry toner and developer compositions | 151 | 1981 | |
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| 4,433,040 Electrophotographic toner containing a metal complex dye | 36 | 1981 | |
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| 4,404,271 Metal complexes for use in developers for electrostatic images, charge control function | 31 | 1981 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Dec 12, 2014 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 12, 2018 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |