US Patent No: 7,838,187
Number of patents in Portfolio can not be more than 2000
Imaging member
Stats
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Nov 23, 2010
Issued date -
Aug 21, 2007
filing date -
11/894,451
serial no -
In Force
status
Importance
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Abstract
The presently disclosed embodiments are directed to charge transport layers useful in electrostatography. More particularly, the embodiments pertain to an improved electrostatographic imaging member having a charge transport layer that is dual-dopant, wherein operating life improvement is achieved by incorporating a small amount of compatible thermalsetting resin and polyhedral oligomeric silsesquioxane into the layer. Incorporation of these resins have been shown to increase charge transport life.
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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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| 4,265,990 Imaging system with a diamine charge transport material in a polycarbonate resin | 635 | 1978 | |
| 4,291,110 Siloxane hole trapping layer for overcoated photoreceptors | 176 | 1979 | |
| 4,286,033 Trapping layer overcoated inorganic photoresponsive device | 179 | 1980 | |
| 4,338,387 Overcoated photoreceptor containing inorganic electron trapping and hole trapping layers | 181 | 1981 | |
| 4,587,189 Photoconductive imaging members with perylene pigment compositions | 281 | 1985 | |
| 4,664,995 Electrostatographic imaging members | 140 | 1985 | |
| 4,988,597 Conductive and blocking layers for electrophotographic imaging members | 68 | 1989 | |
| 5,244,762 Electrophotographic imaging member with blocking layer containing uncrosslinked chemically modified copolymer | 60 | 1992 | |
| 5,756,245 Photoconductive imaging members | 68 | 1997 | |
| 6,991,880 Imaging members | 3 | 2002 | |
| 7,468,231 Imaging members | 6 | 2005 | |
| 7,312,008 High-performance surface layer for photoreceptors | 2 | 2005 | |
| 7,585,602 Imaging member having antistatic anticurl back coating containing polyhedral oligomeric silsequioxane silanol | 1 | 2006 | |
| 2009/0253,056 LOW FRICTION ELECTROSTATOGRAPHIC IMAGING MEMBER | 3 | 2008 | |
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| 7,700,248 Organic charge transporting polymers including charge transport moieties and silane groups, and silsesquioxane compositions prepared therefrom | 1 | 2003 | |
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| 2005/0175,363 Optical antenna and wireless optical system using the same | 2004 | ||
Patent Citation Ranking
Maintenance Fees
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| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | May 23, 2014 |
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| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 23, 2022 |
| Fee | Large entity fee | small entity fee | micro entity fee |
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| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
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