US Patent No: 7,166,397

Number of patents in Portfolio can not be more than 2000

Imaging members

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ALSO PUBLISHED AS: 20050136349
ATTORNEY / AGENT: (SPONSORED)
 

Importance

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Abstract

An electrophotographic imaging member having a charge generating layer and a charge transport layer overlayed thereon is provided. The charge transport layer has a lower surface and an upper surface, wherein the lower surface is in contiguous contact with the charge generating layer. The charge transport layer comprises a film forming polymer binder and a charge transport compound molecularly dispersed or dissolved therein to form a solid solution. The concentration of the charge transport compound in the charge transport layer decreases from the lower surface to the upper surface. In such a construction, the resulting charge transport layer exhibits enhanced cracking suppression, improved wear resistance, excellent imaging member electrical performance, and improved copy print out quality.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
XEROX CORPORATIONSTAMFORD, CT17085

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ahuja, Suresh K Webster, NY 15 127
Horgan, Anthony M Pittsford, NY 130 1058
Mishra, Satchidanand Webster, NY 150 976
Murti, Dasarao K Mississauga, CA 48 838
Yu, Robert C U Webster, NY 204 2061

Cited Art

Patent Info (Count) # Cites Year
 
XEROX CORPORATION (21)
4,265,990 Imaging system with a diamine charge transport material in a polycarbonate resin 635 1978
4,306,008 Imaging system with a diamine charge transport material in a polycarbonate resin 104 1978
4,233,384 Imaging system using novel charge transport layer 96 1979
4,291,110 Siloxane hole trapping layer for overcoated photoreceptors 176 1979
4,273,846 Imaging member having a charge transport layer of a terphenyl diamine and a polycarbonate resin 60 1979
4,299,897 Aromatic amino charge transport layer in electrophotography 97 1980
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
4,439,507 Layered photoresponsive imaging device with photogenerating pigments dispersed in a polyhydroxy ether composition 111 1982
4,587,189 Photoconductive imaging members with perylene pigment compositions 281 1985
4,664,995 Electrostatographic imaging members 140 1985
5,013,624 Glassy metal oxide layers for photoreceptor applications 14 1989
5,055,366 Polymeric protective overcoatings contain hole transport material for electrophotographic imaging members 15 1989
5,830,614 Multilayer organic photoreceptor employing a dual layer of charge transporting polymers 27 1991
5,473,064 Hydroxygallium phthalocyanine imaging members and processes 159 1993
5,521,043 Hydroxygallium phthalocyanine pigments with block copolymer binders 18 1995
6,015,645 Photoconductive imaging members 46 1998
5,935,748 Mechanically robust anti-curl layer 20 1998
6,300,027 Low surface energy photoreceptors 16 2000
6,780,554 Imaging member 7 2002
7,033,714 Imaging members 16 2003
 
HENKEL CORPORATION (1)
6,893,736 Thermosetting resin compositions useful as underfill sealants 2 2002
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
4,889,784 Organic photoconductors with improved wear 15 1988
 
KONICA CORPORATION (1)
5,798,200 Electrophotographic image forming method 24 1997
 
SAMSUNG ELECTRONICS CO., LTD. (1)
2005/0175,363 Optical antenna and wireless optical system using the same 2004

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
XEROX CORPORATION (3)
7,514,191 Imaging member 1 2006
7,745,082 Imaging member 0 2007
8,043,784 Imaging member and methods of forming the same 0 2008
 
MITSUBISHI CHEMICAL CORPORATION (1)
8,404,412 Electrophotographic photoreceptor, and image forming apparatus 0 2006

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 Jul 23, 2014
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jul 23, 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