1
Takaaki Ikegami, Eiji Kurimoto, Takashi Rokutanzono, Katsuichi Ohta, Masaomi Sasaki, Yasuo Suzuki, Kaoru Tadokoro, Megumi Kawahara, Masayuki Koyano: Electrophotographic photoconductor containing disazo and trisazo pigments. Ricoh Company, Oblon Spivak Mcclelland Maier & Neustadt P C, November 26, 1996: US05578405 (61 worldwide citation)

An electrophotographic photoconductor includes an electroconductive support and a single-layered photoconductive layer formed thereon, containing a charge transporting material, a binder resin, and a simultaneously pulverized mixture including at least one disazo pigment of formula (1) and at least ...


2
Hiroshi Ikuno, Narihito Kojima, Eiji Kurimoto: Electrophotographic photoreceptor and image forming method and apparatus using the photoreceptor. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, August 13, 2002: US06432596 (44 worldwide citation)

An electrophotographic photoreceptor including an electroconductive substrate; a charge generation layer overlying the substrate; a charge transport layer formed overlying the substrate and including a charge transport material, a polycarbonate resin, an antioxidant having the following formula (1):


3
Hiroshi Ikuno, Hidetoshi Kami, Ryohichi Kitajima, Narihito Kojima, Akihiko Matsuyama, Hiroshi Nagame, Katsuichi Ohta, Tetsuro Suzuki, Nozomu Tamoto, Hiroshi Tamura, Yohta Sakon, Eiji Kurimoto, Tatsuya Niimi, Yuka Miyamoto: Electrophotographic photoreceptor, method for manufacturing the photoreceptor, and image forming method and apparatus using the photoreceptor. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, November 4, 2003: US06641964 (39 worldwide citation)

An electrophotographic photoreceptor including an electroconductive substrate; a photosensitive layer located overlying the electroconductive substrate and including a resin; and a surface layer including a filler and a binder resin, wherein the surface layer and the photosensitive layer have a cont ...


4
Hidetoshi Kami, Tatsuya Niimi, Akihiko Matuyama, Nozomu Tamoto, Eiji Kurimoto: Electrophotographic photoconductor, method of manufacturing same and image forming method, image forming apparatus and process cartridge using same. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, June 3, 2003: US06573016 (35 worldwide citation)

An electrophotographic photoconductor having an electroconductive support, and a photoconductive layer formed on the support and having an outwardly facing surface. The photoconductive layer includes a charge transporting material, a charge generating material and an inorganic filler including &agr; ...


5
Tetsuro Suzuki, Kazukiyo Nagai, Nozomu Tamoto, Eiji Kurimoto, Hidetoshi Kami: Electrophotographic photoreceptor, and image forming method, image forming apparatus, and image forming apparatus processing unit using same. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, August 30, 2005: US06936388 (27 worldwide citation)

An electrophotographic photoreceptor in which at least a photosensitive layer is provided above an electroconductive substrate, the outermost surface layer of the electroconductive substrate contains at least an inorganic filler, a binder resin, and an aliphatic polyester, or, alternatively, the out ...


6
Akihiro Sugino, Shinji Nousho, Takaaki Ikegami, Eiji Kurimoto, Hideo Nakamori, Hidetoshi Kami, Yasuyuki Yamashita: Electrophotographic photoreceptor, and image forming method, image forming apparatus and process cartridge therefor using the electrophotographic photoreceptor. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, September 11, 2007: US07267916 (26 worldwide citation)

An electrophotographic photoreceptor including an electroconductive substrate and a photosensitive layer located overlying the electroconductive substrate, wherein an outermost layer of the electrophotographic photoreceptor includes a particulate fluorine-containing resin, and wherein a primary part ...


7
Takaaki Ikegami, Takashi Rokutanzono, Eiji Kurimoto: Electrophotographic photoconductor containing a mixture of a phenol compound and an organic sulfur-containing compound. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, December 30, 1997: US05702855 (26 worldwide citation)

An electrophotographic photoconductor has an electroconductive support, and a single-layered photoconductive layer formed thereon containing a charge generation material, a charge transport material, a binder resin and a mixture of a phenol compound and an organic sulfur-containing compound.


8
Takaaki Ikegami, Shinji Nohsho, Eiji Kurimoto, Hidetoshi Kami, Akihiro Sugino, Yasuyuki Yamashita, Hideo Nakamori, Takeshi Takada: Electrophotographic photoconductor, electrophotographic process, electrophotographic apparatus, and process cartridge. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, January 1, 2008: US07314693 (25 worldwide citation)

The present invention relates to an electrophotographic photoconductor comprising a photoconductive layer, a protective layer, and a conductive support, wherein the protective layer is disposed as the outermost layer of the photoconductive layer, and 20% by volume to 60% by volume of fine particles ...


9
Nozomu Tamoto, Tetsuro Suzuki, Hiroshi Tamura, Tatsuya Niimi, Akihiko Matsuyama, Eiji Kurimoto, Hidetoshi Kami: Electrophotographic photoreceptor, and image forming method and apparatus using the photoreceptor. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, September 14, 2004: US06790572 (23 worldwide citation)

An electrophotographic photoreceptor including an electroconductive substrate, a photosensitive layer located overlying the electroconductive substrate, and optionally a protective layer overlying the photosensitive layer, wherein an outermost layer of the photoreceptor includes a filler, a binder r ...


10
Hidetoshi Kami, Tatsuya Niimi, Akihiko Matuyama, Nozomu Tamoto, Eiji Kurimoto: Electrophotographic photoconductor, method of manufacturing same and image forming method, image forming apparatus and process cartridge using same. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, November 25, 2003: US06653033 (23 worldwide citation)

An electrophotographic photoconductor having an electroconductive support, and a photoconductive layer formed on the support and having an outwardly facing surface. The photoconductive layer includes a charge transporting material, a charge generating material and an inorganic filler including &agr; ...