1
Hiroshi Ikuno, Hiroshi Nagame, Tetsuro Suzuki, Hidetoshi Kami, Jun Aoto, Hiroshi Tamura, Narihito Kojima, Tatsuya Niimi: Electrophotographic photoconductor. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, February 16, 1999: US05871876 (66 worldwide citation)

An electrophotographic photoconductor has an electroconductive support and a photoconductive layer formed thereon, which contains a charge transport material with a polycarbonate structure having a triarylamino group at least on the main chain or side chain thereof, and a charge generation material ...


2
Hidetoshi Kami, Tetsuro Suzuki, Narihito Kojima, Hiroshi Nagame, Hiroshi Tamura, Yohta Sakon, Hiroshi Ikuno: Electrophotographic photoconductor with water vapor permeability. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, February 29, 2000: US06030733 (57 worldwide citation)

An electrophotographic photoconductor including a photoconductive layer which is formed overlying an electroconductive substrate and which includes at least a charge transporting polymer material, wherein the photoconductive layer has a water vapor permeability not greater than about 200 g.multidot. ...


3
Masao Yoshikawa, Masayuki Shoshi, Tetsuro Suzuki, Masakatsu Shimoda, Kaoru Teramura, Megumi Kawahara, Akio Kojima, Masaomi Sasaki, Masafumi Ohta: Positively-chargeable single-layered type electrophotographic photoconductor. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt, February 20, 1996: US05492784 (53 worldwide citation)

A positively-chargeable single-layered type organic electrophotographic photoconductor composed of an electroconductive support and an organic single-layered photoconductive layer containing a charge generating material, an organic positive hole transporting material and an organic acceptor compound ...


4
Tetsuro Suzuki, Masao Yoshikawa, Kazukiyo Nagai, Hiroshi Ikuno: Organic photovoltaic element. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt, September 27, 1994: US05350459 (51 worldwide citation)

An organic photovoltaic element is composed of a first electrode, a first electron acceptor organic layer provided on the first electrode, a second electron acceptor organic layer which is different from the first electron acceptor organic layer, provided on the first electron acceptor organic layer ...


5
Hiroshi Tamura, Hidetoshi Kami, Katsuichi Ohta, Tetsuro Suzuki, Tatsuya Niimi, Narihito Kojima: Electrophotographic photoreceptor, and process cartridge and image forming apparatus using the photoreceptor. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, December 4, 2001: US06326112 (47 worldwide citation)

An electrophotographic photoreceptor which includes an electroconductive substrate, and a photosensitive layer which is formed overlying the substrate, wherein the photosensitive layer includes a charge generation material, a charge transport polymer material including triarylamine structure and a s ...


6
Hidetoshi Kami, Tetsuro Suzuki, Narihito Kojima, Hiroshi Nagame, Hiroshi Tamura, Yohta Sakon, Hiroshi Ikuno: Electrophotographic photoconductor. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, November 21, 2000: US06151468 (47 worldwide citation)

An electrophotographic photoconductor including a photoconductive layer which is formed overlying an electroconductive substrate and which includes at least a charge transporting polymer material, wherein the photoconductive layer has a water vapor permeability not greater than about 200 g.multidot. ...


7
Kazukiyo Nagai, Tetsuro Suzuki, Masaomi Sasaki, Kohkoku Ri, Shinichi Kawamura: Electrophotographic photoconductor, and process cartridge and image forming apparatus using the same. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, April 3, 2001: US06210848 (45 worldwide citation)

An electrophotographic photoconductor has an electroconductive support and a photoconductive layer formed thereon, a surface top portion of the photoconductor containing a high-molecular charge transport material including a polycarbonate copolymer synthesized from (a) a bisphenol monomer with an io ...


8
Akira Katayama, Masaomi Sasaki, Katsukiyo Nagai, Chiaki Tanaka, Shinichi Kawamura, Tetsuro Suzuki, Susumu Suzuka, Katsuhiro Morooka: Electrophotographic photoconductor and aromatic polycarbonate resin for use therein. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, May 23, 2000: US06066428 (45 worldwide citation)

An electrophotographic photoconductor has an electroconductive support, and a photoconductive layer which is formed on the support and contains as an effective component an aromatic polycarbonate resin having a structural unit of formula (I), or the structural unit of formula (I) and a structural un ...


9
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 ...


10
Akira Katayama, Masaomi Sasaki, Katsukiyo Nagai, Chiaki Tanaka, Shinichi Kawamura, Tetsuro Suzuki, Susumu Suzuka, Katsuhiro Morooka: Electrophotographic photoconductor and aromatic polycarbonate resin for use therein. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, February 27, 2001: US06194535 (38 worldwide citation)

An electrophotographic photoconductor has an electroconductive support, and a photoconductive layer which is formed on the support and contains as an effective component an aromatic polycarbonate resin having a structural unit of formula (I), or the structural unit of formula (I) and a structural un ...