1
Satoshi Katayama, Takahiro Teramoto, Kiyofumi Morimoto, Satoshi Machino, Tatsuhiro Morita, Tomoko Kanazawa: Electrophotographic photoconductor and method of producing same. Sharp Kabushiki Kaisha, Nixon & Vanderhye, September 28, 1999: US05958638 (86 worldwide citation)

An object of the invention is to provide an electrophotographic photoconductor featuring uniform chargeability to a predetermined potential, low residual potential and excellent stability in the operating environment and repeated use thereof, as well as a method of producing the same. An undercoat l ...


2
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 ...


3
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 ...


4
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. ...


5
Hiroshi Tamura, Toshio Fukagai: Electrophotographic Photoconductor. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt, June 27, 1995: US05427880 (56 worldwide citation)

An electrophotographic photoconductor composed of an electroconductive substrate and a photoconductive layer formed thereon, containing an interpenetrating polymer network prepared by polymerizing a composition composed of a binder resin and at least one polymerizable carbon-carbon double-bond-conta ...


6
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 ...


7
Hiroshi Tamura, Naoshi Mishima, Yoshiaki Kawasaki: Electrophotographic photoconductor. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt, May 2, 1995: US05411827 (49 worldwide citation)

An electrophotographic photoconductor composed of an electroconductive substrate, and a photoconductive layer consisting of a charge generation layer and a charge transport layer successively formed on the substrate in this order, the charge transport layer containing a carbon-carbon double-bond-con ...


8
Satoshi Katayama, Satoshi Nishigaki, Kazuhiro Emoto, Hiroshi Sugimura, Kazushige Morita, Yoshimi Kojima, Yoshimasa Fujita: Electrophotographic photoconductor and a method for forming the same. Sharp Kabushiki Kaisha, Nixon & Vanderhye, February 6, 1996: US05489496 (47 worldwide citation)

An electrophotographic photoconductor comprising a conductive support, an undercoating layer provided on the conductive support and a photosensitive layer provided on the undercoating layer, in which the undercoating layer comprises a needle-like titanium oxide particles and a binder resin. The need ...


9
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. ...


10
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 ...