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
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 ...


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
Yohta Sakon, Akio Kosuge, Tatsuya Niimi, Narihito Kojima: Multilayer electrophotographic photoreceptor, and image forming method, image forming apparatus and process cartridge using the photoreceptor. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, June 10, 2003: US06576388 (33 worldwide citation)

An electrophotographic photoreceptor including at least an electroconductive substrate; and a photosensitive layer overlying the electroconductive substrate and including at least a charge generation layer; a charge transport layer; and a protective layer including a filler, wherein the filler is di ...


6
Tetsuro Suzuki, Tatsuya Niimi, Tomoyuki Shimada: Electrophotographic photoconductor. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, December 29, 1998: US05853935 (29 worldwide citation)

An electrophotographic photoconductor has an electroconductive support, and a photoconductive layer formed thereon containing a polycarbonate resin with a triarylamine structure on the main chain and/or side chain thereof, which serves as a high-molecular weight charge transport material, and at lea ...


7
Takashi Rokutanzono, Tamotsu Aruga, Tatsuya Niimi, Yoshiaki Kawasaki: Electrophotographic photoreceptor, electrophotographic image forming method and apparatus using the photoreceptor. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, May 6, 2003: US06558863 (27 worldwide citation)

A photoreceptor including an electroconductive substrate and a photosensitive layer which is formed on the electroconductive substrate and which includes a charge generation material, wherein the charge generation material comprises an organic pigment and wherein the photosensitive layer further inc ...


8
Minoru Umeda, Tatsuya Niimi: Electrophotographic photoconductor. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, October 14, 1997: US05677094 (24 worldwide citation)

An electrophotographic photoconductor is disclosed which includes an electroconductive support, and a photoconductive layer formed thereon and having a charge generation layer and a charge transport layer, wherein the charge generation layer contains a polymeric charge transporting material having a ...


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
Minoru Umeda, Tatsuya Niimi: Electrophotographic photoconductor containing polymeric charge transporting material in charge generating and transporting layers. Ricoh Company, Oblon Spivak McClelland Maier & Neustadt P C, August 20, 1996: US05547790 (23 worldwide citation)

An electrophotographic photoconductor including an electroconductive support and a photoconductive layer formed thereon, which has at least a charge generation layer containing a charge generating material and a polymeric charge transporting material, and a charge transport layer containing a polyme ...