1
Tetsumi Suzuki, Tetsuo Murayama, Hitoshi Ono, Shigenori Otsuka, Mamoru Nozomi: Crystalline oxytitanium phthalocyanine and photoreceptor for use in electrophotography. Mitsubishi Chemical, David G Conlin, George W Neuner, May 12, 1987: US04664997 (41 worldwide citation)

Disclosed is a crystalline oxytitanium phthalocyanine which shows intense diffraction peaks at Bragg angles (2.theta..+-.0.2.degree.) of 9.3.degree., 10.6.degree., 13.2.degree., 15.1.degree., 15.7.degree., 16.1.degree., 20.8.degree., 23.3.degree., 26.3.degree. and 27.1.degree. in the X-ray diffracti ...


2
Tetsumi Suzuki, Tetsuo Murayama, Hitoshi Ono, Shigenori Otsuka, Mamoru Nozomi: Dual layer electrophotographic photoreceptor comprises titanium phthalocyanine charge generator and hydrazone charge transport materials. Mitsubishi Chemical, David G Conlin, Linda M Buckley, George W Neuner, February 16, 1988: US04725519 (27 worldwide citation)

A dual layer photoreceptor for use in electrophotography, wherein a charge transport layer containing a hydrazone compound and a binder polymer is laminated on a charge generation layer containing a titanium phthalocyanine compound of the formula: ##STR1## wherein X represents hydrogen atom, lower a ...


3
Mamoru Nozomi, Shigenori Otsuka, Hiromi Horiuchi: Electrophotographic photoreceptor having a dip coated charge transport layer. Mitsubishi Kasei Corporation, David G Conlin, Linda M Buckley, June 9, 1992: US05120627 (18 worldwide citation)

Disclosed herein is an electrophotographic photoreceptor having on a conductive base at least one charge generation layer and at least one charge transport layer, said charge transport layer having the thickness of 27 .mu.m or above and being formed with a coating solution containing a condensation ...


4
Shigenori Ohtsuka, Hiroshi Urabe, Masahiro Nukui, Mamoru Nozomi, Setsuko Sasakawa: Photosensitive member for electrophotography. Mitsubishi Chemical, David G Conlin, Ronald I Eisenstein, September 11, 1990: US04956256 (13 worldwide citation)

A photosensitive member for electrophotography comprising a photosensitive layer on a conductive substrate, said photosensitive layer containing as a binder resin a modified polycarbonate resin having the repeating structural units represented by the following general formula (1) and (2); ##STR1## w ...


5
Shigenori Otsuka, Kohki Furuya, Mamoru Nozomi: Electrophotographic photoreceptor having a protective layer. Mitsubishi Chemical, David G Conlin, Ernest V Linek, June 21, 1988: US04752549 (10 worldwide citation)

An electrophotographic photoreceptor according to this invention has an electrically conductive support, a charge-generation layer, a charge-transport layer and a protective layer which consists essentially of a thermo-setting silicone resin and a polyvinyl acetal resin.


6
Hiroaki Takamura, Takahiro Choda, Itaru Ogawa, Mamoru Nozomi: Electrophotographic copying method and electrophotographic copying machine used in the method. Mitsubishi Chemical Corporation, Oblon Spivak McClelland Maier & Neustadt P C, August 3, 1999: US05932385 (9 worldwide citation)

An electrophotographic copying method, which comprises conducting each process of at least charging, exposing to light, developing and transferring, characterized in that the photoreceptor has at least an undercoat layer and a photosensitive layer on an electroconductive substrate, wherein the under ...


7
Shigenori Otsuka, Mamoru Nozomi: Electrophotographic photoreceptor and use in repeated copying. Mitsubishi Kasei Corporation, David G Conlin, Ernest V Linek, July 14, 1992: US05130222 (8 worldwide citation)

An electrophotographic photoreceptor having an electrically conductive substrate and a photosensitive layer formed thereon, the photosensitive layer comprising a charge-generating agent, an organic charge-transporting agent and an anti-oxidant having the general formula: ##STR1## wherein R.sup.1 and ...


8
Mamoru Nozomi, Kazutaka Ida, Mitsuo Wada: Electrophotographic photoreceptor, drum cartridge employing the electrophotographic photoreceptor, and image-forming apparatus. Mitsubishi Chemical Corporation, Oblon Spivak McClelland Maier & Neustadt P C, May 15, 2007: US07217483 (6 worldwide citation)

The present invention provides an electrophotographic photoreceptor which has high light resistance, has high durability in exposure to oxidizing gases such as ozone and NOx, is excellent in mechanical properties such as printing durability, wearing resistance, marring resistance, and slip propertie ...


9
Yuuta Kumano, Satoshi Kato, Chiyoko Sato, Akiteru Fujii, Mamoru Nozomi: Electrophotographic photoreceptor. Mitsubishi Chemical Corporation, Oblon Spivak McClelland Maier & Neustadt P C, April 26, 2005: US06884556 (5 worldwide citation)

Electrophotographic photoreceptors having improved mechanical properties, electrical properties with excellent response characteristics are prepared by forming a photosensitive layer on an electroconductive substrate. The photosensitive layer contains a binder resin, which may be a polyarylate or a ...


10
Hiroe Kizaki, Mamoru Nozomi, Tetsuo Ozawa, Kozo Ishio: Electrophotographic photoreceptor. Mitsubishi Chemical Corporation, Oblon Spivak McClelland Maier & Neustadt P C, November 30, 2004: US06824938 (5 worldwide citation)

An electrophotographic photoreceptor having at least an undercoat layer and a photosensitive layer on an electroconductive substrate, wherein at least one layer of the undercoat layer contains a naphthalocyanine compound of the following formula (1):