1
Kazushi Iuchi, Hideyuki Takai, Hajime Miyazaki, Itaru Yamazaki: Oxytitanium phthalocyanine, process for producing same and electrophotosensitive member using same. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, July 21, 1992: US05132197 (37 worldwide citation)

Oxytitanium phthalocyanine having a crystal form characterized by main peaks specified by Bragg angles (2.sigma..+-.0.2 degree) of 9.0 degrees, 14.2 degrees, 23.9 degrees and 27.1 degrees in X-ray diffraction pattern based on CuK.alpha. characteristic X-rays. The oxytitanium phthalocyanine crystal p ...


2
Hideyuki Takai, Kazushi Iuchi, Itaru Yamazaki, Hajime Miyazaki: Low crystalline oxytitanium phthalocyanine, process for producing crystalline oxytitanium phthalocyanines using the same, oxytitanium phthalocyanine of a novel crystal form and electrophotographic photosensitive member using the same. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, March 16, 1993: US05194354 (24 worldwide citation)

There are disclosed low crystalline oxytitanium phthalocyanines which have characteristic strong peaks at specific angles of Bragg angle 2.theta..+-.0.2.degree.. Using the low crystalline oxytitanium phthalocyanines, it is easy to obtain oxytitanium phthalocyanines having novel crystal forms. Electr ...


3
Shintetsu Go, Kazushi Iuchi, Hajime Miyazaki, Hideyuki Takai, Masakazu Matsumoto: Electrophotographic photosensitive member with compound having electron donor and acceptor portions. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, July 23, 1991: US05034294 (12 worldwide citation)

An electrophotographic photosensitive member has a photosensitive layer on an electroconductive support. The photosensitive layer comprises a compound represented by the general formula (1) or (2) having in the molecule thereof an electron-donating portion and an electron-accepting portion: ##STR1## ...


4
Shintetsu Go, Kazushi Iuchi, Toshie Miyaji, Hajime Miyazaki, Hideyuki Takai, Masakazu Matsumoto: Electrophotographic photosensitive member. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, February 15, 1994: US05286589 (10 worldwide citation)

An electrophotographic photosensitive member has a photosensitive layer on an electroconductive support. The photosensitive layer comprises a compound having a structure represented by the general formula (1) or (2) as a charge-generating material: ##STR1## wherein A.sub.1 and A.sub.3 are respective ...


5
Hajime Miyazaki, Shintetsu Go, Akihiro Senoo, Kazushi Iuchi, Tetsuro Kanemaru: Electrophotographic photosensitive member with disazo pigment. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, October 16, 1990: US04963450 (9 worldwide citation)

A laminated layer type electrophotographic photosensitive member has a charge generation layer and a charge transport layer on an electroconductive support, characterized in that the charge generation layer has at least one of disazo pigments represented by the formulae (1) and (2).


6
Akihiro Senoo, Kazushi Iuchi, Hajime Miyazaki, Shintetsu Go, Toshie Miyaji: Electrophotographic photosensitive member. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, May 12, 1992: US05112759 (7 worldwide citation)

An electrophotographic photosensitive member comprises an electroconductive support and a photosensitive layer laid on the electroconductive support, the photosensitive layer containing a compound represented by the following general formula (1): ##STR1## wherein R in a substituted or unsubstituted ...


7
Shintetsu Go, Hideyuki Takai, Hajime Miyazaki, Itaru Yamazaki, Tetsuro Kanemaru, Kazushi Iuchi: Oxytitanium phthalocyanine, process for producing same and electrophotographic photosensitive member using same. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, January 14, 1997: US05593805 (5 worldwide citation)

A new crystalline form of oxytitanium phthalocyanine is characterized by main peaks specified by Bragg angles (2.theta..+-.0.2 degrees) of 7.4 degrees, 10.2 degrees, 12.5 degrees, 15.0 degrees. 16.3 degrees, 18.3 degrees, 22.4 degrees, 24.2 degrees, 25.2 degrees and 28.5 degrees in X-ray diffraction ...


8
Itaru Yamazaki, Hideyuki Takai, Hajime Miyazaki, Tetsuro Kanemaru, Kazushi Iuchi: Process for producing crystalline oxytitanium phthalocyanine. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, July 11, 1995: US05432278 (3 worldwide citation)

A process for producing crystalline oxytitanium phthalocyanine showing strong peaks in CuK.alpha. characteristic X-ray diffraction at Bragg angles 2.theta..+-.0.2.degree. of 9.0.degree., 14.2.degree., 23.9.degree., and 27.1.degree., which comprises a dispersion treatment of the aqueous paste of oxyt ...


9
Toshiyuki Yoshihara, Nobuyuki Hanami, Hideyuki Takai, Hideki Anayama, Hajime Miyazaki, Junichi Kishi, Itaru Yamazaki, Harumi Sakoh, Tetsuro Kanemaru, Kazushi Iuchi, Hideyuki Ainoya: Electrophotographic photosensitive member, and electrophotographic apparatus, device unit, and facsimile machine employing the same. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, September 24, 1996: US05558964 (2 worldwide citation)

An to an electrophotographic photosensitive member includes a photosensitive layer containing a specified oxytitanium phthalocyanine and a polyvinyl acetal resin having a structural unit represented by Formula: ##STR1## wherein X is a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, ...


10
Kazushi Iuchi, Hajime Miyazaki, Hideyuki Takai, Itaru Yamazaki: Process for producing crystalline I-type oxytitanium phthalocyanine. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, June 25, 1996: US05530115 (2 worldwide citation)

The present invention relates to a process for producing a crystalline I-type oxytitanium phthalocyanine having strong peaks in CuK.alpha. characteristic X-ray diffraction at Bragg angles (2.theta..+-.0.2.degree.) of 9.0.degree., 14.2.degree., 23.9.degree., and 27.1.degree., comprising milling-treat ...