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1. EP1980912 - ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND ELECTROPHOTOGRAPHIC DEVICE

Office
European Patent Office
Application Number 07713706
Application Date 25.01.2007
Publication Number 1980912
Publication Date 15.10.2008
Publication Kind A4
IPC
G03G 5/06
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
5Recording-members for original recording by exposure e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
02Charge-receiving layers
04Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
06characterised by the photoconductive material being organic
G03G 5/05
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
5Recording-members for original recording by exposure e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
02Charge-receiving layers
04Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
05Organic bonding materials; Methods for coating a substrate with a photoconductive layer; Inert supplements for use in photoconductive layers
CPC
G03G 5/0564
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
5Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
02Charge-receiving layers
04Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
05Organic bonding materials; Methods for coating a substrate with a photoconductive layer; Inert supplements for use in photoconductive layers
0528Macromolecular bonding materials
0557obtained otherwise than by reactions only involving carbon-to-carbon unsatured bonds
0564Polycarbonates
G03G 5/0696
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
5Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
02Charge-receiving layers
04Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
06characterised by the photoconductive material being organic
0664Dyes
0696Phthalocyanines
G03G 5/06147
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
5Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
02Charge-receiving layers
04Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
06characterised by the photoconductive material being organic
0601Acyclic or carbocyclic compounds
0612containing nitrogen
0614Amines
06142arylamine
06147alkenylarylamine
Applicants YAMANASHI DENSHI KOGYO KK
RICOH CO LTD
Inventors SUZUKI HAJIME
UEDA TSUYOSHI
KOIZUMI TOSHIHIKO
NAKAMURA HIDEKI
SAKUMA TETSUYA
Designated States
Priority Data 2006022435 31.01.2006 JP
2006042292 20.02.2006 JP
Title
(DE) ELEKTROFOTOGRAFISCHER FOTOREZEPTOR UND ELEKTROFOTOGRAFISCHE VORRICHTUNG
(EN) ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND ELECTROPHOTOGRAPHIC DEVICE
(FR) PHOTORÉCEPTEUR ÉLECTROPHOTOGRAPHIQUE ET DISPOSITIF ÉLECTROPHOTOGRAPHIQUE
Abstract
(EN) An electrophotographic photoreceptor which can respond to a reduction in diameter of photoreceptor and a process having high circumferential speed, due to the demand in the miniaturization and increase in the speed of copiers and printers. The photoreceptor has high sensitivity in long-wavelength region, and is free from deterioration of electric characteristics even after repeated use, is highly stabile. The electrophotographic photoreceptor has a conductive support member and a photosensitive layer laminated thereon, which includes at least a charge-generating agent, a charge-transfer agent, and a binder resin. The charge-generating agent is oxytitanium phthalocyanine, which has a Bragg angle (2¸+0.2°) providing a maximumpeak at 27.2° in the X-ray diffraction spectra using CuK± as a radiation source. The electron charge-transfer agent includes a compound represented by the following formula.
(FR) La présente invention concerne un photorécepteur électrophotographique, qui peut répondre aux exigences impliquées par une réduction de taille et la vitesse accrue des photocopieuses et des imprimantes, c'est-à-dire les exigences d'une réduction de diamètre d'un photorécepteur et de traitement à grande vitesse périphérique, et, en même temps, peut atteindre une sensibilité élevée même dans une grande plage de longueurs d'ondes, ne souffre pas de détérioration de ses caractéristiques électriques même après un usage répété, et présente une grande stabilité. Le photorécepteur électrophotographique comprend un support électroconducteur et une couche photosensible empilée sur le support électroconducteur, la couche photosensible comprenant au moins un agent générateur de charges, un agent de transfert de charges et une résine liante. Le photorécepteur électrophotographique est caractérisé en ce que l'agent générateur de charges est le phtalocyanure d'oxytitane, en ce que le phtalocyanure d'oxytitane présente un pic maximal à un angle de Bragg (2ϑ ± 0,2º) de 27,2° dans un spectre de diffraction aux rayons X utilisant du CuKα comme source de rayonnement, et en ce que l'agent de transfert de charges contient un composé représenté par la formule suivante.