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1. WO2010008094 - ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS

Publication Number WO/2010/008094
Publication Date 21.01.2010
International Application No. PCT/JP2009/063229
International Filing Date 16.07.2009
IPC
G03G 5/05 2006.01
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
G03G 5/047 2006.01
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
043Photoconductive layers characterised by having two or more layers or characterised by their composite structure
047characterised by the charge-generation layers or charge-transporting layers
G03G 5/06 2006.01
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
CPC
G03G 5/056
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
056Polyesters
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 5/0578
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
0578Polycondensates comprising silicon atoms in the main chain
G03G 5/0592
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
0592Macromolecular compounds characterised by their structure or by their chemical properties, e.g. block polymers, reticulated polymers, molecular weight, acidity
G03G 5/0614
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
G03G 5/14752
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
14Inert intermediate or cover layers for charge-receiving layers
147Cover layers
14708comprising organic material
14713Macromolecular material
14747obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
14752Polyesters
Applicants
  • キヤノン株式会社 CANON KABUSHIKI KAISHA [JP]/[JP] (AllExceptUS)
  • 大垣晴信 OGAKI, Harunobu [JP]/[JP] (UsOnly)
  • 植松弘規 UEMATSU, Hiroki [JP]/[JP] (UsOnly)
  • 大地敦 OCHI, Atsushi [JP]/[JP] (UsOnly)
Inventors
  • 大垣晴信 OGAKI, Harunobu
  • 植松弘規 UEMATSU, Hiroki
  • 大地敦 OCHI, Atsushi
Agents
  • 岡部正夫 OKABE, Masao
Priority Data
2008-18718018.07.2008JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS
(FR) PHOTORÉCEPTEUR ÉLECTROPHOTOGRAPHIQUE, CARTOUCHE DE TRAITEMENT ET APPAREIL ÉLECTROPHOTOGRAPHIQUE
(JA) 電子写真感光体、プロセスカートリッジ及び電子写真装置
Abstract
(EN)
Disclosed is an electrophotographic photoreceptor that can continually exhibit the effect of relaxing stress of contact with a contact member or the like and, at the same time, has an excellent potential stability during repeated use.  Also disclosed are a process cartridge comprising the electrophotographic photoreceptor, and an electrophotographic apparatus.  The electrophotographic photoreceptor comprises a charge transport layer as a surface layer.  The charge transport layer comprises a polyester resin as a binder resin.  The polyester resin has a repeating structural unit represented by formula (1) and a repeating structural unit represented by formula (2).  The content of siloxane sites in the polyester resin is 5 to 30% by mass based on the total mass of the polyester resin, and the content of the polyester resin in the charge transport layer is not less than 60% by mass of the total mass of the whole binding resin in the charge transport layer.
(FR)
La présente invention concerne un photorécepteur électrophotographique s'avérant capable de relâcher de façon continue la contrainte du contact avec un élément de contact ou analogue, tout en présentant un excellent potentiel de stabilité en cas d'utilisation répétée. L'invention concerne également, d'une part une cartouche de traitement comprenant ce photorécepteur électrophotographique, et d'autre part un appareil électrophotographique. Le photorécepteur électrophotographique comprend une couche de transport de charge servant de couche de surface. La couche de transport de charge comprend une résine de polyester servant de résine de liaison. La résine de polyester comporte une unité structurelle récurrente représentée par la formule (1) et une unité structurelle récurrente représentée par la formule (2). Les sites siloxane présents dans la résine de polyester représentent 5% à 30% de la masse totale de la résine de polyester, et la résine de polyester présente dans la couche de transport de charge représente au moins 60% de la masse totale de l'ensemble de la résine de liaison présente dans la couche de transport de charge.
(JA)
接触部材等との接触ストレスの緩和効果を持続的に発揮することができ、かつ、繰り返し使用時の電位安定性にも優れた電子写真感光体、ならびに、該電子写真感光体を有するプロセスカートリッジおよび電子写真装置を提供する。電子写真感光体の表面層である電荷輸送層が結着樹脂として下記式(1)で示される繰り返し構造単位および下記式(2)で示される繰り返し構造単位を有するポリエステル樹脂を含有し、ポリエステル樹脂中のシロキサン部位の含有量がポリエステル樹脂の全質量に対して5質量%以上30質量%以下であり、電荷輸送層中のポリエステル樹脂の含有量が電荷輸送層中の全結着樹脂の全質量に対して60質量%以上である。
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