JP2007179038A5 - - Google Patents

Claims (11)

In an electrophotographic photosensitive member having a charge transport layer and a charge generation layer on a conductive support, the charge transport layer contains a charge transport material represented by the following general formula (1) and a binder resin. An electrophotographic photoreceptor, wherein a mass ratio of the charge transport material to the binder resin (charge transport material / binder resin) is 5/100 or more and 45/100 or less.

(In General Formula (1), Ar ¹ represents an arylene group which may have a substituent, Ar ^{2 to} Ar ⁵ represent an aryl group which may have a substituent, and n represents an integer of 3 to 6. ) In an electrophotographic photosensitive member having a charge transport layer and a charge generation layer on a conductive support, the charge transport layer contains a charge transport material represented by the following general formula (1), and a plurality of charge transports A material and a binder resin, wherein the mass ratio of the plurality of charge transport materials to the binder resin (charge transport material / binder resin) is from 25/100 to 55/100 An electrophotographic photosensitive member.

(In General Formula (1), Ar ¹ represents an arylene group which may have a substituent, Ar ^{2 to} Ar ⁵ represent an aryl group which may have a substituent, and n represents an integer of 3 to 6. ) In an electrophotographic photoreceptor having a charge transport layer and a charge generation layer on a conductive support, the charge transport layer contains a charge transport material represented by the following general formula (1), and the charge generation layer has Oxytitanium phthalocyanine, and the oxytitanium phthalocyanine is obtained by chemical treatment of a phthalocyanine crystal precursor and then contacting an organic solvent, and has a Bragg angle with respect to CuKα characteristic X-ray (wavelength 1.541Å) (2θ ± 0.2 °) An electrophotographic photosensitive member characterized by being an oxytitanium phthalocyanine having main diffraction peaks at 9.5 °, 24.1 °, and 27.2 °.

(In General Formula (1), Ar ¹ represents an arylene group which may have a substituent, Ar ^{2 to} Ar ⁵ represent an aryl group which may have a substituent, and n represents an integer of 3 to 6. ) In an electrophotographic photosensitive member having a charge transport layer and a charge generation layer on a conductive support, the charge transport layer contains a charge transport material represented by the following general formula (1) and a polyarylate resin. An electrophotographic photosensitive member characterized by the above.

(In General Formula (1), Ar ¹ represents an arylene group which may have a substituent, Ar ^{2 to} Ar ⁵ represent an aryl group which may have a substituent, and n represents an integer of 3 to 6. ) In an electrophotographic photosensitive member having a charge transport layer and a charge generation layer on a conductive support, the charge transport layer comprises a charge transport material represented by the following general formula (1), and a viscosity average molecular weight of 10,000 to 70,000. An electrophotographic photosensitive member, comprising: a binder resin.

(In General Formula (1), Ar ¹ represents an arylene group which may have a substituent, Ar ^{2 to} Ar ⁵ represent an aryl group which may have a substituent, and n represents an integer of 3 to 6. )   The charge generation layer has a crystal type oxy having peaks at 9.5 °, 24.1 °, and 27.3 ° in the Bragg angles (2θ ± 0.2 °) of the X-ray diffraction spectrum with respect to CuKα characteristic X-rays. The electrophotographic photosensitive member according to claim 1, comprising titanium phthalocyanine. An electrophotographic photosensitive member having a charge transporting layer containing a charge transporting material represented by the following general formula (1) and a charge generating layer is mounted on a conductive support, and the electrophotographic photosensitive member has a wavelength of 380 to 380. An image forming apparatus, wherein an image is formed by exposure with monochromatic light of 500 nm.

(In General Formula (1), Ar ¹ represents an arylene group which may have a substituent, Ar ^{2 to} Ar ⁵ represent an aryl group which may have a substituent, and n represents an integer of 3 to 6. ) An electrophotographic photoreceptor having a charge transport layer containing a charge transport material represented by the following general formula (1) as an outermost layer is mounted on a conductive support, and the electrophotographic photoreceptor is the electrophotographic photoreceptor. An image forming apparatus, wherein the image is formed by charging with a charger placed in contact with the image forming apparatus.

(In General Formula (1), Ar ¹ represents an arylene group which may have a substituent, Ar ^{2 to} Ar ⁵ represent an aryl group which may have a substituent, and n represents an integer of 3 to 6. )   An image forming apparatus comprising the electrophotographic photosensitive member according to any one of claims 1 to 6.   An electrophotographic photosensitive member according to any one of claims 1 to 6 is mounted, and the electrophotographic photosensitive member is exposed to monochromatic light having a wavelength of 380 to 500 nm to form an image. Image forming apparatus. The electrophotographic photosensitive member according to any one of claims 1 to 6 is combined with one or more of a charging device, an exposure device, a developing device, a transfer device, a cleaning device, and a fixing device. A cartridge characterized by that.