摘要:
A photoconductive element having improved physical properties is disclosed. The photoconductive element comprises an electro-conductive substrate, a photoconductive layer containing a photoconductive material and, optionally, a protective layer, wherein either one of said photoconductive layer or said protective layer contains a compound which has in its molecular a hindered amine structure unit represented by formula [Ia] and a hindered phenol structure unit represented by formula [Ib]; ##STR1## wherein, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently represent a hydrogen atom, an alkyl group, or an aryl group; Z represents a group of atoms necessary to complete a nitrogen-containing alicyclic group; R.sub.5 represents an alkyl group; R.sub.6 is a branched alkyl group; R.sub.7, R.sub.8 and R.sub.9 independently represent a hydrogen atom, a hydroxy group, an alkyl group, or an aryl group; and R.sub.10 represents a hydrogen atom, an alkyl group, or an alkeny group; provided that said hindered amine structure unit is connected through one of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and Z thereof, optionally through a divalent organic group and/or one of R.sub.6, R.sub.7, R.sub.8, R.sub.9 and R.sub.10, with said hindered phenol structure unit, and that R.sub.8 and R.sub.9 may be connected with each other to form a ring.
摘要:
A nonaqueous electrolyte secondary battery comprising a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, and a nonaqueous electrolyte is characterized in that the positive electrode active material is composed of a lithium trasition metal oxide having a layer structure and containing Li and Co and further contains a group IVA element and group IIA element of the periodic table.
摘要:
An image forming apparatus comprising (a) a photoreceptor comprising an endless transparent support having thereon a transparent conductive layer, a charge carrier generation layer and a charge carrier transport layer; (b) a charger for charging uniformly the outermost surface of the photoreceptor; (c) an exposing means for having the photoreceptor exposed to light from the side of the support to form an electrostatic latent image on the surface of the photoreceptor; (d) a developing means for developing the electrostatic latent image to form a toner image; (e) a transfer means for transferring the toner image onto a transfer material; and (f) a fixing means for fixing the toner image transferred, wherein a transmittance of the charge carrier generation layer is 20% or less with respect to exposing light emitted from the exposing means, and a carrier drift mobility in the charge carrier transport layer is 1.times.10.sup.-6 cm.sup.2 /V.sec or more under an electric field intensity of 2.times.10.sup.5 V/cm.
摘要:
The present invention relates to an electrophotographic photoreceptor containing titanyl phthalocyanine in a crystalline state that has a maximum intensity peak of the Bragg angle 2.theta. at 27.2.degree..+-.0.2.degree. crystal planes corresponding to diffraction lines at 9.6.degree..+-.0.2.degree., 11.7.degree..+-.0.2.degree. and 24.2.degree..+-.0.2.degree. in a diffraction spectrum obtained with characteristic X-rays of Cu K.alpha. at a wavelength of 1.541 .ANG., and that also has an aggregated state such that a visible and near infrared absorption spectrum has a maximum absorption in the range of 780-860 nm, said photoreceptor further containing an ethylene copolymer resin and/or a polyamide resin in an intermediate layer provided between a light-sensitive layer and an electroconductive layer or an electroconductive substrate.
摘要:
Photoreceptor for electrophotography comprising a conductive support and an overlaying photosensitive layer thereon, said photosensitive layer containing at least one azo compound of Formula I or II ##STR1## wherein Ar.sub.1, Ar.sub.2, Ar.sub.3 and Ar.sub.4 each is an aromatic hydrocarbon ring radical or an aromatic heterocyclic ring radical; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each is an electron attractive group or hydrogen provided that at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is an electron attractive group; and A is ##STR2## wherein X is a hydroxy group or a group represented by the formula: ##STR3## wherein R.sub.6 and R.sub.7 each is hydrogen or an alkyl group, and R.sub.8 is an alkyl or aryl group; Y is halogen, an alkyl or alkoxy group, a carboxy group, a sulfo group, a carbamoyl or sulfamoyl group; Z is an atomic group necessary for making an aromatic hydrocarbon ring or an aromatic heterocyclic ring; R.sub.5 is hydrogen, an amino or carbamoyl group, a carboxy group or an ester group thereof; Ar.sub.5 is an aryl group; n is an integer of 1, 2 or 3; and m is an integer of 0, 1 or 2.
摘要:
An electrophotographic photosensitive member, comprising an electroconductive support and, provided thereon, a photosensitive layer containing a bisazo compound represented by the formula [I]: ##STR1## wherein A is as per defined in the specification. The electrophotographic photosensitive member according to the present invention is stable to heat and light and also excellent in carrier generating ability.
摘要:
An electrophotograhic photoreceptor that has great ability to generate carriers and which has high sensitivity but low residual potential is disclosed. This photoreceptor is characterized by having formed on an electrically conductive support a light-sensitive layer containing a bisazo compound of the following formula: ##STR1## (wherein R.sub.1 is a cyano group, a chlorine atom or a bromine atom; X.sub.1 is a halogen atom, an alkyl group, an alkoxy group or a cyano group; X.sub.2 is a hydrogen atom, a halogen atom, an alkyl atom or an alkoxy group; A is ##STR2## wherein Y is a substituted or unsubstituted carbamoyl group or a substituted or unsubstituted sulfamoyl group; Z is an atomic group necessary for forming a substituted or unsubstituted aromatic hydrocarbon ring or a substituted or unsubstituted heteroaromatic ring; R.sub.2 is a hydrogen atom, a substituted or unsubstituted amino group, a substituted or unsubstituted carbamoyl group, a carboxy group or an ester group thereof; and A' is a substituted or unsubstituted aryl group).
摘要翻译:公开了具有很高的灵敏度但低残留电位的产生载体的能力的电子照相感光体。 该感光体的特征在于在导电载体上形成含有下式的双偶氮化合物的光敏层:其中R1是氰基,氯原子或溴原子; X1是卤素原子 ,烷基,烷氧基或氰基; X 2为氢原子,卤素原子,烷基或烷氧基; A为取代或未取代的氨基甲酰基或取代或未取代的氨基甲酰基 氨磺酰基; Z是形成取代或未取代的芳族烃环或取代或未取代的杂芳环所需的原子团; R 2是氢原子,取代或未取代的氨基,取代或未取代的氨基甲酰基,羧基或 其酯基; A'为取代或未取代的芳基)。
摘要:
Resin compositions excellent in both flame retardation and weather durability, comprising (1) a styrene resin, (2) a halogen-containing flame retarder such as decabromodiphenyl ether and (3) an inorganic hydrate compound such as diatomaceous earth or a magnesium compound such as magnesium hydroxide and oxide.
摘要:
A disclosed radiation source position estimation system includes a first position information specifier configured to specify position information of one or more elements included in a position measuring member; an imager configured to acquire images of the one or more elements formed by radiation emitted from a radiation source; and a second position information specifier configured to specify position information of the radiation source, based on the first position information specified by the first position information specifier and the images acquired by the imager.
摘要:
Capacity degradation due to charge/discharge cycles is suppressed in either a non-aqueous electrolyte secondary cell provided with a positive electrode including, as a positive electrode active material, a lithium-transition metal complex oxide having a layered structure and containing at least Ni and Mn as transition metals, and a negative electrode containing a carbon material as a negative electrode active material and having a higher initial charge-discharge efficiency than that of the positive electrode, or an assembled battery having a plurality of cells each of which is the secondary cell. A control circuit incorporated in the secondary cell or the assembled battery, or in an apparatus using the secondary cell or the assembled battery, monitors the voltage of the secondary cell or each of the cells in the assembled battery so that the end-of-discharge voltage of each cell is 2.9 V or higher.