摘要:
According to the The present invention, there are provided an electrophotographic photosensitive member, an electrophotographic apparatus comprising the electrophotosensitive member, and a facsimile system comprising the electrophotographic apparatus. The electrophotographic photosensitive member comprises a conductive support, a photosensitive layer and an intermediate layer interposed therebetween. The intermediate layer comprises a material derived from an isocyanate compound and a plurality of kinds of polyether polyol compounds, the polyether polyol compounds meeting at least one of the following requirements i) and ii):i) a ratio of a weight average molecular weight of at least one polyether polyol compound to a weight average molecular weight of at least one other polyether polyol compound is 1.3 or more; andii) at least one polyether polyol compound has different functionality from that in at least one other polyether polyol compound.
摘要:
An electrophotographic photosensitive member comprises a conductive support and provided thereon a photosensitive layer, interposing an intermediate layer between them. The intermediate layer contains a polyether polyamide.
摘要:
An electrophotographic photosensitive member has a photosensitive layer provided on an electroconductive support with interposition of an intermediate layer, the intermediate layer containing a polyether-polyurethane and an electroconductive substance.An electrophotographic apparatus, comprises an electrophotographic photosensitive member having a photosensitive layer provided on an electroconductive support with interposition of an intermediate layer, the intermediate layer containing a polyether-polyurethane and an electroconductive substance.A facsimile apparatus comprises an electrophotographic apparatus and a receiving means for receiving image information from a remote terminal, the electrophotographic apparatus comprising an electrophotographic photosensitive member having a photosensitive layer provided on an electroconductive support with interposition of an intermediate layer, the intermediate layer containing a polyether-polyurethane and an electroconductive substance.
摘要:
A photosensitive member suitable for use in an electrophotographic apparatus is constituted by an electroconductive support, and an intermediate layer and a photosensitive layer disposed in this order on the support. The intermediate layer comprises a reaction product of a polyol compound comprising at least one of a polyol compound [I] represented by Formula (1) shown below and a phosphated polyol compound with a polyisocyanate compound: ##STR1## wherein A denotes ##STR2## B denotes --R.sup.4 --O--, A and B may be connected at random or in blocks with each other, Z denotes an active hydrogen compound residue; R.sup.1 is an alkylene group having 1-9 carbon atoms; R.sup.2 is an alkylene group having 1-10 carbon atoms; R.sup.3 is an alkyl group, alkenyl group, aryl group or aralkyl group having 1-20 carbon atoms; R.sup.4 is an alkylene group having 2-10 carbon atoms; k is a number of 1-12 m is a number of 1-250; n is a number of 0-100; and p is a number of 0-5.
摘要:
An electrophotographic photosensitive member is constituted by an electroconductive support, and an intermediate layer and a photosensitive layer disposed in this order on the support. The intermediate layer comprises a reaction product of a mixture including a polyol compound [I], a polyol compound [II] having an OH equivalent different from that of the polyol compound [I] and a polyisocyanate compound. The polyol compound [I] is a polyether polyol compound having an OH equivalent of at least 500 and 2-60 OH groups per molecule; and the polyol compound [II] is a polyol compound having an OH equivalent of at most 300. The photosensitive member shows stable electrophotographic performances over wide environmental conditions from low temperature--low humidity to high temperature high humidity due to the intermediate layer.
摘要:
An electrophotographic photosensitive member is constituted by an electroconductive support, and an intermediate layer and a photosensitive layer disposed in this order on the support. The intermediate layer comprises a reaction product of a mixture including a polyol compound [A] and a polyisocyanate compound[B] satisfying at least one of the following conditions (i) and (ii): (i) the polyol compound [A] is a high-molecular weight polyol compound, and (ii) the polyisocyanate compound is a polyoxyalkylene segmentcontaining polyisocyanate compound. The photosensitive member shows stable electrophotographic performances over wide environmental conditions from low temperature - low humidity to high temperature - high humidity due to the intermediate layer.
摘要:
An electrophotographic sensitive medium and apparatus for use with this medium. The electrophotographic sensitive medium has an electroconductive support, a sensitive layer, and an intermediate layer interposed between the support and the sensitive layer. The intermediate layer material contains a polyamide grafted with a polymer or a copolymer, and the polymer of copolymer contains a unit component represented by the following general formula: ##STR1## wherein R.sub.1 is a hydrogen atom or a methyl group, Z is --O-- or --NH--, and A is an alkylene group having 1 to 6 carbon atoms.
摘要:
A photosensitive member for electrophotography comprising an electroconductive substrate, and an intermediate layer and a photosensitive layer disposed in this order on the substrate; the intermediate layer comprising a resin component and a salt; the intermediate layer containing the salt in an amount of 1-800 ppm based on the weight of the resin component.
摘要:
An electrophotographic photosensitive member has a substrate, a photosensitive layer and an intermediate layer spaced between said substrate and said photosensitive layer. The intermediate layer contains a polyamide resin grafted with a polymer or a copolymer having a unit component expressed by the following general formula (I) ##STR1## wherein, R.sub.1 is hydrogen atom or a methyl group, each of R.sub.2 and R.sub.3 is a hydrogen atom, an alkyl group or an aryl group or R.sub.2 and R.sub.3 in combination is a residual group necessary for forming a heterocyclic compound containing N, R.sub.2 and R.sub.3 are the same or different from each other. Also disclosed are an electrophotographic apparatus having the photosensitive member, and a facsimile incorporating the electrophotographic apparatus.
摘要:
A charging member having a surface layer which comprises a polyurethane resin prepared from a raw material for polyurethane containing an isocyanate group and a hydroxyl group; the raw material having a molar ratio between the isocyanate (NCO) group and hydroxyl group satisfying the following relationship:1.0