摘要:
An electrophotographic apparatus comprises at least a charging means, an imagewise exposure means with a laser beam having a spot diameter of 100 um or less, a developing means, a transferring means and a cleaning means arranged around an electrophotographic photosensitive member, and said electrophotographic photosensitive member comprises a charge generation material and a charge transport material comprising an organic photoconductive material and has a surface layer containing said charge transport material, wherein the absorption end of visible to UV spectroscopic absorption of the surface layer is substantially unchanged by exposure to nitric acid vapor for 10 minutes; an electrophotographic image forming process; and an electrophotographic photosensitive member.
摘要:
There is provided a transfer material carrying member and an image forming apparatus using it. The transfer material carrying member comprises a metal oxide and a polycarbonate resin having a repeating unit represented by the following formula: ##STR1## The transfer medium carrying member of the present invention has superior surface electrical characteristics, mechanical strength and transparency. The image forming apparatus making use of the transfer medium carrying member enables consistently good transfer even when copies are repeatedly taken and makes it possible to obtain consistently stable, good images.
摘要:
An electrophotographic apapratus of the type in which a photosensitive member is charged by atmospheric discharge, is equipped with an air filter including a substrate and a catalyst layer formed on the substrate including at least three components of CuO, MnO.sub.2 and a water-soluble polymer. The catalyst layer shows a reactivity with NOx and the water-soluble polymer traps the resultant HNO.sub.3 while retaining a high ozone removing efficiency, whereby the apparatus can show excellent electrophotographic performances even after successive use while preventing deterioration due to ozone, NOx and HNO.sub.3 produced by the atmospheric discharge.
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:
An electrophotographic photosensitive member comprises a drum-shaped or endless-sheet-shaped light-transmissive carrier made of a light-transmissive resin, at least one of the top and bottom surfaces of which has maximum and mean roughness both ranging from 0.3 .mu.m to 4.0 .mu.m, and a photosensitive layer is formed on one of the surfaces of the carrier. The photosensitive layer has a laminate structure composed of a charge generating layer and a charge transporting layer. A light-transmissive layer containing fine particles dispersed in a binder resin may be provided between the light-transmissive carrier and the photosensitive member. An electrophotographic apparatus incorporating this electrophotographic photosensitive member has an image exposure light source such as a laser or an LED array disposed at the side of the photosensitive member adjacent the carrier so as to apply an exposure light to the photosensitive member through the light-transmissive carrier. A facsimile apparatus incorporates this electrophotographic apparatus as a printer.
摘要:
An image-bearing member especially adapted to a very compact electrophotographic apparatus is provided. The image-bearing member has a ratio of the diameter to the length of 1:5 or more, and the surface of the image-bearing member has a relative frictional coefficient against urethane rubber of 0.7 or less with polyethylene terephthalate film as the standard, whereby a cleaning failure and generation of blade scratches on the image-bearing member can be avoided even if it has a small diameter of 45 mm or less. The cleaning effect is ensured if the cleaning blade line pressure is 7 g/cm or higher.
摘要:
Disclosed herein is a recording medium comprising a base material and an ink-receiving layer provided on the base material, wherein the ink-receiving layer comprises a high-water-absorptive material obtained by grafting, on a water-absorptive polymer, an inorganic oxide formed from an inorganic alkoxide represented by the formula(R.sub.2).sub.n --M--(OR.sub.1).sub.m-nwherein M denotes an element selected from the group consisting of Si, Al, Ti, Zr, Ca, Fe, V, Sn, Be, B and P, m is a valence of M, n is an integer of 1 or 2, R.sub.1 denotes an alkyl group having 1 to 4 carbon atoms which may have a substituent group, and R.sub.2 denotes an alkyl group having 1 to 4 carbon atoms or a phenyl group, each of which may have a substituent group.
摘要:
There is disclosed an electrophotographic process adapted for using a cylindrical photosensitive member of a small diameter of 40 mm or less which has such a charging characteristic that when it is charged to 700 V (or -700 V) and then exposed to such an intensity of light as to provide a potential of 200 V (or -200 V) after exposure for 50 msec., the photosensitive member will have a potential of 20 to 150 V (or -20 to -150 V) after exposure for 150 msec. In the process, the steps of charging, exposure, developing and transfer involved, and the following relationship is satisfied: R.theta./v.gtoreq.0.30, wherein R (mm) is the outer diameter of the cylindrical photosensitive member, .theta. (radian) is the angle formed between the exposure and the developing position on the cylindrical photosensitive member with respect to the center thereof as the angle center, and v (mm/sec) is the circumferential speed of the cylindrical photosensitive member. By the process, undesirable increase in residual potential on the photosensitive member to solve the problems of increasing image density and fog during successive copying.
摘要:
A transfer material carrying member has a copolymer and conductive particles; the copolymer has a component unit represented by the Formula (I) and a component unit represented by the Formula (II), and the component unit represented by Formula (II) is in an amount of from 0.1% by weight to 50% by weight based on the total weight of the copolymer.
摘要:
An image holding member comprises an electroconductive substrate, a resin layer, and an image holding layer. The resin layer is placed between the electroconductive substrate and the image holding layer. The resin layer comprises metal-coated fine resin particles, and a binder resin.