摘要:
An electrophotographic process using a photosensitive member having an amorphous silicon photosensitive layer, includes uniformly charging the photosensitive member, and exposing the photosensitive member to information light to form an electrostatic latent image, developing the electrostatic latent image using a developing device selected from a plurality of developing devices disposed along a movement direction of the photosensitive member, wherein a movement speed of the photosensitive member is lower when a selected developing device is the one closer to the station where the uniformly charging step is performed than when another developing device is selected, whereby the time periods for a portion of the photosensitive member to move from the charging station to the developing devices is substantially constant.
摘要:
An electrophotographic photosensitive member comprising a substrate, a light receiving layer having a photoconductive layer composed of a non-single crystal material containing silicon atoms as a matrix and having photoconductivity disposed on said substrate, and a surface protective layer disposed on said light receiving layer, characterized in that said surface protective layer comprises a metal oxide film formed by adjusting the surface of said light receiving layer to have a contact angle against water of 80.degree. or more, applying a sol liquid comprising an organometallic compound admixed with water, an alcohol and an acid onto the surface of said light receiving layer, and subjecting the resultant to heat treatment. An electrophotographic apparatus provided with said electrophotographic photosensitive member. A process for the production of said electrophotographic photosensitive member.
摘要:
A red reproduction-improving electrophotographic image-forming method to be practiced in an electrophotographic image-forming system having a halogen lamp image-forming light source, characterized by using:(a) an image-forming light of a continuous wavelength in the region of from 400 to 700 nm from said halogen lamp light source,(b) a magnet roller capable of forming toner brush comprising magnetic materials of said magnetic toner in said cleaning mechanism, and(c) an amorphous silicon system photosensitive member in a cylindrical form as said cylindrical photosensitive member: said amorphous silicon system photosensitive member comprising a substrate and a light receiving layer which comprises a 0.01 to 10 .mu.m thick charge injection inhibition layer composed of an amorphous material containing silicon atoms as the matrix, a 1 to 100 .mu.m thick photoconductive layer of 3.2 to 3.5 in refractive index composed of an amorphous material containing silicon atoms as the matrix and at least hydrogen atoms and a 4000 to 10000 .ANG. thick surface layer of 1.9 to 2.3 in refractive index composed of A-SiC:H material.
摘要:
A image forming apparatus having cleaning means for cleaning a movable image bearing member, particularly, an amorphous silicon photosensitive material by scraping the image bearing member with both a blade which is brought into contact with the image bearing member and magnet spherical particles held on a magnet roller provided upstream of the blade in the moving direction of the image bearing member. The magnetic spherical particles are made of ferrite having an average particle diameter within a range from 30 to 200 .mu.m, preferably, 60 to 100 .mu.m. As a result abrasion of the photosensitive layer is minimized and foreign matter deposited on the photo sensitive layer is removed to prevent an image flow, so that both a good cleaning function and an image of good picture quality are obtained.
摘要:
An electrophotographic printer in which the data of the surface condition of photosensitive drum are stored in a memory in advance and are read at image recording for correcting an irregularity in the surface condition of the photosensitive drum.
摘要:
An electrophotographic apparatus includes a movable amorphous silicon photosensitive member, charger for charging the photosensitive member, and a projection device for projecting a laser beam onto said photosensitive member. The projection device projects the beam through said charger. The problem peculiar to the amorphous silicon photosensitive member that the dark decay is stronger can be obviated without deteriorating the advantage of high quality and long life of the amorphous silicon photosensitive member.
摘要:
An image forming apparatus includes an electrophotographic photosensitive member movable along an endless path; a charger for charging the photosensitive member; an optical device for projecting light information on the photosensitive member to form an electrostatic latent image; and a optical charge removing device for removing residual electric charge from the photosensitive member, the charge removing device having a light source disposed upstream of the charging device with respect to a movement direction of the photosensitive member and being operated in accordance with time-modulated signal prior to latent image formation.
摘要:
An electrophotographic apparatus includes an amorphous silicon electrophotographic photosensitive member thereon having a conductive base, a photoconductive layer thereon containing carbon atoms, a content of which is minimum adjacent a position closest to the surface layer and/or other atoms, and a surface layer thereon containing 40-90 atomic % of carbon atoms and/or other atoms; a light source for electric discharge driven through a pulse width modulation using a reference wave having a frequency of not higher than 10 kHz; a device for projecting information light onto the photosensitive member; and a driver for driving the photosensitive member relative to the light source at such a speed that a peripheral speed of the photosensitive member divided by the frequency of the reference wave is not more than 1 mm.
摘要:
There are provided an electrophotographic apparatus and an electrophotographic process featured by control satisfying a condition 1n(n).times.1n(S)/1n(E).ltoreq.19.0 among the localized energy level density n in the photoconductive layer of an amorphous silicon photosensitive member employed in the electrophotographic apparatus, the electric field E applied to the photosensitive member, and the surfacial moving speed S thereof. Such control reduces the photocarriers remaining in the photoconductive layer and inducing the photomemory effect, thereby suppressing the influence of a remaining latent image on the latent image generated in a next step, and providing an image of high quality without the photomemory effect, within resulting in a loss in the charging efficiency.
摘要:
A light-receiving member comprising a conductive substrate, and formed superposingly thereon a photosensitive layer and a surface protective layer in order. The light-receiving member has a surface roughness Ra of from 15 nm to 100 nm. Also disclosed is an image-forming apparatus having such a light-receiving member, and an image-forming method of rendering visible an electrostatic pattern formed on the light-receiving member. The light-receiving member promises stable formation of images over a long period of time.