摘要:
For stably obtaining high-quality images with good cleaning properties, with neither occurrence of uneven scraping of a surface layer of a light receiving member nor fusion of a toner, and without occurrence of an image defect even without provision of a heater, the wear loss of the surface layer of a non-monocrystalline hydrogenated carbon film is made not less than 1 Å/10,000 sheets nor more than 10 Å/10,000 sheets after completion of copying processes of A4-size transfer sheets, each copying process including developing an image on a light receiving member with a developer having an average grain diameter of 5 to 8 &mgr;m, then transferring the developer image onto a transfer medium, and thereafter scrape-cleaning the surface of the light receiving member with an elastic rubber blade having the hardness of not less than 70 nor more than 80.
摘要:
An image forming apparatus and method uses an electrophotographic photosensitive member that includes a conductive substrate. The photosensitive member has a photoconductive layer thereon formed of a non-single-crystal material mainly composed of at least silicon atoms. Charging, exposure, development and cleaning in the image forming arrangement are repeated while the photosensitive member rotates. The dynamic frictional force (unit: gf) produced when the photosensitive member surface is cleaned by a cleaning blade to remove a developer remaining on that surface is so set that its standard deviation in its change with time is 2 gf or below per 1 gf/cm of linear pressure of the cleaning blade. No melt-adhesion of toner results and durability is high enough to stably obtain images of high quality.
摘要:
For achieving satisfactory electrical characteristics and high image quality without peeling, damage or abrasion in a long use term the present invention provides an electrophotographic photosensitive member which comprises, on a conductive substrate, a photoconductive layer composed of a non-single-crystalline material containing silicon atoms as a matrix, and a surface layer composed of non-single-crystalline carbon containing at least hydrogen, wherein the surface layer has a surface roughness Rz within a range from 500 Å to 2000 Å for a reference length of 5 &mgr;m and contains at least oxygen, nitrogen, fluorine and boron atoms.
摘要:
There is provided a light-receiving member comprising a photoconductive layer provided on an electroconductive substrate, and a surface layer provided on the photoconductive layer, the surface layer comprising non-single-crystal carbon containing at least fluorine, wherein the surface layer has a ratio of the area of a peak having center in the vicinity of 1200 cm−1 or 1120 cm−1 in the infrared absorption spectrum to the area of a peak having center in the vicinity of 2920 cm−1 being in a range from 0.1 to 50. The light-receiving member allows to obtain a high-quality image without faint image or smeared image in any ambient conditions without use of heating means for the light-receiving member, and has high durability enough for maintaining such high quality characteristics. It can also prevent, by the absence of the heating means, the adhesion of low melting toners such as color toners and the unevenness in image density, generated at the rotating interval of the developer. Besides, it has a high sensitivity, is free from image defects resulting from charge leaking, and is capable of stably providing high-quality images without change with elapse of time.
摘要:
In a reactor capable of reducing an internal pressure thereof, a non-single-crystalline material layer containing at least one kind of carbon atoms, hydrogen atoms or nitrogen atoms is formed and etched on a non-single-crystalline photoconductive layer mainly composed of silicon atoms, formed on a substrate, under application of a high-frequency power of 50 MHz to 450 MHz, and the formation and the etching are alternately repeated plural times to form a surface layer. A light-receiving member having such a surface layer does not damage cleaning performance over a long period of time, hardly allows adhesion of corona discharge products, and can be free from faint images, smeared images and uneven image density even if no heating means for the drum is provided.
摘要:
For providing an electrophotographic photosensitive member that can always maintain good images without occurrence of fusion of toner, independent of the circumstances and the combination of urging pressure of a cleaner, process speed, components contained in toner, etc. and that can always maintain good images of high resolution and even density without occurrence of uneven shaving against a cleaning system or toner, the outermost surface thereof is comprised of a non-monocrystalline carbon film comprising hydrogen and having a dynamic hardness not less than 300 kgf/mm.sup.2 nor more than 1300 kgf/mm.sup.2 measured using a diamond stylus of a triangular pyramid having a tip of a radius not more than 0.1 .mu.m and an edge-to-edge angle of 115.degree., or the outermost surface thereof is comprised of a non-monocrystalline carbon film comprising hydrogen and having a critical load at rupture of the film not less than 50 mN and not more than 700 mN measured when exerting a load on a diamond stylus having a tip of a radius not more than 15 .mu.m while moving the stylus at an amplitude of 20 to 100 .mu.m, an oscillation frequency of 30 Hz, and a feed rate of 2 to 20 .mu.m/sec.
摘要:
With a plasma being generated between a cathode electrode to which a high-frequency power is applied and an electrically conductive substrate opposed to the electrode in a reaction vessel the pressure of which can be reduced, a photoconductive layer having the matrix of silicon atoms is deposited on a substrate to be processed, a surface layer comprised of non-monocrystal carbon containing hydrogen is provided on the photoconductive layer, a surface of the surface layer is etched to fluorinate the surface, the surface roughness Rz by etching is controlled below 1000 .ANG., the fluorine contained in the surface layer is made present within 50 .ANG. from the surface, and the concentration of fluorine to carbon in that region is 20% or more, thereby providing a photosensitive member for electrophotography that can obtain high-quality images free of image faintness and image smearing without using a heating means for the photosensitive member, that has high durability, that shows less change in potential characteristics, that can obtain high-quality images on a stable basis, and that is free of the ghost phenomenon and providing a fabrication process of the photosensitive member.
摘要:
A plasma process, which can fabricate a deposition film in short time and at low cost, which can fabricate a deposition film with excellent reproducibility, which can greatly decrease the cleaning time upon cleaning, and which is optimum for fabricating a deposit film, especially a photosensitive member for electrophotography, capable of achieving a high charge potential upon electrification and capable of obtaining clear images with less image defects, is arranged such that a raw-material gas comprising silicon is introduced into a deposition chamber while evacuating the deposition chamber capable of being kept airtight in a vacuum, the raw-material gas is decomposed by high-frequency power in the VHF band, film formation is carried out to form a deposit film on a substrate installed in the deposition chamber, and thereafter cleaning inside the deposition chamber is carried out by etching and removing a deposit film depositing inside the deposition chamber, using a gas containing at least fluorine and using high-frequency power of a frequency lower than the VHF band.
摘要:
In a reactor capable of reducing an internal pressure thereof, a non-single-crystalline material layer containing at least one kind of carbon atoms, hydrogen atoms or nitrogen atoms is formed and etched on a non-single-crystalline photoconductive layer mainly composed of silicon atoms, formed on a substrate, under application of a high-frequency power of 50 MHz to 450 MHz, and the formation and the etching are alternately repeated plural times to form a surface layer.A light-receiving member having such a surface layer does not damage cleaning performance over a long period of time, hardly allows adhesion of corona discharge products, and can be free from faint images, smeared images and uneven image density even if no heating means for the drum is provided.
摘要:
A light receiving member comprising a electrically conductive substrate, a photoconductive layer composed of a non-single crystalline material containing at least silicon atoms as a matrix formed on said substrate by decomposing a silicon-containing raw material gas, and a surface protective layer composed of a non-single crystalline carbon material containing hydrogen formed on said photoconductive layer by decomposing a raw material gas comprising at least a hydrocarbon using a high frequency power with an oscillation frequency of 50 MHz to 450 MHz, wherein a 20 .ANG. or more thick surface side layer region of said surface protective layer composed of said non-single crystalline carbon material is etched at an etching speed of 0.1 to 50 .ANG./sec. by means of a fluorine-containing plasma produced by decomposing a fluorine-containing gas using a high frequency power with an oscillation frequency of 50 MHz to 450 MHz such that said surface protective layer has a thickness of 100 to 10000 .ANG. and has an etched surface deposited with fluorine atoms so as to cover said etched surface. And a process for producing said light receiving member.